7100 Anesthesia Ventilator
Technical Reference Manual
7100 Anesthesia Ventilator
02/03 1006-0836-000
Datex-Ohmeda products have unit serial numbers with coded logic which indicates a product
group code, the year of manufacture and a sequential unit number for identification.
Aestiva and Aespire
are registered trademarks of Datex-Ohmeda Inc.
Other brand names or product names used in this manual are trademarks or registered
trademarks of their respective holders.
AAA F 12345
This alpha character indicates the year of product manufacture
and when the serial number was assigned;
“D” = 2000, “E” = 2001, “F” = 2002, etc.
“I” and “O” are not used.
Technical Reference Manual
1006-0836-000 02/03
i
This document is not to be reproduced in any manner, nor are the contents to be disclosed to
anyone, without the express authorization of the product service department, Datex-Ohmeda,
Ohmeda Drive, PO Box 7550, Madison, Wisconsin, 53707.
© 2003 Datex-Ohmeda Inc.
7100 Anesthesia Ventilator
used in
Aestiva and Aespire Anesthesia Machines
7100 Anesthesia Ventilator
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02/03 1006-0836-000
Important
The information contained in this service manual pertains only to those models of products
which are marketed by Datex-Ohmeda as of the effective date of this manual or the latest
revision thereof. This service manual was prepared for exclusive use by Datex-Ohmeda service
personnel in light of their training and experience as well as the availability to them of parts,
proper tools and test equipment. Consequently, Datex-Ohmeda provides this service manual to
its customers purely as a business convenience and for the customer's general information only
without warranty of the results with respect to any application of such information. Furthermore,
because of the wide variety of circ*mstances under which maintenance and repair activities
may be performed and the unique nature of each individual's own experience, capacity, and
qualifications, the fact that customer has received such information from Datex-Ohmeda does
not imply in anyway that Datex-Ohmeda deems said individual to be qualified to perform any
such maintenance or repair service. Moreover, it should not be assumed that every acceptable
test and safety procedure or method, precaution, tool, equipment or device is referred to within,
or that abnormal or unusual circ*mstances, may not warrant or suggest different or additional
procedures or requirements.
This manual is subject to periodic review, update and revision. Customers are cautioned to
obtain and consult the latest revision before undertaking any service of the equipment.
Comments and suggestions on this manual are invited from our customers. Send your
comments and suggestions to the Manager of Technical Communications, Datex-Ohmeda,
Ohmeda Drive, PO Box 7550, Madison, Wisconsin 53707.
wwww
CAUTION
Servicing of this product in accordance with this service manual should never be
undertaken in the absence of proper tools, test equipment and the most recent revision
to this service manual which is clearly and thoroughly understood.
Technical Competence
The procedures described in this service manual should be performed by trained and authorized
personnel only. Maintenance should only be undertaken by competent individuals who have a
general knowledge of and experience with devices of this nature. No repairs should ever be
undertaken or attempted by anyone not having such qualifications.
Datex-Ohmeda strongly recommends using only genuine replacement parts, manufactured or
sold by Datex-Ohmeda for all repair parts replacements.
Read completely through each step in every procedure before starting the procedure; any
exceptions may result in a failure to properly and safely complete the attempted procedure.
1009-0836-000 02/03 iii
Table of Contents
Important . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
Technical Competence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
1 Introduction
1.1 What this manual includes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
1.1.1 Software versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
1.2 Standard service procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
1.2.1 User’s reference manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
1.2.2 Technical reference manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
1.2.3 Ventilator tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
1.3 Symbols used in the manual or on the equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
2 Theory of Operation
2.1 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
2.2 7100 ventilator features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
2.2.1 Safety features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
2.3 7100 ventilator components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5
2.3.1 Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6
2.3.2 Monitoring interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7
2.3.3 Serial interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7
2.3.4 The Pneumatic Vent Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
2.4 Electronic and electrical components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-9
2.4.1 The Aestiva 7100 ventilator functional blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-9
2.4.2 The Aespire 7100 ventilator functional blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
2.4.3 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2.4.4 Sealed Lead Acid Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2.4.5 Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
2.4.6 Monitoring interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
2.4.7 Serial interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
2.4.8 Pneumatic Vent Engine Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18
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2.5 Mechanical Subsystems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
2.5.1 Supply Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
2.5.2 Pressure Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
2.5.3 Inspiratory Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
,• Sequential watchdog
• Logical watchdog
• Data RAM walking pattern test
• FLASH ROM CRC verification
• PEEP Valve test
• PEEP Safety Valve test
If one or more of these tests fail, the display provides a readout of the problem.
Continuous tests These tests are run continuously during normal operation and alarms are
associated with each test. A failure causes an alarm to display on the screen in
the alarm display area.
• Supply voltage checks
• Battery voltage checks
Periodic tests These tests are run every 30 seconds during normal operation. Alarms are
associated with each test. A failure causes an alarm to display on the screen in
the alarm display area.
• CPU Test
• Display RAM walking pattern test
• Data RAM walking pattern test
• FLASH ROM CRC verification
• Inspiratory control valve DAC and voltage feedback
• PEEP control valve DAC and voltage feedback
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4.2 Service Mode The Service Mode is used to test, calibrate, or troubleshoot ventilator related
components in the anesthesia machine.
There are two ways to enter the service mode:
• If the machine is turned off, push and hold in the adjustment knob
while setting the system switch to On. Hold the adjustment knob
pushed in until the “Service Confirmation” menu appears. Use the
adjustment knob to highlight “Service Mode”, then push the
adjustment knob to confirm the selection.
• If the machine is already in normal operation, set the Bag/Vent switch
to Bag. Then, press the VT /Pinsp, the PEEP, and the menu switches at
the same time to reset the software (powerup). Push and hold the
adjustment knob until the “Service Confirmation” menu appears.
Note: Volume alarms must be in standby.
From this menu you can:
• Go to the Service Modes
• Return to Normal Operations
Service Modes Menu The Service Modes main menu displays the service tests you can select.
The selectable service tests are displayed in categorical order. But you can
select the service test from this menu in any order. The following sections in this
manual are sequenced in the order that they appear on the screen.
Language Specific
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4.3 About Ventilator The About Ventilator menu identifies the current software loaded into the
ventilator’s Flash-ROM memory and displays the total “on time” of the system.
• Software Version
• Software Date
• Hardware ID
• Total System On Time
• Current Bootup Count — The bootup count is incremented each time
the machine is turned on. The bootup count is not overwritten when
new software is loaded. However, if a new control board is installed,
the bootup count will reflect the value stored in the EEPROM of the
new board.
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4.4 Alarm Log The Alarm Log displays up to 20 of the most current alarm messages that have
been logged. Each log entry shows:
• Bootup Count number (the bootup count is incremented each time
the machine is turned on).
• Time (ms) — the time in milliseconds since bootup when the latest
alarm condition occurred.
• Alarm message associated with the particular alarm condition.
• # Times — the number of times that the specific alarm condition has
occurred during the noted bootup count.
The bottom-left corner of the screen displays additional information:
• Bootup Count Last Cleared
• Current Bootup Count
Scroll Data To view all the log entries, select “Scroll Data.”
Then, use the control knob to scroll through the entries.
To exit Scroll Data, press the control knob.
Clear Alarm Log To clear the alarm log, select “Clear Alarm Log.” The system asks you to confirm
that you want to clear the alarm log.
Remarks After you clear the alarm log:
• the “Bootup Count Last Cleared” number will be reset to the “Current
Bootup Count” number.
• the menu will show the message “No entries in log!”.
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4.5 Error Log There are two special types of alarms:
• Minimum monitoring alarms that stop mechanical ventilation
• Minimum shutdown alarms that stop mechanical ventilation and
monitoring.
An alarm message that results from these special types of alarms is considered
an error alarm.
The Error Log displays up to 20 of the most current Error messages that have
been logged.
Each log entry shows:
• Bootup Count number (the bootup count is incremented each time
the machine is turned on).
• Time (ms) — the time in milliseconds since bootup when the latest
alarm condition occurred.
• Error message associated with the particular alarm condition.
• Address — the place in the software sequence where the last
occurrence of the error took place.
The error address and software revision are important pieces of information to
note if technical support is required.
The bottom-left corner of the screen displays additional information:
• BBBBoooooooottttuuuupppp CCCCoooouuuunnnntttt LLLLaaaasssstttt CCCClllleeeeaaaarrrreeeedddd
• CCCCuuuurrrrrrrreeeennnntttt BBBBoooooooottttuuuupppp CCCCoooouuuunnnntttt
Scroll Data To view all the log entries, select “Scroll Data.”
Then, use the control knob to scroll through the entries.
To exit Scroll Data, press the control knob.
Clear Error Log To clear the error log, select “Clear Error Log.” The system asks you to confirm
that you want to clear the error log.
Remarks After you clear the alarm log:
• the “Boot Count Last Cleared” number will be reset to the “Current
Boot Count” number.
• the menu will show the message “No entries in log!”.
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4.6 Language The text shown in the normal mode of operation is language sensitive.
However, the Service Confirmation menu (except for text “Normal Operation”)
and all the Service Modes menus are shown only in English.
The Language menu is used to set the specific language for normal operation.
The 7100 ventilator supports the following languages. The language selections
appear in language specific text.
• English
• Español . . . . . . . Spanish
• Deutsch . . . . . . German
• Polski . . . . . . . . . Polish
• Português . . . . . Portuguese
• Français . . . . . . . French
• Italiano . . . . . . . Italian
• Čeština . . . . . . . Czech
• Magyar . . . . . . . Hungarian
• Nederlands . . . Dutch
• Greek
• Russian
• Japanese
• Chinese
The language setting is stored in EEPROM with the default setting as English.
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4.7 User Settings In normal operation, the user can set several parameters to a personal
preference or to compensate for the surrounding influences. The range of some
of these settings can vary from machine to machine.
The User Settings menu is used to adjust the range to normalized values.
4.7.1 Screen Contrast The range from minimum to maximum screen contrast varies for individual
displays. The Screen Contrast menu is used to tailor the range so that the
screen image is still visible at minimum and maximum contrast settings for the
user.
Remarks The “Minimum Screen Contrast” and the “Maximum Screen Contrast” settings
set the range of contrast values for the operator.
The “Optimal Screen Contrast” setting sets the default value.
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4.8 System Configuration
The System Configuration menu includes settings that are tailored to the
specific machine. The “Altitude,” “Drive Gas,” “Heliox Mode,” “√E Alarm
Limits,” “System Type,” and “Flow Sensor Correction” settings are present for
all machines. The inclusion of the remaining settings depends on the
purchased features for the specific machine.
Set the altitude The accuracy of some of the ventilator measurements is altitude sensitive. To
ensure the specified accuracy, the altitude setting should be set to the specific
altitude where each machine is located.
Altitude settings range from
,-400 to 3600 meters in increments of 100 meters.
The setting is saved in EEPROM; the default value is 300 meters.
Select drive gas Either O2 or Air can be used as the drive gas for the ventilator’s pneumatic
engine.
To compensate volume calculations for the specific density of the drive gas
used, the drive gas selection on this menu must match the actual drive gas.
To change the actual drive gas, refer to Section 4 of the respective anesthesia
machine Technical Reference Manual.
wwww Caution If you change the drive gas, you must also change the drive gas selection
on this service setup screen. If the drive gas selection and the actual
drive gas do not agree, volumes will not be correct.
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Heliox Mode Enabled — Disabled
Only Aestiva machines can be configured to deliver Heliox. Aestiva machines
that include the Heliox option, should have the Heliox Mode “Enabled”. With
the Heliox Mode enabled, the operator can choose to turn the Heliox Mode On
or Off (on the Setup menu).
All Aespire machines should have the Heliox Mode disabled.
If the machine is not configured to deliver Heliox, the Heliox Mode should be set
to “Disabled”. With the Heliox Mode disabled, the user’s “Setup” menu will not
include the Heliox option.
Whenever you enable or disable the Heliox Mode, the screen will display the
following warning:
Note A similarly worded warning will appear when you change the “O2 Monitoring,”
“Volume Monitoring,” and the “Volume Compensation” settings.
√E Alarm Limits Automatic — User Adjustable
System Type Aestiva
Currently, the 7100 ventilator is available in the Aestiva machine and the
Aespire machine. Since the 7100 ventilator functions identically in either
machine, the System Type setting is displayed as “Aestiva.” The cursor will skip
over this selection.
Flow Sensor Correction Lead Filter Off — Lead Filter On
This setting relates to the MIA/VMB board. For current MIA/VMB assemblies,
this setting should be Lead Filter Off.
O2 Monitoring Enabled — Disabled (if site preference)
May not appear in some configurations.
Volume Monitoring Enabled — Disabled (if site preference)
May not appear in some configurations.
If “Volume Monitoring” is set to “Disabled,”
“Volume Compensation” is automatically set to “Disabled.”
Volume Compensation Enabled — Disabled (if site preference)
May not appear in some configurations.
Pressure Mode Enabled — Disabled (if site preference)
May not appear in some configurations.
Pressure Waveform Enabled — Disabled (if site preference)
May not appear in some configurations.
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4.9Calibrations The Calibrations menu includes service level calibrations of components that
need periodic adjustment to maintain specified accuracy.
Remarks You can enter these procedure in any order. However, the procedures appear
in a logical sequence. Some of the latter procedures require you to have
completed some of the earlier procedures.
Additionally, these procedures require you to disassemble and reassemble
parts of the breathing system. Accordingly, the procedures are arranged to
minimize the disassembly and reassembly process.
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4.9.1
O2 Calibrations
The O2 Calibrations take into account the altitude setting. Before starting the
calibrations, ensure that the altitude setting (in “System Configuration” menu)
is set to the appropriate altitude for the machine location.
For the “21% O2 Calibration” software reads the A/D value for the O2 sensor
when the O2 sensor is exposed to room air (21% O2).
• If this A/D value is not within the tolerance, the calibration fails.
• If the calibration passes, the A/D value is stored in the EEPROM.
The sensor must be calibrated at 21% O2 before calibration at 100% O2.
Remarks Remove the O2 sensor from the breathing system and expose it to room air.
The displayed reading should be 21% ± 2% to pass the calibration
requirements.
Place the sensor that passed the 21% test in the breathing system and expose
it to 100% O2.
If it displays readings higher or lower than required to pass, replace the sensor.
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4.9.2
Zero
Flow and Airway Sensors
The Zero Flow and Airway Sensors procedure
• zeros any offset in the amplifier for the airway pressure sensor
• determines the zero value for the inspiratory flow and expiratory flow
measurement differential pressure transducers.
It does so by reading the A/D values for inspiratory flow, expiratory flow, and
airway pressure when the flow sensors have been disconnected from the
breathing system.
• If the calibration passes, the offset and zero values are stored in the
EEPROM.
• If the A/D values are not within the correct tolerance the calibration
fails.
If the calibration fails, the screen will display the reason for the failure.
Remarks Ensure that the flow sensor module is disconnected from the breathing system.
“Fail” indicates a problem in the MIA/VMB (Inspiratory Flow and Expiratory
Flow transducers) or the PEB/VEB (Airway Pressure transducer).
Check the transducer outputs using the “Display A/D Channels” menu (on
“Diagnostics” menu).
If any of the transducers are out of tolerance:
• Follow Section 5.4.3, “Inaccurate Volume Ventilation
Troubleshooting,” for issues with inspiratory and expiratory flow
transducers.
• Replace the PEB/VEB assemblies, for issues with the airway pressure
transducer.
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4.9.3
Adjust
Drive Gas Regulator
The Adjust Drive Gas Regulator procedure establishes the required flow rate
through the drive gas regulator for proper calibration.
Remarks The drive gas regulator should provide a constant gas input pressure of
172 kPa (25 psi).
You can verify this pressure by attaching a pressure test device to the
regulator pressure port (shown below) and adjusting the regulator to
172 ±17.2 kPa (25 ±0.25 psi).
Regulator
pressure
port
Aestiva machine Aespire machine
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4.9.4
Airway Sensor Span
The Airway Sensor Span procedure calculates a gain coefficient for the airway
pressure transducer.
Calibration setup
(Aestiva machine)
1. Disassemble the breathing system to the point where you can remove the
exhalation valve.
• Remove: flow sensor module, breathing circuit module, bag arm,
open control panel, bellows assembly, main manifold, and
exhalation valve.
2. Reassemble the breathing system leaving out the exhalation valve,
bellows assembly, and bag arm.
• Replace: main manifold, close control panel, breathing circuit
module, and flow sensor module.
3. Attach a patient circuit tube to the Calibrated Flow Orifice test tool.
4. Insert the Calibrated Flow Orifice into the manifold (PEEP) port.
5. Connect a pressure sensing tee to the inspiratory flow patient connection.
6. Connect the open end of the patient circuit tube to the flow port of the
pressure sensing tee.
7. Connect a manometer to the pressure sensing port of the tee connector.
8. Refer to next page for calibration procedure
Calibrated Flow Orifice
1504-3005-000
for the Aestiva machine
(refer to Note in Section 8.2)
To manometer
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Calibration setup
(Aespire machine)
1. Remove the ABS breathing system from the machine.
2. Remove the Exhalation Valve.
3. Separate the Bellows Module from the Circuit Module.
4. Install the Circuit Module only.
5. Attach a patient circuit tube to the Calibrated Flow Orifice test tool.
Note: The Calibrated Flow Orifice for the Aespire has the same orifice size
as the Calibrated Flow Orifice for the Aestiva; however, the Aestiva orifice
has a larger outside dimension that does not fit through the Vent Engine
cover plate. To use the Aestiva orifice with an Aespire machine, you
,must
remove the cover plate to access the manifold port.
6. Insert the Calibrated Flow Orifice into the manifold (PEEP) port.
7. Connect a pressure sensing tee to the inspiratory flow patient connection.
8. Connect the open end of the patient circuit tube to the flow port of the
pressure sensing tee.
9. Connect a manometer to the pressure sensing port of the tee connector.
Calibration procedure 1. Select “Set PEEP Valve.”
2. Adjust the PEEP Valve “counts” until the manometer reads
100 ±0.3 cm H2O (this will be at counts greater than 2500).
3. Press the control knob to activate the test at the selected PEEP Valve
counts.
4. With the manometer at 100 cm H2O, select “Save Airway Sensor Span.”
5. If the calibration fails, the screen will display the reason for the failure.
Remarks If the “Set PEEP Valve” value is set too high, pressure in the circuit may exceed
109 cm H20 and trip the pressure limit switch. If this happens, lower the “Set
PEEP Valve” value.
Calibrated Flow Orifice
1504-3016-000
for the Aespire machine
To manometer
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4.9.5
PEEP Valve Calibration
The PEEP Valve Calibration should be performed:
• when the machine is first put into service.
• at prescribed, planned maintenance intervals.
• after the pneumatic engine has been serviced.
Calibration setup After completing the “Airway Sensor Span” calibration in the previous section,
remove the pressure sensing tee and connect the open end of the patient
circuit tube directly to the inspiratory flow patient connection.
• If you are only performing the PEEP Valve calibration, connect the
Calibrated Flow Orifice as detailed in the “Airway Sensor Span” setup.
Then, connect the open end of the patient circuit tube directly to the
inspiratory flow patient connection.
Calibration procedure 1. To enter the calibration menu, select “Next PEEP Valve Cal Menu”.
2. Establish drive gas for the ventilator.
3. Set all flow controls to minimum.
4. To start calibration, select “Start PEEP Valve Calibration”.
Note: This calibration procedure may take up to 20 minutes.
The calibration status and progression bar are displayed at the bottom of the
screen.
If the calibration fails, the screen will display the reason for the failure.
(Ensure that the test tubing is leak free.)
Remarks The calibration routine opens the PEEP valve stepwise and reads the resulting
airway pressure. The accumulated values represent the output linearity curve
for this particular PEEP valve. The accumulated data include:
• Lower PEEP Valve Curve
• Upper PEEP Valve Curve
• PEEP Temperature Comp
• PEEP Nominal Resistance
The data is stored in EEPROM and is used during normal operation to
compensate for the individual valves output characteristics.
Scroll Data To view the stored data, select “Scroll Data”.
Real-Time
Value
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4.9.6
Inspiratory Valve
Calibration
The Inspiratory Valve Calibration should be performed:
• when the machine is first put into service.
• at prescribed, planned maintenance intervals.
• after the pneumatic engine has been serviced.
Calibration setup 1. Remove the bellows and pressure relief valve (pop-off) from the bellows
assembly.
• Remove the bellow housing.
• Remove the bellows and bellows mounting rim as an assembly.
• Remove the pressure relief valve.
• Replace the bellows housing.
• Note: If you have just completed the PEEP Valve Calibration, remove
these parts from the bellows assembly and then reassemble the
breathing system.
2. Attach a patient circuit tube to the Calibrated Flow Orifice test tool.
3. Connect the open end of the patient circuit tube to the inspiratory flow
patient connection.
4. Set the Bag/Vent switch to Vent.
5. Establish drive gas for the ventilator.
6. Adjust fresh gas flow so the actual Airway Pressure reads 1.05 cm H2O.
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Calibration procedure 1. To enter the calibration menu, select “Next Inspiratory Valve Cal Menu”.
2. To start calibration, select “Start Inspiratory Valve Calibration”.
Note: This calibration procedure may take up to 5 minutes.
The calibration status and progression bar are displayed at the bottom of the
screen.
If the calibration fails, the screen will display the reason for the failure.
Remarks With the bellows removed from the bellows assembly, the output from the
inspiratory valve is routed through the breathing system to the Airway Pressure
transducer. The calibrated orifice provides a precise restriction to the flow.
The calibration routine opens the Inspiratory valve stepwise and reads the
resulting pressure at the airway pressure transducer. The inspiratory flow
displayed on the screen for this test is a calculation of the pressure measured
by the airway pressure transducer times a constant (based on the size of the
orifice in the test tool).
The accumulated values represent the output linearity curve for this particular
Inspiratory valve.
The data is stored in EEPROM and is used during normal operation to
compensate for the individual valves output characteristics.
Scroll Data To view the stored data, select “Scroll Data”.
Real-Time Value
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4.9.7
Pressure Sensitivity
The Pressure Sensitivity calibration calculates correction factors for common
mode pressure sensitivity of the differential pressure transducers. The pressure
transducers must be calibrated whenever the MIA/VMB or the Control Board is
replaced.
This pressure sensitivity calibration is not an automated calibration. Follow the
prompts on the screen to complete the calibration. The routine calculates the
pressure sensitivity at four different pressures (10, 20, 40, and 60 cm H2O)
and extrapolates the fifth pressure point (70 cm H2O). It uses these five
pressure points along with the zero offsets to find the pressure sensitivity.
• If the calibration passed, the five pressure sensitivity points are
stored in the EEPROM.
• If the calculations for the pressure sensitivity are not within the correct
tolerance, the calibration fails.
If the calibration fails, the screen will display the reason for the failure.
Calibration procedure 1. Perform the “Zero Flow and Airway Sensors” calibration.
2. Perform the “Airway Sensor Span”.
3. Occlude the opening at the bag arm
4. Connect short patient tubing from the inspiratory flow patient connection
to the expiratory flow patient connection.
5. Set the Bag /Vent switch to the Bag position.
6. Select “Next Pressure Sensitivity Menu” for the next calibration menu.
4 Tests and Calibration
1006-0836-000 02/03 4-21
7. To start calibration select “Start Pressure Sensitivity Cal”.
• Adjust the APL and fresh gas flow until the real-time pressure reads a
stable 10 cm H2O — after 5 seconds, select “Save Value”.
• Adjust the APL and fresh gas flow until the real-time pressure reads a
stable 20 cm H2O — after 5 seconds, select “Save Value”.
• Adjust the APL and fresh gas flow until the real-time pressure reads a
stable 40 cm H2O — after 5 seconds, select “Save Value”.
• Adjust the APL and fresh gas flow until the real-time pressure reads a
stable 60 cm H2O — after 5 seconds, select “Save Value”.
Real-Time Value
7100 Anesthesia Ventilator
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4.9.8
Service Calibrations
Required
The Service Calibrations Required W menu displays which setting or
calibration must be performed when the “Service Calibration w” alarm
appears in normal operation. After the setting or calibration is properly
completed, the text for that setting or calibration will be removed.
Remarks The normal operation “Service Calibration w” alarm message is only removed
when all the required settings or calibrations are completed.
The Set “Service Calibration W” menu item is used by the factory to activate
the “Service Calibration w” alarm and require
,that all settings and calibrations
be performed when the machine is set up for operation at its permanent
location.
