45
7200790 Service Manual for the HELION
®
XENION
®
Surgical Lighting System GB
14 Functional Check, Hand-Over and Customer Instruction
Figure 03
1 Insulation rings
2 Washers
3 Spring lock washer
4 M 12 nuts
Figure 04
1 Power line
2 Earthing contact
3 Measuring instrument
4 Instrument leads
Checking the ceiling tube bolt connection
• Checking the ceiling tube alignment:
-
Check the correct (vertical) alignment of the ceil-
ing tube using a spirit level.
• Checking the insulation rings, washers and spring
lock washers:
-
Check that all bolt connections on the ceiling tube
have insulation rings (1), washers (2) and spring
lock washers (3).
• Checking the ceiling tube bolt connection:
-
Check the secure grip of the fastening bolts (4) on
the ceiling tube bolt connection (torque: 45 Nm).
• Checking the electrical connections. Cables, con-
nections and PCBs:
-
Check the proper state and strength of the screw
and clamp connections on the electrical compo-
nents (mains supply, transformer, changeover PCB
etc.) and the proper state of the electrical cables
and PCBs.
Checking the potential equalisation/earthed conduc-
tor resistance
A Mobile lamp
R
imax
= 0.3 ohms
-
Measure the resistance between the earthed con-
ductor contact of the power line and all metal parts
of the lamp.
-
Enter the highest reading (max. 0.3 ohms) in the
test report.
