25-6
25.6 CO
2
Tests
25.6.1 CO
2
Leakage Test
For the CO
2
module, leakage test is needed every year or when you suspect the measurement.
Follow this procedure to perform the test:
1. Connect the CO
2
module with the patient module.
2. Wait until CO
2
warmup is finished and then use your hand or other objects to
completely block the gas inlet of the module or watertrap. The CO
2
module will behave
as follows:
Sidestream: The alarm message [CO2 FilterLine Err] is displayed on the screen after
certain time. Block the gas inlet for another 30 s. If the alarm message does not
disappear, it indicates that the module does not leak.
25.6.2 CO
2
Accuracy Test
For the CO
2
module, leakage test is needed every year or when you suspect the measurement.
Tools required:
 A steel gas cylinder with 6±0.05% CO
2
and balance gas N
2
 T-shape connector
 Tubing
Follow this procedure to perform the test:
1. Connect the CO
2
module with the patient module.
2. Wait until the CO
2
module warmup is finished, and check the airway for leakage and
perform a leakage test as well to make sure the airway has no leakage.
3. Select [Main Menu]Ä—[Maintenance >>]Ä—[User Maintenance >>]Ä—enter the
required passwordÄ—[Module Maintenance >>]Ä—[Maintain CO2 >>]Ä—[Calibrate
CO2 >>].
4. Connect the test system as follows:
Monitor
Gas cylinder
Open to the air
Relief valve
Tubing
T-shape connector
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