Cooper Hand Tools MODEL 4 LED STYLE III L-852T - Manual (Page 11)

DOCUMENT 2529
REV. E
Instruction Manual
Model 4 – Style III
Taxiway Omni-directional Light L-852T
6
A daily operation check should be made of the lighting fixture. The lights should be energized and visually
inspected. If any fixtures are out, the location of the fixture should be recorded and the unit inspected at a time
when the circuit is de-energized. (See Section 8.2)
8.9.1
Regular cleaning is necessary in order to insure that inset lighting fixtures operate at maximum efficiency.
The lens should be cleaned periodically with a soft cloth and solvent. The weather and the location of the
fixtures will dictate the regularity and type of cleaning.
8.9.2
Snowplow operators should exercise extra care not to strike the light fixtures with snowplow blades (use
rubber blades for added protection to the fixture). After snowplow removal operations, inspect all light
fixtures 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. Snowplows must NOT traverse TOL fixtures unless
they have the blades lifted clear of the fixtures; doing so may cause severe damage to the fixtures.
Recommended snow removal techniques are described in AC 150/5200-23.
8.9.3
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 fixture. To prevent this
from occurring, it is recommended that each fixture be inspected for the presence of water at least once a
month. More frequent inspection is desirable during and following rainy seasons.
8.9.4
TOL fixtures hold-down bolts should be checked for proper torque (225 - 235 in-lbs.) at least once every
three months or whenever a fixture is serviced regardless of the season. Light fixtures in and around the
Touchdown Zone area are especially 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.
8.9.5
If any fixture contains water, the water should be removed and the entire fixture cleaned and dried. Perform
a pressure test per paragraph 8.7 to locate the source of the leak. Replace the o-ring (100035-62), See
Section 8.4.