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DESCRIPTION OF OPERATION
Air Compressor Pump: To compress air, the pistons
move up and down in the cylinders. On the downstroke,
air isdrawn inthrough the air intake valves. The exhaust
valves remain dosed. On the upstroke of the piston, air
iscompressed. The intake valves close and compressed
air isforced out through the exhaust valves, through the
outlettubes, through the check valve and intothe air tank.
Working air is not available until the compressor has
raised the air tank pressure above that required at the air
outlet.
Check Valve: When the air compressor isoperating, the
check valve is =open", allowing compressed air to enter
the air tank. When the air compressor reaches =cut-out"
pressure,the check valve =closes", allowing air pressure
to remain inside the air tank.
Pressure Release Valve: The pressure release valve
located on the side of the pressure switch, isdesigned to
automatically release compressed air from the compres-
sor head and the outlet tube when the air compressor
reaches =cut-out" pressure or is shut off. If the air isnot
released, the motorwill not be able tostart. The pressure
release valve allowsthe motorto restart freely. When the
motor stops running, air will be heard escaping from the
valve for a few seconds. No air should be leaking when
the motor is running.
Pressure Switch: The pressure switch automatically
starts the motor when the air tank pressure drops below
the factory set =cut-in" pressure, Itstopsthe motorwhen
the air tank pressure reaches the factory set "cut-out"
pressure,
Globe Valve: Turn the knob counter-clockwise to open
the valve and clockwise to close.
Safety Valve: Ifthe pressure switch does not shut off the
air compressor at its cut-out pressure setting, the safety
valve will protect the tank against high pressure by
=popping out= at its factory set pressure (slightly higher
than the pressure switch cut-out setting).
Regulator:. The air pressure coming from the air tank is
controlled by the regulator. Turn the regulator knob
clockwise to increase pressure and counter-clockwise to
decrease pressure. To avoid minor readjustment after
making a change in pressure setting, always approach
the desired pressure from a lower pressure. When
reducing from a higher to a lower setting, first reduce to
some pressure lessthan that desired, then bdng up tothe
desired pressure. Depending on the air requiroments of
each particular accessory, the outlet regulated air pres-
sure may have to be adjusted while operating the acces-
sory.
Outlet Pressure Gauge: The outlet pressure gauge
indicates the air pressure available atthe outletside ofthe
regulator. This pressure iscontrolled bythe regulator and
is always tess or equal to the tank pressure. See
"Operating Procedures'.
Tank Pressure Gauge: The tank pressure gauge indi-
cates the reserve air pressure in the tank.
Cooling System: This compressor contains an ad-
vanced design cooling system. At the heart ofthis cooling
system isan engineered fan. Itisperfectly normal for this
fan to blow air through the vent holes in large amounts.
You know that the cooling system isworking when air is
being expelled.
Tools Needed for Assembly
• a 9/16" socket or open end wrench for attaching the wheels or removing shipping beards
• a 3/8" open end wrench or socket to tighten handle screws
6
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