Document UT-MT-0708_EN
Page 16 of 17
Edition 11/03/2014
Supersedes edition 11/14/2013
LED ELEVATED HELIPORT LIGHT LHE
INSTRUCTION MANUAL FOR USE, INSTALLATION AND MAINTENANCE
4.8
CABLE LEAD WITH PLUG
4.8.1
Removing the cable lead with plug
The replacement of the cable lead requires the fixture completely disassembled;
follow the procedures above described to replace the power supply/control PCB, to
replace the breakable coupling and the 1-inch tube.
Unscrew the grounding screw inside the body to make free the grounding cable.
Remove the cable gland from the outside of the fixture body using a double ended
deep offset ring wrench CH 20; pull out the damaged cable lead and/or the grounding
wire from the sealing insert.
4.8.2
Installing the new cable lead with plug
Replace the cable gland if damaged.
Insert a new cable lead and a new grounding wire (if necessary) into the sealing insert
at approx 8 cm from the free extremity of the cable lead. Take care that the
grounding wire end with eyelet terminal be at 3-4 cm from the cable gland.
Place the sealing insert into the relevant cable gland seat and tighten it using a
double ended deep offset ring wrench CH 20.
Reassembly with reverse procedure.
5
TROUBLESHOOTING
Problem
Possible cause
Solution
Distorted light beam
output
Broken or damaged lens
Replace lens
Weak light output
Primary loop with partial short
circuit
Check cable assembly
Defect in the isolation transformer Replace transformer
Dirty lens
Clean the light fixture
One LED of the luminous source
damaged in short circuit
Replace the LEDs board
Wrong power PCB installed
Check parts list and install the
correct PCB
