25
Commonly-encountered Problems
Failure description Possible cause Recommended action
The
alarm
[Check
Flow Sensors] is
displayed.
1. The expiratory/
inspiratory check valve
and its seal are not
installed properly.
2. The fl ow sensor is
installed improperly or
damaged.
3. Other part of the
anesthesia machine
malfunctions.
In case of this problem, judge
the actual gas delivery volume
to the patient by observing
the graduation on the bellows
housing. If it is abnormal, apply
manual ventilation. After the
operation, take the measures
below to remove the problem.
1. Clear water or other liquids
built up inside the fl ow sensor in
the breathing system.
2. Check if the fl ow sensor
is installed properly and if its
sealing components are in good
condition.
3. Recalibrate the fl ow sensor.
4. Check the membrane inside
the fl ow sensor for distortion. If
there is, replace the fl ow sensor
and calibrate again.
5. Check if the expiratory/
inspiratory check valve and its
seal are installed properly. If
necessary, use a new one and
reinstall it.
6. If the problem persists
after taking all the mentioned
measures, apply manual
ventilation and contact us
promptly.
The alarm [Volume
Monitoring Disabled]
occurs.
1.ACGO is switched
on.
2. The fl ow sensor
malfunctions.
1. Switch off ACGO.
2. If the sensor malfunction
related alarm is detected, apply
manual ventilation and contact us
promptly.
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