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10.2.5 If any light unit contains water, the water should be removed and the entire unit cleaned and
dried. If any of the electronics have been damaged, it may not be cost effective to make a field
repair, but rather send it back to Crouse-Hinds Airport Lighting for rebuild. Perform a pressure
test per Section 10.10 to locate the source of the leak. Refer to the o-ring, lens, and power lead
sections, 10.5, 10.6, & 10.7 as needed to make repairs. After any repair, pressure test again per
Section 10.10.
10.3
Cleaning Lenses
With a compressed air blast or suitable brushes, remove all accumulated debris from the light channel.
Clean the outer lens surface with a detergent solution. If the lens is coated with a substance impervious to
the detergent, a suitable solvent should be sparingly applied with a wad of cotton or a patch of cloth on
the end of a wood splint. After the solvent has acted, the remaining solvent and softened coating should
be removed with a clean piece of cotton or cloth. Care should be taken to avoid excessive contact
between the solvent and the lens seal. Remove all remaining solvent from lens and lens seal. A gentle air
blast may be used. It is good practice to inspect for damage to the optical housing and/or water intrusion
into the unit anytime a lens is cleaned. Water droplets would be visible on the inside of the lens if
moisture had entered the unit. If it is determined that moisture has entered the unit, refer to Section 10.2.5
for possible causes and maintenance procedures.
10.4
Replacing the LED Module
The LED PCB is warm when light unit is energized and remains warm for a
NOTICE
The Warranty is void if the screws holding the L852G optical housing to the
WARNING
Refer to Table 1 to determine the appropriate LED Module for your light unit. Remove and secure
power to the fixture. Separate the Optical Assembly from the outer ring by removing the two bolts.
There are two pry slots in the optical housing to help separate the optical assembly from the
support ring. Disconnect the fixture lead from the isolation transformer. Turn the optical assembly
upside down and remove the four screws holding the inner cover to the light housing. Disconnect the
Instruction Manual
PRO AFP Series LED
Inset Runway Guard Light L-852G
NOTICE:
short time after unit is turned off.
WARNING:
inner cover are loosened or removed.
13
DOCUMENT 1331
REV. A
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