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Preparations, Installation of the Case
When opening the case cover you are in need of the supplied special
tool. Push the special opener tool into the opening as shown in
and pull the handle a little bit to the front. Now open the case by pulling
the special opener tool to the top away from the case. The cover is
pulled to the top at the same time. Slide the cover (app. 15 cm) so that
you are able to take off the case vertically from the bottom casing with-
out obstacle.
ATTENTION: The case may be only opened by authorized
1
personnel
.
e
Please pay attention to the fact that the plug must always be pulled out
while opening the case. Touching the voltage leading conductor tracks
or the telephone connections may be danger to life. During operation
certain modules may produce dangerous ringer voltage.
The plastic cover above the power supply unit serves as a touching pro-
tection against dangerous voltage and must not be removed. The
charging electrolytic capacitor of the switching power supply unit may
be loaded for a long time after being switched off in case of a failure.
1. Authorized personnel: These are persons that are trained for this purpose (e.g.
certified electricians). They must have the necessary knowledge about the
work in areas with potentially hazardous voltage. They must also have the
knowledge about the latest electrical safety standards and requirements.
Preparations, Installation of the Case
Open the Case
Pic. 1: Unlock
Pic. 1
Casing Cover
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