Pneumatic Circuit System Problems Repair and Troubleshooting
5 - 56 046-006272-00 A7™ Service Manual
FIGURE 5-47
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 cmH2O 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 5cmH2O within 15 s, this test is passed.
B. Leak test of the flow sensor pressure sampling pipeline inside the main unit (perform this
test if test “A” fails)
1. Mount the circuit adapter test fixture onto the circuit adapter assembly.
2. Connect the Ø6 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.
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