Spacelabs qube 91390, Service Manual, Page: 58 / 160

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Q U B E
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A I N T E N A N C E
3 Check that the resistance is less than 500 milliohms (0.5 ohms).
Chassis Leakage Current Tests
1 Plug the leakage analyzers into mains power.
2 Plug the equipment into the AC receptacle on the analyzer.
3 Verify that the leakage current from the chassis to ground is less
than the values in
Table 4-2 on page 4-4.
Patient Lead Leakage Current Tests (Patient Modules)
For patient lead leakage test instructions, refer to the service manual
of the specific module or modules you use.
Preventive Maintenance
A Spacelabs Healthcare Field Service Engineer or qualified hospital
biomedical technician checks the monitor and optional equipment
for acceptable performance and electrical safety. Checks are done
to make sure that the monitor and option equipment operate
according to current requirements.
Touchscreen Calibration
In the event the touchscreen becomes difficult to use or a
replacement has been installed, calibrate it. Calibrate by using the
calibration function in the
Biomed menu.
To perform touchscreen calibration
1 Attach a mouse.
2 Power ON the monitor and wait for the monitor to pass the self
tests.
3 Click (or touch) the Monitor Setup key.
4 Click (or touch) the Privileged Access key.
5 Enter the Biomed password (default is biomed).
6 Click (touch) Biomed Setup .
7 Click (touch) Touchscreen Calibration .
Table 4-2 Enclosure Leakage Test Conditions and Limits
Neutral
Condition Ground
Condition
Polarity
International
Limit
U.S. Limit
Closed neutral Closed ground Normal polarity 100
μ
A 300
μ
A
Open neutral Open ground Normal polarity 500
μ
A 300
μ
A
Closed neutral Open ground Normal polarity 500
μ
A 300
μ
A