Troubleshooting The Lights - Generac Power Systems MAGNUM MLT6SM Owner's Manual

Troubleshooting

Troubleshooting the Lights

WARNING
Burn hazard. Lamps become extremely hot
while in use. Allow 10–15 minutes for cooling
before handling or lowering mast. Touching a
hot lens or fixture can cause severe burns.
WARNING
Electrocution. Potentially lethal voltages are generated
by this equipment. Render the equipment safe before
attempting repairs or maintenance. Failure to do so
could result in death or serious injury.
Problem
Light fixture is too hot
Faulty lamp connection
Lamp broken
Loose lighting
connections
Mast lights off,
Damaged or loose
checking outside
electrical cord
the control box
Faulty fuel filter
Faulty generator
capacitor
Loose lighting
connections
Generator output
incorrect
Mast lights off,
checking inside the
Low transformer output
control box
Fixture and/or lens is
dirty
Lamp worn due to
normal use
Damaged or loose
Mast lights on but electrical connections
the light output is
Generator output
low
incorrect
Low transformer output
46
(000278)
(000187)
Possible Cause
Allow light to cool 10–15 minutes before restarting.
Verify lamp is tight in the socket.
Inspect for broken arc tube or outer lamp jacket, broken or loose components
in lamp envelope, or blackening/deposits inside tube.
Inspect the connections inside the mast junction box and each mast light
housing/socket.
Inspect the mast electrical cord for damage and check the cord connections
inside the control box.
With engine running and lights off, measure voltage and frequency at the
GFCI receptacle. Voltage should indicate 120VAC ± 5%, and frequency
should indicate 60.7 Hz ± 5%. If frequency and voltage are both low
(<114VAC, <58 Hz), replace the fuel filter.
Measure the capacitance of the generator capacitor. If measurement is
outside rating (as indicated on the capacitor), replace the capacitor.
Inspect the connections inside the control box and inside each ballast box.
Check the incoming voltage to the ballast by checking the available voltage on
the GFCI receptacle. Incoming voltage should be 120V ± 5V. If voltage is
incorrect, the generator may require service.
The voltage from the transformer should read approximately 400VAC as the
light "strikes" (induces an arc), then drop and slowly rise back up to stabilize at
240-260VAC. On hard wired models, remove the mast junction box cover and
insert the wire probes into the connector blocks for the light and ground. If
proper voltage is not achieved, perform capacitor check to determine if the
capacitor or coil needs to be replaced.
Clean reflective surface inside fixture and both inside and outside surface of
glass lens. Use mild soap and water to clean lens. Other chemicals may have
an adverse effect on the glass.
Replace lamp.
Inspect the mast coil cord, mast junction box, and mast light connections.
Check the incoming voltage to the ballast. Incoming voltage should be 120V ±
5V. If the voltage is incorrect, the generator may require service.
The voltage from the transformer should read approximately 400VAC as the light
"strikes" (induces an arc), then drop and slowly rise back up to stabilize at 240–
260VAC. On hard wired models, remove the mast junction box cover and insert
the wire probes into the connector blocks for the light and ground. If proper
voltage is not achieved, perform capacitor check to determine if the capacitor or
coil needs to be replaced.
IMPORTANT NOTE: Only a qualified electrician
should troubleshoot or repair electrical problems
occurring in this equipment. Contact Generac Mobile
Products Technical Service at 1-800-926-9768 for
assistance if you have any questions, or if problems
persist.
Solution
Owner's Manual for MLT6SM/6SK Light Tower