AIR VALVE ON COMPRESSOR POPPING OFF

AIR VALVE TO LET PRESSURE OFF HEADS FOR START UP WILL POP OFF EVER 10 SECOND UNTIL COMPRESSOR STARTS BACK UP.

---

Bill ponders...

Hmmm. Let me see?

When the compressor motor is off, usually the unloader valve (often part of the pressure switch) is open to atmosphere to allow the pressure over the piston heads to bleed to atmosphere.

When the motor starts, the unloader valve is supposed to close, allowing pressure to build in the cylinder(s) and compressed air to flow into your tank.

Are you saying that the unloader valve is venting air to atmosphere now and again while the compressor is off?

Or, are you saying that the PRV (pressure relief valve) is opening and closing during this period.

I'm guessing that it's the unloader valve that's blipping air out, and if that is the case, then I suspect your check valve in the line going into the tank from the compressor head isn't seating fully, and it's leaking air from the tank out through the unloader valve. That's not supposed to happen,and the check valve's purpose is to prevent exactly that.

Cheers, and thanks for writing in.

Bill