Pneumatic Circuit System Problems Repair and Troubleshooting
5 - 64 046-006272-00 A7™ Service Manual
Test procedures:
1. Turn off the system switch.
2. Disassemble the pre-pak assembly and remove the patient circuit.
3. Mount the pre-pak assembly.
4. Remove the seals on the two connectors of the absorb canister assembly. Connect the two
connectors of the lifting device by using two breathing tubes and one breathing tube Y
piece. The other end of the breathing tube Y piece is connected to the breathing tube
adapter connector through another breathing tube. Connect the injector connector,
pressure sensor (of the anesthesia machine calibration device) connector (positive pressure
end), and the breathing tube adapter connector to a Y piece, as shown below.
5. Push in the push rod of the injector to cause the pressure reading on the anesthesia machine
calibration device rise to 30 to 35 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 falls more than 10cmH2O within 30 seconds, it indicates that
absorb canister assembly are leaky. The test is failed. This step is required when the absorbent
canister assembly is in bypass on or bypass off status.
FIGURE 5-57 Lucer adapter connector
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