You can reset the “Service Calibration w” alarm in the field by selecting
“Yes” when the following warning appears after selecting the
“Set Service Calibration W” menu item.
4 Tests and Calibration
1006-0836-000 02/03 4-23
4.10 Diagnostic Tests/Tools
The Diagnostic Tests/Tools menu includes a selection of items that look at
individual subsystems of the 7100 Ventilator.
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4-24 02/03 1006-0836-000
4.10.1
Display A/D Channels
The Display A/D Channels menu displays the measured values for each of the
A/D channels.
Remarks The Counts and Actual values are typical for a calibrated system with baseline
inputs to the various sensors.
Refer to the following table for additional details for each of the displayed
channels.
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1006-0836-000 02/03 4-25
Notes:
1. The Counts column shows typical digital counts from the computer with the expected (range) shown in parenthesis.
2. The Actual column shows current values in real time with inputs in their baseline state.
A/D Channel Counts1
(range)
Actual2 Range Comments
Inspiratory Flow 2050
(1800-2300)
0.000 L/min -120 to 120 L/min Zero Offset Reading (nominal 2050 Counts)
Increased flow = more counts/more positive
Expiratory Flow 2050
(1800-2300)
0.000 L/min -120 to 120 L/min Zero Offset Reading (nominal 2050 Counts)
Increased flow = less counts/more negative
Airway Pressure 800
(550-1050)
0.000 cmH2O -20 to 120 cmH2O Zero Offset Reading (nominal 800 Counts)
O2 377
(0-4095)
21.000% 0 to 100% Count weight and limits are determined during
O2 calibration
Flow Valve Volt 0
(0-4095)
0.000 Volts 0 to 6.140 Volts
PEEP Valve Volt 0
(0-4095)
0.000 Volts 0 to 6.140 Volts
Flow DAC Feedback 0
(0-4095)
0.000 Volts 0 to 4.095 Volts
PEEP DAC Feedback 0
(0-4095)
0.000 Volts 0 to 4.095 Volts
1.225 Volt Ref 1.225
(1214-1235)
1.225 Volts 1.214 to 1.235 Volts
+12V 10VA Supply 2041 11.975 Volts 10.5 to 13.5 Volts 12V-10VA Test Out-of-Range
(Minimum Shutdown)
+12V Analog Supply 2050 12.027 Volts 10.5 to 13.5 Volts +12V Analog Out-of-Range
(Minimum Shutdown)
-12V Analog Supply 396 -12.071 Volts -10.2 to -13.86 Volts -12V Analog Out-of-Range
(Minimum Shutdown)
Battery Voltage 3609 7.215 Volts 0 to 8.220 Volts > 8 Volts (10 sec) = Battery Failure High
< 5.65 Volts = Low Battery Voltage
< 2 Volts = Battery Failure Low
Battery Current 997 -0.008 Amps -2 to 6.190 Amps < -750 mA = Battery Charger Fail
-330 to -700 mA (1 min) = Battery charging w
>600 mA (10 sec)= On Battery-Power OK?
>6 Amps (10 sec) = Battery Current High
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4.10.2
Display
Discrete I/O Signals
The Display Discrete I/O Signals menu displays discrete binary signals
associated with machine switch positions.
There are several types of switches in the machine:
• some switches are mechanically operated,
• some switches are pneumatically operated,
• some switches are electronic,
• some “switches” are software derived.
Mechanical switches • ACGO Switch — Vent or Aux CGO (machines equipped with ACGO)
• CO2 Bypass — Off or On (Off by default in Aespire machines)
• Canister Status — Closed or Open (Closed by default in Aespire machines)
• Control Panel Cover — Closed or Open (refers to removal of ABS on Aespire
machines)
• Bag/Vent Status — Vent or Bag
Pneumatic switches • O2 Supply Pressure — Pressure or No Pressure
• O2 Flush — Off or On
• Supply Pressure — Pressure or Low Pressure (drive gas)
Electronic switches • O2 Sensor Status — Connected or Disconnected
• Circuit module ID
(Hard-wired to indicate Circle Module on Aespire machines)
• Pressure Limit Status — Off or On (if Paw exceeds 108 cm H2O)
Software “switches” • Safety Valve Circuit — Pass or Fail
• VBUS Voltage — Pass or Fail
Module Switch One Switch Two Switch Three
Circle Off Off On
Bain/Mapleson D On Off Off
(no module) On On On
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1006-0836-000 02/03 4-27
4.10.3
Display Battery Status
The Display Battery Status menu displays the battery charge status.
Battery Status
(on line power)
“Battery Charged” — If none of the following conditions are in effect.
“Battery Charging w” — Battery Current = -330 to -700 mA
“Battery Failure Low” — Battery Voltage <2 Volts
“Battery Failure High” — Battery Voltage >8 Volts
“Battery Current High” — Battery Current >6 Amps
“Battery Charger Fail” — Battery Current < -750 mA
Battery Status
(on battery power)
“On Battery-Power OK?” — System is running on battery.
“Low Battery Voltage” — Battery Voltage <5.65 Volts
Remarks While the battery is charging, the battery current is displayed as negative
current. If the battery has been on charge for a long time (8 hours minimum)
and you do not get a “Battery Charged” display:
• The battery has failed and you should replace it.
When the battery is discharging, the battery current is displayed as positive
current. Disconnect the power cord and observe the discharge current.
• A good, fully-charged battery should maintain a steady discharge
current (for at least 30 minutes under normal operation).
• If the discharge current and battery voltage drops off quickly, the
battery has failed and you should replace it.
wwww Warning Depending on the battery condition and the ventilator settings,
continued operation of the mechanical ventilation may result in sudden
shut down.
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4.10.4
Test Panel Switches
In the Test Panel Switches menu the software is set up to receive keyboard
button presses and rotary encoder turns.
Press each button on the panel and the control knob.
• When a button is pressed, the icon on the screen next to the button
should be highlighted and filled with a checkmark.
• When the button is released, the button icon should be reverse-
highlighted.
After testing all the buttons and the control knob, select “Test Encoder Knob
Turn” to test the encoder.
As you turn the encoder knob, verify that:
• each click of the encoder in the clockwise direction increments the
clockwise total.
• each click of the encoder in the counterclockwise direction
increments the counterclockwise total.
Remarks If any of the select buttons test fails, replace the front panel keyboard
assembly.
If the encoder knob test fails, replace the rotary encoder assembly.
✓
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4.10.5
Valves - Test Tool
The Valves - Test Tool menu allows you to manually control the Inspiratory
Valve, the PEEP Valve, and the PEEP Safety Valve, and observe key pressure
and flow measurements on the same screen.
This menu is mainly used to test the drive gas circuit or to supply drive gas flow
for several tests:
• It is used to test the mechanical overpressure valve as detailed in
section 6.4 of this manual, “MOPV pressure relief valve test.”
• It is used to check primary regulators as detailed in section 6 of the
anesthesia machine Technical Reference Manual.
Set Inspiratory Valve The flow through the Inspiratory Valve can be set:
• from Off to 70 L/min in 0.25 L/min increments.
Set PEEP Valve The PEEP Valve can be set:
• from Off to 100 cm H2O in 0.5 cm H2O increments.
Set PEEP Safety Valve The PEEP Safety Valve can be set:
• Closed or Open
Remarks When setting the Inspiratory Valve or the PEEP Valve:
• Turn the encoder clockwise to increase the values.
• Turn the encoder counterclockwise to begin at the maximum and to
decrease the values.
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4.10.6
Test CPU and Memory
When you start the CPU and Memory Tests, the procedure cycles through the
CPU, RAM, Display RAM, and ROM tests until you stop the tests. The procedure
keeps track of how many times each test passed or failed.
If you note that any of these tests have failed, replace the
,control board.
CPU Test The software tests the CPU integer instructions as well as the CPU register(s). If
this test fails, the CPU did not perform an integer instruction correctly, or the
CPU register(s) have failed.
RAM Test The software tests all of the external RAM memory with a walking bit pattern
test. It writes a certain bit pattern to a block of memory and then reads that
block of memory. If the bit pattern that it wrote is not the same bit pattern that
it reads back the test fails.
Display RAM Test The software tests all of the display RAM memory via a walking bit pattern test.
It writes a certain bit pattern to a block of memory and then reads that block of
memory. If the bit pattern that was written is not the same bit pattern that it
reads back the test fails.
ROM Test The software tests the Flash ROM via a CRC check (Cyclic Redundancy Check).
A CRC value has been calculated for the Flash ROM memory and this value is
stored in the Flash ROM. This test recalculates the CRC for the Flash ROM and
compares it to the value stored in Flash ROM. If the value that was calculated
does not equal the value that was stored in Flash ROM, the test will fail.
4 Tests and Calibration
1006-0836-000 02/03 4-31
4.10.7
Test EEPROM
When you start the EEPROM Test, the procedure performs the test once and
notes whether the test passed or failed.
If the EEPROM test fails, replace the control board.
EEPROM Test The software tests all of the EEPROM memory via a bit pattern test. It writes a
certain pattern to a block of memory and then reads that block of memory. If
the bit pattern that was written is not the same as the bit pattern read back, the
test fails.
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4.10.8
Test Serial Port
The Test Serial Port menu includes directions for two tests.
• External Serial Port Testing: The external test requires that you
jumper pins 6 and 13 of the serial connector.
• Internal Serial Port Testing: The internal test does not require any
setup; it only tests serial port related components on the control
board.
Each test routine sets up the serial port circuits so transmit data is echoed
directly back to the receive circuits. The test fails if the data sent out is not
equal to the data received.
Remarks If only the internal test fails, replace the control board.
If both tests fail:
• Check the harness connections between the control board and the
Serial board (SAB/SICB).
• Check the ribbon cable between the SAB and the external connector.
• Replace the SAB/SCIB.
6
13
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1006-0836-000 02/03 4-33
4.10.9
Test 5V Fail Alarm
The 5-Volt supply (VDD) is derived in the power section of the control board. It
is used to power the digital circuits throughout the ventilator. If the 5-Volt
supply fails, the ventilator will sound a continuous alarm tone when the system
switch is turned on.
To Test the 5V Fail Alarm, follow the directions on the screen.
Remarks If the alarm tone does not sound, replace the control board.
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4-34 02/03 1006-0836-000
4.10.10
Test Inspiratory Valve
This test only checks the control circuit for the Inspiratory Valve. Since it does
not look at the output of the Inspiratory Valve, you do not have to have an active
drive gas supply.
To Test the Inspiratory Valve the software opens the inspiratory valve in
increments until the flow valve is completely open.
• At each of the settings of the inspiratory valve the A/D channel for
Flow DAC Feedback is recorded.
• If the A/D for the Flow DAC Feedback is not within the correct
tolerance the test fails.
Remarks A failure can be caused either by the control circuit or a flow valve malfunction.
To check the control circuit,
1. Go to the “Valves - Test Tool” menu.
2. Set the Inspiratory Valve to 0.25 L/min. The “Flow Valve Volt” reading
should increase slightly.
3. If the reading jumps high (~ 6 Volts), the control circuit for the Inspiratory
Valve is open or the Inspiratory Valve is defective.
4. Measure the resistance between the leads at the unplugged Inspiratory
Valve connector. A multimeter should read 1.5 ±0.15 ohms.
4 Tests and Calibration
1006-0836-000 02/03 4-35
4.10.11
Test PEEP Valve
This test only checks the control circuit for the PEEP Valve. Since it does not
look at the output of the PEEP Valve, you do not have to have an active drive
gas supply.
To Test the PEEP Valve the software opens the PEEP valve in increments until
the PEEP valve is completely open.
• At each of the settings of the PEEP valve the A/D channel for PEEP
DAC Feedback is recorded.
• If the A/D for the Flow DAC Feedback is not within the correct
tolerance the test fails.
Remarks A failure can be caused either by the control circuit or a PEEP Valve
malfunction.
To check the control circuit,
1. Go to the “Valves - Test Tool” menu.
2. With the PEEP Valve set to “Off”, the “PEEP Valve Volts” should read near
0.000 Volts.
3. If the reading is high (~ 6 Volts), the control circuit for the PEEP Valve is
open or the PEEP Valve is defective.
4. Measure the resistance between the open terminals of the PEEP Valve
(blue). A multimeter should read 10 ±1 ohm.
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4.10.12
Test PEEP Safety Valve
This test requires an active drive gas supply.
To Test the PEEP Safety Valve the software opens the PEEP Safety Valve and
checks the output of the Supply Pressure Switch.
• If the Supply Pressure Switch detects pressure, the PEEP Safety Valve
test passes.
• If the Supply Pressure Switch does not detect pressure, the PEEP
Safety Valve test fails.
Remarks A failure can be caused either by the control circuit or a PEEP Safety Valve
malfunction.
To check the control circuit,
1. Go to the “Valves - Test Tool” menu.
2. Set the PEEP Safety Valve to “Open” and listen for a “click” in the area of
the pneumatic engine.
3. If you do not hear a “click” each time the PEEP Safety Valve is opened, the
control circuit to the PEEP Safety Valve is open or the PEEP Safety Valve is
defective.
4. Measure the resistance between the open terminals of the PEEP Safety
Valve (white). A multimeter should read 10 ±1 ohm.
4 Tests and Calibration
1006-0836-000 02/03 4-37
4.10.13
Breathing System Leak
Test
You can estimate how much of a leak there is in the ventilator portion of the
breathing system by closing the patient circuit, inflating the bellows, and
observing how quickly they fall on their own weight (part of machine checkout
procedure).
The Breathing System Leak Test allows you to more precisely test the
ventilator portion of the breathing system for leaks.
Remarks By using the patient circuit to establish a closed loop, you can measure the
leak rate.
• The leak rate is the fresh gas flow needed to maintain 30 cm H2O.
• The system should have a leak rate < 200 mL/min.
Note regarding plug:
On an Aespire machine
the plug is located on the
side of the ABS.
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4.10.14
Test
Pressure Limit Circuit
The airway pressure limit circuit should trip at approximately 109 cm H2O.
The Test Pressure Limit Circuit routine:
• establishes a closed patient airway circuit,
• increments the pressure in the airway circuit,
• observes the output of the airway pressure transducer,
• notes at what pressure the “pressure limit circuit” trips.
Test setup
(Aestiva machine)
1. Disassemble the breathing system to the point where you can remove the
exhalation valve.
• Remove: flow sensor module, breathing circuit module, bag arm,
open control panel, bellows assembly, main manifold, and
exhalation valve.
2. Reassemble the breathing system leaving out the exhalation valve,
bellows assembly, and bag arm.
• Replace: main manifold, close control panel, breathing circuit
module, and flow sensor module.
3. Set the Bag/Vent switch
,to Vent.
4. Attach a patient circuit tube to the Calibrated Flow Orifice test tool.
5. Insert the Calibrated Flow Orifice into the manifold (PEEP) port.
6. Connect the open end of the patient circuit tube to the inspiratory flow
patient connection.
7. Refer to next page for test procedure
Calibrated Flow Orifice
1504-3005-000
for the Aestiva machine
(refer to Note in Section 8.2)
4 Tests and Calibration
1006-0836-000 02/03 4-39
Test setup
(Aespire machine)
1. Remove the ABS breathing system from the machine.
2. Remove the Exhalation Valve.
3. Separate the Bellows Module from the Circuit Module.
4. Install the Circuit Module only.
5. Set the Bag/Vent switch to Vent.
6. Attach a patient circuit tube to the Calibrated Flow Orifice test tool.
Note: The Calibrated Flow Orifice for the Aespire has the same orifice size
as the Calibrated Flow Orifice for the Aestiva; however, the Aestiva orifice
has a larger outside dimension that does not fit through the Vent Engine
cover plate. To use the Aestiva orifice with an Aespire machine, you must
remove the cover plate to access the manifold port.
7. Insert the Calibrated Flow Orifice into the manifold (PEEP) port.
8. Connect the open end of the patient circuit tube to the inspiratory flow
patient connection.
Test Procedure 1. Select “Start Test Pressure Limit Circuit” to start the test.
If the “Test Pressure Limit Circuit” trip point is approximately 109 cm H2O,
the test passes.
Calibrated Flow Orifice
1504-3016-000
for the Aespire machine
7100 Anesthesia Ventilator
4-40 02/03 1006-0836-000
4.11 Upgrade Options
The Upgrade Options menu shows what features are currently available in the
ventilator’s software.
The ventilator can be upgraded to include additional features by entering the
upgrade “Key Code” that the customer has purchased.
Remarks Select each “digit” in the “Enter Key to Install Upgrade(s):” field and rotate the
control knob to select the corresponding digit in the Key Code.
When you have entered all the digits, select “Confirm Key And Upgrade.”
After verifying the Key Code match to the Control Board ID, the menu will
display the newly installed features.
Note If the ventilator “Key Code” is changed, the new code should be recorded on
the display module rear panel label.
1 5 7 2 Q A 1
1006-0836-000 02/03 5-1
5 Troubleshooting
wwww WARNING Post-Service Checkout is required after you complete this section. You must
perform Section “3/Post-Service Checkout” after performing any maintenance,
service or repair. Failure to do so may result in patient injury.
In this section 5.1 Troubleshooting instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
5.2 Troubleshooting guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
5.3 Alarm and Error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4
5.4 Troubleshooting Flowcharts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
5.4.1 Ventilator assessment process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
5.4.2 No display troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
5.4.3 Inaccurate volume ventilation troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17
5.4.5.B VMB board evaluation (Aespire machine) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
5.4.6 No ventilation troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20
5.4.7 High intrinsic PEEP troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21
7100 Anesthesia Ventilator
5-2 02/03 1006-0836-000
5.1 Troubleshooting instructions
Some ventilator problems may not generate any ventilator messages, even
though the ventilator may not be functioning correctly:
• Refer to section 5.2 Troubleshooting guide.
For ventilator problems that result in an Alarm or Error message:
• Refer to section 5.3 Alarm and Error messages.
To help isolate a problem:
• Refer to section 5.4 Troubleshooting Flowcharts.
5.2 Troubleshooting guide
Symptom Probable cause Action
• Continuous alarm
sounds whenever
system switch is turned
On — 5V Fail Alarm
1. Failure in power section of Control Board. 1. Replace Control Board.
The Control Board includes a hardware generated alarm that sounds continuously if the 5 volt supply
fails.
Symptom Probable cause Action
• AC LED not lit
(Power cord plugged into
live receptacle; AC Inlet
circuit breaker On)
(The problem is most likely
in the +6V supply or in
the LED circuit.)
1. Blown fuses in Control Module’s AC receptacle
2. Universal power supply
3. Front panel keyboard (LED is part of it)
4. Control board
1. Check/replace fuses.
2. Check power supply output.
3. Check ribbon cable connection; replace front
panel keyboard.
4. +6V-------R11------ to LED; replace Control Board.
The LED is powered by the +6V supply from the universal power supply. Turn system switch to On. If ventilator operates from the
backup battery, check 1 and 2. If ventilator operates from line power, check 3 and 4.
Symptom Probable cause Action
• Nothing happens when
System switch is
turned On
(The problem is most likely
somewhere between
the system switch and
the control board.)
1. Cable from J11 of Control Board to SAB/SICB.
2. Cable from System Switch to SAB/SICB.
3. Serial Adapter Board (SAB -Aestiva)
Serial Isolation Connector Board
(SICB - Aespire)
1. Check/jumper cable connection; replace cable.
2. Check cable connection; replace cable.
3. Replace SAB/SICB.
Turning the system switch to On should pull the RRRReeeemmmm____OOOOnnnn signal low on the control board. The above actions verifies the integrity of
the RRRReeeemmmm____OOOOnnnn signal path. First, jumper pins 8 and 15 of J11 on control board to verify that the control board itself is OK.
5 Troubleshooting
1006-0836-000 02/03 5-3
Symptom Probable cause Action
• No display
(System switch On;
LED lit;
Fan running)
(The problem is most likely
in the Control Module.)
1. Ribbon cable, control board to LCD display
2. LCD display
3. Control board
1. Check cable connection.
2. Replace LCD display.
3. Replace control board.
The lit LED indicates that AC power is getting to the power supply. The power supply is most likely OK since it’s supplying the 6V
(VVVVMMMMAAAAIIIINNNN) to power the LED and fan (and the rest of the circuitry).
Symptom Probable cause Action
• Fan doesn’t run
(Everything else OK)
(The problem is most likely
the fan or control
board.)
1. Fan harness
2. Fan
3. Control board
1. Ensure fan harness is plugged in.
2. Replace fan.
3. Replace control board.
Power for the fan (derived from VVVVBBBBUUUUSSSS) comes from the Power Section of the control board.
Symptom Probable cause Action
• No alarm audio
(Alarm messages OK)
(The problem is most likely
the speaker or control
board.)
1. Speaker cable
2. Speaker
3. Control board
1. Ensure cable is plugged in.
2. Replace speaker.
4. Replace control board.
Power for the speaker comes from the Power Section of the control board. Drive for the speaker comes from the Digital Section of
the control board.
7100 Anesthesia Ventilator
5-4 02/03 1006-0836-000
5.3 Alarm and Error messages
The Service Mode (refer to section 4) includes a log of the 20 most recent
Alarm messages (not shaded) and Error messages (shaded) experienced by
the ventilator system.
If a User Alarm persists after the recommended action has been performed,
the message indicates the probable component and related circuit that needs
repair. Use the Service Mode tests to isolate the fault. The items in the Service
Repair column indicate the
,path from the named component to the control
board.
Alarm Message
Error Message
Message Alarm/Error Cause User Action/Concerns Service Repair
12 Hour Test w User Alarm System in use for more than
12 hours without a
powerup self test.
At end of case, move the system
switch from On to Standby to
On.
+12V Analog
Out-of- Range
Error
Minimum
Shutdown
Ventilator malfunction. Ventilate manually.
Monitoring is not reliable.
Replace:
• Control Board.
-12V Analog
Out-of- Range
Error
Minimum
Shutdown
Ventilator malfunction. Ventilate manually.
Monitoring is not reliable.
Replace:
• Control Board.
12V -10VA Test
Out-of-Range
Error
Minimum
Shutdown
Ventilator malfunction. Ventilate manually.
Monitoring is not reliable.
Replace:
• Control Board.
Absorber Panel Open User Alarm The top panel on Aestiva is
not completely closed.
ABS on Aespire in not
completely engaged.
Close the panel.
Reinstall ABS.
If persists, check:
• Panel switch
• Harness to MIA/
VMB
• MIA/VMB
• Cable to CB/J12
A/D Converter
Failure
Error
Minimum
Shutdown
Ventilator malfunction. Ventilate manually.
Monitoring is not reliable.
Replace:
• Control Board.
Apnea Alarm
Standby
User Alarm Normal condition after End
Case, powerup, or ACGO
change from On to Off.
Monitoring resumes after first
breath (mechanical) or 2
breaths within 30 sec (non-
mechanical).
Apnea Alarm Off User Alarm The cardiac bypass option is
selected (Alarm Settings
menu).
Apnea alarms are turned off
when this option is selected.
5 Troubleshooting
1006-0836-000 02/03 5-5
Aux Gas Outlet On User Alarm The outlet selection switch is
set to the auxiliary
common gas outlet.
Connect the patient circuit to the
auxiliary outlet.
For mechanical ventilation or
ventilation with monitoring,
select the common gas outlet.
If persists, check:
• ACGO switch
• MIA/VMB
• Cable to CB/J12
Battery Charger Fail User Alarm The current in the battery
charging circuit is too
high.
System is operational, but may
fail on battery if mains power
is lost.
Replace:
• Battery
• Control Board
Battery Charging w User Alarm Battery is not fully charged. Leave the system plugged in to
charge the battery. If power
fails, the total backup time
will be < 30 minutes.
If persists, replace:
• Battery
• Control Board
Battery Current High User Alarm Battery current > 6 amps for
10 seconds.
System is operational, but may
fail on battery if mains power
is lost.
If persists, replace:
• Battery
• Control Board
Battery Failure High User Alarm Battery voltage > 8 V for
10 seconds.
System is operational, but may
fail on battery if mains power
is lost.
If persists, replace:
• Battery
• Control Board
Battery Failure Low User Alarm The battery voltage is too low
(< 2 V) to supply the
system if power fails.
System is operational, but may
fail on battery if mains power
is lost.
Leave the system plugged in to
charge the battery.
If persists, replace:
• Battery
• Control Board
Cal Flow Sensors User Alarm The last flow sensor
calibration failed.
