3-7
You can either perform a manual leakage test:
1. Perform procedures 1-4 in the NIBP Accuracy Test section.
2. Raise the pressure in the rigid vessel to 250 mmHg with the balloon pump. Then, wait
for 5 seconds to let the measured values becoming stable.
3. Record the current pressure value and meanwhile use a time counter to count time. Then,
record the pressure value after counting to 60s.
4. Compare the two values and make sure the difference should not be greater than 6
mmHg.
3.2.3 Sidestream and Microstream CO
2
Module Tests
Leakage test
Follow this procedure to perform the test:
1. Plug the module into the module rack.
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 sidestream and
microstream CO
2
modules will behave as follows:
Sidestream: The alarm message [CO
2
FilterLine Err] is displayed on the screen after 3
seconds. Block the gas inlet for another 60 s. Select [Main Menu]→
[Maintenance >>]→[User Maintenance >>] → enter the required password →
[Maintain CO
2
>>]→ [Calibrate CO
2
>>], and check that the flow rate is less than.
10ml/min. The module does not leak if current flow rate is less than 10ml/min and
the alarm message does not disappear.
Microstream: The alarm message [CO
2
Purging] is displayed on the screen after
certain time. Block the gas inlet for another 30s. If alarm message [CO
2
FilterLine
Err] is shown, it indicates that the module does not leak.
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