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A
MAIN
BREAKER
240V
ON
ON
TURN
MAIN
BREAKER
OFF
Figure 3-8. Light Switches and Breaker
NOTE: If an indicator light does not turn on, see
Troubleshooting
or contact a GMASD.
NOTE: The lights require a warm up period of 5-15
minutes before they reach full output. If the lights are shut
down, they require a cool down period of approximately
ten minutes before they can be switched on again.
NOTE: The light tower uses four 1,100W bulbs. When
checking or replacing the bulbs, wipe them with a clean
cloth to avoid leaving any grease, oil residue or
fingerprints on the glass. Any residue can create a hot
spot on the bulb, causing premature bulb failure.
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.
Auxiliary Outlets
See
Figure
3-9. The control panel is equipped with multiple
receptacles for running accessories or tools from the gen-
erator. Power is supplied to the receptacles any time the
engine is running and the main circuit breaker and the
receptacle circuit breakers are switched to the ON (I)
position.
Should the main breaker, or any of the individual circuit
breakers trip, remove some of the load to the receptacles
before turning them back on.
Each receptacle has an individual circuit breaker, located
inside the cabinet under a flip-up cover. Each circuit
breaker correspond with the receptacle directly below it.
With all of the lights off, the full generator output may be
used with the receptacles.
Owner's Manual for Mobile Light Tower
B
C
BALLAST INDICATOR LIGHTS
I
I
I
I
ON
ON
ON
ON
O
O
O
O
LIGHT SWITCHES
GLOW
PLUG
OFF
INDICATOR
RUN
GLOW
PLUG
START
DC
BREAKER
004625
(000278)
NOTE: To ensure proper grounding, anytime the
generator is providing power to any equipment or load
panels that does not have a grounded plug, a ground
wire MUST BE added between the equipment and the
grounding stud (A) on the receptacle panel per the
National Electrical Code (NEC), state, and local
regulations.
Figure 3-9. Auxiliary Outlets
Wet Stacking
The unit is powered by a diesel engine. Diesel engines
are susceptible to wet stacking if lightly loaded. Wet
stacking occurs when an engine is run at less than 30%
of its full load capacity, causing unburned fuel to
accumulate in the exhaust system. Wet stacking can be
detected by continuous black exhaust when the unit is
under a constant load. It can also cause fouling of
injectors and buildup on engine valves. Diesel engines
operate properly when applied loads are between 30%
and 100% capacity. Appropriate generator sizing is
determined by the anticipated load. If the unit is in a wet
stack condition, load the unit heavily for five hours or until
the exhaust is clear.
Voltage Regulator
Units are equipped with an electronic voltage regulator.
The voltage regulator controls the output of the generator
by regulating the current into the exciter field. The voltage
regulator is adjusted before shipment from factory.
Contact Generac Mobile for additional information before
attempting to adjust the voltage regulator.
Engine Derating
All units are subject to derating for altitude and
temperature. Derating reduces the available power for
operating tools and accessories connected to the outlets.
For every increase in 1000 ft (305 m) of elevation, engine
performance for this unit typically drops between 2% and
4%. Also, engine performance decreases about 1% for
every 10ºF (5.6ºC) increase in ambient air temperature
over 72ºF (22ºC).
Operation
A
004664
17
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Table of Contents
Troubleshooting
