Description Of Operation - Porter-Cable CF1540 Instruction Manual

DESCRIPTION OF OPERATION
Air Compressor Pump (A) Fig. 1: 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 (B) Fig. 2: 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.
Fig. 1
ON/AUTO - OFF Switch (C) Fig. 3: Turn
this switch ON to provide power to the
automatic pressure switch and OFF to
remove power at the end of each use.
Pressure Switch (D) Fig. 1: The pressure
switch automatically starts the motor when
the 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 (E) 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
pressure setting, always approach the
desired pressure from a lower pressure.
When reducing from a higher to a lower
setting, first reduce to pressure less than
that desired, then bring it up to the desired
pressure. Depending on the air require¬
ments of each particular accessory, the
outlet regulated air pressure may have to be
adjusted while operating the accessory.
Outlet Pressure Gauge (F) Fig. 3: 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 than or
equal to the tank pressure. See
"Operating Procedures".
Fig. 2
Fig. 3
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