Pelco c1487-c operation manual Maintenance, Back BOX Electronic Assembly Removal, Dome Cleaning

BACK BOX ELECTRONIC ASSEMBLY REMOVAL

To remove the back box electronic assembly:

1.Turn off power.

2.Open the interconnect door and disconnect all wiring to the back box.

3.Use an 11/32 socket driver to remove the three 8-32 washers and nuts that hold the electronic assembly to the back box. When the screws are removed, the interconnect back box receptacle will drop down. It may be necessary to move the open intercon- nect door past 90 degrees vertical toward the side of the back box to release the door from the built-in grounding strip (and free the interconnect back box receptacle).

4.Remove the interconnect back box receptacle with the electronic components from the back box.

MAINTENANCE

DOME CLEANING

Clean the acrylic dome as necessary to maintain a clear picture. Be careful not to scratch the surfaces of the dome.

Exterior Surface - Clean the dome's exterior surface with a nonabrasive cleaning cloth and cleaning agent that is safe for acrylic. Either liquid or spray cleaner/wax suitable for fine furniture is acceptable.

Interior Surface (Except Chrome or Gold) - Clean the same as the exterior surface.

Interior Surface (Chrome or Gold) - The inside surface of a chrome or gold dome is easily scratched. Use the following precautions to maintain the dome's surface.

a.Always handle the dome from the outside of its circular flange.

b.Never touch the coated inside surface. The acid in your fingerprints will eventually etch the coating if the fingerprints are not carefully removed according to the recom- mended cleaning procedure in item “e”.

c.If dust or other contaminants accumulate on the dome's interior, remove the debris with compressed air. Compressed air cans are available from photographic equipment or electronic supply dealers.

d.If heavy residue accumulates and cannot be removed with air pressure, rinse with water and immediately dry with air pressure so that water spots will not remain. Avoid wiping the coated surface with direct hand pressure - it will easily abrade unless extreme care is taken. Once scratched, the dome cannot be recoated.

e.If internal wiping is necessary, avoid hand rubbing. Instead, make a wick as follows:

Use a very soft paper towel. Roll a section into a tightly wound tube. Tear the tube in half, and wet the fuzzy end of the wick with a solution of isopropyl alcohol diluted with water. Hold the dome with its opening facing downward and wipe the interior of the dome with the wet end of the wick. Use a circular motion, starting from the outside and spiraling into the center. Use a new wick for each two passes over the dome.

SERVICE MANUAL

If you need to service your unit, obtain a service manual in one of the following ways:

•Go to Pelco’s web site at ftp://www.pelco.com and find service manual C1455SM-B.

•Call Pelco’s DataFAX service at 1-559-292-0435 and request document 214558.

•Contact Pelco’s Literature Department and request service manual C1455SM-B.

Pelco Manual C1487M-C (7/99) 45