Advertisement
Air Compressor
Pump:
To compress
air, the piston
moves up and down in the cylinder.
On the downstroke,
air is drawn in through
the air 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, through the
outlet tube, through
the check valve and into the air tank.
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 pres-
sure to remain inside the air tank.
Pressure
Switch:
The pressure
switch
is fitted with a
small lever.
It is labeled
"Auto/O"
for automatic
run or
off. In the "O" position, the motor will not run. In the "Auto"
position,
it automatically
starts
the motor
when the air
tank pressure
drops below the factory
set "cut-in"
pres-
sure. It stops the motor when the air tank pressure reaches
the factory
set "cut-out"
pressure.
Pressure
Release Valve:
The pressure
release valve lo-
cated on the side of the pressure
switch
is designed
to
automatically
release compressed
air trapped
within the
compressor
head and outlet
tube. This short release of
air will occur when the air compressor
reaches "cut-out"
pressure
or the unit is shut off. If the air is not released,
the motor will not be able to start when next required.
Flow Valve:
The flow valve allows air to flow from the
head as the motor
is getting
"up to speed".
Once the
motor
reaches
normal
operating
speed, the flow valve
closes
and the pump
begins
to compress
air, thus
re-
quiring
less amp draw on initial start.
Safety Valve:
If the pressure switch does not shut off the
air compressor
at its cut*out
pressure
setting, the safety
valve will protect the tank against high pressure by "pop-
ping out" at its factory
set pressure
(slightly higher than
the pressure
switch
cut-out
setting).
Regulator:
The air pressure
coming from the air tank is
controlled
by the regulato_
The regulator
control knob is
a vibration
proof design.
Lift the regulator
knob
to en-
gage and depress
the knob to lock. Turn the regulator
knob clockwise
to increase
pressure and counter-clock-
wise to decrease
pressure.
To avoid minor readjustment
after making
a change
in pressure
setting,
always
ap-
proach 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 pres-
sure may have to be adjusted
while operating
the acces-
sory.
Regulator
Gauge:
The outlet pressure
gauge indicates
the air pressure available
at the outlet side of the regula-
tor.
This pressure
is controlled
by the regulator
and is
always less than or equal to the tank pressure.
See "Op-
erating
Procedures".
Tank Pressure
Gauge:
The tank pressure
gauge indi-
cates the reserve air pressure
in the tank.
Cooling
System:
This compressor
contains an advanced
design
cooling
system.
At the heart of this cooling
sys-
tem is an engineered
fan. it is perfectly
norma! for this
fan to blow air through
the vent holes in large amounts.
You know that the cooling
system is working
when air is
being expelled.
Drain Valve:
This valve is located
at the bottom
of the
tank. To drain accumulated
moisture
from the tank, pull
on the safety
valve until tank pressure
is 15 PSI. Un-
screw the drain valve and allow the water to drain.
• a 9/16" socket
and an open end wrench for attaching
the wheels
• a 3/8" open end wrench or socket
to tighten handle
screws
7-- ENG
D20015
Rev I
3/22/00
Advertisement
