Installing A Power Supply Unit - Aastra OpenCom 510 User Manual

Installation

4.4.5 Installing a Power Supply Unit

Depending on the number of installed modules (interface cards), either one or
two power supplies are required (see A and B in the illustration OpenCom 510: 1-12
frame slots on page 26):
■
The power supply unit for group 1 (A) must always be installed. It supplies the
central control module and the interface cards in slots 1 - 6.
■
The power supply unit for group 2 (B) is required if interface cards are to be
installed in in slots 7 - 12.
If you want to deinstall the second power supply unit or exchange a defective one,
proceed as follows:
1. Shut down the OpenCom 510. To do so, first restart the system by
– entering the code procedure
telephone, or
– clicking on Restart in the SYS Configuration: Restart menu in the Configu-
rator.
2. Wait until the LEDs of the installed modules start flashing red.
DANGER!
3. Unplug all of the mains cables of the OpenCom 510 to disconnect the system
from the mains supply.
Power supply units must not be installed if the OpenCom 510 is switched on!
Refer to Notes on Disconnecting the Mains Supply starting on page 28.
4. Unpack the power supply unit.
H*185
Hazardous voltages inside the device!
Installing Modules
#
(system PIN) on a connected
33