Datex-Ohmeda Aestiva 7900 SmartVent Technical Reference Manual page 127

Message Alarm type/
Priority
Check Flow medium
Sensors (1)
Circuit Leak User Alarm
Audio Off
Connect O2 low
Sensor
Control Minimum
Settings Monitoring
Input Has
(8) (9)
Failed
CPU Failure Minimum
Shutdown
(6)
CPU Internal Minimum
Error Shutdown
(7)
(6)
1006-0453-000 05/04
Enabling Criteria Alarm Condition
Removal Criteria
In-range flow data No or negative flow on
available in mechanical insp sensor during
ventilation inspiration in a circle
system or negative flow
on exp sensor in
expiration
Inspiratory and/or expiratory flow sensor(s) are
connected
Two consecutive breaths measured with "correct"
flow seen by flow sensors
Control setting on the This message tells you
Alarm limit menu. that the audio alarm for
circuit leaks was turned
off.
Digital I/O signal
indicates a disconnect
Alarm condition becomes false.
Change initiated by user Internal software error
Ventilator malfunction. Ventilate manually.
Monitoring is not
reliable.
Ventilator malfunction. Ventilate manually.
Monitoring is not
reliable.
5 Troubleshooting
Service Repair
Check flow sensor connections for "No Flow
Sensor" alarm.
Check the breathing circuit
Perform flow sensor calibration.
Check insp/exp check valves.
Replace the flow sensors.
Check SIB to CPU cabling.
Replace the SIB board.
Replace the CPU board.
Is O sensor connected. If it is, replace the O
2
cable.
If problem persists, check or replace the SIB to
CPU cable.
If problem persists, replace the SIB board.
If problem persists, replace the CPU board.
Replace the CPU board.
Replace the CPU board.
Replace the CPU board.
2
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