Generac Power Systems 0940-1 - Manual (Page 35)

POST INSTALLATION TESTS
The air cooled Impact-36 plus generator set was facto­
ry tested and adjusted using gasoline as fuel.The air
cooled Impact-34 plus generator set was factory tested
and adjusted using LP gas as fuel You should not be
required to adjust the unit any further except under
special circumstances.
A
WARNING: Do not make any unnecessary adjust­
ments. Factory settings are correct for most appli­
cations. When making adjustments, however, be
careful to avoid overspeeding the engine.
BEFORE INITIAL START UP
Before starting, complete the following:
1. Check engine crankcase oil level and, if necessary, fill to
dipstick FULL mark with the recommended oil. Do not fill
above FULL mark.
2. Check the fuel supply. Gas fuel lines must have been prop­
erly purged and leak tested in accordance with applicable
fuel codes. All fuel shutoff valves in the fuel supply lines
must be open.
A
DANGER: If an LP (propane) gas fuel system has
been installed, it must have been properly tested for
leaks before operating the system in compliance
with ANSI A119.2/NFPA 501C. No leakage is permit­
ted. You must be sure no gaseous fuel vapors enter
the vehicle interior.
INITIAL START
When absolutely certain that the unit has been proper­
ly installed and prepared for use, start the engine as
follows:
1. Turn off all electrical loads. Do this by setting the generator
main circuit breaker to its “OFF or “OPEN” position.
2. Refer to the Owner’s Manual shipped with unit for cranking
and starting instructions. The engine may require more
cranking for initial starting since the fuel lines have to be
primed (Use of the Primer Switch on gasoline units will
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 “Testing Under Load”. Run the unit at least 30
minutes will loads applied.
6. Turn off all electrical loads by setting the generator main
circuit breaker to “OFF or “OPEN."
7. Let the unit run at no-load for a few minutes to stabilize
internal engine-generator temperatures. Then, shut down
the engine.
IMPORTANT: THE GENERATOR SET WAS THOR­
OUGHLY TESTED AND ADJUSTED AT THE FACTO­
RY BEFORE SHIPPING. NO ADDITIONAL ADJUST­
MENT SHOULD BE NECESSARY. ONLY QUALIFIED
SERVICE
TECHNICIANS WHO HAVE BEEN
TRAINED SHOULD PERFORM ADJUSTMENTS
OUTLINED IN THIS MANUAL.
TESTING UNDER LOAD
Apply electrical loads equal to about 75-100% 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 air
flow is available. You must not allow the unit to over­
heat during prolonged operation.
NOTE: The generator engine is equipped with a high
temperature switch. The switch has normally-open
(N.O.) contacts. When the temperature is too high,
switch contacts close, and engine shuts down auto­
matically.
IMPORTANT: GENERAC RECOMMENDS THAT YOU
TEST THE GENERATOR FOR ADEQUATE COOL­
ING.
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