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Message
Priority
Pressure Limit Switch
Minimum
Failure
monitoring
(Medium)
Replace O
Sensor
Low
2
Select Gas Outlet
Medium
Service Calibration
Low
Software Error
Minimum
shutdown (High)
Software Watchdog
Minimum
Failure
shutdown (High)
Sustained Airway
Minimum
Pressure
shutdown (High)
Sustained Paw
High
System Leak?
Medium
Vaux_ref Out-of-
Minimum
Range
shutdown (High)
Vext_ref Out-of-
Minimum
Range
shutdown (High)
1009-0633-000
Cause
A pressure safety switch
activated at a Paw <90
cmH
O and Pmanifold <80
2
cm H
O.
2
O
% < 5%
2
Fresh gas may not flow to the
patient. Auxiliary gas outlet
is On, but flow sensors have
seen 3 breaths in patient
circuit during the last 30
seconds.
Internal calibrations are
necessary for maximum
accuracy.
Ventilator malfunction.
Ventilator malfunction.
Paw > 100 cmH
O for 10
2
seconds.
Paw > sustained pressure
limit for 15 seconds
.
c
Delivered volumes do not
match set volumes.
Ventilator malfunction.
Ventilator malfunction.
4 Alarms and Troubleshooting
Action/Concerns
Ventilate manually. Monitoring is
still available. Extreme control
combinations may cause this
alarm.
Check control settings.
Makes sure patient receives O
Does the sensor see 21% O
in
2
room air? Use different monitor.
Select the circle breathing
system or connect the patient
circuit to the auxiliary outlet.
The system is operational.
Operation continues with default
values.
Ventilate manually. Monitoring is
not reliable.
Ventilate manually. Monitoring is
not reliable.
Check tubing for kinks,
blockages, disconnects.
Check tubing for kinks,
blockages, disconnects.
Look for leaks in the breathing
system. Compare set to
delivered volumes.
Ventilate manually. Monitoring is
not reliable.
Ventilate manually. Monitoring is
not reliable.
Repair
Contact a qualified
service representative.
.
Calibrate O
sensor.
2
2
Replace O
sensor.
2
Note: the bag arm will
not ventilate a patient
at the auxiliary outlet.
Contact a qualified
service representative.
Contact a qualified
service representative.
Contact a qualified
service representative.
Calibrate the flow
sensors.
Calibrate the flow
sensors.
Calibrate the flow
sensors.
Drain water buildup
from the breathing
system.
Contact a qualified
service representative.
Contact a qualified
service representative.
4-11
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