ADJUSTMENTS AND
MAINTENANCE
UT-MT-0972_1.0_19-09-2022 (EN)
Use and Maintenance Manual
LED PAPI 66
28
4.4
Replacement of the Led MODULE assembly
Before carrying out any intervention on the fixture, cut off all external power sources and
place appropriate work-in-progress warnings on the systems.
Wait for the discharging time (at least 5 minutes) and check using appropriate instruments
that there are no residual energies before accessing the electrical equipment.
The replacement procedure of the LED module is valid for both the LED sources (rear RED/upper WHITE).
Remove the upper cover of the fixture and access the LED module (see related paragraph in the chapter
“ADJUSTMENTS AND MAINTENANCE”).
Before disconnecting and removing the LED module, mark the position of the 4 edges of the
heat sink on the optical box, in order to fasten the replacement module in the same position,
to avoid the risk of misalignment of the light beam.
If necessary, replace the gasket below the heat sink of the LED module.
