Lamp And Filter Holder Assembly; Optional Film Disc Cutout - ADB F-Range L-850C Manual

F-Range Type L-850C Style 3 Inset Lights
4. Lamp and Filter Holder
Assembly

5. Optional Film Disc Cutout

 2006 ADB Airfield Solutions, Incorporated
All rights reserved
See Figure 2-2. The lamp and filter holder assembly (7) consists of
the lamp/filter support subassembly and the retainer spring (see
Figure 2-3, Item 6). The lamp/filter support subassembly is pre-
assembled at the factory. The retainer spring is a replaceable item
and is required only if a filter is required.
An optional film disc cutout is available as an electrical bypass device
in case of lamp failure. It closes an auxiliary circuit around the lamp
within 15 seconds after lamp failure. The film disc cutout shorts and
completes the circuit when the lamp fails. This allows the other
lamps to remain lighted in series-connected fixtures. It also prevents
excessive volt amperes on the secondary of the isolation transformer.
The film disc cutout must be replaced (if used) when the lamp is
replaced. Refer to Replacing Film Disc Cutout Assembly in the Repair
section.
CAUTION: Do not use a film disc cutout if circuit has
monitoring. This will prevent the monitoring system from
functioning properly.
96A0285D
Issued 04/13
Description
Page 2-5