Grounding Continuity - GE Medical Systems LOGIQ ?200 Service Manual

GE MEDICAL SYSTEMS
REV 3
7–3–2

Grounding Continuity

Electric Shock Hazard. The patient must not be contacted to the equipment during this
test.
Measure the resistance from the third pin of the attachment plug to the exposed metal parts of the case
(ILLUSTRATION 7–2). The ground wire resistance should be less than 0.2 ohms.
GROUND PIN
Meter Procedure
Follow these steps to test the ground wire resistance.
Turn the LOGIQ a200 unit OFF.
1.
2. Plug the unit into the meter, and the meter into the tested AC wall outlet (Refer to ILLUSTRATION 7–2).
3. Plug the black chassis cable into the meter's "CHASSIS" connector and attach the chassis cable clamp to an
exposed metal part of the LOGIQ a200 unit (Refer to ILLUSTRATION 7–2).
4. Set the meter's "FUNCTION" switch to the RESISTANCE position.
5. Set the meter's "POLARITY" switch to the OFF (center) position.
6. Measure the ground wire resistance and keep a record of the results with other hard copies of PM data kept
on site.
CAUTION
CONSOLE
OHMMETER
GROUND CONTINUITY TEST
ILLUSTRATION 7–2
7–6
LOGIQ a200 SERVICE MANUAL
2138853
ACCESSIBLE METAL PARTS
1. Monitor Housing
2. Rear Panel Connector
3. Any Caster/Wheel Support
PERIODIC MAINTENANCE