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DESCRIPTION OF OPERATION
Air Compressor Pump: To compress air, the piston
moves up and down inthe cylinder. On thedownstroke, air
isdrawn inthrough theair intake valves. The exhaust valves
remain closed. On the upstroke of the piston, air is
compressed. The intake valves closeandcompressed airis
forced out through the exhaust valves, through the outlet
tube, throughthe checkvalve and intotheair tank. Working
air is not available until the compressor has raised the air
tank pressure above that required at theair 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.
PressureReleaseValve: The pressure release valvelocated
on theside of the pressure switch, isdesigned toautomat-
icallyrelease compressed airfrom thecompressorhead and
the outlettube when the air compressor reaches "cut-out"
pressure or is shut off. If the air is not released, the motor
willnot beable to start. The pressure release valveallows
the motor to restart freely. When the mQtor stopsrunning,
air willbe heard escaping from the valve for a few seconds.
No air should be leaking when the motor isrunning.
PressureSwitch: The pressure switchautomatically starts
themotorwhen theair tank pressure drops belowthefactory
set "cut-in" pressure. It stops the motor when the air tank
pressure reaches the factory set "cut-out" pressure.
SafetyValve: Ifthe pressure switch does notshutoffthe air
compressor at itscut-out pressure setting,the safety valve
willprotectthetank against high pressure by=popping out"
at itsfactory set pressure (slightlyhigherthan the pressure
switchcut-out setting).
Regulator: The air pressure coming from the air tank is
controlled by theregulator. Turn the regulator knobclock-
wise to increase pressure and counter-clockwise to de-
crease 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 less than thatdesired, then bringup tothe
desired pressure. Depending on the air requirements 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 indi-
cates the air pressure available at the outlet side of the
regulator. This pressure iscontrolled bythe regulatorand
is always less or equal to the tank pressure. See
"Operating Procedures".
Tank Pressure Gauge: The tank pressure gauge indicates
the reserve air pressure inthe tank.
Cooling System: This compressor contains an advanced
design cooling system.At the heartofthis coolingsystem is
an engineered fan. Itisperfectly normal for thisfan toblow
air through the vent holes inlarge amounts. You know that
the cooling system isworking when air isbeing expelled.
Tools Needed for Assembly
• a 9/16" socket or open end wrench for attaching the wheels
• a 3/8" open end wrench or socket to tighten handle screws
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