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5.3.1 GENERATOR AIRFLOW
Engine operation drives cooling fans for the two-stage
cooling air system. A pressure fan draws cooling air
into the top of the generator (Figure 5.10). This air-
flow cools the engine/generator and electronic com-
ponents. The second part of the cooling system, a
suction fan, draws air that is heated from a hot
engine into a collector pan at the base of the unit.
This heated air (although cooler than exhaust muf-
fler) is then deflected out the bottom toward the
ground.
Figure 5.10 – Airflow Through Engine/Generator
5.3.2 TESTING THE INSTALLATION
Generac recommends testing the installation to be
sure adequate cooling airflow is available to the unit
before placing the unit into service. If the unit shows
signs of overheating, you will need to enlarge the air
openings. Never place a unit into service until
absolutely certain that cooling and ventilation is ade-
quate.
You must test the installation, especially if you
bring in air from below the generator set.
5.4
GASOLINE FUEL SYSTEM
The installation of a gasoline fuel system (Figure
5.11) for a recreational vehicle generator set must
comply with applicable codes, standards and regula-
tions. The entire fuel system must be completely free
of leaks. There must be no possibility of gasoline
vapors entering the vehicle interior.
QUIETPACT 50 and 70 Recreational Vehicle Generators
GUARDIA
by Generac Power Syste
QUIETPACT
55G
INDUSTRIAL
NOTE:
Section 5 – Installation
Figure 5.11 – Generator Fuel System
Fuel Line
DANGER
Gasoline is highly flammable, and its vapors are
explosive. Comply with all codes, standards and
regulations pertaining to gasoline fuel systems
used in recreational vehicle generators.
Properly install and maintain the fuel system
and keep it entirely free of leaks. Gasoline
vapors must not enter the vehicle interior.
Factory installed generator fuel system components
include (a) fuel filter, (b) 12-volt DC electric pump, (c)
engine carburetor, and (d) interconnecting lines and
fittings. Connect a fuel supply line to the fuel filter
inlet. Use a flexible length of approved fuel hose
between the fuel filter inlet connection and rigid fuel
lines.
5.4.1 FUEL TANK
Either the generator must share the vehicle engine's
fuel tank, or you must install a separate fuel tank for
the generator set. All fuel tanks installed on the vehi-
cle must be constructed, installed and restrained so
they comply with applicable codes, standards and
regulations.
If the generator is to share the vehicle engine's tank,
separate fuel pickup tubes are required for the engine
and the generator. Generac recommends that you
make the fuel pickup tube 2 to 3 inches (51 to 76
mm) shorter than the vehicle engine's pickup tube.
This prevents the generator from depleting the entire
fuel supply during prolonged generator operating
periods.
Do NOT tee the generator fuel supply line into
!
the vehicle engine fuel supply line. If this is
done, the generator will be starved of fuel
when both engines are operating at the same
time. Also, while the vehicle engine is not run-
ning, generator operation may drain the vehi-
cle engine supply line, making it difficult to
start the vehicle engine.
Generac
Fuel Pump
(Behind Access
Cover)
Fuel Filter
(Side of Unit)
®
Power Systems, Inc. 25
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