ADB L-852D User Manual

© ADB Airfield Solutions All Rights Reserved 21
2.4.2.3 Replacing a Prism on an
L-852 LED Light Assembly
Figure 12: Typical 12" L-852A, B, & C, and ICAO Straight, BI-DIR., 1 Cordset.
Assembly Shown
Follow the steps in “Replacing the Prism” on page 20 if the prism is broken or its surface is
badly pitted or scarred.
1. Remove the prism-clamp plate secured in the cover.
Discard the plate, and retain the countersunk screws.
2. Install the replacement prism-keeper plate supplied in the kit using the Phillips
countersunk screws retained from step 1. (See Figure 20) This plate holds the LEDs. Do
Not get grease on the LED surfaces or wires.
3. Apply a drop of sealant Loctite 270 or equivalent to the last threads.
4. Torque to 31 ±4 in-lb (3.5 ±0.5 N•m).
5. Connect the wires to the circuit board as shown in Figure 17.
6. Go to “Installing a New Optical Unit” on page 28 to complete the installation.
4071.50.030
GASKET SLEEVE FRC/FTZ/FTD/FEDD
4071.50.052
PRISM KEEPER PLATE
, , ,
63A0979-1
PRISM F-RANGE WIDE BEAM
63A0993-2
PRISM F-RNG NARR BM OPT GLASS
63A0986
PRISM FLAT SEAL F-RANGE
64A0936-13
SHOULDER SCREW
7080.90.335
O-RING F-RANGE FIX
TURES
44A6760-1120
44A6760-2120.
44A6760-2220.
44A6760-2320*
44A6760-1130
44A6760-1220
44A6760-1230
44A6760-2130
44A6760-2230
2
2
2
qty
2
2
Order Codes
Associated
Prism
Top Cover
Assembly
Screw

ADB L-852D Specifications

General

Brand	ADB
Model	L-852D
Category	Lighting Equipment
Language	English