62 14 972 D 3507
54
D 3507
.
031.01.07
.
02 11.2010
Starting up
Sirona Dental Systems GmbH
Functional test
Installation Instructions HELIODENT
PLUS
7.1.2
Protective conductor test
empty
Auxiliary devices required
● Power source
Technical data:
– No-load voltagemax. 6V.
– Short-circuit currentmin. 5A - max. 25A
● Ammeter
– Observe the current intensity of the power source
● Voltmeter
empty
Preparation
1. Switch the line voltage at the main switch of the building installation
off.
2. Remove the power cable from connector X200 on PC board DX1.
empty
Visual check
1. Check the assembly and firm seating of the ground conductor.
2. Check the main fuse (F200, F201).
3. Check the condition of the grounding strap.
ª
No damage should be evident at position (K). Slight restriction at
the position (K) of up to 20% cross-section loss is acceptable.
empty
Protective ground wire test
Explanation
This test checks the electrical resistance of conductive and exposed parts
of the X-ray unit against the protective wire connection.
Test assembly
See drawing.
WARNING
Potentially lethal shock hazard
Switch the line voltage off.
K
