10-18 624074/07
10 Responding to alarms
Cuff high
pressure
Medium priority.
Cuff pressure larger than set cuff
pressure by more than 5 mbar for
more than 10 seconds.
Check cuff and cuff con-
nection. Check cuff control-
ler. Switch OFF cuff
controller. Maintain cuff
pressure manually.
Demo key
used up
Operator Message. The demo
option (the demo key activates
the option for 30 days) has
already been activated once.
Contact your HAMILTON
MEDICAL representative.
Disconnect
patient
Operator Message. Instruction
message during the flow sensor
calibration and tightness test.
Disconnect the breathing
circuit at the patient side of
the flow sensor.
Disconnec-
tion
High priority.
A disconnection was detected,
but tidal volume is too low
(< 200 ml) to determine whether
it is on the patient or ventilator
side.
Troubleshoot according to
Disconnection on
patient side
or
Dis-
connection on venti-
lator side
.
Disconnec-
tion on
patient side
High priority.
VTE < than 1/8 delivered tidal
volume for 2 consecutive
breaths. Disabled in the NIV
mode.
Observe the patient.
Inspect the breathing circuit
for a disconnection bet-
ween the patient and the
flow sensor, or for other
large leaks (for example, ET
tube, Bronchopleural Fis-
tula).
Disconnec-
tion on
ventilator
side
High priority.
Inspiratory tidal volume
< 1/2 VTE for 2 consecutive
breaths.
Inspect the breathing circuit
for a disconnection bet-
ween the ventilator and the
flow sensor, or for other
large leaks (for example,
patient breathing circuit,
humidifier).
Reconnect and calibrate the
flow sensor.
Remove the CO
2
adapter if
necessary.
Table 10-2. Alarms and other messages
Alarm Definition Complete these actions
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