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Failure description Possible cause Recommended action
After the calibration
is started, the
message of
calibration failure
is displayed before
ventilation sound is
heard.
1. The pipeline supply
pressure is too low.
2. The bag/mechanical
ventilation switch is not
set to the mechanical
position.
3. The supply pressure
switch malfunctions.
4. The bag/mechanical
ventilation switch
malfunctions.
1. Check the supply pressure and
ensure that it is not lower than 0.2
MPa.
2. Check the bag/mechanical
ventilation switch and ensure
that it is set to the mechanical
position.
3. In case that the supply
pressure is normal but the alarm
[Drive Gas Pressure Low] is still
on, contact us.
4. Switch over the bag/
mechanical ventilation switch but
the ventilation status displayed
in the screen upper left corner
keeps unchanged. In this case,
contact us.
After the calibration
is started, the
message of
calibration failure
is displayed shortly
after ventilation
sound is heard.
1. The fl ow sensor in
the breathing system is
not installed properly.
2. The check valve
assembly in the
breathing system is not
installed properly.
3. The fl ow sensor
malfunctions.
1. Check the fl ow sensor and the
related sealing components for
improper installation.
2. Check the check valve
assembly and the related
sealing components for improper
installation.
3. Replace the fl ow sensor and
calibrate again.
4. If the problem persists
after taking all the mentioned
measures, contact us.
After the calibration
is started, the
ventilation sound
is heard. After the
calibration lasts
about 3 minutes,
the system prompts
calibration failure.
During calibration,
the gas supply or the
breathing tubes are
interfered so that the
calibration data are not
correct.
1. Remove the problem that the
tubes are pressed. Calibrate the
fl ow sensor again by following
calibration procedures.
2. If the problem persists after
multiple calibrations, contcact us.
Flow Sensor Calibration
In case of fl ow sensor calibration failure, refer to the following table for
troubleshooting.
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