Senco PC1131 - Manual (Page 9)


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COMPRESSOR FEATURES
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1) MOTOR/PRESSURE SWITCH: This switch is used to start or stop the air
compressor. Moving the switch to the "Auto" (On) position will provide automatic power to
the pressure switch which will allow the motor to start when the air tank pressure is below
the factory set "cut-in" pressure. When in the On Position, the pressure switch stops the
motor when the air tank pressure reaches the factory set "cut-out" pressure. For safety
purposes, this switch also has a pressure release valve located below the switch designed
to automatically release compressed air from the air compressor pump head and its
discharge line when the air compressor reaches "cut-out" pressure or is shut off. This allows
the motor to restart freely. Moving the switch to the "Off" position will remove power from
the motor and stop the air compressor.
2) MOTOR THERMAL OVERLOAD: The electric motor has a manual resettable overload
protector. If the motor draws excessive current for any reason, the thermal overload will
cut off power, thus preventing the motor from being damaged. Wait until the motor is cool
before pressing the reset button to begin working again. If multiple reset result in consistent
trips, check service and/or reference extension cord sizing recommendations.
3) AIR INTAKE FILTER: This filter is designed to clean air coming into the pump. To ensure
the pump continually receives a clean, cool, dry air supply this filter must always be clean and
ventilation opening free from obstructions. The filter can be removed for cleaning by using
warm, soapy water. Rinse the filter and air dry. Replace filter when necessary.
4) 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 valve while the exhaust
valve remains closed. On the upstroke, air is compressed, the intake valve closes and
compressed air is forced out through the exhaust valve, into the discharge line, through the
check valve and into the air tank.
5) SAFETY RELIEF VALVE: This valve is designed to prevent system failures by relieving
pressure from the system if compressed air reaches a predetermined level. The valve is preset
by the manufacturer and must not be modified in any way. To verify the valve is working
properly, pull on the ring. Air pressure should escape. When the ring is released, it will reseat.
6) AIR TANK DRAIN VALVE: The drain valve is used to remove moisture from the air
tank(s) after the air compressor is shut off. NEVER attempt to open the drain valve when
more than 10 PSI of air pressure is in the air tank! To open the drain valve, turn the
knob counterclockwise.
7) AIR TANK PRESSURE GAUGE: The air tank pressure gauge indicates the reserve air
pressure in the air tank (s).
8) OUTLET PRESSURE GAUGE: The outlet pressure gauge indicates the air pressure
available at the outlet side of the regulator. This pressure is controlled by the regulator and is
always less or equal to the air tank pressure.
9) PRESSURE REGULATOR: The air pressure coming from the air tank is controlled by the
regulator knob. Turn the pressure regulation knob clockwise to increase discharge pressure,
and counterclockwise to decrease discharge pressure.
10) OIL DIPSTICK: The dipstick will register the amount of oil in the pump. Oil level should
be checked on a daily basis to ensure that it does not exceed the maximum notch or fall
below the minimum notch on the dipstick. Air escaping from the vent is normal.
11) OIL DRAIN: The drain is provided to remove oil that has exceeded its service life. Drain
oil into approved container and dispose of properly. Refill prior to starting.
12) RISK OF BURNS Head and discharge lines can be very hot.
Do not touch until unit has cooled after use.
13) POWER CORD: Use only 115VAC 15A service. See extension cord recommendations on
page 10.
14) VENTILATION OPENING: Keep opening free of obstructions to provide maximum
cooling.
15) QUICK DISCONNECT: Spring loaded sealed coupling for easy hose removal. 1/4".
16) COLD START VALVE: The compressor is provided with a normally open valve. This
valve will relieve compressed air for a few seconds at compressor start up allowing the motor
to reach operating speed with low pump resistance.
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