8-82
Failure Description Possible Cause Recommended Action
The O2 Supply
Failure alarm is not
generated when the
O2 pressure is too
low, and is
generated when the
O2 pressure is
within the specified
range.
The pressure switch of
the O2 supply inlet is
invalid.
Adjust the pressure switch of the O2 supply
inlet and ensure that the O2 pressure is within
0.15-0.25 MPa or near 0.2 MPa when the
alarm is generated. If the pressure switch fails
to be adjusted, replace it. For details, see
section 8.6.1.3Adjusting the Pressure Switch.
The Drive Gas
Pressure Low alarm
is not generated
when the drive gas
pressure is too low,
and is generated
when the drive gas
pressure is within
the specified range.
The pressure switch on
the integrated airway of
the expiratory valve or
PEEP safety valve is
invalid. Or, the filter on
the integrated airway of
the expiratory valve is
blocked.
Adjust the pressure switch on the integrated
airway of the expiratory valve and ensure that
the drive gas pressure is within 0.05-0.2 MPa
or near 0.14 MPa when the alarm is
generated. If the pressure switch fails to be
adjusted, replace it. If the problem persists
after the pressure switch is replaced, replace
the integrated airway of the expiratory valve.
For details, see section 8.6.1.3Adjusting the
Pressure Switch.
8.6.1.1 Testing the Pipeline Pressure Gauge and Calibrating the
Regulator
Test the pipeline pressure gauge and the regulator of the pipeline gas supply interface by using the
following tools:
1 MPa (10 bar) test pressure gauge (Before test, ensure that the 1 MPa test pressure
gauge is in good condition) (quantity: 1)
3106-04-06 adapter connector (quantity: 1)
Y-shape connector 3140-04-00
Y-shape connector 3140-06-00
PU tube (4x200) (quantity: 1)
PU tube (6x200) (quantity: 1)
Test procedure:
I. O2 supply inlet:
1. Turn off the pipeline gas source and release the remaining pressure through quick
oxygenation.
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