DOCUMENT 1136
REV. G
Instruction Manual
Pro APF Series LED
ICAO TCL, IHP, & STP
10
9.6. Connect the light unit lead(s) to the isolation transformer(s)
.
Clean the mounting flange area of the light
base. Install the light unit into the light base per section 8.4.
9.6 Pressure Test
A light unit should be subjected to a 140kpa (20-psi) air pressure test to verify that it is waterproof
whenever it has been opened or components have been replaced. A tire valve style pressure fitting is
located on the bottom of the inner cover. Pressurize the unit to 140kpa (20-psi) then place it in a tub of
water or use a soap solution to locate escaping air bubbles. Carefully inspect the areas around the lens,
inner cover seal, and feed-through adapter for leaks. Relieve the internal air pressure before installing the
light unit or attempting to repair a leak.
WARNING:
WARNING
Do not exceed 140 kPa (20-psi) when pressure testing the light unit. Serious
injury and/or permanent damage to the light unit may result if a higher air
pressure is used. Once the pressure test is complete, be sure to relieve the air
pressure.
9.7 Power Supply Replacement
CAUTION:
CAUTION
Power supply is hot when light unit is energized and remains hot for a short
time after light unit is turned off.
Refer to section 10 to determine the appropriate replacement kit for your light unit.
Remove and secure
power to the light unit.
Separate the optical assembly from the light base by 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 inner cover to the light housing. Disconnect the power supply leads from the feed-through
terminals and LED module and arctic kit, if applicable.
For P1 light units, remove the three power supply bracket screws. Remove the power supply bracket with
attached power supply. Remove the three power supply screws and discard the old power supply as an
electronics assembly. Configure the jumper settings for the new power supply per Table 1. Reconnect internal
cables per appropriate wiring diagram, Figure 7 through Figure 10.
IMPORTANT:
