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Connect flow sensor
alarm.
Alarm Message:
Connect flow
sensor.
Flow sensor cable not
connected to ventilator.
If sensor connected, both
heated wires broken.
Connect flow sensor cable and
recalibrate flow sensor. Refit
sensor into patient circuit. If to
be used without sensor press
“Continue without flow” and set
breath trigger sensitivity.
Remove sensor from patient
circuit. Discard the flow sensor.
Fit new flow sensor and
recalibrate.
Refit sensor into patient circuit.
If no replacement sensor
available press “Continue
without flow” and set breath
trigger sensitivity.
Cannot calibrate
flow sensor alarm.
Alarm Message:
Flow Calibration
Fail.
Flow sensor defective. Remove sensor from patient
circuit. Discard the flow sensor.
Fit new flow sensor and
recalibrate.
Refit sensor into patient circuit.
If no replacement sensor
available press “Continue
without flow” and set breath
trigger sensitivity.
Calibrate flow
sensor alarm.
Alarm Message:
Calibrate Flow
Sensor.
New sensor connected to
ventilator.
Carry out calibration routine.
Fit sensor into patient circuit.
User interface
failure alarm.
Alarm Message:
User interface
failure.
Internal hardware reset has
occurred.
Remove ventilator from service.
If generated whilst connected to
a patient, remove patient to
alternative form of ventilation
Note alarm message and refer
ventilator to qualified service
personnel.
Symptom Possible Cause Remedy
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