Maintenance Procedures; Replacing Lamp; Cleaning Light Channel And Prism - ADB F-Range L-850C Manual

F-Range Type L-850C Style 3 Inset Lights

3. Maintenance Procedures

Replacing Lamp

Cleaning Light Channel and
Prism
 2006 ADB Airfield Solutions, Incorporated
All rights reserved
This subsection describes the following maintenance procedures:

replacing lamp


cleaning light channel and prism

 retorquing mounting bolts

removing L-868 base water

lifting optical unit out of base
 testing for leaks
WARNING: Turn off the circuit before replacing lamp(s).
Failure to observe this warning may result in personal injury,
death, or equipment damage.
WARNING: Allow time for the unit to cool. High interior
temperatures may cause severe burns to personnel. Failure to
observe this warning may result in personal injury.
The preferred method of maintaining the F-Range inset light is to
periodically and systematically replace the light assembly and return
the replaced assembly to the maintenance shop for renovation. As
an alternative, you can service the light assembly in the field. It is
recommended, however, that field servicing be limited to cleaning
lenses and replacing lamp(s).
NOTE: If any lamps are out, record the location of the fixture and
replace the lamp when the circuit is turned off.
Refer to Replacing Lamp and Filter in the Repair section for lamp
replacement procedure.
To clean the light channel and prism, perform the following
procedure:
1. See Figure 2-1. Use a suitable fiber brush to remove all
accumulated debris from the light channel (4).
96A0285D
Issued 04/13
Maintenance
Page 4-2