GE Voluson 730Expert Service Manual page 315

GE H - K
EALTHCARE RETZTECHNIK
D 105899, R
IRECTION EVISION
10-7-4 Grounding Continuity
Electric Shock Hazard. The patient must not be contacted to the equipment during this test
CAUTION
!! CAUTION:
Measure the resistance from the third pin of the attachment plug to the exposed metal parts of the case.
The ground wire resistance should be less than 0.2 ohms.
Reference the procedure in the IEC60601-1-1.
GROUND PIN
Lacquer is an isolation barrier! Resistor may be high-impedance!
CAUTION
Measure only on blank parts, stated in
!! CAUTION:
10-7-4-1 Meter Procedure
Follow these steps to test the ground wire resistance.
1.) Turn the Voluson® 730Expert unit OFF.
2.) Connect one of the Ohmmeter probes to the tested AC wall outlet (Ground pin).
3.) Using the other Ohmmeter probe, touch the exposed metal part of the Voluson® 730Expert unit.
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 and record the ground wire resistance.
3 DRAFT (A
OHMMETER
Figure 10-2 Ground Continuity Test
Chapter 10 - Care & Maintenance
29, 2008)
PRIL
Figure 10-2 above.
V ® 730E
OLUSON XPERT
S
ERVICE
ACCESSIBLE METAL PARTS
Potential equilibrium connector
(BT03)
M
ANUAL
10-15