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III. Air inlet assembly:
1. Stop the gas supply. Disconnect pipeline 51 connecting to the EFCS flowmeter.
2. Connect the 1 MPa test pressure gauge to pipeline 51.
3. Switch on the pipeline air source. Record the reading on the pressure gauge. If the
deviation between this reading and the reading on the air pipeline pressure gauge
exceeds 0.2 MPa (2.0 bar), the air pipeline pressure gauge is damaged. Handle this issue
according to the fault locating table.
4. Switch off the air source and switch on the air flow regulator to release the remaining
pressure.
5. Reconnect pipeline 51.
8.4.2.2 Testing the Pressure Switch
Use the following tools to check whether the pressure switches of the O2 inlet assembly and
exhalation valve assembly are qualified:
One 1 MPa (1.0 bar) test pressure gauge
One 3106-04-06 adapter connector
One 3106-06-08 adapter connector
One 3140-08-00 Y-shape tube
Two PU tubes (8X200)
One PU tube (6X200)
One PU tube (4X200)
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