Datex-Ohmeda Anesthesia Delivery Unit S/5, Technical Reference Manual

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Troubleshooting A-FGC1
B-64
Document No. 8502854
Vaporizer
failure.
FGC safe state
after 2 minutes.
O
2
zero error O
2
flow measurement zero
point drift 500 ADC. Note: Error
applies from Main SW version
6.1 and 7.1
O
2
flow measurement failure. Replace the O
2
flow measurement zeroing valve.
Check the O
2
flow measurement unit.
x
Vaporizer
failure.
FGC safe state
after 2 minutes.
Sg zero error Sidegas flow measurement
zero point drift 500 ADC. Note:
Error applies from Main SW
version 6.1 and 7.1
Sidegas flow measurement failure. Replace the sidegas flow measurement unit Zeroing
valve.
Check the mixer flow measurement unit, sidegas.
x
Vapouriser
failure
FGC Mixer 0
unstab.
Zero value not stable during
zeroing
1) Leaking zeroing valve.
2) Faulty flow transducers. 1) Check the mixer zeroing valves and flow
transducers
x
Agent % not
delivered
Decr.flow.
FGC Insuffic.
agent
The measured ratio is
continuously smaller than the
set ratio and agent
proportional valve drive is at
maximum (>4000).
1) The required concentration is out of
reach at the current total flow and
cassette temperature.
2) Agent proportional valve is fully open
or stuck closed i.e. not cap-able of
increasing the agent flow due to an
agent channel occlusion or valve failure.
1) Decrease total flow or anaesthetic concentration
2) Check the agent proportional valve operation
and vaporizer maximum output.
x
N
2
O supply
pressure
lost
Measured N
2
O supply pressure
is below 2.4 bar
N
2
O supply pressure has decreased. 1) Increase the pressure.
Fresh gas
unit
failure
Safe state Safe state: The AA and N
2
O
deliveries are interrupted. The
gas selection valve is switched
to Air position.
Major electronics or flow measurement
failure.
Message is always related to other
failure.
1) See related messages. x
Message in
Normal
Screen
Message in
diagnostic
page
Error condition Possible cause Recommended
action
Err
log