DOCUMENT 1136
REV. G
Instruction Manual
Pro APF Series LED
ICAO TCL, IHP, & STP
11
IMPORTANT
The jumpers must be placed in the correct position(s) for proper
operation of the appropriate fixture.
The heater will remain on indefinitely with the temperature sensor
disconnected.
Apply thermal grease to the mating surface of the new power supply and secure it to the bracket using the three
supplied screws. Torque the screws to 2.49-2.71 N-m (22-24 in-lb). Secure the power supply bracket. Using #10
2-piece lock washers, torque the bracket mounting screws to 2.8-3.4 N-m (25-30 in-lb).
For P2 and B1 light units, the top power supply must be removed before the power supply bracket can be
removed. Discard the top power supply as an electronics assembly. After removing and installing the bottom
power supply and mounting bracket. Configure the jumper settings for the new power supply per Table 1.
Reconnect internal cables per appropriate wiring diagram, Figures 11 through 14.
IMPORTANT:
IMPORTANT
The jumpers must be placed in the correct position(s) for proper
operation of the appropriate fixture.
The heater will remain on indefinitely with the temperature sensor
disconnected.
Apply thermal grease to mating surface of the power supply and fasten it to the power supply bracket. Torque the
top power supply’s screws to 2.49-2.71 N-m (22-24 in-lb). Reconnect the power supply(ies) to the feed-through
terminal(s) and LED assembly(ies) and arctic kit(s), if applicable. Inspect/replace the optical housing’s o-ring
per paragraph 9.3.
Assemble the inner cover onto the optical housing. The screw-hole patterns on the inner
cover and optical housing are offset to insure proper alignment. Torque the mounting screws to 2.8-3.4 N-
m (25-30 in-lb). Perform a pressure test per paragraph 9.6. Connect the light unit lead(s) to the isolation
transformer(s)
.
Clean the mounting flange area of the light base. Place the optical assembly into the light
base. Torque bolts per section 8.4.
9.8 Optional External Gasket Replacement
Every time an optical assembly with the optional external gasket is removed from the light base, the gasket
on the outside surface of the inner cover should be examined and replaced if necessary. Refer to section 10
to determine the appropriate replacement kit for your light unit. Any gasket that is stretched, torn, has a
permanent set or some other defect, will allow water to enter the light base. Remove the old gasket from the
inner cover by carefully scraping with a plastic, or comparably soft, tool. Take care not to damage the inner
cover. Form a thin bead of high temperature silicone adhesive, such as GE RTV 106, on the inner cover
sealing surface. Position the new gasket on the inner cover in the same location as the old gasket. Apply a
thin coat of Dow Corning FS 1292 grease over the entire outside surface of the gasket before placing the
optical assembly on the light base. Torque bolts per section 8.4.
9.9 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.
