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10.1
Cleanliness and Workmanship
Service life depends upon the entire assembly being waterproof. All surfaces must be clean, dry and free
of all foreign matter if the light unit is to operate for extended periods without requiring maintenance.
10.2
Maintenance Program
In order to insure maximum light unit life, the installed units should be subject to a maintenance program
in accordance with the following: A daily operation check should be made of the lighting unit. The lights
should be energized and visually inspected. If any units are not lit and/or partially lit, the location of the
unit, along with the pocket that is out, should be recorded for future troubleshooting. A replacement light
unit should be installed per instruction in Section 9 with the primary POWER OFF and SECURED. The
affected light unit can be troubleshot in a clean, safe working area or returned to Crouse-Hinds Airport
Lighting for repair.
The warranty is void if the screws holding the L852G optical housing to the
WARNING
10.2.1 Regular cleaning is necessary to insure inset lighting units operate at maximum efficiency. The
lens should be cleaned periodically per Section 10.3. The weather and the location of the units
will dictate the regularity and type of cleaning.
10.2.2 Inset light hold-down bolts should be checked for proper torque per section 9.1 and whenever a
unit is serviced regardless of the season. Light units in and around the touchdown zone area are
specially prone to vibration damage if the mounting bolts are not properly torqued. The mounting
surface of the light base must be clean and free of foreign matter when checking mounting bolts.
10.2.3 Snowplow operators should exercise extra care not to strike the light units with snowplow blades.
Use rubber blades for added protection to the unit. After snow removal operations, inspect all
light units to locate and replace, if necessary, any damaged light assemblies. Passes over the light
rows should be made with a power broom only if practical. Whenever snowplows must traverse
in-pavement light units, they should be traveling at less than 5 mph or have the blades lifted clear
of the unit. Recommended snow removal techniques are described in AC 150/5200-23.
10.2.4 The light is designed to exclude both ground and surface water from entering. If the lights are not
properly maintained (i.e., bolts tightened and seals in good condition) water may enter the unit.
To prevent this from occurring, it is recommended that each unit be inspected for the presence of
water at least once a month. More frequent inspection is desirable during and following rainy
seasons.
Instruction Manual
PRO AFP Series LED
Inset Runway Guard Light L-852G
WARNING:
inner cover are loosened or removed.
12
DOCUMENT 1331
REV. A
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