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Safety Valve
OVER-Pk, ESSURiZATION OF THE AIR
TANK MAY CAUSE TANK RUPTURE OR
EXPLOSION. THE OUTFIT IS PROTECTED
FROM THE OVER-PRESSURIZATION BY A
SAFETY VALVE. DO NOT ELiMiNATE,
biAi{E AC, JUSTbIENTS OR SUBSTITU-
TIONS TO THIS DEVICE.
Note
Avoid using long extension cords. They can
cause a power loss to the motor. Add extra air
hose instead of extension cords.
If an extension cord must be used, follow the recom-
mendations listed below using a 3-wire extension cord.
Cord Length
0-50 Feet
Minimum Wire Size
12 gauge
PRESSURE
Figure 3
TANK
PRESSURE GAUGE
Pressure Release Valve
The pressure release valve located on the bottom of th=
pressure switch is designed to unload air from the com-
pressor head automatically at unit shut off. This protects
the motor from starting against air pressure remaining in
the compressor head and tubing. When the motor stops
running, air wilt be heard escaping from the valve for a
few seconds. When the motor is running, no air should
be leaking from the pressure release valve.
The pressure switch (20) is pre-set to shut off the motor
automatically at the maximum operating pressure. If the
pressure switch does not shut off the outfit at its cut-off
pressure setting, the safety valve will protect against
high pressure by popping at its pre-set pressure.
Motor
The motor has a thermal overload protector. If the motor
overheats for any reason, the overload protector will
shut off the motor. The motor must be allowed to cool
before restarting. Turn the ON-AUTO!OFF switch to the
OFF position. To restart, turnthe ON-AUTO/OFF switch
to the ON position. Depress the reset button located on
the end of the motor, Refer to Figure 1.
Note
If the overload protector shuts the motor off
frequently, check for a possible voltage prob-
lem. Low voltage can also be suspected when:
1. The motor does not get up to full power or
speed.
2. Fuses blow out when starting motor.
3, Lights dim and remain dim when motor is
started.
MAINTENANCE
Replacing Air Intake Filter
A dirty air intake filter will not allow the compressor tO
operate at futl capacity. When the intake filter becomes
dirty, oily, or covered with paint overspray, replace it. Do
not operate the compressor with the air intake filter
removed. To replace the filter, use needle nosed pliers
and pull or pry the old filterout. Replace with new. Refer
to Figure 1.
Checking Safety Valve
OVER-PRESSUR_ZAT[OI: C_,USI;,JG TANK
RUPTURE OR EXPLOSION _',';A\' OCCUR IF
THE SAFETY VALVE _OES NCT WORK
PROPERLY, OCCASIONALLY PULL THE
RING ON THE SAFETY VALVE TO MAKE
SURE THAT THE VALVE OPERATES
FREELY. IFTHEVALVEiS STUCK 0_ DOES
NOT OPERATE SMOOTHLY. I- r,',U_-T EE
REPLACED.
Checking and Changing Oil
Overti_lirtg with oil will cause premature
compressor failure. Do not overfill.
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