Technical Alarms - GE Datex-Ohmeda Aisys Carestation Reference Manual

7.9 Technical Alarms

Error Log Entry
Action/Troubleshooting
+12.0V H AMPS GAS
SEL VALVES
Disconnect the flex cable from each three-way and NC gas select valves.
Measure the resistance of each valve:
• should be approximately 75Ω.
+12.0V H AMPS ALT
O2
Disconnect the flex cable from the NO Alternate O
Measure the resistance of the NO Alternate O
• should be approximately 75Ω.
+12.0V H AMPS MIXER
On the Anesthesia Board Power window (Section 12.7.2) of the PC Service App, observe that
Mixer 10VA Amps
Turn off power to the machine and disconnect the system interface harness from the Mixer.
If the
• replace the Mixer.
If the
• inspect the harnesses from the ACB to PCB and PCB to Mixer for cross connections or damaged pins.
• replace the ACB.
M1046983 04/08
The Error Log includes technical alarms and other error conditions reported by the
system.
A technical alarm, as apposed to a parameter alarm, is an alarm condition that exists
whether or not a patient is connected to the machine. Technical alarms include:
• Failed state alarms - internal problem prevents normal operation
• Ventilator failure alarms
• Vent Fail. Monitoring Only alarms
• Alternate O state alarms - caused by electronic gas mixer failure
2
Alarms that do not fit into any particular category but are technical in nature are
referred to as a Status alarms in this table.
Source table: AC = Anesthesia Computer
DC = Display Controller
EV = Electronic Vaporizer
Mixer = Electronic Gas Mixer
PC = Power Controller
Vent = Ventilator Interface
Alarm Text Condition (Basic info)
Alternate O Screen. AC detected high current to
2
the Gas Select Valves.
Alternate O Screen. AC detected high current.
2
Alternate O Screen. Status bit shows current high. Medium
2
is reported as
Mixer 10VA Amps
is now reported as
Mixer 10VA Amps
is still reported as
Priority Source Enabling Criteria
Medium
Medium
valve.
2
Bypass Valve:
2
Fail
.
OK
,
Fail
,
7 Troubleshooting
AC Fresh gas select valves
+10VA is turned On.
AC Alternate O valve
2
+10VA turned On.
AC Mixer +10VA turned
On.
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