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Air Compressor Pump: To compress air, the piston
moves up and down in the cylinder. On the downstroke,
air is drawn in through the air intake valves. The exhaust
valves remain closed. On the upstroke of the piston, air
is compressed. The intake valves close and com-
pressed air is forced out through the exhaust valves,
through the outlet tube, through the check valve and into
the 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 is operating, 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, is designed
to automatically release compressed air from the com-
pressor head and the outlet tube when the air compres-
sor reaches "cut-out" pressure or is shut off. If the air is
not released, the motor will not be able to start. The
pressure release valve allows the motor to 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. It stops the motor when
the air tank pressure reaches the factory set "cut-out"
pressure.
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a 3/8" open end wrench or socket
Installing Rubber Foot Bumpers
1. Using a 3/8 inch open end wrench or socket remove
the screws attaching the unit to the shipping pallet.
NOTE: These screws will be used to install the
rubber foot bumpers.
2. Attach the four rubber foot bumpers to the units legs
using the four screws removed in step 1.
All manuals and user guides at all-guides.com
DESCRIPTION OF OPERATION
TOOLS NEEDED FOR ASSEMBLY
ASSEMBLY
7 — ENG
Safety Valve: If the 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 less than that desired, then bring up to the
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
indicates the air pressure available at the outlet side of
the regulator. This pressure is controlled by the regulator
and is always less 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 of this cooling
system is an engineered fan. It is perfectly normal for this
fan to blow air through the vent holes in large amounts.
You know that the cooling system is working when air is
being expelled.
Units Leg
Rubber Foot
Bumpers
Screw
D20419
Rev. 0
2/22/00
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