Calibrate the flow sensors.
Look for water in the flow sensor
tubes and dry if necessary.
Replace sensor if necessary.
This alarm message
indicates that the
last flow sensor’s
differential
pressure
transducer
calibration failed.
With the BTV switch
in Bag, ensure
sensors are
removed until the
“No Insp / No Exp
flow Sensor”
messages appear.
If persists, replace:
• MIA/VMB
• Control Board
Calibrate O2 Sensor User Alarm Calibration failure or
O2% >110%
Does the sensor measure
21% O2 in room air?
Replace sensor if necessary.
If persists, Check:
• O2 sensor cable
• MIA/VMB
• Cable to CB/J12
Message Alarm/Error Cause User Action/Concerns Service Repair
7100 Anesthesia Ventilator
5-6 02/03 1006-0836-000
Canister Open User Alarm The canister release is open,
causing a large leak
(Aestiva only).
(Closed by default in Aespire
machine.)
Close the canister release. If persists, check:
• Canister switch
• Harness to MIA/
VMB
• MIA/VMB
• Cable to CB/J12
Cardiac Bypass User Alarm The alarm limit settings are
set for a patient on
cardiac bypass.
Apnea alarms are off.
Use the alarm limits menu to
change this setting.
Check Flw Sensors
w
User Alarm System has detected an
improper flow pattern in
the breathing circuit.
Are the flow sensors correctly
installed?
Water build up in the flow sensor
tubes?
Is a flow sensor tube cracked or
broken?
Improper check valve operation?
Inspect one-way valves.
Replace flow sensor module with
the spare. Check the
condition of the flow sensor
and its tubing.
Circuit Leak Audio
Off
User Alarm Control setting on the Alarm
Settings menu.
This message tells you that the
audio alarm for circuit leaks
was turned off.
Connect O2 Sensor User Alarm The O2 sensor is not
connected to the cable.
Connect the sensor. If persists, Check:
• O2 sensor cable
• MIA/VMB
• Cable to CB/J12
CPU Failure Error
Minimum
Shutdown
Ventilator malfunction. Ventilate manually.
Monitoring is not reliable.
Replace:
• Control Board.
CPU Internal Error Error
Minimum
Shutdown
Ventilator malfunction. Ventilate manually.
Monitoring is not reliable.
Replace:
• Control Board.
Exp Flow Sensor Fail User Alarm System cannot read the
calibration data stored in
the sensor.
Operation continues with
reduced accuracy.
Replace the flow sensor.
Message Alarm/Error Cause User Action/Concerns Service Repair
5 Troubleshooting
1006-0836-000 02/03 5-7
Exp Reverse Flow User Alarm Flow through the expiratory
sensor during inspiration
(for 6 breaths in a row).
Look at the check valves.
Water build up in the flow sensor
tubes?
Is a flow sensor tube cracked or
broken?
Replace the expiratory check
valve.
Check the flow sensor condition.
Flow Valve (DAC)
Failure
Error
Minimum
Monitoring
Ventilator malfunction. Ventilate manually.
Monitoring is still available.
Replace:
• Control Board.
Flow Valve (Voltage)
Failure
Error
Minimum
Monitoring
Ventilator malfunction. Ventilate manually.
Monitoring is still available.
Check/Replace:
• Flow Valve
• Flow Valve harness
• PEB/VEB
• Cable to CB/J14
• Control Board.
Heliox Mode is On User Alarm Control setting on ventilation
setup menu.
When Heliox is used, the
ventilator must adjust volume
calculations.
High O2 User Alarm O2% > alarm high limit
setting.
Is the limit set correctly?
What is the O2 flow?
Did you just push Flush?
Does the sensor see 21% O2 in
room air?
Calibrate O2 sensor.
Replace O2 sensor.
High Paw User Alarm Paw is greater than Plimit.
The ventilator cycles to
expiration.
Are Plimit and other controls set
correctly?
Look for blockages.
Check patient connection.
High ◊E User Alarm The minute volume is greater
than the set high limit.
This alarm is suspended
for 9 breaths after you
change the ventilator
settings.
Check patient for spontaneous
breathing.
Adjust control settings.
High VTE User Alarm VTE is greater than high alarm
limit. This alarm is
suspended for 9 breaths
after you change the
ventilator settings.
Check patient for spontaneous
breathing.
Check ventilator and alarm
settings.
Insp Flow Sensor Fail User Alarm The system cannot read the
calibration data stored in
the sensor.
Operation continues with
reduced accuracy.
Replace the flow sensor.
Message Alarm/Error Cause User Action/Concerns Service Repair
7100 Anesthesia Ventilator
5-8 02/03 1006-0836-000
Insp Reverse Flow User Alarm Flow through the inspiratory
sensor during expiration
(for 6 breaths in a row).
Look at the check valves.
Water build up in the flow sensor
tubes?
Is a flow sensor tube cracked or
broken?
Replace the inspiratory check
valve.
Check the flow sensor condition.
Inspiration Stopped
w
User Alarm Drive gas safety switch
activated (high pressure).
Adjust controls.
Check systems for blockages.
If persists, check:
• Bellows pop-off
• Exhalation valve
Internal Ventilator
Clock Too Fast
Error
,Minimum
Shutdown
Ventilator malfunction. Ventilate manually.
Monitoring is not reliable.
Replace:
• Control Board.
Internal Ventilator
Clock Too Slow
Error
Minimum
Shutdown
Ventilator malfunction. Ventilate manually.
Monitoring is not reliable.
Replace:
• Control Board.
Invalid
Circuit Module
User Alarm The system does not
recognize the type of
circuit module installed.
Normally the system uses
the ID tabs to identify
circuits.
Make sure the module is
correctly installed.
Look for broken ID tabs or tape
on the tabs.
If persists, check:
• Circuit
Identification
Board
• Harness to MIA/
VMB
• MIA/VMB
• Cable to CB/J12
Low Battery Voltage User Alarm Voltage is <5.65V while
using battery power.
Manually ventilate the patient to
save power.
Is the mains indicator light on?
Make sure power is connected
and circuit breakers are
closed.
Check the ventilator fuse.
Low Drive Gas Press User Alarm The ventilator does not
detect supply pressure.
Manually ventilate the patient.
Make sure that the appropriate
gas supplies (O2 or Air) are
connected and pressurized.
Low O2 User Alarm O2% less than alarm low
limit setting.
Is the limit set correctly?
Is the O2 flow sufficient?
Does the sensor see 21% O2 in
room air?
Calibrate O2 sensor.
Replace O2 sensor.
As sensors wear out, the
measured % O2 decreases.
Message Alarm/Error Cause User Action/Concerns Service Repair
5 Troubleshooting
1006-0836-000 02/03 5-9
Low Paw User Alarm Paw does not rise at least
4 cm above Pmin during
the last 20 sec.
Are circuit connections OK?
Look at the Paw gauge on the
absorber.
Look for circuit disconnection.
Low ◊E User Alarm Exhaled minute volume
less than low limit alarm
setting. This alarm is
suspended for 9 breaths
after you change the
ventilator settings.
Check patient condition.
Check tubing connections.
Check alarm settings.
Low VTE User Alarm Exhaled tidal volume
less than low limit alarm
setting. This alarm is
suspended for 9 breaths
after you change the
ventilator settings.
Check patient condition.
Check tubing connections.
Check alarm settings.
Memory (EEPROM)
Fail
User Alarm The system cannot access
some stored values.
Default settings are used.
Ventilation is still possible but
service is necessary.
Replace:
• Control Board.
Memory (Flash)
Failure
Error
Minimum
Shutdown
Ventilator malfunction. Ventilate manually.
Monitoring is not reliable.
Replace:
• Control Board.
Memory (RAM)
Failure
Error
Minimum
Shutdown
Ventilator malfunction. Ventilate manually.
Monitoring is not reliable.
Replace:
• Control Board.
Memory (Redundant
Storage) Failure
Error
Minimum
Shutdown
Ventilator malfunction. Ventilate manually.
Monitoring is still available.
Replace:
• Control Board.
Memory (Video)
Failure
Error
Minimum
Shutdown
Ventilator malfunction. Ventilate manually.
Monitoring is not reliable.
Replace:
• Control Board.
Monitoring Only User Alarm A severe malfunction
prevents mechanical
ventilation.
Other alarms may also
occur.
Ventilate manually. Cycle system
power (On- Standby-On).
If the alarm clears, restart
mechanical ventilation.
Replace:
• Control Board.
No Circuit Module User Alarm The patient circuit module is
not installed
(Aestiva only).
Install a module.
Optical sensors look for tabs on
the back of the module.
Is the module assembled?
Are sensors dirty?
If persists, check:
• Circuit
Identification
Board
• Harness to MIA/
VMB
• MIA/VMB
• Cable to CB/J12
Message Alarm/Error Cause User Action/Concerns Service Repair
7100 Anesthesia Ventilator
5-10 02/03 1006-0836-000
No CO2 Absorption User Alarm CO2 bypass selected
(Aestiva only).
User setting.
Close the canister release to
remove CO2 from exhaled gas.
No Exp Flow Sensor User Alarm Electrical signals show the
flow sensor is not
connected.
Connect the flow sensors.
Make sure the flow sensor
module is on all the way.
No Insp Flow Sensor User Alarm Electrical signals show the
flow sensor is not
connected.
Connect the flow sensors.
Make sure the flow sensor
module is on all the way.
No O2 Pressure User Alarm The O2 supply has failed. Air flow will continue. Ventilate
manually if necessary.
Connect a pipeline supply or
install an O2 cylinder.
O2 Flush Failure User Alarm The pressure switch that
detects flush flow has
seen a very long flush
(≥30 sec).
This alarm occurs if you hold
down the Flush button for
more than 30 seconds.
If persists, check:
• O2 flush switch
• Cable to SAB/SICB
• SAB/SICB
• Cable to CB/J11
O2 Sensor Out of Circ User Alarm O2 sensor not installed in
breathing circuit module.
Sensor not measuring gas in
breathing circuit.
Install a breathing circuit module
and an O2 sensor.
O2 Mon Disabled User Alarm An Oxygen cell has been
connected to a non-
active ventilator
monitoring feature.
The Oxygen Monitoring feature is
not active on this system.
Service Mode:
• System
Configurations
On Battery -
Power OK?
User Alarm The mains supply is not
connected or has failed
and the system is using
battery power.
Ventilate manually to save
power.
At full charge, the battery
permits approximately
30 minutes of mechanical
ventilation.
Make sure power is connected
and circuit breakers are
closed. Check the ventilator
fuse.
Patient Circuit Leak? User Alarm Exhaled volume <50% of
inspired volume for at
least 30 seconds
(mechanical ventilation).
Check breathing circuit and flow
sensor connections.
Patient circuit leak audio can be
turned off in the Alarm
Settings menu.
Message Alarm/Error Cause User Action/Concerns Service Repair
5 Troubleshooting
1006-0836-000 02/03 5-11
Paw < -10 cm H2O User Alarm Subatmospheric pressure
(<-10 cm H2O).
Check patient condition,
spontaneous activity?
Increase fresh gas flow. Look
for high flow through gas
scavenging.
Calibrate the flow sensors. With
active scavenging, check the
negative relief valve on the
receiver.
PEEP Valve (DAC)
Failure
Error
Minimum
Monitoring
Indicates a failure of the
control circuit for the
PEEP Valve.
Ventilate manually. Replace:
• Control Board.
PEEP Valve (Voltage)
Failure
Error
Minimum
Monitoring
Indicates a problem with the
PEEP Valve or the
connections to the PEEP
Valve.
Ventilate manually. Check/Replace:
• PEEP Valve
• PEEP Valve
harness
• PEB/VEB
• Cable to CB/J14
• Control Board.
PEEP Safety Valve
(Drive) Failure
Error
Minimum
Monitoring
Indicates a higher than
allowed current draw on
the PEEP Safety Valve.
Ventilate manually. Check/Replace:
• PEEP Safety Valve
• PEEP Safety Valve
harness
• PEB/VEB
• Cable to CB/J14
• Control Board.
PEEP Safety Valve
Failure
Error
Minimum
Monitoring
Indicates that the powerup
test of the PEEP Safety
Valve failed.
Ventilate manually. Check/Replace:
• PEEP Safety Valve
• PEEP Safety Valve
harness
• PEB/VEB
• Cable to CB/J14
• Control Board.
Pinsp Not Achieved User Alarm Indicates a problem with
breathing circuit
connections or that the
ventilator is unable to
deliver requested
pressure to the patient.
Check breathing circuit
connections. Check settings.
Pressure Monitoring
Channel Failure
Error
Minimum
Monitoring
Indicates a problem with
patient airway
overpressure monitor.
Ventilate manually. Check/Replace:
• PEB/VEB
• Cable to CB/J14
• Control Board.
Message Alarm/Error Cause User Action/Concerns Service Repair
7100 Anesthesia Ventilator
5-12 02/03 1006-0836-000
Pres/Vol Mon
Inactive
User Alarm ACGO is set to auxiliary gas
outlet.
Connect the patient circuit to the
auxiliary gas outlet or set the
switch to the common gas
outlet for normal operation.
Replace O2 Sensor User Alarm O2% < 5% Make sure patient receives O2.
Does the sensor see 21% O2 in
room air?
Use different monitor.
Calibrate O2 sensor.
Replace O2 sensor.
If persists, check:
• O2 sensor cable
• MIA/VMB
• Cable to CB/J12
• Control board
Service Calibration
w
User Alarm Internal calibrations are
necessary for
,maximum
accuracy.
The system is operational. Service Mode:
• Calibrations
Select Gas Outlet User Alarm Fresh gas may not flow to the
patient.
ACGO is On, but flow sensors
have seen 3 breaths in
patient circuit during the
last 30 seconds.
Select the common gas outlet or
connect the patient circuit to
the ACGO.
Note: The bag arm will not
ventilate a patient at the
auxiliary outlet.
Software Error Error
Minimum
Shutdown
Indicates that a software
error has occurred.
Ventilate manually.
Monitoring is not reliable.
Replace:
• Software
• Control Board.
Software Watchdog
Failure
Error
Minimum
Shutdown
Ventilator malfunction. Ventilate manually.
Monitoring is not reliable.
Replace:
• Control Board.
Sustained Airway
Pressure
Error
Minimum
Shutdown
Paw > 100 cm H2O for
10 sec.
Check tubing for kinks,
blockages, disconnects.
Calibrate the flow sensors.
If persists, check:
• Bellows pop-off
• Exhalation valve
Sustained Paw User Alarm Paw is greater than
sustained pressure limit
for 15 seconds.
Check tubing for kinks,
blockages, disconnects.
Calibrate the flow sensors.
System
Configuration
(EEPROM)
Memory Failure
Error
Minimum
Shutdown
System configuration
information is bad in the
EEPROM Memory.
Ventilate manually.
Monitoring is not reliable.
Replace:
• Control Board.
Message Alarm/Error Cause User Action/Concerns Service Repair
5 Troubleshooting
1006-0836-000 02/03 5-13
System Leak? User Alarm Leak detected between
ventilator and patient
circuit.
If you are using Heliox, select
Heliox on the ventilator setup
menu. Look for leaks in the
absorber system.
Problem with flow sensors?
Calibrate the flow sensors.
Drain water buildup from the
breathing system and inspect
for leaks (repair).
Inspect or replace flow sensors.
The primary cause for
this message is
that the bellows
has emptied.
Refill the bellows.
This message
combines the
“Unable to Drive
Bellows” and
“System Leak?”
messages in the
Aestiva 7900
Ventilator.
Perform the
Breathing System
Leak Tests.
Vext_ref
Out-of-Range
Error
Minimum
Shutdown
Ventilator malfunction. Ventilate manually.
Monitoring is not reliable.
Replace:
• Control Board.
VBUS Fail
Out-of-Range
Error
Minimum
Shutdown
Ventilator malfunction. Ventilate manually.
Monitoring is not reliable.
Replace:
• Control Board.
Ventilate Manually User Alarm A severe malfunction
prevents mechanical
ventilation and
monitoring.
Other alarms may also
occur.
Ventilate manually.
Use a stand-alone monitor.
Cycle system power (On-
Standby-On).
If the alarm clears, restart
mechanical ventilation.
Replace:
• Control Board.
Verify Low ◊E Limit User Alarm The audible circuit leak
alarm is off (Alarm
Settings menu) but the
low ◊E alarm is not
consistent with the
ventilator settings.
Set the low ◊E alarm.
Volume Apnea User Alarm No mechanical breaths or
spontaneous breaths
> 5 mL in last 30
seconds.
Check patient.
Bag as needed.
Check for disconnects.
If the patient is on a heart lung
machine, select Cardiac
Bypass on the alarm menu.
Vol Apnea > 2 min User Alarm No mechanical breaths or
spontaneous breaths
>5 mL in last 120
seconds.
Check patient.
Bag as needed.
Check for disconnects.
If the patient is on a heart lung
machine, select Cardiac
Bypass on the alarm menu.
Message Alarm/Error Cause User Action/Concerns Service Repair
7100 Anesthesia Ventilator
5-14 02/03 1006-0836-000
Volume Mon
Disabled
User Alarm A flow sensor has been
connected to a non-
active ventilator
monitoring feature.
The Volume Monitoring feature is
not active on this system.
Service Mode:
• System
Configurations
VT Comp Avail User Alarm A condition which prevented
VT Compensation
ventilation mode has
cleared.
None. Indicates a return to
normal operation. Select
Volume Mode or Pressure
Mode (if available).
VT Comp Off User Alarm The system supplies the set
breath but cannot adjust
ventilation for
compliance and
resistance losses, etc.
Adjust VT manually and continue
without compensation, or
change to the pressure mode.
In pressure mode set Pinspir.
Replace the flow sensor module
and select the mode again.
If the problem stops, inspect the
two flow sensors.
VT Comp Disabled User Alarm A flow sensor has been
connected to a non-
active ventilator
monitoring feature.
The Volume Compensated
Delivery feature is not active
on this system.
Service Mode:
• System
Configurations
VT Not
Achieved
User Alarm Tidal volume measured by
inspiratory flow sensor
is less than set value 6
breaths in a row after the
first minute of
mechanical ventilation.
Adjust controls to supply
adequate tidal volumes.
Check I:E; Plimit; and volume
settings.
Possible leak.
VTE > Insp VT User Alarm Expired volume is greater
than inspired volume for
6 breaths with a circle
module.
Check patient condition.
Are the flow sensors correctly
installed?
Water build up in the flow sensor
tubes?
Is a flow sensor tube cracked or
broken?
Improper check valve operation?
Inspect one-way valves
(breathing circuit module.)
Replace flow sensor module with
the spare.
Check the condition of the flow
sensor and its tubing.
VT Delivery Too High User Alarm VT > 20% of set value for
six consecutive breaths.
Reduce fresh gas flow.
Message Alarm/Error Cause User Action/Concerns Service Repair
5 Troubleshooting
1006-0836-000 02/03 5-15
5.4 Troubleshooting Flowcharts
5.4.1 Ventilator
assessment process
* Refer to Section 7.2, “Breathing System Leak Tests,” in the respective anesthesia machine Technical Reference Manual.
Start
Turn on System
Review Active Alarms,
Error Log and Alarm Log
No
Proceed
to “No Display”
Troubleshooting
Section 5.4.2
No
Use Alarm
Troubleshooting
Section 5.3
Proceed to
“Breathing System Leak”
Troubleshooting
Yes
No
Yes
Is display
on?
Are
there
alarms?Diagnosis
Achieved?
Done
Alarms of Type:
Patient Circuit Leak
System Leak
Bellows Falls or
Leak detected
ALARMS SYMPTOMS
Yes
Yes
No
Proceed to
“Inaccurate Volume
Ventilation”
Troubleshooting
Section 5.4.3
Yes
Alarms of Type:
Vt Compensation Off
Delivered Volume Mismatch
Check Flow Sensors
Insp Reverse Flow
Exp Reverse Flow
System Leak
Inaccurate VentilationYes
No
Proceed to
“No Ventilation”
Troubleshooting
Section 5.4.4
Yes
Alarms of Type:
Low Paw
Volume Apnea
Low Drive Gas
Pressure System
Leak
Will not
ventilate
Yes
No
Proceed to
“High Intrinsic PEEP”
Troubleshooting
Section 5.4.5
YesAlarms of Type:
Sustained Paw
High Paw
Continuously high PEEP
during operation
Yes
No
No
No
Yes
*
AB
.4
3.
10
7100 Anesthesia Ventilator
5-16 02/03 1006-0836-000
5.4.2 No display
troubleshooting
Start - Turn on System
Is Display Dim
but information
can be seen?
Problem
Continues?
Yes
Yes
Check Contrast
Adjustment User
Menu
Check Contrast
Adjustment
Service Menu
Power Down and
check attachment
of cable from CPU
to backlight
Is LCD
Backlight lit
at all?
Replace Backlight
Replace CPU
PCB
No
Power Down and
check attachment
of data cable from
Display to CPU
Replace Display
Problem
Continues?
Was there
single audio
tone on
power-up?
Is there a
continuous or
cycling audio
tone?
Replace CPU
PCB
No
Yes
No
No
Is AC LED
Power light
On?
Remove Serial Board Cable and
perform continuity check on
System On/Off switch lines
No
Yes
Replace CPU
PCB
Problem
Continues?
Disconnect Power Supply to
CPU Cable and determine if both 9v
and 6v power is present.
9v and 6v
present?
Replace Power
SupplyNo
Yes
Check Display
Cable to CPU
Connections
Replace Display
Yes
Replace CPU
PCB
Problem
Continues?
Problem
Continues?
Check AC
Power Cable
Check Inlet
Module Fuses
Check System
Circuit Breaker
Problem
Continues?
Problem
Continues?
Problem
Continues?
AB
.4
3.
10
1
5 Troubleshooting
1006-0836-000 02/03 5-17
5.4.3 Inaccurate volume
ventilation troubleshooting
* Water in harness is indicative of a
,leak in the tubing, connectors, or MIA/VMB pressure transducer.
Be sure to leak check if it is determined that water is present within the harness.
AB
.4
3.
14
7
Correct kinks or
leaks, replace
harness if
necessary.
*
Start
Zero Flow Sensor
Transducers and
Replace both
flow sensors
(whole cartridge)
Perform a
Pressure
Sensitivity
Calibration
Do Bit Counts on either
channel vary by more
than 10 from the initial
zero count? Inspect for leaks
or water in
pneumatic lines
between flow sensor
and MIA/VMB.
Problem
Continues?
Yes
No
Sensor Problem:
Examine for defect or water
plug in lines. Ensure
customer is periodically
emptying integrated circle
module water trap
Water, leaks
or kinks?
Yes
Switch insp. and exp.
pneumatic connections
and repeat Pressure
Sensitivity Cal
Yes No
Problem
moves to
other sensor
channel?
Replace
Harness
Yes
No
Inspect Breathing
Circuit check
valves: replace
seat and disk as
necessary
No
Problem
Continues?
No
Pressure Sensitivity
Cal Error:
Yes
Problem
Continues?
Yes
Check Valve Problem:
MIA/VMB Board Evaluation
No
Problem with
MIA/VMB indicated?
Yes
Replace
MIA/VMB
Replace
Harness
Perform
Calibrations and
Re-evaluate
Perform
Calibrations and
Re-evaluate
No
Refer to Section 5.4.4.A, "MIA board evaluation (Aestiva machine)."
or
Refer to Section 5.4.5.B, "VMB board evaluation (Aespire machine)."
7100 Anesthesia Ventilator
5-18 02/03 1006-0836-000
5.4.4.A MIA board
evaluation
(Aestiva machine)
1. Remove the Bellows Assy and Breathing Circuit subfloor to access the MIA
pneumatic circuit connections.
2. Enter the Valves-Test Tool service page and record the bit counts on the
inspiratory and expiratory flow transducers.
3. Connect the calibration orifice test tool (A) to the drive gas port (not the
pilot pressure port used for PEEP calibration).
4. Install the flow sensor module only (no circuit module).
5. Connect a 22-mm hose from the calibration orifice test tool to the
inspiratory flow port (B).
6. Set the inspiratory flow valve to 60 L/min. Gas will exhaust out the rear of
the inspiratory flow sensor where it is normally connected to the circuit
module (reverse flow through the inspiratory flow sensor).
7. Record the change in bit counts observed on the inspiratory flow
transducer channel as compared to step 2 (negative polarity). There may
be some variation in the last digit of the counts, try to pick the average
value.
