Winco HPS9000E - Manual (Page 9)

Page 7 60707-112 HPS 12/97
OPERATOR CARE AND MAINTENANCE
LOAD vs. OUTPUT
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Generator Frequency Voltage
Load Speed 120V
Applied* (RPM) (Hz) Recpt.
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None 3750 62.5 129V
Half 3600 60.0 120V
Full 3540 59.0 115V
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*Portion of plant’s rated output current.
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. Whenever making any
speed adjustments check the unit with a voltmeter or
tachometer and be sure the speed is correct.
Lower voltage may damage both the generator and any
load connected to it. Running the engine at excessively
high speeds results in high voltage, which may
significantly shorten the life of appliances being used.
Output voltage should be checked periodically to ensure
continued proper operation of the generating plant and
appliances. If the generator is not equipped with a
voltmeter, it can be checked with a portable meter.
Frequency can be checked by using an electric clock with a
sweep second hand. Timed against a wrist watch or a
stop watch the clock should be correct within +/- 2 seconds
per minute.
CONNECTING THE LOADS
Applying The Load
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 circulate
throughout the engine. A short warm-up time will permit
the engine to work more efficiently 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 first.
Plug your tools such as drills, saws, blowers, sump pump
and other items to be powered directly into the generator
receptacles. Before plugging in all the tools and cord sets,
recheck the rating of the generator set. Be sure it can
handle the intended load and is compatible with the
voltage, phase, and current ratings.
CAUTION: EQUIPMENT OVERLOAD
Keep the generator load within the generator and
receptacle nameplate rating. Overloading may cause
damage to the generator and/or the loads .
Most electric tools and appliances will have the voltage and
amperage requirements on their individual nameplates.
When in doubt consult the manufacturer or a local
electrician. The nameplate amperage rating for electric
motors can be misleading. See “Starting Electric Motors” in
Unit Capabilities (page 3).
These engine generator sets are inherently self regulating
based on engine speed. The engine governor will
automatically adjust itself to the load. No harm to the
generator will result if it is operated with no load connected.
Proper utilization of the receptacles located on the control
panel is necessary to prevent damage to either the
receptacles or the generator. The generator is a limited
source of electrical power, therefore pay special attention to
the receptacle and generator ratings.
WIRING
‘Hard Wiring’ this unit directly into a temporary construction
site electrical system or into a home as a back up is NOT A
SIMPLE DO-IT-YOURSELF JOB. For your safety all wiring
must be done by a qualified electrician and conform to the
National Electric Code and comply with all state and local
codes and regulations. Check with local authorities before
proceeding.
These generators come equipped with a 4 wire 120/240
volt receptacle designed to power both 120 and 240 volt
loads. There are 2 hots, a neutral, and a ground wire
connection, in the 4 wire 120/240 volt receptacle
(L14-30R). This receptacle is protected by a double pole
circuit breaker rated for generator output.
CAUTION: EQUIPMENT DAMAGE
Caution must be used when loading the generator,
overloading either of the 120 volt side will cause the
breaker to trip disconnecting all the loads
TEMPORARY SITE'S ELECTRICAL SYSTEM
To connect these units directly to an un-powered, isolated
construction site TemPower panel, have your electrician
connect to the control panel using a 120/240 volt, four wire
twist-lock plug (L14-30P). The use of locking receptacles
and locking plugs provides the convenience of quick
disconnect, for moving, while allowing non electrical
workers to safely reconnect the power. In addition they
prevent the plug from being accidentally removed by
bumping or vibration.
EXISTING ELECTRICAL SYSTEM (Home Standby)
WARNING: PERSONAL DANGER
A fully isolated, double pole double throw manual
transfer switch must be installed any time a generator is
being connected to an existing distribution system.
If the generator set is connected to existing (electrical)
wiring circuits it is permitted only through a fully isolated
manual transfer switch. The transfer switch prevents
damage to the generator and other circuit components if
main line power is restored while the generator is
connected. Installing a transfer switch also permits the
use of normal fusing.