Question about Ingersoll Rand Type 30 Fully Packaged Ir Electric Stationary Air Compressor No. 2475N7.5FP 7.5HP. 80 Gallon Vertical Two Stage

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Unloader valve keeps opening and closing during pump operation. does not give a continuous discharge, as when the ball valve is stuck open. seems that when the pump reaches max output pressure that the unloader discharges the pressure from the pump, then closes until the max output pressure is reached again.

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Sounds like the cutoff valve is failing to cut power off to the compressor drive motor, while it activates the unloader.--- I'd consider looking closely at the contacts, or replacing the cutoff.

Posted on Nov 24, 2009

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