Parts & Features - Craftsman 921.166420 Owner's Manual

Parts & Features
See figures below for reference
I Regulator _ _ Air intake Filter
The air pressure coming from the air tank is | | Provides clean air to the pump and must |
controlled by the regulator. To increase the pressure I | always be kept free of debris. Check on a |
turn the knob clockwise and to decrease the | [ daily basis or before each use. J
pressure turn the knob counterclockwise. "- J
Quick Connect
Offers a quick release feature for
attaching and removing the air hose.
I Tank Pressure Gauge _
Indicates the reserve air |
pressure in the tank. J
Outlet Tube
Pressure Switch
This controls the power to the motor and also
the cut-in/cut-out pressure settings. This
switch serves as the Auto-On/Off positions
for the unit.
Tank Safety Valve
Used to allow excess tank pressure to escape into
the atmosphere. This valve should only open when
the tank pressure is above the maximum rated
pressure.
Pressure Relief Valve
The pressure relief valve located on the side of the
pressure switch, is designed to automatically
release compressed air when the air compressor
reaches cut-out pressure. The released air should
only escape momentarily and the valve should
then close.
J
L.
I Tank Drain Valve
Used to drain condensation from the
air tank. Located at bottom of tank. _
I Check Valve "_
When the pump is not in operation the valve |
closes to retain air pressure inside the tank. An|
internal component.