DOCUMENT 1331
REV. C
Instruction Manual
PRO APF Series LED
Inset Runway Guard Light L-852G
21
Turn the optical assembly upside down and remove the four screws holding the inner cover to the
light housing. Disconnect the power supply leads from the feed-through terminals and LED module.
On P2 units, disconnect the contact closure cables from the power supply. For units with an arctic kit
(heater), disconnect the heaters’ power and temperature sensor cables form the power supply.
Remove the three power supply bracket screws. Remove the power supply bracket with attached
power supply. Discard the old power supply and bracket as an electronics assembly. New power
supply will come as a sub assembly of the power supply, power supply bracket, and Bluetooth board
assembled from the factory. Configure the jumper settings for the new power supply per Figures 7, 8
and 9.
IMPORTANT:
IMPORTANT
The jumpers must be placed in the correct position(s) for proper operation
of the appropriate fixture.
Apply thermal grease to the mating surface of the new power supply and secure the power supply
bracket using 3 #10, 2-piece lock washers, torque the three bracket mounting screws to
25-30in-lb.
Connect the ends of the LED cables to the expansion board. Inspect the feed-thru terminal for signs of
corrosion. Replace feed-thru assembly per Section 10.7 if corrosion is found. Inspect/replace the
optical housing’s O-ring gasket per Section 10.5. Assemble the inner cover onto the light housing.
Tighten the mounting screws to
30 in-lbs.
Perform a pressure test as described in Section 10.10.
Connect the light unit lead from the isolation transformer. Clean the mounting flange area of the light
base. Secure the light to the base per Section 9.1.
10.9.4 Resetting a IRGL power supply’s E-Prom
This process is required to reset to power supply’s e-prom for detecting the number of LEDs that
could be out, based on the LED’s forward voltage it will be used with. This is best accomplished
in your maintenance facility following safe electrical practices during the reprogramming of the
power supplies, as
dangerous currents
will be present on exposed connections when the power
supply is energized.
DANGER:
DANGER
Lock out electrical power to the IRGL power supply prior to
reprogramming jumper set-up, and after reprogramming during removal
of programming jumper.
