7.0 Troubleshooting
In the table below, a number of problems are listed in the first column. In the second column, you will find the possible causes
of the problem and in the third column the solution:
CAUTION
Before attempting to service, de-energize and lockout the series circuit or the regulator so that the fixture can not be
energized by remote means.
Problem
Possible cause
Solution
Lamp does not energize.
Lamp defective
Replace lamp.
Loose or broken contact or connector
Tighten or replace the contacts or connector.
Moisture present in fixture
Open up and dry, inspect lens for cracks.
Check the gaskets.
Check that the drainage hole, in the bottom of the
optical cartridge, is not obstructed.
Deteriorated wire insulation
Replace wires.
Defective isolation transformer
Check transformer secondary current (in short-circuit)
with true RMS Ammeter.
Short lamp life
(UEL-1-150): Too high current (lamp will have black
burns)
Check output current of isolating transformer at full
brightness. Current should not exceed 6.7 A.
Replace transformer if defective; if not, adjust CCR
output current.
Moisture in assembly
Open up and dry, inspect lens for cracks.
Check the gaskets.
Check that the drainage hole, in the bottom of the
optical cartridge, is not obstructed.
Defective lamp or lamp bulb touched with bare fingers
(lamp interior will have a yellow-white powdery
appearance if air has entered through a hole or crack)
Replace lamp.
UM-4020 / AM02-630e, Rev. 2.0, 2020/05/19
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