Vidicode APRESA Installation Manual page 67

It is easy to replace a failing power pack.
First step is to locate the failing power pack. The failing one is identified by a off (not burning)
green LED on the power pack housing. This LED is on when a power pack is functioning fine so the
one with the LED off is the failing one that must be replaced. Remove the mains power cord from
the failing power pack and then use the pull-out handle bar and release the locking (or screw) slide
to take the failing power pack out. Note that the failing power pack may have a hot surface, so
please be care full.
Insert (and mechanically lock) the new power pack and turn the power switch of this unit to 'O'
(off). Then insert the mains power cord to the new power pack. Turn the power switch of the new
power pack to' I ' (on). The green LED should turn on and the whole RPSU is in restored to the safe
redundant state.
To take the full advantage of the RPSU, connect the 2 mains power cables to different fused power
groups. By doing this the APRESA system remains stable and powered when a fuse is blown in the
building and one power group is going down.
APRESA INSTALLATION MANUAL VIDICODE ©2012 67