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DESCR PT ONOFOPERAT ON
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Drain Valve:
At the base of the air tank to drain con-
densation at the end of each use.
Shut-off Valve:
Turn the knob counterclockwise
to
open the valve and clockwise to close.
Motor Thermal Overload Protector:
The electric
motor has an automatic thermal overload protector. If
the motor overheats for any reason, the thermal over-
load protector will shut off the motor. The motor must
be allowed to cool down before restarting.
Safety Valve: If the pressure switch does not shut off
the air compressor at its cut-out pressure setting, the
safety valve will protect against high pressure by
"popping out" at itsfactory set pressure (slightlyhigher
than the pressure switch cut-out setting).
ON/AUTO
- OFF Switch:
Turn this switch ON to
provide automatic power to the pressure switch and
OFF to remove power.
Air Intake Filter: This filter is designed to clean air
coming intothe pump. This filter must always be clean
and ventilation openings free from obstructions. See
"Maintenance".
Air Compressor Pump: To compress air, the piston
moves up and down in the cylinder. On the down-
stroke, air is drawn inthrough the air intake valves. The
exhaust valve remains closed. On the upstroke of the
piston, air is compressed. The intake valves close and
compressed air is forced out through the exhaust
valve, 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, isdesigned
to automatically release compressed air from the com-
pressor head and the outlettube when the air compres-
sor reaches "cut-out" pressure or is shut off. If the air
is not released, the motor will try to start, but will be
unableto. The pressure release valve allowsthe 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 heard 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.
Regulator:
The air pressure coming from the air tank
is controlled by the regulator knob.
Turn the 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 pressure may have to be adjusted while
operating the accessory.
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 in-
dicates the reserve air pressure in the tank. On outfits
with no pressure regulator, this is also the pressure
available at the air outlet.
Regulator: The air pressure coming from the air tank
is controlled by the regulator knob. Turn the knob
clockwise to increase pressure and counterclockwise
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 pressure may have to be adjusted while
you are operating the accessory. Some models have
shut-off valves only and do not include regulators.
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