Hobart 120CU20, Operation And Maintenance Manual With Illustrated Parts List

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OM-2228 / Operation and Maintenance Manual
120CU20 / Series 500120 / 400 Hz. Generator Set
October 15, 2013 Chapter 1-3
Page 3
b) Normal Engine Starting Procedures.
Engine starting procedures are outlined below. The engine’s operating controls and monitoring
instruments are illustrated in Figure 1.
CAUTION
Refer to operating instructions in the engine manufacturer’s operation manual, when
starting engine for the first time.
NOTE: The engine manufacturer’s operation manual is provided with this manual.
(1) If illumination is required, press “ LAMPS” push-button switch one time. Pressing this button
switch also activates the fuel gauge.
(2) On days when the ambient temperatures are below 60° F, press the “ENGINE HEATER” push-
button to engage the air intake heater prior to starting the engine. The light in the button will
illuminate when the intake heater is engaged (if the light does not illuminate, the engine is ready
to start) and will go off when the intake heater is disengaged, thus signifying the engine is ready
to start.
CAUTION
Never use an ether start system in conjunction with the air intake heater.
(3) Press the green “ENGINE START” push-button switch and hold until engine starts. The engine
will start at idle speed, and the green light in the “ENGINE START” push-button switch will flash
to indicate that power is available to the engine’s ECM circuit.
CAUTION
Do not attempt to bring to rated speed for at least 5 seconds after engine starts.
Damage to the starter and flywheel will result.
CAUTION
If the engine fails to start, the control system will automatically disable the starting
motor and indicate a low oil pressure fault. The emergency stop switch must be
pressed to reset the control system and allow another starting attempt. If the engine
fails to start after four attempts, an inspection should be made to determine the cause.
If the engine fires sufficiently to disengage the starter gear, but does not start, allow
the starting motor to come to a complete stop before attempting to engage the starter
again, then press the start pushbutton switch.
(4) Check oil pressure to make certain that it is normal and observe all other engine instruments for
normal operation.
(5) Allow engine to idle and warm for 3 - 5 minutes before bringing it up to rated speed.