Справочник Пользователя для Pelco C1458M-J

C1458M-J (9/08)

7

1. Remove the ceiling tile from the ceiling. Insert the compass tool (supplied) into the center of the tile. (If necessary, use a 3/32-inch bit to 

drill a hole.) Draw a circle on the tile using the compass tool and a pencil. Carefully cut out the circle.

NOTE: The ceiling tile cannot be thinner than 0.50-inches (1.27 cm) or thicker than 1.75 inches (4.45 cm).

Figure 4. Preparing the Ceiling Tile

2. Attach a conduit fitting (not supplied), lock nut (not supplied), and safety chain bracket. Attach to the bracket one end of a safety chain/

cable (not supplied) that will support up to 16 pounds (7.3 kg). Refer to Figure 2. Do not attach the other end of the safety chain yet.

3. Compress the spring clips on the back box and push it through the hole until the clips spring back. Tighten the screws until you hear a 

clicking noise. Reinstall the ceiling tile.

4. Remove an adjacent ceiling tile. Prepare the wiring for camera and lens power; refer to Table A and Table B in the Appendix on page 13 for 

wiring distances. Pull the wiring into the back box through the conduit fitting. Attach the safety chain to a support structure (refer to 
Figure 2 and Figure 3 on page 6). Replace the adjacent ceiling tile.

1. Install the mount for the pendant dome. Refer to the instructions supplied with the mount. If you are installing the dome outdoors, make 

sure the mount is properly sealed to keep moisture from damaging the structure to which it is attached.

2. Pull a coaxial cable for the camera through the mount. Also pull the wiring for power through the mount. Refer to Table Aand Table B in the 

Appendix on page 13 for wiring distances.

3. Pull the wiring from the mount into the back box. Apply thread compound to the threads on the back box.

4. If you are installing the dome outdoors, seal the inside of the pipe portion of the back box to prevent moisture or cold air inside of the mount 

from entering the unit and causing condensation on the dome. Use a product such as duct seal or a foam insulation spray that is available 
from an electrical supply store.

5. Screw the back box into the mount.

Figure 5. Installing Pendant Mount and Back Box