8. Stop the inspiratory flow.
Refer to Figure 9-7 •
9. Swap the inspiratory channel pneumatic connections (white to black,
black to white)
10. Repeat steps 6 through 8.
11. Move the two inspiratory connections to the expiratory channel of the MIA
(white from harness to blue of MIA pressure transducer, black from
harness to yellow of MIA pressure transducer).
12. Repeat steps 6 through 8 using counts from the expiratory flow transducer
channel.
13. Swap the two inspiratory connections to the expiratory channel of the MIA
(white from harness to yellow of MIA pressure transducer, black from
harness to blue of MIA pressure transducer).
14. Repeat steps 6 through 8 using counts from the expiratory flow transducer
channel.
15. Variation of greater than 40 bits in any of the four measured count
changes indicates a problem with the MIA function.
16. Return to Section 5.4.3.
A
B
5 Troubleshooting
1006-0836-000 02/03 5-19
5.4.5.B VMB board
evaluation
(Aespire machine)
1. Remove the tabletop to access the VMB pneumatic circuit connections.
2. Remove the ABS and the exhalation valve.
3. Enter the Valves-Test Tool service page and record the bit counts on the
inspiratory and expiratory flow transducers.
4. Connect the calibration orifice test tool (A) to the drive gas port (not the
pilot pressure port used for PEEP calibration).
5. Separate the Bellows Module from the Circuit Module.
6. Remove the Flow Sensor Module from the ABS and install it on the
machine .
7. Install the Circuit/Flow Sensor Module.
8. Connect a 22-mm hose from the calibration orifice test tool to the
inspiratory flow port (B).
9. Set the inspiratory flow valve to 60 L/min. Gas will exhaust out the rear of
the inspiratory flow sensor where it is normally connected to the circuit
module (reverse flow through the inspiratory flow sensor).
10. Record the change in bit counts observed on the inspiratory flow
transducer channel as compared to step 2 (negative polarity). There may
be some variation in the last digit of the counts, try to pick the average
value.
11. Stop the inspiratory flow.
Refer to Figure 9-9 •
12. Swap the inspiratory channel pneumatic connections (white to black,
black to white)
13. Repeat steps 9 through 11.
14. Move the two inspiratory connections to the expiratory channel of the VMB
(white from harness to blue of VMB pressure transducer, black from
harness to yellow of VMB pressure transducer).
15. Repeat steps 9 through 11 using counts from the expiratory flow
transducer channel.
16. Swap the two inspiratory connections to the expiratory channel of the VMB
(white from harness to yellow of VMB pressure transducer, black from
harness to blue of VMB pressure transducer).
17. Repeat steps 9 through 11 using counts from the expiratory flow
transducer channel.
18. Variation of greater than 40 bits in any of the four measured count
changes indicates a problem with the VMB function.
19. Return to Section 5.4.3.
A
B
7100 Anesthesia Ventilator
5-20 02/03 1006-0836-000
5.4.6 No ventilation
troubleshooting
* Refer to Section 7.2, “Breathing System Leak Tests,” in the respective anesthesia machine Technical Reference Manual.
Yes
No
Yes
Start
Zero Flow and
airway pressure
transducers
Verify pass?
High flow Gas
exhausts from
drive gas port?
No
1. Remove bellows assembly
2. Enter Valves - Test Tool
3. Turn on the flow valve to 15 L/min
4. Check regulator calibration
Yes
Correct Hospital
Supply Problem
Perform airway pressure
transducer calibration or
proceed to Inaccurate
Ventilation Troubleshooting
Section 5.4.3
Yes
No
1. Turn off the flow valve
2. Turn on the PEEP Safety Valve
3. Set the PEEP valve to 100 cm H2O
4. Using hand, occlude bleed resistor
on bottom of vent engine
Gas exhausts from
PEEP control port?
Regulator
pressure OK
at 25 psi?
Set Flow valve
to 70 L/min
Check hospital
pressure supply
Hospital supply
pressure OK at
35-100 psi?
Replace Regulator
and perform all
valve calibrations
Yes
No
Inspiratory Flow Valve Problem
1. Check electrical connections
2. Attempt inspiratory flow valve
calibration
3. Replace inspiratory valve if
necessary and recalibrate
Setup for PEEP Valve
Calibration but use the
Valve test tool menu:
With Peep valve set to
100 cm H2O
Yes
Pressure
90-110 cm H2O?
1. Examine Exhalation
Valve and exhalation
valve diaphragm and
reassemble breathing
circuit
2. Reduce PEEP setting
to 70 cm H2O
3. Place a plug in the
drive port of the
Bellows Assy. The
bellows can be left off
4. Occlude inspiratory
port and press flush
button
Yes
Does Circuit
Pressurize?
Does Bellows
Move?
No
Check all valve calibrations.
If OK, go to Breathing System
Leak Troubleshooting if bellows
does not refill
Proceed to Breathing
Circuit Leak
Troubleshooting
No
1. Close PEEP Safety Valve and
Remove PEEP Valve from the
Vent Manifold
2. Turn on PEEP Safety Valve
Does flow come from
vent engine plate?
PEEP Safety Valve Problem
1. Check electrical supply
and connections
2. Replace if necessary
No
PEEP Control Valve Problem
1. Check electrical supply
and connections
2. Attempt Recalibration
3. Replace if necessary
No
Yes No
Check function of
the drive pressure
pop-off valve
Yes
No
Yes
Problem solved?
If not replace filter
Yes
*
*
AB
.4
3.
10
3
5 Troubleshooting
1006-0836-000 02/03 5-21
5.4.7 High intrinsic
PEEP
troubleshooting
Start
Zero Flow and
airway pressure
transducers
Verify pass?
No
Pressure Transducer Problem
1. Perform
,2.5.4 Exhalation (PEEP) Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
2.5.5 Bleed Resistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
2.5.6 Bellows Pressure Relief Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
2.5.7 Mechanical Overpressure Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
2.5.8 Free Breathing Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
2.5.9 Breathing Circuit Flow Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
3 Post-Service Checkout
3.1 Post-service checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
3.1.1 Test the 7100 ventilator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
3.1.2 Test the anesthesia machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
4 Tests and Calibration
4.1 Self tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
4.2 Service Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
4.3 About Ventilator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
4.4 Alarm Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
4.5 Error Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
4.6 Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7
4.7 User Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-8
4.7.1 Screen Contrast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-8
4.8 System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-9
4.9 Calibrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
4.9.1 O2 Calibrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
4.9.2 Zero Flow and Airway Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
4.9.3 Adjust Drive Gas Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
4.9.4 Airway Sensor Span . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
4.9.5 PEEP Valve Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
4.9.6 Inspiratory Valve Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
4.9.7 Pressure Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
4.9.8 Service Calibrations Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
Table of Contents
1009-0836-000 02/03 v
4.10 Diagnostic Tests/Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23
4.10.1 Display A/D Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24
4.10.2 Display Discrete I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26
4.10.3 Display Battery Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-27
4.10.4 Test Panel Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28
4.10.5 Valves - Test Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-29
4.10.6 Test CPU and Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30
4.10.7 Test EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31
4.10.8 Test Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-32
4.10.9 Test 5V Fail Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33
4.10.10 Test Inspiratory Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34
4.10.11 Test PEEP Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-35
4.10.12 Test PEEP Safety Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36
4.10.13 Breathing System Leak Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-37
4.10.14 Test Pressure Limit Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-38
4.11 Upgrade Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-40
5 Troubleshooting
5.1 Troubleshooting instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
5.2 Troubleshooting guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
5.3 Alarm and Error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4
5.4 Troubleshooting Flowcharts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
5.4.1 Ventilator assessment process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
5.4.2 No display troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
5.4.3 Inaccurate volume ventilation troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17
5.4.5.B VMB board evaluation (Aespire machine) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
5.4.6 No ventilation troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20
5.4.7 High intrinsic PEEP troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21
6 Maintenance
6.1 Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
6.2 Free breathing valve maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3
6.3 MOPV pressure relief valve test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4
6.3.1 Test setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4
6.3.2 Test procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4
7100 Anesthesia Ventilator
vi 02/03 1009-0836-000
7 Repair Procedures
7.1 Software Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2
7.1.1 After replacing the Control Board or the Control Module
,airway pressure
transducer calibration
2. Check pneumatic lines
Yes
Flow from bleed
orifice with BTV
switch in bag
position?
Problem
continues?
Transducer was
out of calibration
Scavenging Problem
or Breathing Circuit Obstruction
1. Check hospital’s scavenging
hoses and supply vacuum (active)
2. Check filter on active systems
3. Check for obstruction in breathing
circuit down tube or Y manifold
4. Check breathing circuit for
incorrect assy or obstructions
Instrinsic PEEP
in both Bag and
Vent Modes?
No
Yes
No
Yes
No
Intrinsic
PEEP
in Vent
Mode?
Exhalation/Pop-off Valve Problem
1. Check bellows pop-off valve for
accurate assy or sticking
2. Check exhalation valve for accurate
assy or sticking diaphragm
3. Check for obstructions in bellows
base upstream of exhalation valve
4. Check for obstruction downstream
of exhalation valve in connecting
tube or Y manifold
Yes
APL Valve Problem
1. Check APL Valve mechanism
for proper function
2. Check APL disk for sticking
3. Check for obstructions in
main manifold downstream
of APL or in Y manifold
Verify
Regulator
calibration
Yes
No
Problem
continues?
No
Regulator was out
of calibration
PEEP Control Valve Problem
1. Verify Calibration
2. Replace PEEP Control Valve if necessary.
3. Inspect Vent Engine and manifold for
evidence of debris or water
4. Verify proper operation of PEEP safety
valve
Yes
AB
.4
3.
10
4
Notes
5-22 02/03 1006-0836-000
1006-0836-000 02/03 6-1
6 Maintenance
In this section • The “Maintenance Schedule,” Section 6.1, applies to the entire anesthesia
machine.
• The remaining sections, Sections 6.2 and 6.3, detail select maintenance
procedures that apply only to the 7100 Ventilator.
6.1 Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
6.2 Free breathing valve maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3
6.3 MOPV pressure relief valve test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4
6.3.1 Test setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4
6.3.2 Test procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4
7100 Anesthesia Ventilator
6-2 02/03 1006-0836-000
wwww WARNING Do not perform testing or maintenance on this instrument while it is
being used to ventilate a patient. Possible injury can result.
wwww WARNING Items can be contaminated due to infectious patients. Wear sterile
rubber gloves. Contamination can spread to you and others.
wwww WARNING Obey infection control and safety procedures. Used equipment may
contain blood and body fluids.
6.1 Maintenance Schedule
The 7100 Ventilator is an integral component of the Aestiva/5 7100
anesthesia machine and the S/5 Aespire anesthesia machine.
Refer to Section 5, “Maintenance,” in the respective anesthesia machine
Technical Reference manual for the “Planned Maintenance Schedule.”
6 Maintenance
1006-0836-000 02/03 6-3
6.2 Free breathing valve maintenance
Figure 6-1 • Free breathing valve
Refer to Section 7.3 to access the Pneumatic Vent Engine.
1. Unscrew the valve seat (A) from the side of the interface manifold.
2. Inspect the flapper (B) and valve seat for nicks, debris and cleanliness.
To replace the flapper valve 3. If necessary, clean the new flapper valve with alcohol.
4. Pull the tail (C) of the new free breathing valve flapper through the center
of the valve seat until it locks in place.
5. Trim the tail flush with outside surface of the valve seat (refer to the
removed flapper).
6. Replace the O-ring (D). Lubricate with a thin film of Krytox.
7. Hand screw the assembly into the interface manifold.
8. Reassemble the system.
9. Perform the Preoperative Checkout Procedure
(refer to the respective User’s Reference manual).
A A
B
C D
7100 Anesthesia Ventilator
6-4 02/03 1006-0836-000
6.3 MOPV pressure relief valve test
w WARNING Objects in the breathing system can stop gas flow to the patient. This
can cause injury or death:
• Do not use a test plug that is small enough to fall into the breathing
system.
• Make sure that there are no test plugs or other objects caught in the
breathing system.
6.3.1 Test setup 1. Disassemble the breathing system to the point where you can remove the
exhalation valve (do not remove the exhalation valve on Aespire machine).
2. Plug the inspiratory flow (drive pressure) port with a stopper.
Figure 6-2 • Occluding the inspiratory flow port
6.3.2 Test procedure 1. Set the system switch to On and enter the Service Mode.
2. Select “Diagnostic Tests/Tools”; select “Valves - Test Tool”.
3. Select “Set Inspiratory Valve” and activate a flow of 10 L/min.
4. Carefully listen for the MOPV relief weight to be relieving and “popping off”
from its seat (a purring sound). This indicates the valve is functioning
correctly.
5. Set the system switch to Standby.
6. Remove the stopper from the inspiratory flow port.
7. Reassemble the system.
8. Perform the Preoperative Checkout Procedure
(refer to the respective User’s Reference manual).
Plug Inspiratory Flow (Drive Pressure) Port
Aestiva anesthesia machine Aespire anesthesia machine
1006-0836-000 02/03 7-1
7 Repair Procedures
In this section This section covers the repair and replacement procedures for the 7100 Ventilator and
its related components.
7.1 Software Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2
7.1.1 After replacing the Control Board or the Control Module . . . . . . . . . . . . . . . . . . . . .7-3
7.2 Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-4
7.2.1 Inside the control module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-5
7.2.2 Control board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-6
7.2.3 Battery and power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-7
7.2.4 Front enclosure with control board removed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-8
7.2.5 Front enclosure components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-9
7.3 Pneumatic engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11
7.3.1 Pneumatic Engine in an Aestiva machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11
7.3.2 Pneumatic Vent Engine in an Aespire machine . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12
7.3.3 Pneumatic engine components (Aespire machine) . . . . . . . . . . . . . . . . . . . . . . 7-13
7.3.4 Pneumatic engine components (Aestiva machine) . . . . . . . . . . . . . . . . . . . . . . 7-14
7.3.5 Supply gas inlet filter (Aestiva machine) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-15
7.3.6 Insp/PEEP interface assembly and reservoir . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16
7.3.7 Manifold and plate assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17
7.3.8 Pneumatic Engine Board and housing (Aestiva machine) . . . . . . . . . . . . . . . . 7-18
7.4 Monitoring Interface Assembly (MIA) in an Aestiva machine . . . . . . . . . . . . . . . . . . . . 7-19
7.5 Serial Adapter Board (SAB) and Power Cord/Harness . . . . . . . . . . . . . . . . . . . . . . . . . 7-20
wwww WARNING Post-Service Checkout is required after you complete this section. You must
perform Section 3, “Post-Service Checkout,” after
,performing any maintenance,
service, or repair. Failure to do so may result in patient injury.
wwww WARNING When servicing the ventilator, extreme care must be taken to avoid introducing
foreign debris, particularly metal chips generated by screw threads, into the
pneumatic flow passages of the ventilator. Failure to do so can result in damage
to the flow valve and possible injury to the patient.
7100 Anesthesia Ventilator
7-2 02/03 1006-0836-000
7.1 Software Installation
1. Set the system switch to Standby.
2. Insert the Software Memory Stick (A) with contacts facing forward into the
upgrade slot (B) of the Control Module.
3. Set the system switch to On.
4. Follow the instructions on the screen to complete the installation.
5. Set the system switch to Standby.
6. Remove the Software Memory Stick.
7. Perform the preoperative checkout procedure.
A
B
7 Repair Procedures
1006-0836-000 02/03 7-3
7.1.1 After replacing
the Control Board
or the Control Module
1. Load the appropriate software revision using a software memory stick that
matches the software revision of the replaced control board (control
module).
2. Enable/Disable the appropriate ventilator settings in the Service Mode,
System Configuration menu, Section 4.8, to match the replaced control
board.
3. Install new control board configuration label on back of control module
(with Control Board BID number and Feature KEY code). The replacement
control module has the label already attached.
143AB99
143AB99
Replacement Control Board
7100 Anesthesia Ventilator
7-4 02/03 1006-0836-000
7.2 Control Module
The control module is mounted on either a folding mount or on a repositionable
arm. In addition to the power cord, signals between the control module and the
machine mounted components are sent through three cables that pass
through the side of the machine (and through the arm if equipped) and
connect to the rear of the control module.
To replace the fuses
and the fan filter
• To replace the fuses (A), first remove the power cord retainer (B) and
the power cord (C).
• To replace the filter (D), remove the filter retainer (E). If the Control
Module is mounted on an arm, remove the control panel from the arm
to access the filter.
To remove the control module 1. Disconnect the three interface cables (F) and the power cord (CCCC).
2. Remove the screws that attach the control module to the mounting
brackets.
3. Remove the control module (CCCCMMMM).
4. Reassemble in reverse order.
5. Refer to Section 7.1 for installing software and updating the control board
configuration.
143AB99
(CM)
F
B
F FC
A
D
E
7 Repair Procedures
1006-0836-000 02/03 7-5
7.2.1 Inside the control
module
The control module consists of two enclosures: the rear enclosure (A) and the
front enclosure (B). To access components within each enclosure, separate
the two halves.
Opening the control module 1. Place the control module face down on a protected surface.
2. Loosen the screws (C) that hold the two enclosures together (one in each
corner).
3. Slightly separate the rear enclosure (A) from the front enclosure (B).
4. Swing the rear enclosure into an upright position. Lift up the edge that
houses the external connectors. Be careful not to stress the harnesses in
the back.
5. Disconnect the harnesses from the back of control board (CB) to separate
the two enclosures.
• Battery (D)
• Ground (E)
• Power supply (F)
• Fan (G)
wwww Caution When disassembling, remove the battery connector first. When
reassembling, attach the battery connector last. Power is supplied to the
control board as long as the battery is plugged in.
D
E
FG
(CB)
B
B
A
C
7100 Anesthesia Ventilator
7-6 02/03 1006-0836-000
7.2.2 Control board
wwww Caution The circuit boards are electrostatic sensitive. Use an anti-static
workstation and wear a wrist grounding strap when handling a circuit
board.
To replace the control board 1. Disconnect the remaining cables at the left edge of the control board (CB).
• (A) Two-wire harness to display backlight
• (B) Ribbon cable to LCD display
• (C) Ribbon cable to rotary encoder
• (D) Ribbon cable to front panel keyboard (refer to Note)
• (E) Two-wire harness to speaker
2. Remove the two screws (F) that hold the control board to the front
enclosure.
3. Carefully lift the control board from the front enclosure. Guide the cables
through the slotted openings at the left edge of the control board.
4. Reassemble in reverse order.
5. Refer to Section 7.1 for installing software and attaching the control board
configuration label.
Note The ribbon cable for the front panel keyboard inserts into a ZIF (zero insertion
force) connector on the control board.
To release the ribbon cable, insert a thin slotted screwdriver at the base of the
connector and twist it slightly to pry up on the outer shell of the connector.
To insert the ribbon cable, hold the outer shell in the released position.
Carefully insert the cable until all the “fingers” are below the surface of the
shell. Push the shell to the locked position.
A
B
C
D
E
(CB)
F
OT
.0
6.
02
3
7 Repair Procedures
1006-0836-000 02/03 7-7
7.2.3 Battery and
power supply
wwww Caution The circuit boards are electrostatic sensitive. Use an anti-static
workstation and wear a wrist grounding strap when handling a circuit
board.
To replace the Battery 1. Disconnect the battery cable (A) from the control board.
2. Note the orientation of the wires that connect to the battery and how they
route through the retaining clamp.
3. Remove the battery’s mounting strap (B)
4. Replace the battery in the same orientation noted above (wires facing
inward.
To replace the Power Supply 1. Disconnect the battery cable (A) from the control board.
2. Disconnect the power supply’s output connector (C).
3. Disconnect the power supply’s input connector and ground wire (D).
4. Loosen each mounting screw (four corners) until it begins to ratchet.
5. Lift out the power supply.
6. Reassemble in reverse order.
Ground Terminal Note the sequencing of ground wires and hardware when replacing any of the
harnesses.
Chassis
L
PI
PS
CB
L
L
N
N
PI - Ground lug from Power Inlet
PS - Ground lug from Power Supply
CB - Ground lug from Control Board
L - Lockwasher
N - Keps nut
A
B
CD
Note: After replacement, the
battery must be charged until
Battery Status is indicated as
“Battery Charged.”
Refer to Section 4.10.3.
7100 Anesthesia Ventilator
7-8 02/03 1006-0836-000
7.2.4 Front enclosure with
control board removed
To replace the speaker 1. Remove the two screws (A) that hold the speaker assembly (B) to the front
enclosure.
2. Reassemble in reverse order.
To remove the front enclosure 1. Use a 7-mm nut driver to remove the twelve nuts (C) around the periphery
that hold the front enclosure (D) and the front panel assembly (E) together.
2. Carefully lift the front enclosure from the front panel assembly. Guide the
cables through the slotted openings at the left edge of the front enclosure.
3. Reassemble in reverse order.
A
D
B
C
E
7 Repair Procedures
1006-0836-000 02/03 7-9
7.2.5 Front enclosure
components
The front enclosure components include:
• The keyboard assembly (A)
• The LCD display assembly (B)
• The rotary encoder switch (C)
To replace the keyboard The LCD display and the rotary encoder are mounted to the keyboard
assembly. To replace the keyboard assembly you must transfer the LCD display
and the rotary encoder to the new keyboard assembly.
To replace the rotary encoder 1. Pull the knob (D) off the shaft of the encoder.
2. Remove the nut and washer that hold the encoder to the keyboard.
3. Replace the encoder switch in reverse order. Note the orientation of the
attached ribbon cable.
To replace the LCD display 1. Use a 5.5-mm nut driver to remove the four nuts (E) at each corner of the
display.
2. Remove the
,display assembly from the keyboard.
3. If required, clean the keyboard window (if new, remove protective film).
4. Remove protective mask from new LCD display.
5. Transfer the spacers over the display mounting studs.
6. Mount the display to the keyboard studs.
7. Transfer the display ribbon cable (contacts facing up) to the new display
(ZIF connector; pull tabs toward cable to release).
B E
AB
.4
3.
07
5
CD
A
ZIF
7100 Anesthesia Ventilator
7-10 02/03 1006-0836-000
To replace the backlight
wwww Caution Do not touch the glass portion of the backlight. Body oils or other
contaminants can decrease the life of the backlight.
1. Remove the ribbon cable from the LCD display.
2. Remove the cover from the LCD display.
3. Carefully remove the backlight (A) from display assembly.
4. Guide the new backlight under the shielding flap (B) into the backlight
cavity.
5. Replace the cover.
6. Replace the ribbon cable
wwww
Do Not
Touch
A
A B
7 Repair Procedures
1006-0836-000 02/03 7-11
7.3 Pneumatic engine
Refer to section 6 for pneumatic engine components that are to be serviced
under regular maintenance. To service other components of the pneumatic
engine, you must first remove it from the housing.
7.3.1 Pneumatic Engine in
an Aestiva machine
In an Aestiva machine, the Pneumatic Engine is located in a housing at the rear
of the breathing system.
To remove the pneumatic
engine
1. Disconnect pipeline supplies; close cylinder valves; bleed off pressure.
2. Remove the rear cover of the breathing system.
3. Disconnect the drive gas hose (A).
4. Loosen the dual tube riser mounting screw (B) until 3 or 4 treads show out
of the riser block; pull down to lower the riser.
5. Remove the screws (C) that hold the engine manifold to the housing.
6. Slide the vent engine out of the housing just enough to access the harness
connections at the Pneumatic Engine Board (PEB)
• PEEP Valve, PEEP Safety Valve, and Supply Pressure Switch (D).
• Inspiratory Flow Valve (E).
7. Remove the vent engine from the housing.
8. Reassemble in reverse order.
A
B
C C
(PEB)
D
E
7100 Anesthesia Ventilator
7-12 02/03 1006-0836-000
7.3.2 Pneumatic Vent
Engine in an Aespire
machine
In an Aespire machine, the pneumatic Vent Engine is located in a housing
below the breathing system bellows.
To remove the pneumatic
engine
1. Disconnect pipeline supplies; close cylinder valves; bleed off pressure.
2. Remove the ABS breathing system.
3. Remove the Exhalation valve.
4. If present, remove the scavenging downtube.
5. Loosen the five captive screws (A) that hold the Vent Engine cover to the
housing. Raise the cover to access the Vent Engine.
6. Disconnect the Vent Engine harness (B).
7. Disconnect the white tube-coupler (C) — inline with tube to pressure
transducer on the Vent Engine Board.
8. If present, disconnect the black tube-coupler, inline with tube to
scavenging.
