Product Manual

30 Owner’s Manual for Mobile Generator
Operation
The unit may be equipped with cam lock connections
located below the receptacles. These receptacles
provide connection points to attach external loads to the
generator. A decal below the cam lock connections
details the proper connections for selected voltages.
Connections should be made by plugging power cables
equipped with series 16 taper nose 400A/600V cam lock
plugs into the cam lock receptacles. Secure the
connection by rotating the plug a 1/2 turn to the right.
Figure 3-7. Cam Lock Connections
A ground connection is located on the far right of the cam
lock panel. The unit must be connected to a good
earthen ground for proper operating safety. The
generator neutral is bonded to ground when it is shipped
from the factory. The bonding plate must be removed
when the generator is used as a standby power source.
Installation should be in compliance with the National
Electrical Code (NEC), state, and local regulations.
Using the Voltage Selector
Switch
1. Shut down the unit according to Shutting Down
the Unit.
2. Remove padlock from voltage selector switch
lockout device.
3. Move voltage selector switch to desired voltage.
4. Replace and lock padlock on voltage selector
switch lockout device.
5. Start the unit according to Manually Starting the
Unit or AUTO (Remote) Starting the Unit.
NOTE: Opening the voltage selector switch box while
the unit is running will activate the safety alarm and turn
off the unit.
Fine Voltage Adjustment
The fine voltage potentiometer (pot) is on the right control
panel. The pot allows for ±10% voltage.
Voltage Regulator
The automatic voltage regulator controls the output of the
generator by regulating the current into the exciter field.
The voltage regulator is adjusted before shipment from
the factory. The regulator has four screwdriver adjustable
potentiometers that may be adjusted for under frequency
roll-off (U/F), U/F dip (DIP), stability (STAB), and voltage
(VOLT). Contact a GMASD for additional information
before attempting to adjust the voltage regulator.
NOTE: For units equipped with a Marathon DVR2000E+
automatic voltage regulator, see the Marathon operating
manual provided with the unit.
Customer Convenience
Receptacles
The unit is equipped with five receptacles. The 240/
120VAC twist-lock receptacles are rated at 50A each.
The 120VAC duplex receptacles are rated at 20A each,
with ground fault circuit interrupt (GFCI) protection. The
receptacles are not routed through the main circuit
breaker. Each receptacle has its own circuit breaker,
located directly above or next to the receptacle. Each
breaker is sized to the maximum rating of the
corresponding receptacle.
006233
L1
L2
L3
N (Neutral)
G (Ground)
Black
Red
Blue
White
Green
(000157)
DANGER
Electrocution. Do not disable or modify the
connection box door safety switch. Doing so
will result in death or serious injury.
(000302)
WARNING
Electric Shock. Never change the voltage selector
switch while the engine is running or the controller
is on. Doing so could result in death, serious injury
or equipment damage.
CAUTION
(000303)
Equipment Damage. Verify voltage application
before making changes to factory settings. Incorrect
voltage applied to a load could result in equipment
damage.