GE Datex-Ohmeda Aisys Carestation Reference Manual page 222

Aisys
Valves - Mixer Troubleshooting
(Flowchart 16)
Valve / ACB Related Errors
+12.0V H AMPS GAS SEL VALVES
+12.0V L VOLT GAS SEL VALVES
ALT O2 SEL VALVE FAILURE
MIX FRSH GAS SLCT VLV 10VA OVR CUR
Disconnect the flex cable from the
Valve (Valves) indicated in the Error
Entry. All Mixer valves should
measure approximately 75O. Replace
valves as necessary. Ensure Flex
Cable is properly installed in J4
connection on Mixer Board.
Yes
Replace ACB
17
Flowchart
7-40
Continued from
Previous Page
Did Failure occur during POST?
Error Preceded or followed by
"MIXER POST FAIL"
No
Valve / Mixer Related Errors
MIXER XX ZERO LEAK FAIL
XX FLOW CTRL FAIL
Proportional Valve for the
Problem Continues?
No
Power-up the machine with all gases
disconnected. Bypass Checkout.
Connect all gasses. Start a case and
flow both O2 and Balance Gas.
Yes
Follow the appropriate path
based on Error Entry (Entries)
Replace Selector and
Gas indicated.
Problem Continues?
Yes
Replace Mixer
No
Problem Solved
Analyze
the logs
for new
entries
Proportional Valve Related Errors
FLOW ATTAIN FAIL XX CHANNEL
FLOW ATTAINMENT FAILURE CH1
Replace Proportional Valve for Gas
Channel indicated in Error Entry.
If problem persists, replace Mixer
Problem Continues?
No
04/08 M1046983