Crystal Vision
Maintenance
Indigo 2 CoolFlow User Manual R1.3
30
20/06/2012
3 Maintenance
Warning:
These servicing instructions are for use by qualified personnel only. To reduce risk
of electric shock, do not perform any servicing other than that contained in the
Operating Instructions unless you are qualified to do so. Refer all servicing to
qualified service personnel.
Refer also to the General Safety Summary in the Installation chapter.
Inserting and removing power supplies
The PSU-160i power supplies can be inserted and removed while the system is powered
without damage. However, this must be done quickly as there will be no forced convection
air, as the PSU fan assembly has to be removed.
To gain access to the Indigo PSUs proceed as follows:
Pull down the front panel using the black knobs at either side of the panel
Unplug the wiring to the front panel PCB
Release the captive screw to the left of the PSU fan. It will be necessary to use a
screw driver
Remove the fan assembly by unclipping the right side from the frame and pull
away
Note:
Take care not to damage the panel ribbon cable when removing the fan assembly.
Once the fan assembly has been unplugged from the front panel the front panel PSU FAN
LED will change from green to red. The alarm relay will also be set to the alarm condition.
Removing the PSU fan assembly
Lower PSU-160i – front view
In addition to the PSU and fan LEDs on the front control panel, there is also a red error LED
on the PSU. This LED will flash slowly.
The error LED will light up continuously if power rail levels are outside operational limits
or in the presence of a second fitted PSU-160i the power supply is unpowered or has failed.
