Pelco SD5 User Manual Page 15

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Pelco Manual C1456M-D (10/98) 15
CAUTION:
The ceiling
tile must be capable of
supporting 16 pounds
(7.3 kg) of weight. If the
ceiling tile will not support
this weight, order the
SD5-P metal panel.
CAUTION:
Be careful
not to cut outside of the
line. If you do, you may not
be able to install the back
box. Also, the trim ring
may not cover the hole.
Figure 6. Installing Back Box
Figure 7. Fastening Back Box
T-RAIL CLIP
FOR
CEILING TILE
HARD CEILING
OR
CEILING TILE
T-RAIL CLIP
FOR
CEILING TILE
HARD CEILING
OR
CEILING TILE
3.1.2 Suspended Ceiling
1. Remove the ceiling tile from the ceiling.
2. Locate the center point to drill a hole in the tile.
3. Drill a hole in the ceiling tile using a 3/32-inch drill bit.
4. Remove the compass tool from the parts bag that came with the back box
(refer to Figure 4). Press the stud of the compass tool into the hole in the
ceiling. Insert a pencil in the hole in the other end of the compass and mark a
circle on the ceiling.
5. Carefully cut the circle out of the ceiling tile.
6. Remove the conduit fitting, lock nut, and safety chain bracket from the parts
bag and attach them to the back box as shown in Figure 5.
7. Refer to Figure 6. Compress the spring clips on the back box with your hands
and push the back box through the hole in the ceiling tile. The spring clips will
spring out when they clear the ceiling tile.
8. Refer to Figure 7. Tighten the screws until the spring clips hold the back box
firmly to the ceiling tile. You will hear a clicking noise when the screws are tight.
Do not install the ceiling tile in the ceiling yet.
Proceed to Section 3.2, WIRING.
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