8-50
Test procedures:
1. Turn off the pipeline gas supplies and switch on the O2 flush switch to release the
remaining pressure.
2. Remove the PU tube 83 connecting to the auxiliary oxygen flowmeter assembly and seal
this end with the tube plug.
3. Remove the PU tube 84 connecting to the auxiliary oxygen flowmeter assembly.
Connect the negative pressure ball and then squeeze the negative pressure ball to
exhaust the internal gas.
4. Release the negative pressure ball. If the negative pressure ball is completed expanded
within 30s, the auxiliary oxygen flowmeter assembly is damaged.
8.4.3.3 Leak Test for the Backup Oxygen Flowmeter Assembly
Tools:
Negative pressure ball (quantity: 1)
3106-06-00 adapter connector (quantity: 1)
3126-06-00 tube plug (quantity: 1)
PU tube (6 x 100) (quantity: 1)
Test procedures:
1. Turn off the pipeline gas supplies and switch on the O2 flush switch to release the
remaining pressure.
2. Remove the PU tube 45 connecting to the backup oxygen flowmeter assembly and seal
this end with the tube plug.