Guardian Technologies 004270-3 User Manual

Generac

®

Power Systems, Inc.

35

The generator set was factory-tested and adjusted. It
is not necessary to adjust the unit any further, except
under special circumstances.

Before starting, complete the following:

1. Check the engine crankcase oil level and, if nec-

essary, fill to the dipstick “FULL” mark (cross-
hatched area) with the recommended oil. Do not
fill above the FULL mark.

2. Check the fuel supply. Fuel lines must have been

properly purged and leak-tested in accordance
with applicable fuel codes. All fuel shutoff valves
in the fuel supply lines must be open.

When absolutely certain that the unit has been prop-
erly installed and prepared for use, start the engine
as follows:

1. Turn off all electrical loads. Do this by setting the

generator’s line breakers to their “OFF” (or open)
position.

2. Refer to Part I, Section 2.4, “Starting the

Generator”, for cranking and starting instruc-
tions. The engine may require more cranking for
initial starting, since the fuel lines have to be
primed (use of the preheat switch will operate the
generator’s electrical fuel pump and shorten this
time).

3. Let the engine warm up for about five minutes to

allow internal temperatures to stabilize.

4. Carefully inspect the engine/generator for fuel,

oil, and exhaust system leaks. Before proceeding
to the next step, correct any leakage immediately.

5. When all tests and adjustments at no-load are

completed, apply electrical loads and check for
proper operation under load. See Section 3.4.
Run the unit at least 30 minutes, with loads
applied.

6. Turn off all electrical loads by setting the genera-

tor’s line breakers to their “OFF” (or open) posi-
tion.

7. Let the unit run at no-load for a few minutes to

stabilize internal engine/generator temperatures.
Then, shut down the engine.

Apply electrical loads equal to about 50 to 75 percent
of the unit's rated wattage/amperage capacity.

Let the unit run at least 30 minutes with load
applied. During this part of the test, check that the
unit is not running excessively hot and that adequate
cooling airflow is available. Do not allow the unit to
overheat during prolonged operation.

NOTE:

The generator engine is equipped with a high
coolant temperature switch. The switch has nor-
mally open (N.O.) contacts. When the engine
coolant temperature is too high, switch contacts
close, and the engine shuts down automatically.

GENERAC RECOMMENDS THAT THE GENERA-
TOR BE TESTED FOR ADEQUATE COOLING.

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