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