Astro Pneumatic 29 Gallon Belt Driven Air Compressor 68127 - Manual (Page 9)

GLOSSARY OF TERMS
Air Filter
Porous element contained within a metal or plastic hous­
ing attached to the compressor cylinder head which
removes impurity from the intake air ofthe compressor.
Air Tank
Cylindrical component which contains the compressed air.
Check Valve
Device that prevents compressed air from flowing back
from the air tank to the compressor pump.
Cut-In Pressure
The low pressure at which the motor will automatically
restart.
Cut-Off Pressure
The high pressure at which the motor will automatically
shut off.
Electric Motor
Device which provides the rotational force necessary to
operate the compressor pump.
Manual On/Off Switch
Control which turns the air compressor on or off. The
pressure switch will not automatically start and control the
compressor unless the manual On/Off Switch is in the ON
(I) position.
NPT (National Pipe Thread)
National Pipe Thread is a U.S. standard for tapered (NPT)
or straight (NPS) threads used to join pipes and fittings.
A thread sealing tape must be used to provide a leak-free
seal on pipe threaded connections.
Pressure Regulator Knob
Regulates the outgoing pressure from the air outlet to the
tool. It is possible to increase or decrease the pressure at
the outlet by adjusting this control knob.
Pressure Switch
Automatically controls the on/off cycling of the compres­
sor. It stops the compressor when the cut-off pressure in
the tank is reached and starts the compressor when the
air pressure drops below the cut-in pressure.
PSI (Pounds Per Square Inch)
Measurement of the pressure exerted by the force of the
air. The actual psi is measured by a pressure gauge on the
compressor.
Pump
Produces the compressed air with a reciprocating piston
contained within the cylinder.
Regulator Pressure Gauge
Displays the current line pressure. Line pressure is adjust­
ed by rotating the pressure regulator knob.
Safety Valve
Prevents air pressure in the air tank from rising over a
predetermined limit.
SCFM (Standard Cubic Feet Per Minute)
A unit of measure of air delivery.
Tank Pressure Gauge
Indicates the pressure in the air tank.
Thermal Overload Switch
Automatically shuts off the compressor if the temperature
of the electric motor exceeds a predetermined limit.
TOOLS NEEDED
The following tools are needed in order to assemble the wheel kit.
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