DERATING FOR ALTITUDE
All light towers are subject to derating for altitude and temperature. Although derating should not affect the operation
of the lights, it will reduce the available power for operating tools and accessories connected to the auxiliary outlets.
Typical reductions in performance are 2-4% for every 1000 ft. (305 m) of elevation and 1% per 10º F (3-5º C) increase
in ambient air temperature over 72º F (22.2º C).
VOLTAGE REGULATION
The electronic voltage regulator controls the output of the generator by regulating the current into the exciter field.
The regulator has three screwdriver adjustable potentiometers that may be adjusted for voltage, stability and under
frequency (U/F). The voltage regulator on your unit is adjusted before shipment from the factory. Contact Magnum
Products LLC for additional information before attempting to adjust the voltage regulator.
SHUTTING DOWN
When you have finished using the light tower proceed with shut down as follows:
1. Remove any loads from the auxiliary outlets.
2. Switch the individual circuit breakers for each
light to the OFF “O” position.
3. Switch the main circuit breaker to the OFF
“O” position.
4. Turn the ENGINE START SWITCH to the
OFF position.
LOWERING THE TOWER
1. Shut down the lights and engine. Allow the lights to cool 10-15 minutes before lowering the tower.
2. Turn the upper mast winch handle to collapse the tower to it’s lowest position. Make sure the coiled electrical
cord returns to the storage tube properly.
3. Loosen the mast rotation knob and rotate the tower so the mast mounted winches face the front of the unit. The
white alignment arrow points should line up on the mast sections and the metal stop tabs should be touching.
Tighten the mast rotation knob.
4. Release the mast lock by pulling the safety pin on the mast lock and pulling the lock free. Turn the handle of
the lower mast winch until the mast spring begins to pivot the tower down. Release the mast lock and continue
to lower the tower until it rests in the cradle.
Note:
If the mast lock does not pull free, operate lower winch
slightly to relieve pressure on the mast lock.
5. After the mast is completely down, insert the cradle lock pin and secure it with the safety pin.
6. Position lights to aim at the ground. If the trailer is going to be moved, Magnum Products LLC strongly recom-
mends that the lights be removed from the mast and stowed for transportation. See REMOVING THE LIGHTS
FOR TRANSPORTATION section on page 16.
WARNING
If the mast hangs up or the winch cable begins to develop slack, STOP IMMEDIATELY! Excess
slack in the cable could cause the mast to collapse should it free up without warning. Contact an
authorized service center.
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