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OPERATION CONTROLS

AIR COMPRESSOR PUMP

To compress air, the piston moves up and down in the cylinder. On the downstroke, air

is drawn in through the intake valves. The exhaust valves remain closed. On the

upstroke of the piston, air is compressed. The intake valves close and compressed air

is forced out through the exhaust valves.

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 the “Cut-Out” pressure, the

check valve “closes”, allowing air pressure to remain inside the air tank.

ON/OFF SWITCH (A) FIG.3 

Turn this switch ON (press upwards) to provide power to the automatic pressure switch

and OFF to remove power at the end of each use.

PRESSURE SWITCH

The pressure switch automatically starts the motor when the tank pressure drops below

the factory set “Cut-In” pressure. It also stops the motor when the air tank pressure

reaches the factory set “Cut-Out” pressure.

REGULATOR (B) FIG.3

The air pressure coming from the air tank is controlled by the regulator. Turn the

regulator knob clockwise to increase pressure and counterclockwise to decrease

pressure. To avoid minor readjustment after making a change in the pressure setting,

always approach the desired pressure from a lower pressure. When reducing from a

higher to a lower setting, first reduce the pressure less than that desired, then bring it

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 (C) FIG.3

The outlet pressure gauge indicates the air pressure available at the outlet side of the

regulator. The pressure is controlled by the regulator and is always less than or equal to

the tank pressure.

TANK PRESSURE GAUGE (D) FIG.3

The tank pressure gauge indicates the reserve air pressure in the tank.

SAFETY PRESSURE RELEASE VALVE (E) FIG.4

If the pressure switch does not shut off the air compressor at its cutout pressure setting

and the air pressure keeps rising, the safety valve will protect against high pressure by

“popping out” above factory set pressure (slightly higher than the pressure switch

cut-out setting). 

WARNING!

: If the safety pressure release valve does not work properly, over

pressurization may occur, causing air tank rupture or an explosion. Daily pull the ring on

the safety valve to make sure that the safety valve operates freely. If the valve is stuck

or does not operate smoothly, it must be replaced with the same type of valve.

DRAIN VALVE (F) FIG.5

The drain valve is located at the base of the air tank and is used to drain condensation at the end of each use. The drain valve shown in Fig.5 is

in the closed position. Turn drain valve counterclockwise to drain condensation. 

FIGURE 3

FIGURE 4

FIGURE 5

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