9. Disconnect the drive gas hose (D).
10. Loosen the three captive screws (E) that hold the engine manifold to the
housing.
11. Lift the Vent Engine out of the housing
12. Reassemble in reverse order.
A B
C
D
E
E
E
7 Repair Procedures
1006-0836-000 02/03 7-13
7.3.3 Pneumatic engine
components
(Aespire machine)
Regulator (A) Also inspect the two o-rings that seal it to the manifold. Replace as necessary.
PEEP Safety Valve (B) Ensure the valve you are installing (white dot) is in this location.
PEEP Valve (C) Ensure the valve you are installing (two blue dots) is in this location.
Supply Pressure Switch (D) Also inspect the o-ring that seal it to the manifold. Replace as necessary.
Transfer harness wire to top and middle tabs; bottom tab open.
Inspiratory Flow Valve (E) Note orientation of the flow valve. Also inspect the two o-rings that seal it to the
manifold. Replace as necessary.
Inlet Filter (F) Install the filter (with the course side DOWN) into the recess in the manifold.
Place the o-ring into its groove.
F
A B D
E
C
7100 Anesthesia Ventilator
7-14 02/03 1006-0836-000
7.3.4 Pneumatic engine
components
(Aestiva machine)
Regulator (A) Also inspect the two o-rings that seal it to the manifold. Replace as necessary.
PEEP Valve (B) Ensure the valve you are installing in this location is marked with two blue dots.
PEEP Safety Valve (C) Ensure the valve you are installing in this location is marked with a white dot.
Supply Pressure Switch (D) Also inspect the o-ring that seal it to the manifold. Replace as necessary.
Transfer harness wire to top and middle tabs; bottom tab open.
Inspiratory Flow Valve (E) Note orientation of the flow valve. Also inspect the two o-rings that seal it to the
manifold. Replace as necessary.
Inlet Filter (F) Refer to Section 7.3.2, “Supply gas inlet filter.”
Note The wire harnesses are tie-wrapped at this point to help keep the wires from
interfering with the MOPV weight. If you cut the tie wrap when replacing the
Inspiratory Valve or the PEEP Valve harness, be sure to tie-wrap the harnesses
at the same point to ensure proper operation of the MOPV.
E
F
A B C D
See Note
7 Repair Procedures
1006-0836-000 02/03 7-15
7.3.5 Supply gas inlet filter
(Aestiva machine)
Note You can replace the inlet filter without completely removing the pneumatic
engine. Before replacing the filter, be sure to observe the following:
• Disconnect pipeline supplies; close cylinder valves; bleed off
pressure.
• Remove the AGSS receiver.
1. Remove the filter retainer (A) at the bottom of the vent engine.
• Use a 3-mm hex wrench to loosen the retaining screw from the
manifold.
• Pull down on both screws to remove the filter retainer.
2. Pry the existing 2-micron filter (B) from the retainer.
3. Install the new filter.
• Place the filter screen on the retainer with the coarse side up.
• With your thumb at the center of the screen, press the filter into place.
Ensure that all of the filter is recessed below the outer rim.
4. Check the condition of the o-ring (C). Replace if cracked or torn.
5. Reinstall the filter retainer.
6. Replace the AGSS receiver.
B
A C
7100 Anesthesia Ventilator
7-16 02/03 1006-0836-000
7.3.6 Insp/PEEP interface
assembly and reservoir
The illustration shows the Pneumatic Engine for an Aestiva machine. These
components are (as are the other components) identical in the Vent Engine for
an Aespire machine; however, in an Aespire machine, the Vent Engine does not
include the dual-tube riser (A).
Insp/PEEP interface (B) Also inspect the two o-rings, not shown, that seal it to the manifold. Replace as
necessary.
If necessary, you can replace the free breathing valve components that are
part of the Insp/PEEP interface (refer to the Maintenance Section 6.2. “Free
breathing valve maintenance”):
• Free breathing valve flapper (C) and o-ring (D).
If necessary, clean flapper with alcohol before installing new; trim off
flush with outside surface of seat (refer to the removed flapper).
Reservoir (E) Also inspect the two o-rings, not shown:
• O-ring, reservoir to manifold
• O-ring, reservoir to screw head
C
D
E
B
A
7 Repair Procedures
1006-0836-000 02/03 7-17
7.3.7 Manifold and
plate assembly
Manifold plate gasket
(A)
1. Ensure that gasket is properly positioned.
2. Carefully install plate onto manifold making sure not to disturb the gasket.
3. Start all screws first.
4. Then, torque to 1.7 N-m (15 lb-in) using sequence shown.
b
a
d
c
e
A
Aestiva machine
b
a
d
c e
f
g
A
Aespire machine
7100 Anesthesia Ventilator
7-18 02/03 1006-0836-000
7.3.8 Pneumatic Engine
Board and housing
(Aestiva machine)
Note: In an Aespire machine, the Vent Engine Board is mounted directly to the
Vent Engine manifold. Refer to the Aespire machine Technical Reference
Manual for details.
To remove the Pneumatic Engine Board and housing in an Aestiva machine,
you must first remove the rear subfloor of the breathing system.
,Remove the
following:
• Flow sensors, patient circuit, bag arm, open control panel, bellows
assembly, main manifold, exhalation valve, and rear subfloor.
Pneumatic Engine Board (PEB) You can replace the PEB without removing the housing.
1. Disconnect tubing from pressure transducer (A).
2. Disconnect the control module cable (B) from the top of the PEB.
3. Loosen the PEB mounting screws (C) until you can slide the PEB down out
of the guides. Note, the mounting screws require a 3/32-inch hex wrench.
4. Reassemble in reverse order.
Pneumatic Engine Housing To replace the housing:
1. Disconnect tubing from pressure transducer (A).
2. Disconnect the control module cable (B) from the top of the PEB.
3. Pull the drive gas hose and the pressure transducer tubing into the rear
subfloor area.
4. Remove the components in the absorber canister area:
• the canisters, the upper and lower canister dish assembly, and the
down tube
5. Remove the four screws (D) that hold the housing to the lower chassis of
breathing system.
6. Reassemble in reverse order.
(PEB)
A
B
C
D
7 Repair Procedures
1006-0836-000 02/03 7-19
7.4 Monitoring Interface Assembly (MIA) in an Aestiva machine
Note: This section applies only to an Aestiva machine. For an Aespire machine, refer
to the Aespire machine Technical Reference Manual for details about the Ventilator
Monitoring Board.
The MIA is located in the breathing system, below the front and rear subfloors. It is held
in place by the bulkhead. If you are not familiar with this area, refer to the service manual
for the Aestiva anesthesia machine.
To replace the
Monitoring Interface
Assembly (MIA)
1. Remove the following items to gain access to the subfloor area:
• Flow sensors, breathing circuit, bag arm, open control panel, bellows
assembly, main manifold, and the exhalation valve.
2. Remove the front and rear subfloors.
3. Remove the bulkhead cover.
4. Disconnect the pressure gauge tubing; disconnect the control panel harness;
remove the control panel.
5. Disconnect the four inline tubing connectors (A) between the MIA and the bulkhead
connector.
6. Disconnect the cables at the rear of the MIA. Slide the cable retainer (B) on each
connector toward the outside of the breathing system (away from each other.
7. Remove the two bulkhead mounting screw from below the breathing system
chassis.
8. Raise the bulkhead to release the MIA. The MIA is secured with Velcro on the
bottom.
9. Move the MIA backwards for easier access to the front cable connectors.
10. Disconnect the cables at the front of the MIA.
• Cable from O2 sensor (release latch at bottom of connector).
• If present, cable from ACGO switch (release latch at top of connector)
11. Reassemble in reverse order.
wwww Caution Position each component carefully so that you do not pinch any of the tubing or
wiring.
B
B
MIAA
7100 Anesthesia Ventilator
7-20 02/03 1006-0836-000
7.5 Serial Adapter Board (SAB) and Power Cord/Harness
Note: This section applies only to an Aestiva machine. For an Aespire
machine, refer to the Aespire Technical Reference Manual for details about the
Serial Isolation and Connector Board.
The SAB is located in the electrical enclosure area behind the AC Inlet module.
The two cables that connect to the MIA are behind the rear panel in the
pneumatics area.
w WARNING Disconnect the power cord from the wall before attempting to remove or
repair any circuit board to avoid shock hazard.
w WARNING The AC inlet module is very heavy. Use caution when removing it from the
anesthesia enclosure.
wwww Caution The circuit boards are electrostatic sensitive. Use an anti-static
workstation and wear a wrist grounding strap when handling a circuit
board.
To gain access to
the Serial Adapter Board
1. Remove the AC inlet module from the rear of the Aestiva Anesthesia
Machine.
a. Loosen the two captive M4 screws.
b. Pulling on the two captive screws, cautiously slide the AC inlet mod-
ule out only halfway from the enclosure. Use the two side handles
(cutouts in the sheet metal) to lift out the AC inlet module from the en-
closure.
w WARNING The AC inlet module is very heavy. Use caution
when removing it from the anesthesia enclosure.
.
2. Remove the electronics compartment cover by removing the four Phillips
head screws (two along top edge, one along each side).
3. Remove the rear panel
(see Section 4.1.1 of the Aestiva Anesthesia Machine Service Manual).
Captive screws
Cutout handles
7 Repair Procedures
1006-0836-000 02/03 7-21
To replace
the Serial Adapter Board
1. Disconnect the two cables from the bottom of the SAB:
• Cable (A) from machine switches
(system switch, O2 flush, O2 supply).
• Cable (B) from control module.
2. Disconnect the serial output cable (C).
3. Remove the three screws (D) that hold the SAB to the back wall.
4. Remove the three nuts (E) that hold the SAB mounting bracket to the
enclosure.
5. Reassemble in reverse order.
A B
(SAB)
C
E
D
7100 Anesthesia Ventilator
7-22 02/03 1006-0836-000
To replace
the power cord/harness
1. Remove the top shroud (A) (refer to Aestiva Machine Service Manual).
2. Remove the harness connector (B) from mounting bracket.
3. Disconnect the ground wires (C).
4. Disconnect the wires from the Tec 6 outlet (D).
5. Disconnect the power cord from the control module (E).
6. For machines with Display Arm, disassemble arm to gain access to
routing for power cord
• Remove cover at end of arm.
• Remove top cover of arm.
• Remove front and back plates from shoulder.
• Loosen shoulder mounting screws enough to form gap at top large
enough to pass the power plug connector.
For machines with Folding Mount, remove the side panel.
7. Pull the power cord into the electrical enclosure.
8. Reassemble in reverse order.
9. Apply RTV where the cord enters the machine area from the top.
B
D
B
A
D
C
E
RTV
Folding
Mount
A R M
1006-0836-000 02/03 8-1
8 Illustrated Parts
In this section This section contains assembly illustrations for easier identification of parts as they are
disassembled. The 7100 Ventilator components are found in various locations of the
anesthesia machine as detailed in the respective Technical Reference manual.
8.1 Special instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-2
8.2 Service tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-2
8.3 7100 Ventilator parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-3
7100 Anesthesia Ventilator
8-2 02/03 1006-0836-000
8.1 Special instructions
Apply a thin coat of oxygen-use-approved lubricant to o-rings prior to
installation (unless otherwise noted). Use:
• Krytox GPL 205,
Datex-Ohmeda stock number 1001-3854-000
Some screws require an anti-loosening bond. Use:
• Loctite #24231, screw lock,
Datex-Ohmeda stock number 0220-5016-300
When you replace fittings, position the barb end in the same direction as the
original fitting to make hose connections easier.
8.2 Service tools
Item Tool Stock Number Reference
1 Software Memory Stick, SW Revision 1.3 1504-8130-000 Section 7.1
Software
Installation
2 PEEP/INSP Calibrated Flow Orifice
Note: The Calibrated Flow Orifice for the
Aespire has the same orifice size as the
Calibrated Flow Orifice for the Aestiva;
however, the Aestiva orifice has a larger
outside dimension that does not fit through
the Vent Engine cover plate. To use the
Aestiva orifice with and Aespire machine,
you must remove the cover plate to access
the manifold port. The Aespire orifice will
work for both the Aestiva machine and
the Aespire machine.
2a for Aestiva
2b for Aespire
1504-3005-000
1504-3016-000
Section 4.9.4
Airway Sensor Span
(and others).
3 Airway Pressure Sensing Tee 1504-3011-000
,Section 4.9.4
Airway Sensor Span
1
3
2a
CS
.0
7.
14
9
2b
CS
.0
7.
15
8 Illustrated Parts
1006-0836-000 02/03 8-3
8.3 7100 Ventilator parts
Description
Figure 8-1 Display Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 8-4
Figure 8-2 Display components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 8-5
Figure 8-3 Display, front cover assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 8-6
Figure 8-4 Display Keyboard and LCD assembly. . . . . . . . . . . . . . . . . . . . . Page 8-7
Figure 8-5 Pneumatic Engine, view 1 of 2 (Aestiva machine). . . . . . . . . . . Page 8-8
Figure 8-6 Pneumatic Engine, view 2 of 2 (Aestiva machine). . . . . . . . . . . Page 8-9
Figure 8-7 Pneumatic Vent Engine, view 1 of 2 (Aespire machine) Page 8-10
Figure 8-8 Pneumatic Vent Engine, view 2 of 2 (Aespire machine) Page 8-11
Figure 8-9 Manifold plate (Aestiva machine) . . . . . . . . . . . . . . . . . . . . . . . . Page 8-12
Figure 8-10 Manifold plate (Aespire machine). . . . . . . . . . . . . . . . . . . . . . . . Page 8-12
Figure 8-11 Mounting Bracket, pneumatic engine (Aestiva machine) . . . . . Page 8-13
Figure 8-12 Serial Adapter Board (Aestiva machine) . . . . . . . . . . . . . . . . . . Page 8-14
Figure 8-13 Subfloor components (Aestiva machine). . . . . . . . . . . . . . . . . . Page 8-15
7100 Anesthesia Ventilator
8-4 02/03 1006-0836-000
Figure 8-1 • Display Assembly (shown on Aestiva arm)
143AB99
1
5
3
4 62
8 7
9, 10
Item Description Stock Number
1* Control Module 1504-8500-000
2 Power Cord - Aestiva machine
Power Cord - Aespire machine
1504-5705-000
1009-5711-000
3 Retainer, power cord 1504-3503-000
4 Cable, pneumatic engine 1504-5605-000
5 Cable, serial adapter board - Aestiva machine
Cable, serial isolation and connector board - Aespire machine
1504-5606-000
1009-5691-000
6 Cable, monitoring interface assembly 1504-5604-000
7 Fuse, inline 2A time delay, T2L/250V, 5mm x 20mm 1503-3073-000
8 AC Inlet, double pole snap-in 1504-3515-000
9 Filter, fan 1504-3519-000
10 Retainer, fan filter 1504-3518-000
* Also order appropriate revision Software Memory Stick.
• Refer to Section 8.2 for Stock Number.
• Refer to Section 7.1.1 for instructions regarding a replaced Control Board or Control
Module
8 Illustrated Parts
1006-0836-000 02/03 8-5
Figure 8-2 • Display components
1
3
4
5
9
8
10
6
2
7
Refer to Note
Section 7.1.2
OT
.0
6.
02
3
Item Description Stock Number
1* Control Board 1504-8507-000
2 Screw, M4x8 SEMS 0140-6226-113
3 Battery, 6 V 4 AH sealed lead acid 1504-3505-000
4 Strap, battery retainer 1504-3509-000
5 Fan, 5 VDC 1504-3516-000
6 Nut, M3 KEPS 0144-3717-302
7 Enclosure, rear 1504-8506-000
8 Power Supply, Universal 40W 1504-3520-000
9 Harness, power AC 1504-5613-000
10 Harness, power DC 1504-5614-000
* Also order appropriate revision Software Memory Stick.
• Refer to Section 8.2 for Stock Number.
• Refer to Section 7.1.1 for instructions regarding a replaced Control Board or
Control Module
7100 Anesthesia Ventilator
8-6 02/03 1006-0836-000
Figure 8-3 • Display, front cover assembly
1 2
3 4
Item Description Stock Number
1 Speaker, with harness 1504-3513-000
2 Screw, M3 0140-6219-128
3 Enclosure, front 1504-3500-000
4 Nut, M4 KEPS 0144-3717-314
8 Illustrated Parts
1006-0836-000 02/03 8-7
Figure 8-4 • Display Keyboard and LCD assembly
456 7, 8
AB
.4
3.
07
5
12
3
ZIF*
Item Description Stock Number
1 Rotary Encoder, switch 1503-3012-000
2 Knob, soft touch 1006-4622-000
3 Keyboard, front panel 1504-3534-000
4 Display, LCD 320x240 (includes backlight) 1504-3507-000
5 Display Cable, flat flex 1504-5602-000
6 Backlight
(Refer to Section7.2.5, “To replace the backlight.”
1504-8509-000
7 Spacer 1504-3525-000
8 Nut, M3 KEPS 0144-3717-302
* ZIF connector; pull tabs toward cable to release.
7100 Anesthesia Ventilator
8-8 02/03 1006-0836-000
Figure 8-5 • Pneumatic Engine, view 1 of 2 (Aestiva machine)
Item Description Stock Number
Pneumatic Engine Assembly, Service-Aestiva machine 1504-8503-000
1 Regulator
O-ring, 9.25 ID x 12.8 OD (2)
1504-3623-000
1503-3056-000
2 PEEP Valve (blue dot) 1504-3610-000
3 PEEP Safety Valve (white dot) 1504-3608-000
4 Pressure Sense Switch
O-ring, 3.63 ID x 8.87 OD
1504-3607-000
1006-4156-000
5 Fitting, 6.35-mm (1/4-inch) 1504-3621-000
6 Plug, 6.35-mm (1/4-inch) 1503-3245-000
7 Manifold Plate Assembly See Figure 8-7
8 Inspiratory Flow Control Valve
O-ring, 9.25 ID x 12.8 OD (2)
1504-3620-000
1503-3056-000
9 Harness, valve switches 1504-5700-000
10 Fitting, 8-mm Drive Gas 1504-3618-000
11 Filter, 2-micron (install course side UP) 1504-3708-000
12 O-ring, 28.24 ID 33.48 OD 1504-3612-000
13 Retainer, filter 1504-3707-000
14 Screw, M4x20 SKT HD CAP
Lockwasher, M4 internal
1503-3105-000
0144-1118-128
Note: The wire harnesses are tie-wrapped at this point to help keep the wires from interfering with the
MOPV weight. If you cut the tie wrap when replacing the Inspiratory Valve or the PEEP Valve harness, be
sure to tie-wrap the harnesses at the same point to ensure proper operation of the MOPV.
8
11
5 6
9
10
12
13 1 2 3 4
7
14
See Note
wwww
Do Not Overtighten
8 Illustrated Parts
1006-0836-000 02/03 8-9
Figure 8-6 • Pneumatic Engine, view 2 of 2 (Aestiva machine)
Item Description Stock Number
1 Interface Manifold, pneumatic engine
(with free breathing valve and mechanical
overpressure valve)
O-ring, 12.42 ID x 15.98 OD (2)
1504-8505-000
1406-3536-000
a - Seat, free breathing valve 1503-3204-000
* b - Valve, flapper 0211-1454-100
c - O-ring 1503-3208-000
2 Riser, dual tube 1504-3705-000
3 Screw, M4x30 CAP HD 9211-0640-304
4 Reservoir, pneumatic engine
O-ring, base, 56.87 ID x 60.43 OD
O-ring, screw head, 0.219 ID x 0.344 OD
1504-3704-000
1504-3614-000
0210-0686-300
* If necessary, clean with alcohol before installing new; trim off flush with outside surface
of seat (refer to removed flapper).
1a
1b
1c
1a
2 3
4
1
7100 Anesthesia Ventilator
8-10 02/03 1006-0836-000
Figure 8-7 • Pneumatic Vent Engine, view 1 of 2 (Aespire machine)
Item Description Stock Number
Pneumatic Engine Assembly, Service-Aespire machine 1009-8000-000
1 Regulator
O-ring, 9.25 ID x 12.8 OD (2)
1504-3623-000
1503-3056-000
2 PEEP Valve (blue dots) 1504-3610-000
3 PEEP Safety Valve (white dot) 1504-3608-000
4 Pressure Sense Switch
O-ring, 3.63 ID x 8.87 OD
1504-3607-000
1006-4156-000
5 Reservoir, pneumatic engine
O-ring, base, 56.87 ID x 60.43 OD
O-ring, screw head, 0.219 ID x 0.344 OD
1504-3704-000
1504-3614-000
0210-0686-300
6 Inspiratory Flow Control Valve
O-ring, 9.25 ID x 12.8 OD (2)
1504-3620-000
1503-3056-000
7 Harness, valve switches 1504-5700-000
8 Fitting, 8-mm Drive Gas 1504-3618-000
9 Filter, 2-micron (install course side DOWN) 1504-3708-000
10 O-ring, 28.24 ID 33.48 OD 1504-3015-000
11 Retainer, filter 1504-3718-000
12 Screw, M4x20 SKT HD CAP
Lockwasher, M4 internal
1503-3105-000
0144-1118-128
13 Vent Engine Board (not part of assembly) Refer to Figure 8-8 •
14 Interface Manifold Refer to Figure 8-8 •
51 23 4
wwww
Do Not Overtighten
13 6 147
8
11
9 1210
12
8 Illustrated Parts
1006-0836-000 02/03 8-11
Figure 8-8 • Pneumatic Engine, view 2 of 2 (Aespire machine
1a
1b
1c
1a
2
1
3 4
5
Item Description
Stock Number
(Aespire)
1 Interface Manifold, pneumatic engine
(with free breathing valve and mechanical
overpressure valve)
O-ring, 12.42 ID x 15.98 OD (2)
1504-8505-000
1006-3615-000
a - Seat, free breathing valve 1503-3204-000
* b - Valve, flapper 0211-1454-100
c - O-ring 1503-3208-000
2 Fitting, 6.35-mm (1/4-inch) 1504-3621-000
3 Plug, 6.35-mm (1/4-inch) 1503-3245-000
4 Fitting, barbed 1504-3014-000
5 Vent Engine Board (not part of assembly) 1009-8001-000
* If necessary, clean with alcohol before installing new; trim off flush
,with outside surface
of seat (refer to removed flapper).
7100 Anesthesia Ventilator
8-12 02/03 1006-0836-000
Figure 8-9 • Manifold plate for an Aestiva machine
Figure 8-10 • Manifold plate for an Aespire machine
b
a
d
c
e
1 3 42
Aestiva machine
Item Description Stock Number
1 Manifold — Aestiva machine
Manifold — Aespire machine
1504-8504-000
1504-3715-000
2* Gasket, manifold — Aestiva machine
Gasket, manifold — Aespire machine
1504-3711-000
1504-3717-000
3 Plate, manifold — Aestiva machine
Plate, manifold — Aespire machine
1504-3712-000
1504-3716-000
4** Screw, M4x12
Lockwasher, M4 internal
1102-3006-000
0144-1118-128
5** Screw, M4x8 Pozidriv PAN 1006-3178-000
* Install gasket into manifold. Check to see that it is properly positioned.
** Carefully install plate onto manifold making sure not to disturb the gasket.
First, start all screws. Then, torque to 1.7 N-m (15 lb-in) using sequence shown.
b
a
d
c e
f
g
Aespire machine
1 3 52
8 Illustrated Parts
1006-0836-000 02/03 8-13
Figure 8-11 • Mounting Bracket, pneumatic engine (Aestiva machine)
1
6
2
4
5
4
2
3
6
Item Description Stock Number
1 Pneumatic Engine Board, PEB 1504-8508-000
2 Cuff, exhalation valve interface 1503-3589-000
3 Plug, 1/8-inch 1006-3611-000
4 Shield, cuff protection 1503-3214-000
5 Screw, M4x8 Pozidriv PAN 1006-3178-000
6 Bracket, pneumatic engine housing 1503-3206-000
7100 Anesthesia Ventilator
8-14 02/03 1006-0836-000
Figure 8-12 • Serial Adapter Board (Aestiva machine)
Note: For the Serial Isolation and Connector Board in the Aespire machine,
refer to the Technical Reference manual for the Aespire machine.
1
5 2
3
4
AB
.2
3.
