5-46
6. Push in the push rod of the injector to let the pressure reading on the anesthesia
machine calibration device rise to 70 to 90 cmH
2
O and then stop pushing. Keep the
relative position between the push rod and the injector unchanged. If the pressure
reading on the anesthesia machine calibration device does not fall more than 5cmH
2
O
within 15 s, this test is passed.
II Leak test of the flow sensor pressure sampling pipeline inside the main unit (perform this
test if test “I” fails)
1. Mount the circuit adapter test fixture onto the circuit adapter assembly.
2. Connect the Φ6 silicone tubes to the pressure sensor connector (positive pressure end)
on the anesthesia machine calibration device), injector (before mounting, pull out the
push rod of the injector) connector and the connector (one connector out of No.3
through 6 connectors on the test fixture) for the circuit adapter test fixture by using a Y
piece, as shown below.
3. Push in the push rod of the injector to let the pressure reading on the anesthesia
machine calibration device rise to 70 to 90 cmH
2
O and then stop pushing. Keep the
relative position between the push rod and the injector unchanged. If the pressure
reading on the anesthesia machine calibration device does not fall more than 5cmH
2
O
within 15s, this test is passed.
If test “I” is failed and “II” passed, it indicates that the flow sensor pressure sampling
pipeline on the patient circuit is damaged. In this case, replace the patient circuit. If both
tests “I” and “II” are failed, check the sampling lines and connectors inside the main unit,
seals and three-way valves of the circuit adapter assembly until test “II” is passed. Then
perform test “I”. If test “I” is still failed, it indicates the flow sensor pressure sampling
pipeline on the patient circuit is damaged. In this case, replace the patient circuit.
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