64 95 142 D3632
84
D3632
.
031.01.02
.
02 03.2016
9 Safety checks
Sirona Dental Systems GmbH
9.1 Checking the protective ground wires
Installation Manual ORTHOPHOS SL
9
Safety checks
9.1
Checking the protective ground wires
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
DANGER
Perilous shock hazard!
It is essential to switch the unit off and to wait at least one more 1 minute
before beginning the check!
A
Ammeter
B
Power source
C
Measuring point A, central protective ground wire
D
Voltmeter
E
Measuring points B - E
A
B
C
D
E
A
C
A
B
쓓
V
D
E
