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Operating Instructions
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Operation
• Pressure Switch - Auto/Off Switch
(Figure 7) - 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 or when
changing air tools.
Figure 7 - Auto/Off Switch
• Regulator - The regulator controls
the amount of air pressure released
at the hose outlet.
• ASME Safety Valve - This valve
automatically releases air if the
tank pressure exceeds the preset
maximum.
• Exhaust 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
exhaust tube.
• Check Valve - A one-way valve
that allows air to enter the tank,
but prevents air in the tank from
flowing back into the compressor
pump.
• Handle - Designed to move the
compressor.
Never use the
handle on wheeled
units to lift the unit completely off the
ground.
• Drain Valve - 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 by opening the drain valve located
underneath the tank.
BEFORE FIRST START-UP
BREAK-IN PROCEDURE
(Complete this procedure before using
compressor for the first time. Once
completed, it is not necessary to repeat.)
1. Turn regulator knob fully clockwise
(to the right) to open air flow.
2. Turn on/off switch to OFF position.
3. Plug in power cord.
4. Turn on/off switch to AUTO position
and run compressor for 30 minutes.
5. Turn on/off switch to OFF position.
6. Unplug power cord- open drain
valve.
The compressor is now ready for use.
BEFORE FIRST START-UP
OPERATING PROCEDURE
1. Turn regulator knob fully counter
clockwise (to the left) to close air
flow.
2. Connect air hose to outlet of
regulator.
3. Turn on/off switch to OFF position.
4. Plug in power cord.
5. Turn on/off switch to AUTO position
and let compressor run until it
reaches automatic shutoff pressure.
6. Attach tire chuck or tool to end of
hose.
7. Turn regulator knob clockwise (to
the right) to desired pressure of tool
being used.
On/Off cycling of compressor
In the AUTO position, the compressor
pumps air into the tank. When a shutoff
(preset “cut-out”) pressure is reached,
the compressor automatically shuts off.
If the compressor is left in the AUTO
position and air is depleted from
the tank by use of a tire chuck, tool,
etc., the compressor will restart
automatically at its preset “cut-in”
pressure. When a tool is being used
continuously, the compressor will cycle
on and off automatically.
In the OFF position, the pressure switch
cannot function and the compressor
will not operate. Make sure switch
is in OFF position when connecting
or disconnecting power cord from
electrical outlet.
ASME SAFETY VALVE
Do not remove or
attempt to adjust
the safety valve!
Check the safety valve by performing
the following steps:
1. Plug the compressor in and run until
shut off pressure is reached (see
Operating Procedure).
2. Wearing safety glasses, pull the
ring on the safety valve (see Figures
6 and 8) to release pressure from
compressor tank. Use your other
hand to deflect fast-moving air from
being directed toward your face.
Figure 8
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 (MP3105), located as near to the gun as possible, will help eliminate this
moisture.