Safety Checks; Checking The Protective Ground Wires - Sirona Orthophos XG 3D/Ceph Installation Manual

9 Safety checks
9.1 Checking the protective ground wires
76
9

Safety checks

9.1

Checking the protective ground wires

DANGER
General - Ground wire test
Perilous shock hazard!
It is essential to switch the unit off and to wait at least one more 1 minute
before beginning the check!
1. Switch the line voltage off at the main switch of the building
installation.
2. Disconnect the power cable and the second protective ground wire
from the building installation.
3. Remove the "bottom profile", "front tube assembly", and "rear tube
assembly" covers.
Measuring setup for protective ground wire test
Measuring setup - Ground wire test
A Ammeter
B Power source
C Measuring point A, central protective ground wire
D Voltmeter
E Measuring points B - E
Sirona Dental Systems GmbH
Installation Manual ORTHOPHOS XG 3D / Ceph
A
A B
D
V
B
C
E
D
E
D3352.031.05.08.02 10.2015
A
C
63 03 452 D3352