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Assembly
(Con't)
as 10W-30. Additives in motor oil can
cause valve deposits and reduce pump
life. For maximum pump life, drain and
replace oil after the first hour of run
time. Proper oil fill level is illustrated in
Figure 5.
MOISTURE IN COMPRESSED AIR
Moisture in compressed air will form
into droplets as it comes from an air
compressor pump. When humidity is
high or when a compressor is in
continuous use for an extended period
of time, this moisture will collect in the
tank. When using a paint spray or
sandblast gun, this water will be carried
from the tank through the hose, and out
of the gun as droplets mixed with the
spray material.
IMPORTANT: This condensation will
cause water spots in a paint job,
especially when spraying other than
water based paints. If sandblasting, it
will cause the sand to cake and clog the
gun, rendering it ineffective.
A filter in the air line, located as near to
the gun as possible, will help eliminate
this moisture.
Operation
Pressure switch - Auto/Off Switch - In
the "auto" position, the compressor
shuts off automatically when tank
pressure reaches the maximum preset
pressure. In the "off" position, the
compressor will not operate. This
switch should be in the "off" position
when connecting or disconnecting the
power cord from the electrical outlet.
Unloader - Device on pressure switch
which allows pressurized air to vent
alleviating motor restarts under load.
Regulator - The regulator controls the
amount of air pressure released at the
hose outlet (Sold separately).
ASME Safety Valve - This valve
automatically releases air if the tank
pressure exceeds the preset maximum.
Discharge tube - This tube carries
compressed air from the pump to the
check valve. This tube becomes very hot
during use. To avoid the risk of severe
burns, never touch the discharge tube.
Discharge Tube
Belt Guard
Check
Valve
Safety
Valve
Drain Petcock
Figure 6
Check valve - One-way valve that
allows air to enter the tank, but
prevents air in the tank from flowing
back into the compressor pump.
Belt Guard - Covers the belt, motor
pulley and flywheel.
Drain Petcock - This valve is located on
the bottom of the tank. Use this valve
to drain moisture from the tank daily
to reduce the risk of corrosion.
Reduce tank pressure below 10 psi,
then drain moisture from tank daily to
avoid tank corrosion. Drain moisture
from tank(s) by opening the drain
petcock located underneath the tank.
START-UP
Do not attach air
tools to open end
of the hose until start-up is completed
and the unit checks OK.
Never disconnect
threaded joints
with pressure in tank!
1. Remove the breather and fill pump
to the proper oil level. See
lubrication section.
2. Turn outlet valve to open air flow.
3. Move pressure switch lever to the
OFF position and plug in power
cord. Move pressure switch to the
AUTO position to run the unit.
5
OFF
Pressure
Switch
Figure 7
4. Run the unit for 30 minutes, under
no load, to break in pump parts.
5. Turn outlet valve to shut off air flow
Tank
and move the pressure switch lever
Outlet
to OFF. The compressor is now ready
for use.
NOTE: Electric models are equipped
with a pressure switch that
automatically turns the motor OFF
when the tank pressure reaches a
preset level. After air is used from the
tank and drops to a preset low level,
the pressure switch automatically turns
the motor back on.
Maintenance
Disconnect, tag and lock
out power source, then
release all pressure from
the system before attempting to install,
service, relocate or perform any
maintenance.
All repairs should be performed by an
authorized service representative.
FOR EFFICIENT OPERATION:
Perform the following test to verify free
operation of the safety valve weekly
and follow maintenance schedule.
1. Pull ring on safety valve and allow
the ring to snap back to normal
position (See Figure 8). This valve
automatically releases air if the tank
pressure exceeds the preset
maximum.
Figure 8
Vertical Models
AUTO
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