Bostitch CWC100 Quick Start Manual page 5

CWC100
CYLINDER HEAD UNLOADER VALVE:
When the air tank has reached the shut off pressure and the compressor has stopped,
this valve bleeds off the air remaining in the tank fill pipe and cylinder head unloader
valve. This valve releases excess air pressure to ease restarting of the compressor.
If there is difficulty in restarting, The Cylinder Head Unloader Valve can be dismantled
and cleaned.
Cylinder Head Unloader Valve
DRAIN VALVE LOCATION:
On the current model, the Drain Valve is located
near the side of the tank. It is a small threaded tee
handled valve, part # 7130280000. Drain valve
has 1/4" metric pipe thread.
On these older style units, the drain valve was
located in the center bottom of the tank, and had
very large threads. This part is no longer available.
Refer calls to Service Centers.
TO REBUILD CWC100:
To improve the pump up time, replace the following parts:
Gasket Kit
Reed Valve Kit
Piston Ring Kit