Winco HPS9000VE/E - Manual (Page 12)

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OPERATING SPEED
The engine-generator must be run at the correct
speed in order to produce the proper electrical volt-
age and frequency.
CAUTION: EQUIPMENT DAMAGE
The output voltage should be checked to insure
the generator is working properly prior to connecting
a load to the generator. Failure to do so could result
in damage to equipment plugged into the unit and
possible injury to the individual.
All engines have a tendency to slow down when
a load is applied. When the electrical load is con-
nected to the generator, the engine is more heavily
loaded, and as a result the speed drops slightly. This
slight decrease in speed, together with the voltage
drop within the generator itself, results in a slightly
lower voltage when the generator is loaded to its full
capacity than when running no load. The slight varia-
tion in speed also affects the frequency of the output
current. This frequency variation has no appreciable
effect in the operation of motors, lights and most ap-
pliances. However, electronic equipment and clocks
will be affected if correct RPM is not maintained. See
Load vs. Output chart.
Although individual units and models vary slightly, the
normal voltage and frequency of the engine-genera-
tor described in this manual are approximately as
follows, under varying loads:
LOAD VS. OUTPUT
Generator
Load
Speed
(RPM)
Frequency
(Hz)
Voltage
None 3690 61.5 125V
Half 3600 60.0 120V
Full 3510 58.5 115V
The speed of the engine was carefully adjusted at
the factory so that the generator produces the proper
voltage and frequency. For normal usage, the speed
setting should not be changed. If the generator
is being run continuously on a very light load, it is
often advisable to lower the operating speed slightly.
Reference “D” below is the speed adjustment for this
engine.
CAUTION: EQUIPMENT DAMAGE
SPEED ADJUSTMENTS SHOULD ONLY BE
MADE BY A QUALIFIED SERVICE TECH.
Whenever making any speed adjustments, check
the unit with a voltmeter and a frequency meter
or tachometer and be sure the voltage and speed
are correct.
Lower voltage may damage both the generator and
any load connected to it. Running the engine at ex-
cessively high speeds results in high voltage, which
may signifi cantly shorten the life of appliances being
used.
Output voltage should be checked periodically to
ensure continued proper operation of the generat-
ing plant and appliances. If the generator is not
equipped with a voltmeter, it can be checked with a
portable meter.
CONNECTING THE LOADS
APPLYING THE LOADS
Allow the engine to warm up for two or three minutes
before applying any load. This will allow the engine
to reach normal operating temperature and oil to cir-
culate throughout the engine. A short warm-up time
will permit the engine to work more effi ciently when
the load is applied and will reduce the wear in the
engine, extending its life.
Receptacles have been provided to allow loads to
be connected to the generator. The loads should
be added one at a time. If a large motor is being
started; or multiple motors are being started, they
should be started individually and the largest should
be started fi rst.
D