- 33 -
Operating Manual Xenotest
®
220/220+
6
Start up
6.4 Changing optical filters
WARNING – electrical shock!
Touching live parts can lead to life threatening elec-
trical shock. The lamp ignition of the instrument is
under high voltage. Disconnect the instrument from
the main power supply before installing/removing
the xenon lamp!
• Turn the instrument off at the ON/OFF switch
• Pull the main power supply plug out and secure it to
prevent reconnection
• Check whether the instrument is voltage free
CAUTION – danger of burns!
The components of the lamp unit get very hot and
can cause burns when they come into contact with
the skin. Let the components of the lamp unit cool
down sufficiently before changing the xenon lamp!
NOTE – handling the filter discs
Residue from finger prints can burn into the filter discs and
cause uneven light radiation. Wear clean cotton gloves
for assembly.
Removing the filter assembly:
1. Remove the exhaust air components (see sect. 6.3)
2. Pull the contact socket off the lamp
3. Remove the lamp covering
4. Remove the filter assembly from the exhaust air shaft
carefully. Make sure that the xenon lamp is not dam-
aged.
NOTE – xenon lamp
The xenon lamp does not need to be removed when
changing the filter.