13- ENG
D26805
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.
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 filter 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: All models are continuous running
outfits 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).
Tank
Pressure
Gauge
Safety
Valve
Unloader Valve
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