19
Item Description Stock Number
1 Serial Adapter Board, SAB 1504-5503-000
2 Cable, ribbon, serial out 1006-3703-000
3 Cable, to control board 1504-5606-000
4 Cable, machine switches 1006-3707-000
5 Power Cord Harness, with connector 1504-5705-000
8 Illustrated Parts
1006-0836-000 02/03 8-15
Figure 8-13 • Subfloor components (Aestiva machine)
Note: For the Ventilator Monitoring Board (VMB) in the Aespire machine, refer
to the Technical Reference manual for the Aespire machine.
c
d
b
a
4
3
5
2 1
Item Description Stock Number
1 Monitoring Interface Assembly, MIA 1504-7000-000
a - Coupling, inline, black 1503-3128-000
b - Coupling, inline, white 1503-3119-000
c - Coupling, inline, yellow 1503-3132-000
d - Coupling, inline, blue 1503-3130-000
2 Cable, MIA to control board 1504-5604-000
3 Tubing, 1/4-inch, pressure gauge port to PEB 0994-6370-010
4 Hose Assembly, drive gas supply 1503-3219-000
5 Cable, pneumatic engine 1504-5605-000
Notes
8-16 02/03 1006-0836-000
1006-0836-000 02/03 9-1
9 Schematics and Diagrams
In this section Schematics are subject to change without notice.
Circuit boards are available only as complete assemblies.
Figure 9-1 • Aestiva 7100 ventilator block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2
Figure 9-2 • Aespire 7100 ventilator block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
Figure 9-3 • Aestiva 7100 anesthesia machine pneumatic diagram . . . . . . . . . . . . . . . . . . 9-4
Figure 9-4 • Aespire 7100 anesthesia machine pneumatic diagram . . . . . . . . . . . . . . . . . . 9-5
Figure 9-5 • Aestiva 7100 ventilator wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6
Figure 9-6 • Aestiva 7100 Pneumatic Engine and Pneumatic Engine Board . . . . . . . . . . . . 9-7
Figure 9-7 • Aestiva 7100 breathing system switches to Monitoring Interface Assembly . . 9-7
Figure 9-8 • Aespire 7100 ventilator wiring diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-8
Figure 9-9 • Aespire 7100 ventilator tubing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-9
Figure 9-10 • Control Module block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10
Figure 9-11 • Display Panel block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11
7100 Anesthesia Ventilator
9-2 02/03 1006-0836-000
Figure 9-1 • Aestiva 7100 ventilator block diagram
Flash ROM
Software
Upgrade
Module
Tec 6
AC Input
Power
Cord
AC Inlet
ModuleJ1
63
52
4
AC HarnessJ2
1
Line Fan
Monitoring Interface Assembly
Control Module
7100 Control Board
6V Battery
Monitoring
Board
System Standby
On/Switch
O2 Flush Switch
O2 Supply Switch
Electrical Enclosure
Speaker
Membrane
Switches
Rotary
Encoder
Serial Adapter Cable
Pneumatic Interface Cable
Monitoring Interface Cable
LCD Display
320 X 240
ACGO
Switch
Pneumatic Engine
Inspiratory Valve
PEEP Valve
System Pressure Switch
PEEP Safety Valve
Serial
Adapter
Board
Pneumatic
Engine Board
RS232
Backlight
O2 Sensor
Canister Release Switch
Breathing Circuit ID
Bulkhead
Connector
Absorber Bypass Switch
Bag/Vent Switch
Control Panel Switch
Inspiratory Flow Sensor
Expiratory Flow Sensor
Universal
Power Supply
+6V @ 5A Max
+9V @ 0.5A max
5mm x 20mm
T2L/250 V
AAAA BBBB
.... 4444
3333 ....
0000 8888
5555
9 Schematics and Diagrams
1006-0836-000 02/03 9-3
Figure 9-2 • Aespire 7100 ventilator block diagram
AAAA BBBB
.... 7777
4444 ....
0000 4444
6666
Flash ROM
Software Upgrade
Module
Control Module
7100 Control Board
6V Battery
System Switch
On/Standby
O2 Flush Switch
O2 Supply Switch
Speaker
Membrane
Switches
Rotary
Encoder
LCD Display
320 X 240
Vent Engine
Inspiratory Valve
PEEP Valve
System Pressure Switch
PEEP Safety Valve
Serial Isolation
Connector Board
Vent
Engine
Board
RS232
Backlight
Universal
Power Supply
+6V @ 5A Max5mm x 20mm
T2L/250 V
Power
Cord
Inside Machine
AC Inlet
with
Circuit Breaker and
Line Filter
Surge
or
Inrush
Board
Fuses
Line Filter
Outlet
Box
Isolation
Transformer
Breathing System
Ventilator
Monitoring
Board
Bag/Vent
Switch
ABS On
Switch
O2 Sensor
Expiratory
Flow Sensor
ACGO
Switch
Task Light
Inspiratory
Flow Sensor
Bulkhead
Connector
Pneumatic Interface Cable
Tabletop
Fan
Monitoring Interface Cable
Serial Adapter Cable
7100 Anesthesia Ventilator
9-4 02/03 1006-0836-000
Figure 9-3 • Aestiva 7100 anesthesia machine pneumatic diagram
80 L/min CONTINUOUS
@ 241/689 kPa
SUPPLY
ANESTHESIA
MACHINE
BELLOWS ASSEMBLY
AIR/OXYGEN
PROPORTIONAL
INSPIRATORY
VALVE
4.5 VDC (N.C.)
70 L/min
INLET
FILTER
2 MICRON
PRESSURE
REGULATOR
25 PSIG
SUPPLY
PRESSURE
SWITCH
(N.O.) 17 psi
VENTILATOR PNEUMATIC ENGINE
MECHANICAL
PRESSURE RELIEF VALVE
110 cm H2O
SERVICE
TEST
PORT
PROPORTIONAL
PEEP VALVE
4.5 VDC (N.C.)
10 L/min
-10 TO
110 cm
H2O
241/689
kPa
FREE BREATHING
CHECK VALVE
-1.4 cm H2O
EXHALATION
VALVE
MANIFOLD
PEEP SAFETY VALVE
4.5 VDC (N.C.)
172
kPa
BAG
ADJUSTABLE PRESSURE
LIMITING RELIEF VALVE
(APL)
BAG/VENTILATOR
SWITCH
INSPIRATORY
O2 % MONITOR
EXP
FLOW
XDUCER
BREATHING
CIRCUIT
ID
CONTROL
PANEL
OPEN/CLOSED
INSPIRATORY
02%
CANISTER
RELEASE
LEVER
BYPASS
OPTION
SENSE
BAG/
VENTILATOR
POSITION
SENSE
ACGO
POSITION
SENSE
BULKHEAD
CONNECTOR
PATIENT
LUNGBREATHING
CIRCUIT
MODULE
(CIRCLE)
MONITORING INTERFACE ASSEMBLY
EXPIRATORY
FLOW
SENSOR
INSPIRATORY
FLOW
SENSOR
ACTIVE GAS SCAVENGING INTERFACE
PASSIVE GAS SCAVENGING INTERFACE
RECEIVER (2L)
HIGH OR LOW
FLOW RESTRICTOR FILTER
FLOW
INDICATOR
(OPTIONAL)
+10 CM H20
RELIEF
VALVE
TO
DISPOSAL
SYSTEM
30 mm
OR DRAGER
OR 12 mm
HOSE BARB
TO
DISPOSAL
SYSTEM
DISS EVAC
OR BSI
OR BOC
200 mL
VOLUME
GAS OUTGAS IN
ABSORBER/CO2 BYPASS
OPTIONAL
MAIN
MANIFOLD
ELASTOMER
ELBOW
TRANSFER
TUBE
ABSORBER STANDARD
DRAIN
FRESH GAS FLOW
0.05 / 40.0
L/min
BAG/VENTILATOR
POSITION
SENSE
CANISTER
RELEASE
LEVER
BYPASS
OPTION
SENSE
CANISTER
RELEASE
LEVER
MIA
CABLE TO
VENTILATOR
CONTROL
MODULE
(PEB)
PNEUMATIC
ENGINE
BOARD
AIRWAY
PRESSURE
SENSE
O2 FLUSH
50 L/min
AIRWAY
PRESSURE
XDUCER
FLOW
SENSOR
MODULE
(FSM)
AIRWAY
PRESSURE
,GAUGE
BYPASS
OPTION
SENSE
Y MANIFOLD AGSS
TRANSFER SYSTEM
ROOM
AIR
-2 CM H20
RELIEF
VALVE
RECEIVER (2L)
EXPIRATORY
CHECK VALVE
INSPIRATORY
CHECK VALVE
BAG/VENTILATOR
ABS IN
AGSS
FGF
P
DRAIN
DRAIN
CALIBRATED
BLEED ORIFICE
ATMOSPHERE
ATMOSPHERE
ATMOSPHERE
PEB
CABLE TO
VENTILATOR
CONTROL
MODULE
BELLOWS
CANISTER
BELLOWS
ABS OUT
(MIA)
241/689
kPa
INSP
FLOW
XDUCER
AB
.4
3.
07
3
9 Schematics and Diagrams
1006-0836-000 02/03 9-5
Figure 9-4 • Aespire 7100 anesthesia machine pneumatic diagram
PTPT
PT
NC
P
O2 Cyl (opt)
Patient
Atmosphere
Bag
Ambient
Control Bleed to Ambient
1.0 LPM @ 3.0 cm H2O
if continuous (rate dependent)
Bag/Vent
5.4 psi
P
P
Aux O2
0-10 LPM
(opt)
O2 Flush
O2 P-LINE
AIR P-LINE (opt)
N2O P-LINE (opt, Std US)
110 psi
Relief
N2O Cyl (opt)
O2 Cyl (opt)
25 psi
@ 15 LPM
Venturi
E
xp
. F
lo
w
T
ra
ns
.
Exhalation Valve
(2.0 cm H2O bias)
Free Breathing
Check Valve
Expiratory
Flow Sensor
0-120 LPM Flow
Mechanical Overpressure
Valve (110 cm H2O)
P
Air Cyl (opt)
Vent
Drive
0-10 LPM Drive Gas
0-10 LPM Patient and Fresh Gas
0-20 LPM Total Typical Flow
35 psi
Gas Monitor
Inspiratory
Flow
Control
Valve
Popoff
Valve
O2
Sensor
(opt)
110 psi
Relief
110 psi
Relief
In
sp
. F
lo
w
T
ra
ns
.
P
200 mL Reservoir
APL valve
0-70 cm H2O
Absorber
D
ra
in
Selectatec Manifold
VAP VAP
5.5 psi Pressure
Relief Valve
Flowmeter Module
Link 25 Link 25
30 psi
System Switch
(Dual Flowtubes Optional)
PEEP Safety Valve
Proportional PEEP Valve
Supply Pressure Switch
PGauge
Gauge
Gauge
PGauge
PGauge
Gauge
Gauge
Negative Pressure
relief valve
10 cm H2O
Ventilator Monitoring Board
Airway
Pressure
Gauge
NO
NC
NO
NC
Pneumatic
Engine
Board
ACGO
Selector
Valve
Balance
Regulator
To Scavenging
NO
O2
Flush
Switch Inspiratory
Flow Sensor
O2
Supply
Switch
Air (opt) 30 psi
ACGO
Venturi
AB
.7
4.
02
9
7100 Anesthesia Ventilator
9-6 02/03 1006-0836-000
Figure 9-5 • Aestiva 7100 ventilator wiring diagram
AB
.2
3.
12
4
AB
.2
3.
19
From
AC Inlet
Module
Serial Port
SAB
MIA
Control Module
Airway
Pressure Limit
Sense Tubing
Breathing System
Switches
To
System Switch
Flush
Power Cord
Cable to
Serial Adapter Board
Cable to
Pneumatic
Cable to
Monitoring
Interface
Assembly
O2
Engine
Board
Pressure
Limit
To O2
9 Schematics and Diagrams
1006-0836-000 02/03 9-7
Figure 9-6 • Aestiva 7100 Pneumatic Engine and Pneumatic Engine Board
Figure 9-7 • Aestiva 7100 breathing system switches to Monitoring Interface Assembly
PROPORTIONAL
INSPIRATORY
VALVE
4.5 VDC (N.C.)
70 L/min
INLET
FILTER
2 MICRON
PRESSURE
REGULATOR
25 PSIG
SUPPLY
PRESSURE
SWITCH
(N.O.) 17 psi
VENTILATOR PNEUMATIC ENGINE
MECHANICAL
PRESSURE RELIEF VALVE
110 cm H2O
SERVICE
TEST
PORT
PROPORTIONAL
PEEP VALVE
4.5 VDC (N.C.)
10 L/min
-10 TO
110 cm
H2O
FREE BREATHING
CHECK VALVE
-1.4 cm H2O
PEEP SAFETY VALVE
4.5 VDC (N.C.)
172
kPa
200 mL
VOLUME
PNEUMATIC
ENGINE
BOARD
AIRWAY
PRESSURE
TRANSDUCER
CALIBRATED
BLEED ORIFICE
ATMOSPHERE
ATMOSPHERE
ATMOSPHERE
PEB CABLE TO
VENTILATOR
CONTROL
MODULE
241/689
kPa
UP TUBES
TO BELLOWS
HOUSING
TO EXHALATION
VALVE
TO AIRWAY
PRESSURE PORT
AB
.4
3.
09
9
Control
Panel
Canister
Release
Monitoring
Interface
AssemblyExpiratory
Flow
Pressure
Transducer
Inspiratory
Flow
Pressure
Transducer
From From
Absorber
Bypass
Bag/Vent
To
Breathing
Circuit ID
Flow Sensor
Bulkhead Connector
ACGO microswitchO2 Sensor
Control
Board
(MIA)
AB
.4
3.
08
a
b
c
d
a - black
b - white
c - yellow
d - blue
7100 Anesthesia Ventilator
9-8 02/03 1006-0836-000
Figure 9-8 • Aespire 7100 ventilator wiring diagram
O2 N2O Air
Control/Display Module
Task Light
RS-232
VEB
VMB
ACGOACGO
ACGO
Selector
Switch
Key to Symbols
VEB = Vent Engine Board
VMB = Ventilator Monitoring Board
ACGO = Auxiliary Common Gas Outlet
AC
Inlet
AB
.7
4.
04
7
AB
.7
4.
04
7
9 Schematics and Diagrams
1006-0836-000 02/03 9-9
Figure 9-9 • Aespire 7100 ventilator tubing diagram
Vent Engine
VEB
Scavenging Downtube
Auxiliary O2 Flowmeter
Vaporizer Manifold
From
Flowmeter
From
O2 Supply
Ventilator
Monitoring
Board
ACGO
ACGO
Selector
Switch
Sample
Return
AB
.7
4.
03
3
a - black
b - white
c - yellow
d - blue
a
b
c
d
7100 Anesthesia Ventilator
9-10 02/03 1006-0836-000
Figure 9-10 • Control Module block diagram
TP6
PJ1 TP1 TP2 TP3 TP9 TP10
J1 J2
VR3
VR4
C29
TP12 TP13
TP14
C17 TP4 TP5
TP7TP7
TP11TP11 J3
Q11
TP8
TP15
J16
TP17
TP18
TP16
TP19
TP20
+C45
C56
TP21TP21
TP23
TP25
TP24
Q17
PJ31
Q22
PJ30
TP33 TP34
TP28TP29
TP32
TP35
TP37
TP38
TP39
TP36
TP30 TP31
TP27
TP22
U26
U33
J11 J12J11
J14
J13
J15
J10
J9
J6
J7
J5
U31
U37
J8
PJ28
C74
TP26
J4
U10
To
6V Battery
Line
From AC Inlet
Fan
Backlight
T2L/250V
5mm x 20mm
To
Speaker
To
LCD Display
From
Rotary Encoder
From
Keyboard
From Monitoring Interface Assembly
Software Upgrade To Pneumatic Engine
From Serial Adapter Board
9V
6VTP9
9V
TP10
6V
TP2
GND
AB
.4
3.
07
9
9 Schematics and Diagrams
1006-0836-000 02/03 9-11
Figure 9-11 • Display Panel block diagram
To Backlight
To LCD Display
To Speaker
LCD Display
From
Rotary
Encoder
From
Front Panel
Keyboard
AB
.4
3.
09
8
9-12 02/03 1006-0836-000
Notes
1006 0836 000
02 03 B 01 01 02
Printed in USA
©Datex-Ohmeda, Inc. All rights reserved
Technical Reference Manual, English
7100 Anesthesia Ventilator
Important
Technical Competence
1 Introduction
2�Theory of Operation
3�Post-Service Checkout
4�Tests and Calibration
5�Troubleshooting
6 Maintenance
7 Repair Procedures
8 Illustrated Parts
9 Schematics and Diagrams
1 Introduction
1.1 What this manual includes
1.1.1 Software versions
1.2 Standard service procedures
1.2.1 User’s reference manuals
1.2.2 Technical reference manuals
1.2.3 Ventilator tests
1.3 Symbols used in the manual or on the equipment
2�Theory of Operation
2.1 General Description
2.2 7100 ventilator features
2.2.1 Safety features
2.3 7100 ventilator components
2.3.1 Control Module
2.3.2 Monitoring interface
2.3.3 Serial interface
2.3.4 The Pneumatic Vent Engine
2.4 Electronic and electrical components
2.4.1 The Aestiva 7100 ventilator functional blocks
2.4.2 The Aespire 7100 ventilator functional blocks
2.4.3 Power Supply
2.4.4 Sealed Lead Acid Battery
2.4.5 Control Board
2.4.6 Monitoring interface
2.4.7 Serial interface
2.4.8 Pneumatic Vent Engine Board
2.5 Mechanical Subsystems
2.5.1 Supply Gas
2.5.2 Pressure Regulator
2.5.3 Inspiratory Valve
2.5.4 Exhalation (PEEP) Control
2.5.5 Bleed Resistor
2.5.6 Bellows Pressure Relief Valve
2.5.7 Mechanical Overpressure Valve
2.5.8 Free Breathing Valve
2.5.9 Breathing Circuit Flow Sensors
3�Post-Service Checkout
3.1 Post-service checkout
3.1.1 Test the 7100 ventilator
3.1.2 Test the anesthesia machine
4�Tests and Calibration
4.1 �Self tests
4.2 �Service Mode
4.3 About Ventilator
4.4 Alarm Log
4.5 Error Log
4.6 Language
4.7 User Settings
4.7.1 Screen Contrast
4.8 System Configuration
4.9 Calibrations
4.9.1 O2 Calibrations
4.9.2 Zero Flow and Airway Sensors
4.9.3 Adjust Drive Gas Regulator
4.9.4 Airway Sensor Span
4.9.5 PEEP Valve Calibration
4.9.6 Inspiratory Valve Calibration
4.9.7 Pressure Sensitivity
4.9.8 Service Calibrations Required
4.10 Diagnostic Tests/Tools
4.10.1 Display A/D Channels
4.10.2 Display Discrete I/O Signals
4.10.3 Display Battery Status
4.10.4 Test Panel Switches
4.10.5 Valves - Test Tool
4.10.6 Test CPU and Memory
4.10.7 Test EEPROM
4.10.8 Test Serial Port
4.10.9 Test 5V Fail Alarm
4.10.10 Test Inspiratory Valve
4.10.11 Test PEEP Valve
4.10.12 Test PEEP Safety Valve
4.10.13 Breathing System Leak Test
4.10.14 Test Pressure Limit Circuit
4.11 �Upgrade Options
5�Troubleshooting
5.1 Troubleshooting instructions
5.2 Troubleshooting
,guide
5.3 Alarm and Error messages
5.4 Troubleshooting Flowcharts
5.4.1 Ventilator assessment process
5.4.2 No display troubleshooting
5.4.3 Inaccurate volume ventilation troubleshooting
5.4.5.B VMB board evaluation (Aespire machine)
5.4.6 No ventilation troubleshooting
5.4.7 High intrinsic PEEP troubleshooting
6 Maintenance
6.1 Maintenance Schedule
6.2 Free breathing valve maintenance
6.3 MOPV pressure relief valve test
6.3.1 Test setup
6.3.2 Test procedure
7 Repair Procedures
7.1 Software Installation
7.1.1 After replacing the Control Board or the Control Module
7.2 Control Module
7.2.1 Inside the control module
7.2.2 Control board
7.2.3 Battery and power supply
7.2.4 Front enclosure with control board removed
7.2.5 Front enclosure components
7.3 Pneumatic engine
7.3.1 Pneumatic Engine in an Aestiva machine
7.3.2 Pneumatic Vent Engine in an Aespire machine
7.3.3 Pneumatic engine components (Aespire machine)
7.3.4 Pneumatic engine components (Aestiva machine)
7.3.5 Supply gas inlet filter (Aestiva machine)
7.3.6 Insp/PEEP interface assembly and reservoir
7.3.7 Manifold and plate assembly
7.3.8 Pneumatic Engine Board and housing (Aestiva machine)
7.4 Monitoring Interface Assembly (MIA) in an Aestiva machine
7.5 Serial Adapter Board (SAB) and Power Cord/Harness
8 Illustrated Parts
8.1 Special instructions
8.2 Service tools
8.3 7100 Ventilator parts
9 Schematics and Diagrams
,. . . . . . . . . . . . . . . . . . . . .7-3
7.2 Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-4
7.2.1 Inside the control module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-5
7.2.2 Control board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-6
7.2.3 Battery and power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-7
7.2.4 Front enclosure with control board removed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-8
7.2.5 Front enclosure components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-9
7.3 Pneumatic engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11
7.3.1 Pneumatic Engine in an Aestiva machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11
7.3.2 Pneumatic Vent Engine in an Aespire machine . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12
7.3.3 Pneumatic engine components (Aespire machine) . . . . . . . . . . . . . . . . . . . . . . 7-13
7.3.4 Pneumatic engine components (Aestiva machine) . . . . . . . . . . . . . . . . . . . . . . 7-14
7.3.5 Supply gas inlet filter (Aestiva machine) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-15
7.3.6 Insp/PEEP interface assembly and reservoir . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16
7.3.7 Manifold and plate assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17
7.3.8 Pneumatic Engine Board and housing (Aestiva machine) . . . . . . . . . . . . . . . . 7-18
7.4 Monitoring Interface Assembly (MIA) in an Aestiva machine . . . . . . . . . . . . . . . . . . . . 7-19
7.5 Serial Adapter Board (SAB) and Power Cord/Harness . . . . . . . . . . . . . . . . . . . . . . . . . 7-20
8 Illustrated Parts
8.1 Special instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-2
8.2 Service tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-2
8.3 7100 Ventilator parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-3
9 Schematics and Diagrams
1006-0836-000 02/03 1-1
1
Introduction
In this section
1.1 What this manual includes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
1.1.1 Software versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
1.2 Standard service procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
1.2.1 User’s reference manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
1.2.2 Technical reference manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
1.2.3 Ventilator tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
1.3 Symbols used in the manual or on the equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
7100 Anesthesia Ventilator
1-2 02/03 1006-0836-000
1.1 What this manual includes
This manual covers the service information for the 7100 anesthesia ventilator
which is an integral component in the Aestiva/5 7100 anesthesia machine
and the S/5 Aespire anesthesia.
The Aestiva and the Aespire anesthesia machines have their own respective
Technical Reference Manuals (TRM).
• Aestiva machine TRM: Stock Number 1006-0452-000
• Aespire machine TRM: Stock Number 1009-0356-000
Special notice
Some information in this manual can possibly point the reader to electronic
troubleshooting and component/repair replacement level of service. This
information, when supplied, is only supplied to add clarity to service or trouble
shooting statements. Datex-Ohmeda Service Personnel are mandated by
Company Policy to service electronic equipment to a board replacement level
only.
• Read completely through each step in every procedure before starting
the procedure; any exceptions can result in a failure to properly and
safely complete the attempted procedure.
• Unless otherwise specified, values in this manual are nominal.
• Sections in this manual begin on odd numbered or right-hand pages.
If there is no text on the preceding, backup even numbered page, it is
labeled “Notes” for your use if you wish.
• Figures that require more than one page have the title and main text
on the left (even numbered) page. Additional figure information is on
the facing (odd numbered) page.
1.1.1 Software versions
The revision level is displayed on the ventilator start-up menu. This manual
includes test and calibration procedures for Revision 1.X software.
1 Introduction
1006-0836-000 02/03 1-3
1.2 Standard service procedures
1.2.1 User’s reference
manuals
Operation and maintenance procedures for the 7100 ventilator are covered in
the User’s Reference Manuals (URM) for the respective anesthesia machine.
You must have, and be familiar with, the URMs for this product. Study the
Aestiva or the Aespire URMs if you need further information about the
operation of the system.
