Checking The Protective Ground Wires - Sirona ORTHOPHOS XG 3Dready Service Manual

7.14 Checking the protective ground wires

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7.14
Checking the protective ground wires
DANGER
Shock hazard! It is essential that you switch the X-ray unit OFF before
replacing any components!
Switch OFF the line voltage at the main switch of the building installation.
Disconnect the power cable and the second protective ground wire from
the building installation.
Remove the following cover parts (see section 1.13):
– Profile cover (10)
– Tube assembly cover, front (65)
– Tube assembly cover, rear (70)
Measuring setup for protective ground wire test
A
Ammeter
Power source
Measuring points B-E
B
C
D
E
~
A
Measuring point
central ground wire
Voltmeter
V
D3352.076.01.26.02 09.2016
Tab 7
59 38 399 D3352