Troubleshooting The Lights - Generac Power Systems MLT6SC 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 Possible Cause
Light fixture is too hot
Faulty lamp connection
Mast lights off, Lamp broken
checking outside
the control box
Loose lighting connections
Damaged or loose
electrical cord
Loose lighting connections
Generator output incorrect
Mast lights off,
checking inside the
control box
Low transformer output
Fixture and/or lens is dirty
Lamp worn due to normal
use
Damaged or loose
electrical connections
Mast lights on but
the light output is
Generator output incorrect
low
Low transformer output
42
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.
(000278)
(000187)
Solution
Allow light to cool 10–15 minutes before restarting.
Verify that the 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.
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 engine speed may need to be adjusted or 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 correct 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 engine speed may need to be
adjusted or 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 correct voltage is not achieved, perform capacitor check to
determine if the capacitor or coil needs to be replaced.
Owner's Manual for MLT6SC Light Tower