1.2.2 Technical reference
manuals
You must first determine where a problem is located before you can determine
which service manual to use:
• Use this manual for Ventilator related problems.
• Use the Aestiva machine TRM (1006-0452-000)
or the Aespire machine TRM (1009-0356-000)
for all other components of the respective anesthesia machine.
1.2.3 Ventilator tests
Service calibration functions let Datex-Ohmeda trained users and
Datex-Ohmeda service personnel perform ventilator setup functions, tests,
calibration and measurements from the front panel display.
Normal operational tests, calibration, and troubleshooting can be performed
on your 7100 ventilator without removing components from the system. Repair
may require removing the ventilator components from the anesthesia
machine.
wwww
WARNING
Section 4,
“Service Mode Tests and Calibration”
must be performed
whenever you access any internal component of the ventilator to verify
that all critical parts of the ventilator are still operational and within
specification.
wwww
WARNING
After the ventilator has been serviced, you must perform
“Post-Service
Checkout”
to verify the entire anesthesia system is properly functioning
before the system can be returned to clinical use.
wwww
WARNING
Do not perform testing or maintenance on this instrument while it is
being used to ventilate a patient, possible injury may result.
7100 Anesthesia Ventilator
1-4 02/03 1006-0836-000
1.3 Symbols used in the manual or on the equipment
w
Warnings and w
Cautions tell you about dangerous conditions that can
occur if you do not follow all instructions in this manual.
Warnings tell about a condition that can cause injury to the operator or the
patient.
Cautions tell about a condition that can cause damage to the equipment. Read
and follow all warnings and cautions.
Other symbols replace words on the equipment or in Datex-Ohmeda manuals.
No one device or manual uses all of the symbols. These symbols include:
m
On (power)
A
Alarm silence button
L
Off (power) Alarm silence touch key (Tec 6).
l
Standby
j
Type B equipment
n
Standby or preparatory state for part of
the equipment
J
Type BF equipment
M
,“ON” only for part of the equipment
D
Type CF equipment
N
“OFF” only for part of the equipment w
Caution, ISO 7000-0434
†
Direct current wW
Attention, refer to product instructions,
IEC 601-1
p
Alternating current
O
Dangerous voltage
x
Protective earth ground
Electrical input
y
Earth ground
Electrical output
P
Frame or chassis ground
Pneumatic input
Y
Equipotential
Pneumatic output
1 Introduction
1006-0836-000 02/03 1-5
+
Plus, positive polarity
k
Movement in one direction
-
Minus, negative polarity
E
Movement in two directions
t
Variability Read top of float
T
Variability in steps Vacuum inlet
g
This way up Suction bottle outlet
o
Lamp, lighting, illumination
Cylinder
z
Lock
Isolation transformer
Z
Unlock Linkage system
U
Close drain
Risk of Explosion.
u
Open drain (remove liquid) Low pressure leak test
134°C
Autoclavable
r
Mechanical ventilation
Í
Not autoclavable
R Bag position/ manual ventilation
q Inspiratory flow Q Expiratory flow
t O2 sensor connection
O2+ O2 Flush button
REF Stock Number SN Serial Number
7100 Anesthesia Ventilator
1-6 02/03 1006-0836-000
Alarm silence touch key Volume alarms On/Off touch key
End case touch key Menu touch key
Circle breathing circuit module Bain/Mapleson D breathing circuit
module
The primary regulator is set to pressure
less than 345 kPa (50 psi)
The primary regulator is set to pressure
less than 414 kPa (60 psi)
Absorber on CO2 Bypass Option
Absorber off (CO2 Bypass active)
Systems with this mark agree with the
European Council Directive (93/42/
EEC) for Medical Devices when they
are used as specified in their
Operation and Maintenance Manuals.
The xxxx is the certification number of
the Notified Body used by Datex-
Ohmeda’s Quality Systems.
European Union Representative
< 345 kPa < 414 kPa
1006-0836-000 02/03 2-1
2 Theory of Operation
In this section This section includes functional descriptions and theory of operation for the major
components of the 7100 ventilator.
2.1 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
2.2 7100 ventilator features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
2.2.1 Safety features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
2.3 7100 ventilator components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5
2.3.1 Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6
2.3.2 Monitoring interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7
2.3.3 Serial interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7
2.3.4 The Pneumatic Vent Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
2.4 Electronic and electrical components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-9
2.4.1 The Aestiva 7100 ventilator functional blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-9
2.4.2 The Aespire 7100 ventilator functional blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
2.4.3 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2.4.4 Sealed Lead Acid Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2.4.5 Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
2.4.6 Monitoring interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
2.4.7 Serial interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
2.4.8 Pneumatic Vent Engine Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18
2.5 Mechanical Subsystems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
2.5.1 Supply Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
2.5.2 Pressure Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
2.5.3 Inspiratory Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
2.5.4 Exhalation (PEEP) Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
2.5.5 Bleed Resistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
2.5.6 Bellows Pressure Relief Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
2.5.7 Mechanical Overpressure Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
2.5.8 Free Breathing Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
2.5.9 Breathing Circuit Flow Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
7100 Anesthesia Ventilator
2-2 02/03 1006-0836-000
2.1 General Description
The 7100 ventilator is a microprocessor based, electronically-controlled,
pneumatically-driven ventilator with a built-in monitoring system for
inspired oxygen, airway pressure and exhaled volume. The ventilator is an
integral component of the Aestiva/5 7100 anesthesia machine and the S/5
Aespire anesthesia machine.
Figure 2-1 includes a functional block diagram of the 7100 ventilator
components as used in an Aestiva anesthesia machine.
Figure 2-2 includes a functional block diagram of the 7100 ventilator
components as used in an Aespire anesthesia machine.
Figure 2-1 • 7100 ventilator functional block diagram as used in an Aestiva anesthesia machine
Flash ROM
Software
Upgrade
Module
Tec 6
AC Input
Power
Cord
AC Inlet
ModuleJ1
63
52
4
AC HarnessJ2
1
Line Fan
Monitoring Interface Assembly
Control Module
7100 Control Board
6V Battery
Monitoring
Board
System Standby
On/Switch
O2 Flush Switch
O2 Supply Switch
Electrical Enclosure
Speaker
Membrane
Switches
Rotary
Encoder
Serial Adapter Cable
Pneumatic Interface Cable
Monitoring Interface Cable
LCD Display
320 X 240
ACGO
Switch
Pneumatic Engine
Inspiratory Valve
PEEP Valve
System Pressure Switch
PEEP Safety Valve
Serial
Adapter
Board
Pneumatic
Engine Board
RS232
Backlight
O2 Sensor
Canister Release Switch
Breathing Circuit ID
Bulkhead
Connector
Absorber Bypass Switch
Bag/Vent Switch
Control Panel Switch
Inspiratory Flow Sensor
Expiratory Flow Sensor
Universal
Power Supply
+6V @ 5A Max
+9V @ 0.5A max
5mm x 20mm
T2L/250 V
AAAA BBBB
.... 4444
3333 ....
0000 8888
5555
2 Theory of Operation
1006-0836-000 02/03 2-3
Figure 2-2 • 7100 ventilator functional block diagram as used in an Aespire anesthesia machine
Flash ROM
Software Upgrade
Module
Control Module
7100 Control Board
6V Battery
System Switch
On/Standby
O2 Flush Switch
O2 Supply Switch
Speaker
Membrane
Switches
Rotary
Encoder
LCD Display
320 X 240
Vent Engine
Inspiratory Valve
PEEP Valve
System Pressure Switch
PEEP Safety Valve
Serial Isolation
Connector Board
Vent
Engine
Board
RS232
Backlight
Universal
Power Supply
+6V @ 5A Max5mm x 20mm
T2L/250 V
Power
Cord
Inside Machine
AC Inlet
with
Circuit Breaker and
Line Filter
Surge
or
Inrush
Board
Fuses
Line Filter
,Outlet
Box
Isolation
Transformer
Breathing System
Ventilator
Monitoring
Board
Bag/Vent
Switch
ABS On
Switch
O2 Sensor
Expiratory
Flow Sensor
ACGO
Switch
Task Light
Inspiratory
Flow Sensor
Bulkhead
Connector
Pneumatic Interface Cable
Tabletop
Fan
Monitoring Interface Cable
Serial Adapter Cable
AAAA BBBB
.... 7777
4444 ....
0000 4444
6666
7100 Anesthesia Ventilator
2-4 02/03 1006-0836-000
2.2 7100 ventilator features
• Sensors in the breathing circuit are used to control and monitor
patient ventilation and measure inspired oxygen concentration. This
lets the ventilator compensate for compression losses, fresh gas
contribution, valve and regulator drift and small leakages in the
breathing absorber, bellows and system.
• Positive End Expiratory Pressure (PEEP) is generated
electronically. PEEP is not active when mechanical ventilation is
off.
• User settings and microprocessor calculations control breathing
patterns. User interface settings are kept in non-volatile memory.
• Mechanical ventilation is started with the Bag/Vent switch on the
breathing system.
• The 7100 ventilator reads the status of the Bag/Vent switch and the
breathing circuit type (Circle, Bain — Aestiva only). The operator
does not have to set the breathing circuit type from a menu.
• The 7100 ventilator has an operator-selectable Heliox mode
(Aestiva only) to permit gas composition compensation when
Heliox gas is used.
• The 7100 ventilator has minimum monitoring and alarms
managed on the ventilator panel (there is no other panel for safety
relevant alarm management, etc.).
• Ventilator hardware is regularly monitored by software tests.
• An RS-232 serial digital communications port connects to and
communicates with external devices.
• An exhalation valve modulates flow in the pressure mode.
• Pressure and volume modes are selectable by the operator.
• All pneumatic components are located on one manifold.
• Exhausted drive gas and bellows pressure relief valve gases are
mixed and go through the ventilator exhalation valve.
• The exhalation valve block is autoclavable.
• Excess fresh gas released from the bellows and ventilator drive gas
are transferred from the exhalation valve to the Anesthesia Gas
Scavenging System (AGSS).
• Optimized for service with a low number of components.
2.2.1 Safety features • Dual redundant airway overpressure protection, linked to Plimit
setting.
• Volume over-delivery limits and protection.
• Proprietary hose connections and fixed manifolds.
• Proven mechanical components used.
• 10 VA electrical power limiting to potential oxygen enriched
environment.
• 150 psi burst overpressure protection.
2 Theory of Operation
1006-0836-000 02/03 2-5
2.3 7100 ventilator components
Major components of the 7100 ventilator are found in different locations of
the anesthesia machine. These components, in general, serve identical
functions in either machine; however, since some components have minor
differences and are not interchangeable, they are named differently.
The ventilator package consists of:
1. a Control Module (CM) — which is identical for both machines.
The CM includes:
• a Control Board (CB)
• an LCD Display
• a Keyboard (with rotary encoder switch)
• a Power Supply
• a backup battery
2. a Monitoring Interface Assembly (MIA) in an Aestiva machine
or a Ventilator Monitoring Board (VMB) in an Aespire machine.
3. a Serial Adapter Board (SAB) in an Aestiva machine
or a Serial Isolation Connector Board (SICB) in an Aespire machine.
4. a Pneumatic Engine (PE) with Pneumatic Engine Board (PEB) in an Aes-
tiva machine or a Vent Engine (VE) with a Vent Engine Board (VEB) in
an Aespire machine.
Figure 2-3 • Location of 7100 ventilator components
AA
.9
6.
25
2
AB
.7
4.
00
5
1
2
3
1
4
2
3
4
Aestiva machine Aespire machine
7100 Anesthesia Ventilator
2-6 02/03 1006-0836-000
2.3.1 Control Module The control module consists of two enclosures.
The rear enclosure includes:
1. inline fuses
2. a power supply
3. a cooling fan
4. a backup battery
The power supply receives AC power from the anesthesia machine. All the
power necessary to operate the ventilator comes from the power supply.
The front enclosure includes:
5. a control board (controls operation of the ventilator)
6. a front panel assembly
The front panel assembly includes four submodules:
7. an LCD display
8. a keyboard front panel
9. a rotary encoder
10. a speaker
Figure 2-4 • 7100 ventilator control module
7 98
1
2
3
4
5
6
10
1
2 Theory of Operation
1006-0836-000 02/03 2-7
2.3.2 Monitoring
interface
The Monitoring Interface Assembly (MIA) in the Aestiva machine or the
Ventilator Monitoring Board (VMB) in the Aespire machine serves as the
interface between the ventilator’s control board and the breathing system
sensors and switches:
• the inspiratory and expiratory flow sensors
• the O2 sensor
• the Bag/Vent switch
• Module ID board switches (for the Aestiva machine). The Aespire
VMB is hardwired to indicate a Circle module.
• the canister release switch (in the Aestiva machine). The Aespire
machine does not indicate an open canister.
• the absorber bypass switch (in the Aestiva machine).
• the control panel switch (in the Aestiva machine). The Aespire
machine uses this signal to indicate that the ABS breathing system
is disengaged.
• the Auxiliary Common Gas Outlet (ACGO) switch
The MIA for the Aestiva 7100 ventilator is located under the front and rear
subfloors of the breathing system (below the bulkhead). The VMB for the
Aespire 7100 ventilator is located under the tabletop (below the
worksurface).
2.3.3 Serial interface The Serial Adapter Board (SAB) in the Aestiva machine or the Serial
Interface and Connection Board (SICB) in the Aespire machine provides two
functions. It serves as the interface between the ventilator’s control board and
additional switches located in the machine and channels serial
communications signals from the controller board to the RS232 connector.
The machine switches include:
• the System On/Standby switch
• the O2 supply pressure switch
• the O2 flush switch
The SICB in an Aespire machine also includes an on/off signal through the
RS232 connector to a remote monitor.
7100 Anesthesia Ventilator
2-8 02/03 1006-0836-000
2.3.4 The Pneumatic
Vent Engine
The Pneumatic Vent Engine components in the Aestiva machine or the
Aespire machine are identical; however, the complete assemblies are not
interchangeable due to packaging considerations. The pneumatic engine
enclosure is located in the back chamber of the breathing system and is
shielded to contain EMI emissions. The enclosure includes the Pneumatic
Vent Engine (PE/VE) and a Pneumatic Vent Engine control Board
(PEB/VEB).
The Pneumatic Vent Engine comprises the hardware that drives the ventilator
bellows. It includes:
• a 2-micron inlet filter
• a pressure regulator
• a proportional inspiratory valve
• a mechanical over-pressure relief valve
• a free-breathing check valve
• a PEEP safety valve
• a supply pressure sense switch
• a proportional PEEP valve
• a 200 mL reservoir
• a calibrated bleed orifice
The Pneumatic Vent Engine Board is an interface between the engine
components and the control board and includes:
• an airway pressure transducer
2 Theory of Operation
1006-0836-000 02/03 2-9
2.4 Electronic and electrical components
2.4.1 The Aestiva 7100
ventilator functional
blocks
The Aestiva 7100 ventilator electronic/electrical subassemblies or modules
include:
• a Power Supply for operation under line power
and a backup battery for limited operation in case of power failure;
• a Control Board with digital, analog and power circuits to manage
all operations of the ventilator;
• a Front Panel Assembly that includes an LCD display for display
of all ventilation and monitoring parameters
and a keyboard for operator input;
,• a Monitoring Interface Assembly to preprocess patient circuit
parameters and to channel the breathing system switch states;
• a Serial Adapter Board to channel machine switch states and to
provide a RS232 serial output for external communication.
Figure 2-5 • Electronic functional block diagram as used in an Aestiva machine
Power
Cord
AC Inlet
System Breaker
Line Filter
Inside Machine
Fan
Universal
Power Supply
+6V @ 5A max
+9V @ 0.5A max 6 Volt
Battery
Control Board
MCF5206e ColdFire Processor
Memory and I/O Decoding
Flash, SRAM & EEPROM
SCR Circuitry
A/D – D/A Converter
Watchdog System
Inspiratory Valve Control (10 VA limited)
PEEP Valve Control (10 VA limited)
12 VDC Supply (10VA limited)
DC Supply Monitoring
Battery Management
Pneumatic Engine
Inspiratory Valve
PEEP Valve
Supply Pressure Switch
PEEP Safety Valve
Monitoring Interface
Assembly
Inspiratory Flow Transducers
Expiratory Flow Transducers
Breathing System
Flow Sensors
Bag/Vent Switch
Control Panel Switch
Canister Release Switch
Absorber Bypass Switch
Breathing Circuit ID
O2 Sensor
ACGO Switch
O2 Supply
Keyboard
Membrane
Switches
LCD Display
320 x 240
Control Module
O2 FlushMachine/Ventilator
On/Standby switch
LCD Backlight
Rotary
Encoder
Switch
PEB
Airway
Pressure
Transducer
Speaker
Serial Adapter
Board
2 fuses
5mm x 20mm
T2L/250 V
RS232
AB
.4
3.
14
3
7100 Anesthesia Ventilator
2-10 02/03 1006-0836-000
2.4.2 The Aespire 7100
ventilator functional
blocks
The Aespire 7100 Ventilator electronic/electrical subassemblies or modules
include:
• a Power Supply for operation under line power
and a backup battery for limited operation in case of power failure;
• a Control Board with digital, analog and power circuits to manage
all operations of the ventilator;
• a Front Panel Assembly that includes an LCD display for display
of all ventilation and monitoring parameters
and a keyboard for operator input;
• a Ventilator Monitoring Board to preprocess patient circuit
parameters and to channel the breathing system switch states;
• a Serial Isolation Connection Board to channel machine switch
states and to provide a RS232 serial output for external
communication.
Figure 2-6 • Electronic functional block diagram as used in an Aespire machine
Power
Cord
Inside Machine
Fan
Universal
Power Supply
+6V @ 5A max
+9V @ 0.5A max
6 Volt
Battery
Control Board
MCF5206e ColdFire Processor
Memory and I/O Decoding
Flash, SRAM & EEPROM
SCR Circuitry
A/D – D/A Converter
Watchdog System
Inspiratory Valve Control (10 VA limited)
PEEP Valve Control (10 VA limited)
12 VDC Supply (10VA limited)
DC Supply Monitoring
Battery Management
Pneumatic Engine
Inspiratory Valve
PEEP Valve
Supply Pressure Switch
PEEP Safety Valve
Breathing System
O2 Supply
Keyboard
Membrane
Switches
LCD Display
320 x 240
Control Module
O2 FlushMachine/Ventilator
On/Standby switch
LCD Backlight
Rotary
Encoder
Switch
PEB
Airway
Pressure
Transducer
Speaker
Serial Isolation
Connector Board
2 fuses
5mm x 20mm
T2L/250 V
RS232
AC Inlet
with
Circuit Breaker
and
Line Filter
Surge
or
Inrush
Board
Fuses Line
Filter
Outlet
Box
Isolation
Transformer
Ventilator
Monitoring
Board
Task Light
Bag/Vent
Switch
ABS On
Switch
Exp Insp
Transducers
O2 Sensor
Flow SensorsExp
Insp
ACGO
Switch
AB
.7
4.
02
8
2 Theory of Operation
1006-0836-000 02/03 2-11
2.4.3 Power Supply The power supply receives AC input from the machine’s AC Inlet Module.
The power supply is a universal 40 watt switching supply that outputs two DC
voltages. The DC voltages are routed to the Control Board where they are
further regulated to produce the power requirements for the 7100 ventilator
system.
• Input:
Universal 85–264 VAC 47–63 Hz
• Output V1:
6.0 VDC (±0.5%) at 0–5 A
• Output V2:
9.0 VDC (±5%) at 0–0.5 A
wwww WARNING
High voltage in area of Osymbol.
Figure 2-7 • 7100 Ventilator power supply
2.4.4 Sealed Lead Acid
Battery
A sealed lead acid battery supplies battery backup for the 7100 ventilator.
Since it only provides power in case of a power failure, the battery is in a float
charge state most of the time.
The battery meets the following:
• capacity to operate ventilator system for 30 minutes (fully charged);
• long float charge life;
• the battery is internally fused (auto-resettable).
Input: Nominally 6.8 VDC at 25oC during float charge.
Output: +0.6 to +6 Amps during discharge
Line
Neutral
6V return
6V
9V return
9V
7100 Anesthesia Ventilator
2-12 02/03 1006-0836-000
2.4.5 Control Board The Control Board contains all of the major circuit functions necessary to
control ventilator operation.
The Control Board comprises three functional circuit types:
• power circuits,
• analog circuits,
• digital circuits.
These circuits are detailed individually in the following sections.
Overall, the Control Board’s functions include:
• Bus access control signals for all memory and peripheral devices
• Interrupt handling
• Clocks and timers for the system
• RS232C serial I/O
• Baud rate generator for serial port
• Hard (power-up) and soft (watchdog error) reset generation
• Data bus buffers
• Memory and I/O decoding
• Program memory with “memory stick” software upgrade
• Safety Relevant Computing (SRC)
• Watchdog system
• Data acquisition
• Flow valve control
• PEEP valve drive and PEEP safety valve drive
• Front panel interface
• Audio alarm
Figure 2-8 • Control board
M
em
or
y
St
ic
k
2 Theory of Operation
1006-0836-000 02/03 2-13
2.4.5.1 Control Board
Power Circuits
The power section of the controller board receives the 6 VDC and the 9 VDC
outputs from the power supply.
The 9 VDC supply is used to charge the backup battery.
The 6 VDC supply is processed further to supply various power requirement
throughout the 7100 ventilator. In case of power failure, the battery is
switched in to supply power.
• power to drive the fan (5V)
• 5V supply for digital circuits
• 3.3V supply for the CPU
• 5V supply for the LCD display backlight
• -24V adjustable supply for the LCD display contrast adjustment
• 1.5A supply for control of the Inspiratory and PEEP valves
• +12V supply for analog circuits
• +12V supply for the Monitoring Interface Assembly
• -12V supply for analog circuits
Figure 2-9 • Control board block diagram - Power circuits
SUPPLY MONITOR & SELECTION
P-CH MOSFET SWITCHES
ON / STBY SWITCH
VOLTAGE MONITOR
OUTPUT TO A/D
CURRENT MONITOR
OUTPUT TO A/D
5V (FAN 200mA MAX)
5V +-4% 1.7A MAX (DIGITAL)
3.3V +-4% @ 0.2A MAX (CPU)
5V @ 700mA
(BACK LIGHT SUPPLY)
(LCD CONTRAST ADJUST)
-24V ADJUSTABLE
+12V @ 100mA (ANALOG)
1.5A (FLOW & INLET VALVES)
85 --- 264 VAC SWITCHER
APPROVALS:
IEC 601-1
UL - 2601
CSA 601 - 1
ON / STANDBY SWITCH CIRCUIT
6V BATTERYBATTERY CHARGER
UC3906
VOLTAGE & CURRENT
MONITOR
5V LDO (MIC29150-5.0BU)
5V LDO (MIC29150-5.0BT)
3.3V LDO
PTC PI FLTR
MAX686
PTC
LDO / 10VA
LDO
LDO / 10VA
+12V @ 150mA
(MONITOR BOARD)
-12V @ 50mA (ANALOG)
NATIONAL
LM2585
SWITCHER
9.0 V @ 500mA MAX
+13V
-13V
VBUS
6.2 ~ 5.3V
6.0V @ 5A MAX
AC
Input
BUZZER
VSWITCH
AAAA BBBB
.... 4444
3333 ....
0000 9999
2222
7100 Anesthesia Ventilator
2-14 02/03 1006-0836-000
2.4.5.2 Control Board
Analog Circuits
The analog section of the controller board processes inputs from the
Monitoring Interface Board and the Pneumatic Engine Board. It multiplexes
the inputs for display by the digital section.
• Inspiratory flow
• Expiratory flow
• Airway O2
• Airway pressure
Under the control of the digital section, the analog section includes drivers for
the pneumatic engine components:
• flow valve (inspiratory valve)
• PEEP valve
• PEEP safety valve
The switch signals from the Monitoring Interface Board and the supply
pressure signal from the Pneumatic Engine Board are passed on as inputs to
the digital section.
