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4.3.2 Manual Circuit Leak Test
This test checks if the pneumatic circuit has leakage in manual ventilation mode. The test items
include APL valve, check valve, CO2 absorber canister, patient tube, flow sensor, and flow sensor
connector.
The respiratory system leak test under manual ventilation mode shall be performed following the
steps below:
1. If the system is being powered on, the system automatically initiates a self-test and
enters the Manual Circuit Leak and Compliance Test screen. Or, from the main screen,
select General > Test Leak/Compliance. Select Manual Circuit Leak Test to enter the
Manual Circuit Leak and Compliance Test screen as follows.
2. Set the machine following the instructions on the screen, and then select Continue to
perform the manual circuit leak and compliance test. Progress of the manual circuit leak
and compliance test is displayed on the screen. As shown in the figure below, select
Cancel to cancel the ongoing test.
3. After the test is completed, confirm whether the manual circuit leak and compliance test
is passed following the instructions on the screen. If not, deal with it following "Help"
on the screen and the following "Note".
NOTE
If a leak exists, check whether the pneumatic circuit system leaks, and perform
troubleshooting following the information in Section 8.3 Leak and Compliance
Tests. After the fault source is repaired, second leak test shall be conducted.
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