GE Datex-Ohmeda Aisys Carestation Reference Manual page 277

Error Log Entry
VAPCHK MIX CASSP
VAPCHK MIX INFLOW
VAPCHK MIXER SET
VAPCHK MIXER TEST
VAPCHK OUTFLOW LEAK
VAPCHK OUTFLOW ZERO
M1046983 04/08
Condition / Test Configuration
Mixer outlet pressure and eVap cassette
pressure do not match to within limit.
Delivered flow measured by Mixer does not
agree with the eVap Inflow flowmeter within
limit.
Test:
Mixer Flow: 0.5 l/min
Inflow Valve: On
Scav Valve: On
Outflow Valve: ON
Prop Valve: 65534
During eVap check: Mixer measured flow does
not match set.
Before start of eVap check: Mixer flow test
failed.
Mixer running 3 and 7 LPM test. All eVap valves
off.
Outflow valve leak exceeds limit
Test:
Mixer Flow: 2 l/min
Inflow Valve: On
Scav Valve: Off
Outflow Valve: Off
Prop Valve: 65534
Outflow flow values indicate Outflow Valve leak
rate.
Outflow Meter Zero Valve fails to operate
Test:
Mixer Flow: 0.5 l/min
Inflow Valve: On
Scav Valve: Off
Outflow Valve: On
Prop Valve: 65534
Verify Outflow reads at or near 0.5 l/min
Uncheck Zero Valves Auto and select Outflow
Zero – On. Verify LED comes on, valve clicks,
and Outflow reads at or near 0 ml.
7 Troubleshooting
Action/Troubleshooting
Replace:
• Flow Meter Block Assembly
• Agent Delivery Board
• Mixer
Check Mixer/eVap Inlet connection.
Replace:
• Backpressure Valve
• Flow Meter Block Assembly
• Agent Delivery Board
• Mixer
Troubleshoot Mixer.
• Disconnect eVap Inlet tube. Restart test. If the
VAPCHK MIXER TEST error recurs,
troubleshoot mixer.
• If a different error occurs, reconnect Inlet tube
and disconnect outlet tube. Restart test. If the
VAPCHK MIXER TEST recurs, replace
backpressure valve.
Replace:
• Outflow Valve (rear valve on left side of valve
block assembly as viewed from front)
Replace:
If the test fails:
• Input Flow Meter Zero Valve (right side of Flow
Meter Block Assembly as viewed from the
front)
• Agent Delivery Board
If the test passes:
• Flow Meter Block Assembly
7-95