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13 - ENG
A13567
OPERATION
Know Your Air Compressor
READ THIS OWNER’S MANUAL AND SAFETY RULES BEFORE OPERATING
YOUR UNIT. Compare the illustrations with your unit to familiarize yourself with
the location of various controls and adjustments. Save this manual for future
reference.
Unloader Valve: All models are
continuous running outfi ts controlled
by tank pressure. When the maximum
tank pressure is obtained, the
unloader valve will exhaust the
compressed air to the atmosphere
(blow-off). When the pressure
drops to a predetermined point, the
unloader valve closes and causes the
tank pressure to increase.
Safety Valve: If the unloader valve
does not shut off the air compressor
at or near its cut-out pressure setting,
the safety valve will protect against
high pressure by "popping out" at its
factory set pressure (slightly higher
than the unloader blow-off setting).
Description of Operation
Become familiar with these controls
before operating the unit.
Air Compressor Pump (not shown):
To compress air, the pistons move
up and down in the cylinders. On the
downstroke, air is drawn in through
the air intake fi lter and then through
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 air tank
pressure above that required at the air
outlet.
Throttle Control (not shown): A
throttle control has been incorporated
as an extra feature. When maximum
tank pressure is reached and the
unloader valve unloads air, it also
activates a throttle control on the
engine. This gas saving feature holds
the engine at a factory-set idling
speed until air pressure in the air
tank drops to reset pressure; it then
reactivates the throttle control and
accelerates the engine to full throttle.
Tank Pressure
Gauge: The
tank pressure
gauge indicates
the reserve air
pressure in the
tank.
Unloader Valve
Safety Valve
Tank
Pressure
Gauge