Figure 2-10 • Control board block diagram - Analog circuits
M
on
ito
rin
g
Bo
ar
d
,Co
nn
ec
to
r
ACGO
E2_PWR_ON
SCLK+
SCLK-
INSP_DATA
EXP_DATA
INSP
EXP
O2
O2_DISCONNECT
+12V_10VA
BAG / VENT
SW1
SW2
SW3
INSP_RET
EXP_RET
O2_RET
O2 IA
Insp IA
Exp IA
No
is
e
Fi
lte
rAGND
DGND
30 Hz
3-Pole
Filter
Pn
eu
m
at
ic
E
ng
in
e
Bo
ar
d
Co
nn
ec
to
r
8-Ch
MUX
4.096 Volt
Reference
Airway IA
No
is
e
Fi
lte
r
Dual 12-Bit
Serial DAC
Flow
Valve
Driver
PEEP
Valve
Driver
Safety
Valve
Driver
Voltage
Monitor
VDD
VDD2
VBUS
VDD_FAIL
VDD2_FAIL
VBUS_FAIL
SAFETY_VLV_ON
P_PAT
P_PAT_RET
FLOW_DR
PEEP_DR
SAFETY_VLV_DR
SUPPLY PRESSURE LOW
3
FLOW_VLV_V
PEEP_VLV_V
ADC_TEST_REF
AGND_REF
PEEP_DAC
FLOW_DAC
12V_10VA_TEST
P12V_TEST
N12V_TEST
IBATT
VBATT
MUX_A0
MUX_A1
MUX_A2
Comparator
REF
HI_PRESS
Buffer
Conditioning
Circuits
12V_10VA
P12V
N12V
12V_10VA_TEST
P12V_TEST
N12V_TEST
INSP_FLOW
EXP_FLOW
AIRWAY_PRESS
O2_SENSOR
8-Ch
12-Bit
Serial
ADC
1 2
3
4
5
6
7
8
1
2
3
4
5
6
7
SAFETY_VLV_FAULT
Divider/
Buffer
FLOW_VLV_V
PEEP_VLV_V
DAC A
DAC B
FLOW_DAC
PEEP_DAC
SD_CLK
SD_IN
SD_OUT
CPCVR_OPEN
CANI_REL
BYPASS
No
is
e
Fi
lte
r
No
is
e
Fi
lte
r
30 Hz
3-Pole
Filter
30 Hz
3-Pole
Filter
30 Hz
3-Pole
Filter
Divider/
Buffer
AB
.4
3.
09
3
2 Theory of Operation
1006-0836-000 02/03 2-15
2.4.5.3 Control Board
Digital Circuits
The digital section of the controller board includes a MCF5206e ColdFire
microcontroller. The 7100 operating software is stored in 2MB of 8-bit
(1Mx16) Flash ROM and includes 1MB of 8-bit (512Kx16) static RAM
(SRAM) for operation.
The controller receives switch inputs from the front panel keyboard and the
system switch inputs from the Monitoring Interface Board, the Serial
Interface Board and the Pneumatic Engine Board.
The patient circuit parameters are multiplexed through the analog section.
The LCD Display is driven through the Video Controller. It displays the
processed patient circuit parameters along with the derived alarm and system
condition messages.
Additional outputs include an audio amplifier to drive the speaker and a
RS232 driver for external communication through the Serial Interface Board.
Figure 2-11 • Control board block diagram - Digital circuits
UD0~3, VCLK,
HS, VS,
LCD_DIS
A1-A20,
D16-D31
A0
-A
20
D1
6-
D3
1
MCF5206e COLDFIRE
MICROCONTROLLER
Serial Adapter Connector
SRAM
( 512K X 16 )
SED1353
VIDEO
CONTROLLERFI
LT
ER
&
FE
RR
IT
E
BE
AD
S
VIDEO SRAM
( 32K X 8 )
DS1232
WATCHDOG
& RESET
LC
D
BA
CK
LI
GH
T
IN
VE
RT
ER
A1-A19,
D16-D31
A0-A14,
D24-D31
SYSTEM DATA BUS & ADDRESS BUS
INPUT1
74HCT257X2
D24-D31
D24-D31
LC
D
Di
sp
la
y
Co
nn
ec
to
r
CC
FL
B
ac
kl
ig
ht
Co
nn
ec
to
r
LM
48
62
M
AU
DI
O
AM
P
Sp
ea
ke
r
Co
nn
ec
to
r
I2C EEPROM
( 2K X 8 )
VA
0-
VA
15
,
VD
0-
VD
7
INPUT2
74HCT257X2
RS232 DRIVER
ADM202E
Monitoring Board
Connector
Fr
om
P
ow
er
Su
pp
ly
S
ec
tio
n
FLASH
( 1M X 16 )
OUTPUT1
74HCT259
OUTPUT2
74HCT573
5V
3.3V
-24V
ADJ
BA
G_
VE
NT
, A
CG
O,
O2
_D
IS
CO
NN
EC
T,
S
W
1,
SW
2,
S
W
3,
C
AN
I_
RE
L,
LO
W
_O
2_
SW
, O
2_
FL
US
H,
SU
PP
LY
_L
OW
,
CP
CV
R_
OP
EN
, B
YP
AS
S,
DA
C_
RE
SE
T,
M
EC
H_
VE
NT
_E
N,
EX
_S
PI
_I
N,
E
X_
IS
SI
_I
N
FL
AS
H_
W
P,
M
EC
H_
VE
NT
_E
N,
L
CD
V_
UP
,
LC
DV
_D
N,
IN
SP
_E
N,
E2
_P
W
R_
ON
,
CH
G_
DI
SA
BL
E,
W
IP
_U
P
M
UX
_A
2,
M
UX
_A
1,
M
UX
_A
0,
EX
_S
D_
CS
1,
EX
_S
D_
CS
0,
EX
_S
D_
CL
K,
EX
_S
D_
OU
T
AL
AR
M
_S
W
, E
ND
_C
AS
E_
SW
,
EN
D_
CA
SE
_S
W
, R
AT
E_
SW
,
I:E
_S
W
, P
LI
M
IT
_S
W
,
PE
EP
_S
W
, M
EN
U_
SW
,
ST
AN
DB
Y_
SW
,
PU
SH
BU
TT
ON
_S
W
,
M
EC
H_
VE
NT
_S
W
,
SA
FE
TY
_V
LV
_F
AU
LT
,
EN
CO
DE
R_
DI
R,
PW
R_
OF
F_
RQ
ST
, H
I_
PR
ES
S,
VB
US
_F
AI
L
WD_EN, IRQ7, IRQ4, IRQ1, HI_PRESS,
SAFETY_OFF, ALARM_TEST,
DAC_RES, DAC_LATCH, SD_CLK,
SD_OUT, SD_IN
MULTIPLEXER
74HC4052
I2C CLOCK
DRIVER
MAX488
EPLD-EPM7128
WATCHDOG
LOGIC
VENTILATION
CONTROL
ADDRESS
DECODING
SPI SERIAL
INTERFACE
SOUND ENVELOP
CONTROL
X9315, LMV822
5V
D24-D31
-24V
ADJ
UD0~3, VCLK,
HS, VS,
LCD_DIS
A0
-A
20
D1
6-
D3
1
D24-D31
AB
.4
3.
09
4
7100 Anesthesia Ventilator
2-16 02/03 1006-0836-000
2.4.6 Monitoring
interface
The breathing circuit monitoring interface (MIA in the Aestiva machine and
VMB in the Aespire machine) is the interface between the patient circuit
sensors (the inspiratory and expiratory flow sensor, the O2 sensor) and the
ventilator control module. It also passes different switch functions through to
the ventilator control module. These switches are used to show the position
of covers, breathing circuit modules and pneumatic controls in the breathing
circuit.
Respiratory gas flow, to and from the patient, is monitored by measuring the
differential pressure across a variable orifice in each flow sensor. The
pressure transducers for measuring the differential pressure are on the
MIA/VMB. Conditioning circuitry is supplied for these transducers and for
the Oxygen sensor used in the breathing circuit.
Pressure sense tubing and signal wiring is routed from the sensors and
switches in the breathing system to the MIA/VMB. A separate cable, routed
through the breathing system and the machine proper, transfers power and
signals to and from the Control Board.
Figure 2-12 • Breathing Circuit Monitoring Interface Assembly (MIA)
Co
nt
ro
l B
oa
rd
C
on
ne
ct
or
O2
S
en
so
r
Co
nn
ec
to
r
AC
GO
Co
nn
ec
to
r
Sw
itc
h
/ F
lo
w
S
en
so
r
Co
nn
ec
to
r
+5V
Regulator
+6.0V
Regulator
-6.0V
Inverter
O2 Am
p
O2
Buffer
Insp
Buffer
Exp
Buffer
EEPROM
Clock
Receiver
EMI Filters
and ESD
Suppressors
EMI Filters and
ESD Suppressors
Noise
Filter
ACGO
E2_PWR_ON
SCLK+
SCLK-
INSP_DATA
EXP_DATA
INSP
EXP
O2
O2_DISCONNECT
+12V+12V
BAG / VENT
SW1
SW2
SW3
SW1
SW2
SW3
BAG / VENT
+12V
+5V
EXP_CLK
INSP_DATA
EXP_DATA
INSP_CLK
GND
Inspiratory Pressure
Transducer
Expiratory Pressure
Transducer
GND
+6.0V ANALOG
-6.0V ANALOG
INSP_RET
EXP_RET
O2_RET
CPCVR_OPEN
CANI_REL
BYPASS
CPCVR_OPEN
CANI_REL
BYPASS
Insp
IA
ExpIA
Adjustable Gain & Offset
GNDEMI Filters
and ESD
Suppressors
Noise
Filter
EMI Filters
and ESD
Suppressors
AB
.4
3.
09
5
Notes regarding VMB:
SW1, SW2, and SW3 are hard
wired at the Control Board
Connector to indicate a Circle
Module.
The CPCVR_OPEN signal is
renamed ABS_ON.
The BAG/VENT and the
ABS_ON signal arrive at the
O2 Sensor Connector.
The VMB includes a 100 mA
Current Source that supplies
power to the Task Light from
the +12V line.
2 Theory of Operation
1006-0836-000 02/03 2-17
2.4.7 Serial interface The serial board (SAB/SICB) provides two functions:
• It serves as an interface between the control board and switches that
are located in the machine itself (not in the breathing system).
• It processes serial communications signals from the control board
to the RS232 connector (COM 1) on the back panel of the Aestiva
machine.
Machine Switches The machine switches include:
• the System On/Standby switch
• the O2 supply pressure switch
• the O2 flush switch
Serial Communications The serial interface provides isolated RS232 serial communications. The
TXD (transmit) and RXD (receive) signals between the SAB and the control
board are at RS232 levels.
Circuits on the board change the signals to digital 5V levels; isolate them
through optocouplers; then, change them back to RS232 levels before
sending them to the outside world.
• The external communications signals conform to standard
RS-232C signal standards.
• COM 1 is a 15-pin female D connector.
• It’s configured for Data Communications Equipment (DCE)
• Pin 6 - receive data
• Pin 13 - transmit data
• Pin 5 - signal ground
In addition to the above, the SICB in the Aespire machine provides remote
monitor On/Off through an isolated relay.
• Pin 1 - MON On/Standby
• Pin 9 - MON On/Standby return
M
,AC
HI
NE
S
W
IT
CH
ES
CO
NN
EC
TO
R
71
00
C
ON
TR
OL
B
OA
RD
CO
NN
EC
TO
R
RS232
ISOLATED
DRIVER /
RECEIVER
ISOLATION
TRANSFORMER
OPTICAL
ISOLATORS
71
00
S
ER
IA
L
PO
RT
CO
NN
EC
TO
R
ISO_RXD1
ISO_TXD1
ISO_RXD
ISO_TXD
RXD1_232
TXD1_232
RXD_232
TXD_232
/O2_FLUSH
GND
LOW_O2_SW
GND
/O2_FLUSH
LOW_O2_SW
REM_ON
REM_ON
ISOLATED POWER
RS232
ISOLATED
DRIVER /
RECEIVER
AB
.4
3.
09
6
Note regarding SICB:
The machine switch signals
come in on three separate
connectors.
7100 Anesthesia Ventilator
2-18 02/03 1006-0836-000
2.4.8 Pneumatic Vent
Engine Board
The Pneumatic Vent Engine Board (PEB/VEB) provides two functions:
• It serves as an interface between the control board and the pneumatic
engine.
• It processes the output from the airway pressure transducer.
Pneumatic Engine Interface The board provides a direct connection for the drive and return lines for the
control valves on the pneumatic engine:
• Inspiratory Flow Valve
• PEEP Valve
• PEEP Safety Valve
The board routes the Supply Pressure Switch signals to the control board.
Airway Pressure Transducer The PEB includes a +5VA regulator to power the airway pressure transducer
circuitry. The circuits provide EMI filtering, signal amplification, and
buffering.
71
00
C
ON
TR
OL
B
OA
RD
CO
NN
EC
TO
R
FLOW VALVE
CONNECTOR
PEEP VALVE
SAFETY VALVE
LOW SUPPLY PRESSURE
SWITCH CONNECTOR
PATIENT
AIRWAY
PRESSURE
TRANSDUCER
AM
PLIFIER
EMI
FILTER
VOLTAGE
REGULATOR
BUFFER
PRECISION
VOLTAGE
REFERENCE
FLOW_DR
FLOW_RET
/SUPPLY_LOW
SUPPLY_LOW_RET
PEEP_DR
PEEP_RET
SAFETY_VLV_DR
SAFETY_VLV_RET
P_PAT
12V_10VA+5VA
AB
.4
3.
09
7
2 Theory of Operation
1006-0836-000 02/03 2-19
2.5 Mechanical Subsystems
Refer to:
• Figure 9-3, “Aestiva 7100 anesthesia machine pneumatic diagram,”
• Figure 9-4, “Aespire 7100 anesthesia machine pneumatic diagram,”
in section 9 for the complete pneumatic/mechanical subsystem.
The mechanical subsystem includes:
Pneumatic Engine
• Drive gas inlet filter
• Supply gas pressure regulator
• Inspiratory flow control valve
• PEEP valve; PEEP safety valve; Pressure sense switch
• Mechanical Overpressure Valve (MOPV)
• Bleed resistor
• Free breathing valve
Exhalation valve
Breathing circuit flow sensors
Bellows assembly
2.5.1 Supply Gas Supply gas (can be selected from O2 or Air) is supplied from the anesthesia machine
at a pressure of 241 to 690 kPa (35 to 100 psi). This supply gas is filtered through the
2-micron filter to remove any minute particles of contaminate. The filter does not
significantly lower the output pressure on the downstream side of the filter.
2-MICRON
INLINE INLET
FILTER
SUPPLY GAS
35-100 psi
Coarse side up
Smooth side up (under plate)
Aestiva Engine Aespire Engine
7100 Anesthesia Ventilator
2-20 02/03 1006-0836-000
2.5.2 Pressure
Regulator
The pressure regulator is a non-relieving pressure regulator that regulates high
pressure filtered supply gas, oxygen or medical air, down to 172 kPa
(25 psi).
2.5.3 Inspiratory
Valve
The inspiratory control valve is cycled by the control board to supply drive gas to the
outer chamber of the bellows assembly at a rate determined by ventilator settings and
sensor signals. The control valve modulates the incoming 172 kPa (25 psi) drive gases
to an output from 0 to 70 liters per minute at pressures ranging from 0 to 100 cm H2O.
REGULATOR
25 psi
2-MICRON
INLINE INLET
FILTER
SUPPLY GAS
35-100 psi
TEST
POINT
0-70 L/min
REGULATOR
25 psi
2-MICRON
INLINE INLET
FILTER
SUPPLY GAS
35-100 psi
TEST
POINT
INSPIRATORY
CONTROL
VALVE
To PEEP
SAFETY
VALVE
2 Theory of Operation
1006-0836-000 02/03 2-21
2.5.4 Exhalation
(PEEP) Control
The exhalation valve contains an elastomeric diaphragm that is used to control the
pressures in the breathing circuit.
The exhalation valve is normally open. When the exhalation port is open, gas flows
from the bellows housing to the scavenging port. Approximately
2 cm H2O of pilot pressure is necessary to close the valve. Pilot control of the
exhalation valve is done with PEEP Control Valve (A), Supply Pressure Switch (B),
and the PEEP Safety Valve (C).
Figure 2-13 • Exhalation manifold
BLEED RESIST0R
EXHALATION
VALVE
BREATHING CIRCUIT
BELLOWS
EXHAUST TO
SCAVENGING
SYSTEMREGULATOR
25 psi
INSPIRATORY
CONTROL
VALVE
VENT TO
ROOM AMBIENT
ATMOSPHERE
2-MICRON
INLINE INLET
FILTER
SUPPLY GAS
35-100 psi
PRESSURE
RELIEF
FLOW
TEST
POINT
MECHANICAL
OVERPRESSURE
RELIEF
110 cm H2O
ATMOSPHERE
FREE BREATHING
CHECK VALVE
PEEP
SAFETY
VALVE
PEEP
CONTROL
VALVE
SUPPLY
PRESSURE
SWITCH RESERVOIR
A C
B
7100 Anesthesia Ventilator
2-22 02/03 1006-0836-000
2.5.5 Bleed
Resistor
The bleed resistor is a “controlled leak” from 0 to 10 L/min in response to circuit
pressures from 0 to 100 cm H2O. The small quantity of pneumatic flow exhausting
through the bleed resistor permits control of the exhalation valve's pilot pressure by
modulation of the valve output. The bleed resistor exhausts only clean drive gas and
must not be connected to a waste gas scavenging circuit. The output is routed away
from the electrical components to make sure that systems using oxygen drive gas meet
the 10VA limitation requirement for oxygen enrichment.
2.5.6 Bellows
Pressure Relief
Valve
The Bellows assembly is the interface between drive gas and the patient circuit in the
breathing system. The pressure relief valve (or pop-off valve) in the bellows assembly
limits pressure in the patient circuit. Excess fresh gas is discharged through the
exhalation valve into the gas scavenging system.
The Bellows Pressure Relief Valve (PRV) is normally closed, maintaining
approximately 1.5 cm H2O in the breathing circuit in a no flow condition, enough to
keep the bellows inflated. It is piloted closed during inspiration and remains closed
until the bellows is refilled during exhalation. If the pressure in the patient circuit
exceeds 4 cm H2O, the pop-off valve opens to exhaust excess fresh gas flow at a rate
up to 4 L/min.
BLEED RESIST0R
VENT TO
ROOM AMBIENT
ATMOSPHERE
PEEP
SAFETY
VALVE
PEEP
CONTROL
VALVE
SUPPLY
PRESSURE
SWITCH RESERVOIR
EXHALATION
VALVE
BREATHING CIRCUIT
BELLOWS
PRESSURE
RELIEF
FLOW
2 Theory of Operation
1006-0836-000 02/03 2-23
2.5.7 Mechanical
Overpressure
Valve
The Mechanical Overpressure Valve (MOPV) is a mechanical valve that operates
regardless of electrical power. It functions as a third level of redundancy to the
ventilator's pressure limit control functions, supplying pressure relief at approximately
110 cm H2O.
2.5.8 Free
Breathing Valve
The ventilator is programmed to supply a specified number of breaths per minute to
the patient. If, in between one of these programmed cycles, the patient needs a breath
(spontaneous), the free breathing valve permits the patient to inhale. The free breathing
valve is closed on mechanical inspiration.
R INSPIRATORY
CONTROL
VALVE
TEST
POINT
MECHANICAL
OVERPRESSURE
RELIEF
110 cm H2O
ATMOSPHERE
FREE BREATHING
CHECK VALVE
R INSPIRATORY
CONTROL
VALVE
TEST
POINT
MECHANICAL
OVERPRESSURE
RELIEF
110 cm H2O
ATMOSPHERE
FREE BREATHING
CHECK VALVE
7100 Anesthesia Ventilator
2-24 02/03 1006-0836-000
2.5.9 Breathing
Circuit Flow
Sensors
Two flow sensors are used to monitor inspiratory and expiratory gas flow. The
inspiratory flow sensor is downstream of the breathing system inspiratory check valve.
Feedback from the inspiratory transducer is used to supply tidal volumes that make
allowances for the effects of fresh gas flow and circuit compressibility. The expiratory
flow sensor is located at the input to the breathing system expiratory check valve.
Feedback from the expiratory flow sensor is used to supply signals for the expiratory
tidal volume monitoring.
INSPIRATORY
O2 % MONITOR
EXP
FLOW
XDUCER
INSPIRATORY
02%
BULKHEAD
CONNECTOR
PATIENT
LUNG
EXPIRATORY
FLOW
,SENSOR
INSPIRATORY
FLOW
SENSOR
DRAIN
CABLE TO
VENTILATOR
CONTROL
MODULE
AIRWAY
PRESSURE
SENSE
FLOW
SENSOR
MODULE
EXPIRATORY
CHECK VALVE
INSPIRATORY
CHECK VALVE
(MIA/VMB)
INSP
FLOW
XDUCER
AB
.4
3.
14
6
To/From Bag/Ventilator
To Absorber
From Fresh Gas Flow
From Absorber
To Airway Pressure Gauge/Transducer
Note regarding ABS:
In the Aespire breathing
system, moisture formed in
the circuit module is drained
directly into the absorber
canister.
1006-0836-000 02/03 3-1
3 Post-Service Checkout
In this section 3.1 Post-service checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
3.1.1 Test the 7100 ventilator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
3.1.2 Test the anesthesia machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
7100 Anesthesia Ventilator
3-2 02/03 1006-0836-000
3.1 Post-service checkout
After servicing the 7100 ventilator, perform the following service mode Calibrations:
• O2 Calibration
• Zero Flow and Airway Sensors
• Adjust Drive Gas Regulator
• Airway Sensor Span
• PEEP Valve Calibration
• Inspiratory Valve Calibration
• Pressure Sensitivity
Then, you must complete the checkout procedure for the entire machine:
• the 7100 ventilator (refer to Section 3.1.1)
• the anesthesia machine (refer to Section 3.1.2)
• and all the accessories and options.
w WARNING You must perform all post-service checks after maintenance or service of
the ventilator. Failure to do so may result in patient injury.
w WARNING All components and accessories must be connected correctly. All hoses
and cables must be properly connected before returning the anesthesia
machine to clinical use. Failure to do so may result in patient injury.
3.1.1 Test the 7100
ventilator
Perform the Preoperative Checkout Procedure that applies:
• in Part 2 of the Aestiva/5 7100 User’s Reference Manual.
• in Part 2 of the S/5 Aespire User’s Reference Manual.
3.1.2 Test the anesthesia
machine
The 7100 ventilator is an integral component of the Aestiva or the Aespire anesthesia
machine.
To be certain the ventilator is functioning correctly, test the entire system.
For the proper checkout procedures, refer to the following document that applies:
• the Aestiva Anesthesia Machine Technical Reference Manual.
• the Aespire Anesthesia Machine Technical Reference Manual.
1006-0836-000 02/03 4-1
4 Tests and Calibration
wwww WARNING: Post-Service Checkout is required after you complete this section. You must
perform Section 3.1 Post-service checkout after performing any maintenance,
service or repair. Failure to do so may result in patient injury.
In this section To ensure proper operation, the7100 Ventilator includes several tests that run
automatically (self tests) and a series of menu pages that a qualified service person can
use to test, calibrate, or troubleshoot ventilator related components in the anesthesia
machine (Service Mode).
4.1 Self tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
4.2 Service Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
4.3 About Ventilator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
4.4 Alarm Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
4.5 Error Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
4.6 Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7
4.7 User Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-8
4.7.1 Screen Contrast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-8
4.8 System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-9
4.9 Calibrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
4.9.1 O2 Calibrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
4.9.2 Zero Flow and Airway Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
4.9.3 Adjust Drive Gas Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
4.9.4 Airway Sensor Span . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
4.9.5 PEEP Valve Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
4.9.6 Inspiratory Valve Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
4.9.7 Pressure Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
4.9.8 Service Calibrations Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
4.10 Diagnostic Tests/Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23
4.10.1 Display A/D Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24
4.10.2 Display Discrete I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26
4.10.3 Display Battery Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-27
4.10.4 Test Panel Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28
4.10.5 Valves - Test Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-29
4.10.6 Test CPU and Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30
4.10.7 Test EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31
4.10.8 Test Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-32
4.10.9 Test 5V Fail Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33
4.10.10 Test Inspiratory Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34
4.10.11 Test PEEP Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-35
4.10.12 Test PEEP Safety Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36
4.10.13 Breathing System Leak Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-37
4.10.14 Test Pressure Limit Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-38
4.11 Upgrade Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-40
7100 Anesthesia Ventilator
4-2 02/03 1006-0836-000
4.1 Self tests The 7100 Ventilator software includes self tests that determine whether or not
the operating software is functioning properly and whether or not the electronic
circuits on the circuit boards are functional.
The self tests include:
• powerup tests
• continuous tests
• periodic tests
Powerup tests The following list of the tests run at powerup:
