11
OPM-142/D
GENERATOR PROCEDURES
START UP
1. Set the manual transfer to mid or normal (up) position.
2. With the power take-off drive disengaged, start the
engine which will drive the generator. Run the engine long
enough to warm it up before proceeding, so that it will run
smoothly and achieve full power under generator load.
3. With the engine idling, engage the power take-off drive.
4. Watch the frequency meter on the generator and
slowly increase engine speed until the output reaches
approximately 62 Hz for full loads.
5. Plug load cord set into receptacle. Place transfer switch in
the emergency position.
6. Place the load circuit breaker in the “on” position. If
the breaker trips, move manual transfer switch to “off”
or normal position. Check for short circuit or grounded
connection in the load cable to the double throw switch
and repair. A breaker that trips from overload or short
circuit must be reset by moving to “off” before re-closing.
7. With engine and generator running smoothly, switch
on the electrical load while watching the frequency meter.
Adjust engine throttle to keep generator output under load
at 60 Hz. If engine is equipped with speed governor, it may
automatically readjust the throttle as the load changes and
keep the generator output at the proper level. However,
some governors are not sensitive enough to maintain
proper output under changing load, and in such cases the
throttle will have to be manually readjusted.
NOTE: EQUIPMENT DAMAGE
If the load includes motors, turn them on one at a time,
highest starting current motor first, next highest second,
etc.
SHUTDOWN
1. Switch off electrical load.
2. Reduce Speed of engine driving generator to idle.
3. Disengage power take-off drive, and allow generator to
coast to a stop.
WARNING: PERSONAL INJURY
Never try to stop the generator. Always let it coast until it
stops.
4. Shut off the engine.
5. Disconnect the drive shaft (tumbling bar) power take-off
end first, then the generator end.
