Testing Pressure Relief Valves on Quincy compressor
I was checking the PRV's on our Quincy 5HP Two-Phase 80 gallon compressor. There is one on top of the motor, one at the top of the tank, and one on the side of the tank where the pressure gauge is. I pulled on all three, but only the one on the side of the tank released air, then I pushed it back in. The other two pulled out, but automatically pulled back in, not releasing any air. The motor was not running at this time, but the pressure gauge did read 150psi. Does the motor have to be running and building pressure for the other two PRV's to release air when testing?