ETC Unison DRd Dimming Rack Enclosure - Manual (Page 22)

18 DRd Enclosure Installation Manual
Prepare the DRd Enclosure
All terminations are accessible from the front of the enclosure. Reference “Wire Routing
and Specification”, page 8 for conduit access specifications.
Prior to conduit installation you should remove the power supply access panel for clear
access to the top of the DRd enclosure. Reference “Remove the DRd Power Supply/
Dimming Engine Access Panel” below.
Take the opportunity before roughing in your conduit to change your DRd for split phase
operation (100/120V AC enclosures only) if required. Reference “Modify Phase Bus for
120V AC Split Phase Operation”, page 19 .
Remove the DRd Power Supply/Dimming Engine Access Panel
Remove the power supply/dimming engine access panel to allow for better access in the
top of the DRd enclosure while roughing in conduit and cable.
Step 1: Loosen the two captive screws that secure the access panel.
Step 2: Gently pull the panel straight down until the top of the access panel is clear of the
enclosure.
Step 3: Tilt the supply access panel away from the enclosure.
Step 4: Disconnect the three cables that are attached to the unit.
a: For the cable bundle on the left side, squeeze the tabs on either side of the
connector and gently pull the cable until it is free from the unit.
Step 1
Step 4.a
Step 4.b
Step 4.c
The enclosure door
has been removed
from this graphic for
clarity of this
procedure.