3 Testing and Maintenance Tests
38
Valve Test
1 Raise the pressure again to 280 mmHg.
2 Select Close valves: Off.
3 Wait five seconds and then document the value displayed. The value should be less than 10
mmHg.
4 Document the value displayed by the monitor (x4).
Sidestream CO
2
Performance Test
Allow five seconds between individual service procedures to ensure stable equipment conditions. When
certain monitor procedures are running, service procedures are not possible and trying to start them
will result in a message
Service Operation Failed in the monitor’s status line. Wait until
the monitor completes the current operation, then restart the service procedure.
This test checks the performance of the CO
2
measurement for the sidestream extension. The CO
2
performance test is required once per year and when the instrument is repaired or when parts are
replaced.
This test uses calibration equipment that you can order (see the Parts section for the part number). The
procedure is summarized in the following steps. Refer to the documentation accompanying the
equipment for detailed instructions.
Tools Required:
• Standard tools, such as screwdriver, tweezers
• Electronic flowmeter, M1026-60144.
• Gas calibration equipment:
• Cal 1 gas 15210-64010 (5% CO
2
)
• Cal 2 gas 15210-64020 (10% CO
2
)
• Cal gas flow regulator M2267A
• Cal tube 13907A
You also need a local barometric pressure rating received from a reliable local source (airport, regional
weather station or hospital weather station) which is located at the same altitude as the hospital.
The CO
2
calibration for the sidestream extension consists of the following steps:
• Barometric pressure check and calibration, if required.
Test Expected test results
Accuracy test x1 = value displayed by monitor
Difference
≤ 3mmHg
Leakage test x2 = leakage test value
x2 < 6 mmHg
Linearity test x3 = value displayed by monitor
Difference
≤ 3mmHg
Valve Test x4 = value < 10 mmHg
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