5 Troubleshooting
5-20
05/04 1006-0453-000
Pres/Vol
Mon Inactive
User Alarm
Outlet selection switch
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.
Pressure
Limit Switch
Failure
(
4.X
)
Minimum
Monitoring
A pressure safety switch
activated at a Paw <90
cmH
2
O and Pmanifold
<80 cmH
2
O.
Ventilate manually.
Monitoring is still
available. Extreme
control combinations
may cause this alarm.
Check control settings.
Refer to Troubleshooting Flowcharts
(Section 5.5.5,
“High intrinsic PEEP
troubleshooting”
)
Replace O2
Sensor
low
Sensor connected
O
2
< 5%
Verify O
2
calibration has been done correctly.
Does calibration pass?
If calibration does not pass, replace O
2
cell.
If there is still a calibration problem, replace
the SIB board.
Alarm condition becomes false.
Schedule
Service Cal
low
1. Replaced CPU board
2. Calibration data
corrupted
Perform all calibrations in service mode.
Select gas
outlet
medium
Patient breathing
detected in ACGO -- 3
breaths detected in a
30 sec window
Check ventilator settings and ACGO switch
position.
User presses the alarm silence switch.
Service
Calibration
User Alarm
Internal calibrations are
necessary for maximum
accuracy.
The system is
operational.
Service Mode:
• Perform all calibrations
4.X
- Refer to Section 4a.3.24
3.X
- Refer to Section 4b.10
Software
Error
Minimum
Shutdown
(6)
Ventilator malfunction.
Ventilate manually.
Monitoring is not
reliable.
Replace:
• Software
• CPU board
Software
Operating
System Error
Immediate
Shutdown
Ventilator malfunction.
Ventilate manually.
Monitoring is not
reliable.
Replace:
• Software
• CPU board
Software
Watchdog
Failure
(7)
Minimum
Shutdown
(6)
Time-out or incorrect
code executed
Replace the CPU board.
Sustained
Airway
Pressure
(7)
Minimum
Shutdown
(6)
Paw > 100 cm H
2
O for
10 seconds.
Check tubing for kinks, blockages,
disconnects.
Calibrate the flow sensors.
If persists, check:
• bellows pop-off
• exhalation valve
• SIB
Message
Alarm type/
Priority
Enabling Criteria
Alarm Condition
Service Repair
Removal Criteria
Summary of Contents for Aestiva 7900 SmartVent
Page 1: ...Aestiva 5 7900 Anesthesia Ventilator Technical Reference Manual ...
Page 44: ...Notes 2 28 05 04 1006 0453 000 ...
Page 82: ...Notes 4a 36 05 04 1006 0453 000 ...
Page 116: ...Notes 4b 34 05 04 1006 0453 000 ...
Page 150: ...Notes 5 34 05 04 1006 0453 000 ...
Page 158: ...Notes 6 8 05 04 1006 0453 000 ...
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