Basic Air Compressor Components - Grizzly PRO QUIET Series Owner's Manual

20-gallon oil-free quiet air compressor

Table of Contents

Precautions

Oil-less air compressor are factory lubricated for life and do not require any oil.

The basic components of the air compressor are the electric motor, pump, pressure switch, and tank.

The electric motor powers the pump.

The electric motor is equipped with an overload protector and an automatic reset. If the motor gets overheated, the overload

protector will shut it down to prevent damage to the motor. When the motor sufficiently cools, it will automatically restart.

The dual pump compresses the air and discharges it into the tank.

The tank stores the compressed air.

The pressure switch (located internally) shuts down the motor and relieves air pressure in the pump and transfer tube when the air pressure

in the tank reaches the cut-out pressure. As compressed air is used, and the pressure level in the tank drops to the cut-in pressure, the

pressure switch restarts the motor automatically, without warning, and the pump resumes compressing air.

Compressor Controls

Power Switch: This switch turns the

compressor power ON and OFF.

Pressure Relieve Valve: If the pressure

switch does not shut down the motor

when pressure reaches the pre-set level, this

valve will pop open automatically to prevent

over-pressurization. To operate manually, pull

the ring on the valve to relieve air pressure in

the tank.

Tank Pressure Gauge: This gauge

measures the pressure level of the air stored in

the tank. It is not adjustable by the operator

and does not indicate line pressure.

Air Pressure Regulator: This air

pressure regulator enables you to adjust line

pressure to the tool you are using.

Drain Valve: Located at the bottom of the

tank, this is used to release moisture that

accumulates through usage.

Warning! Never exceed the maximum working pressure of a tool. Turn the knob

WARNING!

clockwise to increase pressure, and counterclockwise to decrease pressure.