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in-lbs. Connect the ends of the LED cables to the new 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
Power Supply Troubleshooting and Replacement
10.9.1 Visual Inspection
If a light unit is under warranty, please contact Crouse-Hinds Airport Lighting for assistance. DO
NOT open the unit. If the unit is opened, the warranty is VOID. If the warranty period has
expired and troubleshooting is required, follow the steps below to find the root cause.
Replacement parts will be required for testing of the different components of the light unit.
Follow the steps in Section 10.4 to open the fixture. Verify all the wires are not pinched or
damaged and that the wire insulation is intact. Verify the input AC is connected to the feed-thru
(see Figure 1 below). Verify the power supply connections and appropriate jumper setting per
Figures 7, 8 and 9.
AC INPUT
CONTACTS
HEATER CONTACTS
(WIRE JUMPER MUST BE
INSTALLED ON FIXTURES
WITHOUT HEATERS)
Instruction Manual
PRO APF Series LED
Inset Runway Guard Light L-852G
LED DRIVER
Figure 1: Power Supply Assemblies With Option 1
17
DOCUMENT 1331
REV. C
HEATER
SENSOR
JUMPERS
OPTION 1
BLUETOOTH
BOARD
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