Installation of the mains power
The mains power must be installed as close as possible to the unit and must be easily accessible. The
power supply lead is used as the master switch.
Free board slots
It is essential that empty board slots are guarded with the appropriate expansion slot
covers for full electromagnetic shielding, the safety of people working nearby (in the presence
of hazardous voltages) and the prevention of fire propagation (from inside the unit).
Lead and Lithium batteries
There is a risk of explosion if the batteries are incorrectly replaced. Only use batteries of
identical type, or manufacturer recommended equivalents. Discard used batteries according to
the battery manufacturer's instructions.
Power supply
Due to the presence of hazardous voltages, the rear metal panel can only be removed by
qualified personnel.
If it is necessary to carry out work on a power supply unit, first disconnect the mains cable from the
system as well as any external EPS48 power connections that may be connected. Then remove the
rear metal panel of the power supply block and disconnect the batteries.
High leakage current
A permanent earth connection is essential before making TRT/TNV-3 telecommunication
network connections.
In the case of a poor earth connection, it is MANDATORY to disconnect the telecommunications
accesses before reconnecting the equipment to earth. It is then necessary to verify that all the
connections have been made correctly.
Before removing any board that provides access to a telecommunications network of
class TRT/TNV-3, make sure you disconnect the links. Reconnect the links once the board is re-
inserted.
Installation of DECT bases
For further information on recommendations relating to the exposure of the public to the
electromagnetic field, refer to "Installation of DECT bases".
Chapter
1
General Presentation
3EH21123USAA - Ed. 01 - April 2017 - Installation Manual 12/207
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