Generac Power Systems 00862-2 - Manual (Page 12)

OPERATION
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Section 2 - Operation
Series QP55-G Recreational Vehicle Generator
• 2.8.1 DO NOT OVERLOAD THE GENERATOR
You can read the rated wattage/amperage capacity
of your generator on the generator data decal (see
Section 1.1 on Page 4).
Applying electrical loads in excess of the unit’s
rated capacity will cause the engine/generator to
automatically shut down.
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
generator’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, multi­
ply 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 condi­
tioner, etc.) need about 2-1/2 time 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.
• Do not apply heavy electrical loads for the first
two or three hours of operation.
2.9 OPERATING PRECAUTIONS
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Never operate the recreational vehicle genera­
tor set while the vehicle is parked over dry
leaves, dry grass or any other combustible sub­
stance. The generator's exhaust system
becomes extremely hot and can cause fire if it
is too close to combustible materials.
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 vehi­
cle 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.
2.10 PROTECTION SYSTEMS
♦ 2.10.1 LOW OIL PRESSURE SWITCH_______________
This switch (Figure 2.5) has normally closed (N.C.)
contacts that are held open by engine oil pressure
during cranking and operating. Should oil pressure
drop below a preset level, switch contacts close, and
the
engine automatically shuts down. The unit
should not be restarted until oil is added.
♦ 2.10.2 HIGH TEMPERATURE SWITCH
This switch (Figure 2.5), which has normally open
(N.O.) contacts, is mounted near the oil filter. The
contacts close if the temperature should exceed
approximately 293° F (145° C), initiating an engine
shutdown.
Figure 2.5
-
Low Oil Pressure and
High Temperature Switches
HIGH
diode and resistor that are not part of the automat­
ic choke circuit. These two components are part of
a "field boost” circuit (Figure 2.6). During engine
cranking only, a positive DC (battery) voltage is
delivered through the diode, resistor, brushes and
slip rings, and the generator rotor. Application of
this voltage to the rotor “flashes the field” whenev­
er it is started. Flashing of the field each time the
generator
starts makes sure that a sufficiently
strong magnetic field is available to produce “pick­
up” voltage in the stator windings.
'1 O Generac* Power Systems, Inc.