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Freeway Range
Pro-Bel ltd
3 Installation
During the installation process it is important to observe the following
points:
•
do not obstruct the vents on the unit to allow cooling to take place
•
remove shipping brackets
• 3.1 Door removal
The frame has a horizontally hinged front panel door that can be opened by
turning the knob anti-clockwise. The door can be removed from the frame by
opening it approximately 45
(,
and lifting upwards. It will not disconnect from the
hinge at a greater angle.
For correct re
-fitting
of the door, ensure that it is centrally located on the hinge.
• 3.2 Power supply removal
There are two power
supply
modules used for main and backup
.
For EMC and
safety reasons the mains, chassis and signal earths are permanently connected
together with the module
.
A green LED on each PSU indicates the status of the power supply. PSU relay
alarms are also fitted.
The power supply modules are push fit into the frame and each secured by two
screws on the rear of the frame.
When replacing the power supply the following recommendations must be
observed:
•
always disconnect the mains from the unit before removal or during repair
•
the securing screws should always be fitted before connecting the mains to
provide essential chassis earthing
Note
:
The
Freeway
PSU automatically adapts to the voltage range supplied. There
is no need to set a mains voltage selector position.
A
WARNING:
The screws form an essential chassis connection for
ili
EMC compliance and must not be omitted
6540T-00 Nov 97
16
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