Operation
26
Owner’s Manual for MLT4200IF4 Light Tower
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 Regulation
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
regulator has three screwdriver adjustable
potentiometers that may be adjusted for voltage, stability
and voltage roll-off (U/F). The voltage regulator is
adjusted before shipment from the factory. Contact
Generac Mobile Products LLC for additional information
before attempting to adjust the voltage regulator.
Customer Convenience Outlets
See
Figure 3-6
. The unit is equipped with six
convenience outlets for powering accessories or tools
from the generator. Power is supplied to the outlets any
time the engine is running and the main circuit breaker is
switched ON (I). Each outlet has an individual circuit
breaker, located behind the outlet panel.
Figure 3-6. Location of Outlets
See
Figure 3-6
. The circuit breakers are labeled with the
corresponding voltage for the receptacle they protect.
With all of the lights OFF, full generator power output is
available to the receptacles.
NOTE:
All equipment or load panels connected to the
generator MUST be properly grounded. If these
appliances do not have grounded plugs, a ground wire
MUST be added between the equipment and the
grounding stud on the receptacle panel per the National
Electrical Code (NEC), state, and local regulations.
Remote Start Terminal Block
See
Figure 3-7
. The remote start terminal block (A) is
located near the control panel and provides a connection
for installation of a remote start switch which will allow the
unit to be started by a remote dry-contact closure switch.
Before entering AUTO mode, verify that the contacts on
any remote switch linked to the unit are OPEN. If the
contacts on a remote switch are closed, the engine will
crank and start when AUTO mode is entered. Attach the
switch leads to the two unused terminals on the unit’s
remote start terminal block. For more information, refer to
Auto (Remote) Starting of the Unit
.
Figure 3-7. Remote Start Terminal Block
Transfer Switch
When the unit is used as a standby power supply, it must
be equipped with a transfer switch which isolates it from
the utility’s distribution system. A transfer switch is
designed to transfer electrical loads from the normal
power source (utility) to the emergency power source
(generator) when normal voltage falls below a prescribed
level. The transfer switch automatically returns the load
back to the normal source when power is restored back
to operating levels.)
A
240V/30A Twist-lock
B
120V/20A GFCI
C
240V/50A Twist-lock
Breakers Located
Behind The Panel
A
C
B
006983
003984
A
(000226a)
Phase rotation must be compatible.
Incompatible phase rotation could result
in equipment damage, death or serious injury.
WARNING
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