5-30
The flowmeter float
indicates inaccurate value
or remains unmoved.
The float flowmeter is
damaged.
Replace the float flowmeter.
The knob of the flow
regulator gets loose.
The flow regulator is
damaged.
Replace the flow regulator.
The O2-NO link system is
ineffective.
The O2-N2O chain linkage of
the flow regulator is damaged.
Replace the flow regulator.
N2O supply cannot be cut
off in case of O2 supply
failure.
The O2-N2O cut-off valve is
damaged.
Replace the O2-N2O cut-off valve
assembly.
5.3.3.1 Leak Test of the O2 Flush Button Assembly
Perform a leak test of the O2 flush button assembly by using the following tools:
Negative pressure ball (quantity:1)
3106-06-00 adapter connector (quantity:1)
PU tube (6X100) (quantity:1)
Test procedures:
1. Turn off the pipeline gas supplies and bleed the residual pressure through O2 flushing.
2. Pull out No.52 PU tube which connects the O2 flush button assembly to the ACGO
assembly. The end of the tube which connects the O2 flush button assembly is not
pulled out but the other end is.
3. Flatten the negative pressure ball to remove the gas inside. Then re-install the gas
outlet switch of the negative pressure ball properly. Connect the other end of the
negative pressure ball to the pulled-out tube through 3106-06-00 adapter connector.
4. Release the negative pressure ball as shown below. If the negative pressure ball is fully
expanded within 30 s, it indicates that the O2 flush button assembly is damaged.
Handle this problem as described in the troubleshooting table.
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