Checking The Protective Ground Wires - Sirona GALILEOS Service Manual

Sirona Dental Systems GmbH
Service Manual GALILEOS
61 25 665 D3437
D3437.076.01.15.02 06.2012
10.8

Checking the protective ground wires

Checking the protective ground wires
General - Ground wire test
DANGER
Potentially lethal 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", "top tube assembly", and "bottom
tube assembly" covers.
Measuring setup - Ground wire test
Measuring setup for protective ground wire test
A Ammeter
B Power source
C Measuring point A, central protective ground wire
D Voltmeter
E Measuring points B - E
10.8 Checking the protective ground wires
A
A B
D
V
B
C
E
D
E
10 Maintenance
A
C
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