Generac 0661-4 - Manual (Page 9)

The generator’s exhaust system gives off DEADLY
carbon
monoxide gas. This dangerous gas, if
breathed in sufficient concentrations, can cause
unconsciousness and even death. Never operate the
generator set with the vehicle inside any garage or
other enclosed area. Never operate the generator if it
has a leaky exhaust system. Close windows in the
vicinity of the generator exhaust outlet and take any
other steps to prevent exhaust gases from entering
rooms or areas occupied by people or animals.
EFFECTS OF MOISTURE AND DIRT
Keep the generator set as clean and dry as possible.
Protect unit against excessive dust, dirt, corrosive
vapors, road splash, etc. Permitting dirt and moisture
to accumulate on generator windings will have an
adverse effect on the insulation resistance of those
windings.
When moisture is allowed to remain in contact with
windings, some of the moisture will be retained in
voids and cracks in the insulation. This causes a
reduced insulation resistance and will eventually
cause problems. Dirt will make the problem worse,
since dirt tends to hold moisture in contact with wind­
ings. Salt (as from sea air) will also worsen the prob­
lem since it tends to absorb moisture from the air.
Salt and moisture, when combined, form a good elec­
trical conductor.
DO NOT OVERLOAD THE GENERATOR
You can read the rated wattage/amperage capacity of
your generator on the generator data decal (see
“Identification Record” on Page 1).
Applying electrical loads in excess of the unit’s rated
capacity will cause the engine-generator to automati­
cally shutdown.
To avoid overloading, add up the wattage of all con­
nected electrical lighting, appliance, tool and motor
loads. This total should not be greater than the gener­
ator’s rated wattage capacity.
• Most lighting, appliance, tool and motor loads indicate
their required watts on their nameplate or data plate. For
light bulbs, simply note the wattage rating of the bulb.
• If a load does not show its rated wattage, multiply that
load’s rated VOLTS times AMPS to obtain WATTS.
• Induction type motors (such as those that run the vehicle’s
furnace fan, refrigerator, air conditioner, etc.) need about 2-
1/2 times more watts of power for starting than for running
(for a few seconds during motor starting). Be sure to allow
for this when connecting electrical loads to the generator.
First, figure the watts needed to start electric motors in the
system. To that figure, add the running wattages of other
items that will be operated by the generator.
• On a new generator do not apply heavy electrical loads
for the first two or three hours of operation.
ENGINE PROTECTIVE DEVICES
This generator has a computer that monitors oil pressure,
oil temperature, engine speed, and voltage output. This
section discusses those protective devices.
AUTOMATIC LOW OIL PRESSURE SHUTDOWN
The engine is equipped with an oil pressure sensor that
shuts down the engine automatically when oil pressure
is too low. If the engine shuts down by itself and the
fuel tank has enough gasoline, check the engine oil
level.
■ INITIAL STARTUP
During initial startup, a time delay built into the shut­
down control system allows oil pressure to build. The
delay allows the engine to run for about 10 seconds
before sensing oil pressure.
■ SENSING LOW PRESSURE
If the system senses low oil pressure during operation,
the engine shuts down. If you do restart the engine
after a low oil pressure shutdown and have not correct­
ed the oil level, the engine runs for about 10 seconds
as described above then stops.
HIGH TEMPERATURE SHUTDOWN
A temperature switch with normally-open (N.O.) con­
tacts is mounted near the oil filter. If the temperature
were to exceed a preset temperature, the switch con­
tacts close and the engine shuts down.
OVERSPEED
if engine speed is increased manually (or otherwise)
beyond the control of the computer control system, the
computer disables the load capability of the generator
and shuts down the engine.
WARNING: DO NOT ATTEMPT A MANUAL ADJUST­
MENT TO CONTROL THE ENGINE SPEED. EQUIP­
MENT DAMAGE OR PERSONAL INJURY MAY
RESULT.
LOW VOLTAGE
The computer monitors the voltage output of the gener­
ator. If voltage sensors indicate that voltage has
dropped below a preset level, the engine will automati­
cally shut down. Once the unit has shutdown, the com­
puter is automatically reset when you restart the
engine.
NOTE: The computer allows for the low voltage output
that occurs during startup. A time delay that allows the
engine to start and warm up is programmed into the
monitoring system.
CAUTION: Before restarting a generator that has
been shutdown, disconnect all loads the generator
might power by whatever means provided, such as
the recreational vehicle’s main circuit breaker.
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