Speedaire 5Z598C - Manual (Page 3)

® 3
Speedaire Operating Instructions and Parts Manual
Model 5Z598C
PRESSURE SWITCH
The pressure switch automatically
starts the motor when the air tank
pressure drops below the factory set
"cut-in" pressure. When the air tank
pressure reaches the factory set "cut-
out" pressure the pressure switchauto-
matically stops the motor.
SAFETY VALVE
If the pressure switch does not shut off
the air compressor at its cut-out
pressure setting, the safety valve will
protect against high pressure by
"popping off" at its preset pressure.
REGULATOR
Air pressure coming from the air tank
is controlled by the regulator knob.
Turn the knob clockwise to increase
pressure and counter-clockwise to
decrease pressure. To avoid minor
readjustments 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, reduce to a pressure
lower than what is desired, then raise
the pressure to the desired setting. The
outlet regulated air pressure may need
to be adjusted while operating,
depending on the air requirements of
the accessory.
3. Turn regulator clockwise, opening it
fully, to prevent air pressure build-
up in the tank.
4. Move the OFF/AUTO lever to AUTO.
Compressor will start.
5. Run the compressor for 15 minutes.
Make sure the regulator is open
and there is no tank pressure
buildup.
6. After 15 minutes, close the
regulator by turning it counter-
clockwise. Air tank will fill to cut-out
pressure and then the motor will
stop.
Operation
AIR COMPRESSOR PUMP
To compress air, the piston moves up
and down in the cylinder. Air is drawn in
through the air intake valves on the
downstroke of the piston. Exhaust valve
remains closed. On the upstoke of the
piston, 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 the air tank
pressure above what is required at the
air outlet.
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 pressure to remain inside
the air tank.
UNLOADER VALVE
The unloader valve located on the side
of the pressure switch, is designed to
automatically release compressed air
from the compressor head and the
outlet tube when the air compressor
reaches "cut-out" pressure or is shut
off. Motor will not be able to start if
the air is not released. The pressure
release valve allows the motor to
restart freely. After the motor stops
running air will escape from the
unloader valve. No air should be heard
leaking when the motor is running.
Installation (Continued)
1. Air compressor is equipped with a
cord having a ground wire with an
appropriate grounding plug. Plug
must be used with an outlet that
has been installed and grounded in
accordance with all local codes and
ordinances. Outlet and plug must
have the same configuration. DO
NOT USE AN ADAPTER.
2. Do not modify the provided plug. If
it does not fit the available outlet,
the correct outlet should be
installed by a qualified electrician.
3. Inspect plug and cord before each
use. Do not use if there are signs of
damage.
Risk of electrical
shock. If repairing
or replacing cord or plug, the
grounding wire must be kept
separate from the current-carrying
wires. Never connect the grounding
wire to a flat blade plug terminal.
(The grounding wire has insulation
with an outer surface that is green –
with or without yellow stripes.)
BREAK-IN PROCEDURES
This procedure is only required the first
time the air compressor is put into
service and when the check valve has to
be replaced.
1. Set the pressure switch OFF/AUTO
lever to the OFF position.
2. Plug power cord into the correct
branch circuit receptacle.
Pressure
Switch
Off/Auto Lever
(Not Shown)
Tank
Pressure Gauge
Regulated
Pressure
Gauge
Air Filter
(Not Shown)
Air Outlet
Figure 3
Drain Valve
(Not Shown)
E
N
G
L
I
S
H
White
Wire
Ground
15 AMP
Plug
Grounded
Outlet
Outlet
Grounding
Pin
Figure 2