7-3
Whether the sample gas return port is connected or sealed.
b) Check whether the components are installed in place:
Whether the gas module watertrap is installed in place;
Whether the absorber canister is installed in place;
Whether the bottom sealing cover of the absorber canister is installed in place;
Whether the bypass module is installed in place;
Whether the circuit is installed in place;
Whether the inspiratory and expiratory locking nuts are lose;
Whether the circuit valve cover is installed in place;
Whether the water collection cup is installed in place;
Whether the O2 cell is installed in place;
Whether the vaporizer is installed in place;
Whether the VE is installed;
Whether the airway pressure gauge is installed in place;
Whether the APL valve is installed in place.
c) Clean the sealing rings:
Absorber canister and bypass sealing washers;
Bypass sealing rings:
Top sealing ring of the bypass module;
Sealing ring for the bottom sealing cover of the absorber canister;
Sealing ring for the handle of the absorber canister;
Sealing rings for connectors at the rear of the circuit.
2. Perform the following steps for troubleshooting until the problem is solved:
a) Check whether the breathing circuit is damaged or replace it for the leak test.
If the breathing circuit is damaged, replace it. If the test succeeds after the replacement,
the problem is solved.
b) Remove the sampling connector (straight or L-shaped connector) and perform the leak test
again.
If the test succeeds, replace the sampling connector.
c) Directly connect the expiratory port to the inspiratory port through a single hose and
perform the leak test.
If the test is passed after the inspiratory port and the expiratory port are directly
connected, the breathing circuit is intact in step (a), and the problem persists after the
leak test plug is repeatedly connected, replace the circuit (refer to 11.5.2).
d) Perform the leak test without connecting the gas module or sample gas return port.
If the test succeeds:
i. Check whether the watertrap is damaged. If yes, replace it.
ii. Perform the leak test without connecting the gas module (tie the gas module
connectors of the sampling line and gas return line). If the test succeeds, replace
the gas module.
iii. Open the service door (refer to 8.1.1), tie the middle of the internal gas return silicone
tube of the machine to occlude it, and then perform the leak test.
Perform the leak test with the gas module connected. If the test succeeds, replace the
CPC gas connector (replace the AGSS assembly by referring to 11.1.14).
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