8-65
(7) Push the pushrod of the syringe to make the pressure reading on the anaesthesia machine
calibration apparatus rise to 30-35 cmH2O. Then, stop pushing. Remain the relative
position between the pushrod and the syringe body unchanged. If the pressure reading of
the anaesthesia machine calibration apparatus decreases more than 10 cmH2O within
30s, the test fails. The bellow housing or the manual position of the Automatic/Manual
switch is leaked. (The test is not affected if you remove the breathing bag arm because
the drive gas cannot pass through the breathing bag arm.)
4. Leakage test on each tributary of the circuit transit adapter
Required tools:
One negative pressure ball
One test fixture of the circuit transit adapter
One PU tube (6X100)
Test procedures:
(1) Disable the system switch.
(2) Disable the flow regulator.
(3) Remove the breathing system.
(4) Fix the test fixture of the circuit transit adapter to the circuit adapter.
(5) Squeeze the negative pressure ball to exhaust the gas inside. Seal the outlet end of the
negative pressure ball and connect another end to interface 7 (the number is marked on
the test fixture of the circuit transit adapter) corresponding to the fresh air tributary of
the test fixture of the circuit transit adapter.
(6) Release the negative pressure ball. If the negative pressure ball is completed expanded
within 30s, the fresh air pipeline test is not passed. Locate the leakage point inside the
system according to section 1.3.3 AG Transmission System.
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