Guardian Technologies 04164-3 Manual De Usuario

 10 

Read the rated wattage/amperage capacity of the gen-
erator on the generator data decal (see "Generator 
Identification").

Applying electrical loads in excess of the unit’s rated 
capacity will cause the engine/generator to automati-
cally 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, 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 time more watts of power for 
starting than for running (for a few seconds dur-
ing 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 watt-
ages 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.

This switch (Figure 2.4) has normally closed (N.C.) 
contacts that are held open by engine oil pressure dur-
ing 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.

This switch (Figure 2.4), which has normally open 
(N.O.) contacts, is mounted near the oil filter. The 
contacts close if the temperature should exceed 
approximately 293º F (145º C), initiating an engine 
shutdown.

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The Controller Circuit Board houses a field boost 
diode and resistor that are not part of the automatic 
choke circuit. These two components are part of 
a “field boost” circuit (Figure 2.5). During engine 
cranking only, a positive DC (battery) voltage is deliv-
ered through the diode, resistor, brushes and slip 
rings, and the generator rotor. Application of this 
voltage to the rotor “flashes the field” whenever it is 
started. Flashing of the field each time the generator 
starts makes sure that a sufficiently strong magnetic 
field is available to produce “pickup” voltage in the 
stator windings.

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