After my tank reaches max. psi the motor shuts off but air leaks out?

by Mark
(Canada)

I have a 3 piston compressor 150 psi max. The compressor builds pressure to 150 than the motor shuts off normal. But when the switch turns off the motor a lever is pulled up that pushes a schraider valve (which is connected to a small plastic line that goes to the tank) and bleeds air from the tank until the pressure goes to low and the compressor has to turn on again. Could the pressure switch be wired up wrong or is it just broke. HELP


__________________________
Bill says...

The Schrader valve that opens when the switch cuts off electricity to the motor to stop the compressor is doing exactly what it's supposed to.

It's supposed to open and dump the air pressure over the top of your cylinder(s) to make the compressor restart easier on the motor.

You have a leak.

This page tells you why.

Cheers,

Bill

Comments for After my tank reaches max. psi the motor shuts off but air leaks out?

Click here to add your own comments

Jun 09, 2010
Finding Leaks
by: Anonymous

Take some soapy water in a spray bottle and spray all connections. A leak will appear immediately.

__________________

That's good advice for finding a leak in any compressed air line.

Thanks,

Bill

Click here to add your own comments

Add your own question or comment. It's easy to do. How? Simply click here to return to Compressor Pressure Switch Problem.