Lens Replacement; Feed-Through Replacement - Eaton CROUSE-HINDS Series Instruction Manual

The groove was designed to be wider than the O-ring. This provides room for
NOTICE
9.4

Lens Replacement

If a lens is broken, leaks, or is badly pitted or scarred, it must be replaced. It is highly recommended that
this task be performed in a clean shop environment. Lens replacement kits contain all necessary parts to
change a lens. Arctic kit replacement kits include replacement lenses for units with arctic kits. Refer to
Section 10 to determine the appropriate replacement kit for your light unit.
Remove and secure power to the light unit.
removing the two bolts. There are two pry slots in the optical housing to help separate the optical assembly from
the light base. Disconnect the light unit lead(s) from the isolation transformer(s). Turn the optical assembly
upside down and remove the four screws holding the spacer ring and inner cover to the optical housing.
Disconnect the power supply lead(s) from the LED modules. Remove the two screws holding the light reflector
and LED board to the block heat-sink. Carefully remove the LED board with reflector attached and place aside in
a clean location. Leave the heat-sink attached to the optical housing. If you are replacing an arctic kit, remove the
#6 tie-down screw which fastens the end of the arctic kit's flexible circuit heater to the optical housing. Remove
the two lens retaining bracket screws from the light housing. Remove the lens-retaining bracket and discard the
lens-retaining gasket. Firmly push the lens/boot assembly from the outside of the light housing; discard the old
lens and boot. If you are replacing an arctic kit, discard the arctic kit assembly as an electronic assembly.
Thoroughly clean the lens opening with denatured alcohol and allow it to dry. Inspect the lens opening for
scratches or pits; a damaged lens opening surface will not seal properly. Place a new lens boot over the
replacement lens. Apply a thin coat of Dow Corning FS 1292 grease over the entire outside surface of the
lens boot. Align the lens/boot assembly in the lens opening and press it into place. Verify that the lens boot
is not pinched in the lens opening. Using a new lens retaining gasket, fasten the lens retaining bracket, and
heater tie-down screw on arctic kit versions, to the light housing. Torque the lens retaining bracket
mounting screws to 6.2 – 6.8 Nm (55-60 in-lb) and the heater tie-down screw, if applicable, to 0.90-1.24
Nm (8-11 in-lb). Re-install the LED module(s) per Section 9.2. Connect the power supply leads to the LED
assemblies. Inspect/replace the optical housing's O-ring per Section 0. Assemble the inner cover and spacer
ring onto the light housing. The screw hole patterns in the inner cover and optical housing are offset to
insure proper alignment. Torque the mounting screws to 2.82-3.4 Nm (25-30 in-lb). Perform a pressure test
per Section 9.6. Connect the light unit lead(s) to the isolation transformer(s). Clean the mounting flange area
of the light base. Secure light unit to the base per section 8.3.
9.5

Feed-through Replacement

Refer to Section 10 to determine the appropriate replacement kit for your light unit.
secure power to the light unit.
Instruction Manual
Pro APF Series LED
ICAO RCL, TDZ, REX
the displacement of the O-ring when compressed between the groove on the
optical housing and mating surface on the inner cover. Properly tightened
screws are important in obtaining a complete seal.
Separate the optical assembly from the light base by removing the two
NOTICE:
Separate the optical assembly from the light base by
7
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REV. D
Remove and