Question about Ingersoll Rand - Rand - Ir 2545K10FP Type - 30 Electric Driven Air Compressor 10 Hp 120 Gallon Vertical - Fully Packaged

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Constantly releases 30psi of air into atmosphere before holding air in the tank

I've removed the plastic cap under the on/off switch to adjust the cut out to 90psi for the tank via the sprung bolt. The compressor will cut out at whatever psi I set it at but will then release a further 30psi of air via a hole directly under the switch housing that connects a thin bronze pipe to the tank (not via the relief valve which is separate and can be operated manually by pulling the end pin.
Why does it release 30psi before it will hold the air in the tank?
If at this point I don't immediately switch the compressor off at the wall, it will continue to release 30psi after cutting out then start again until 90psi is in the tank again before going thru the whole cycle of releasing 30psi again.

Please help me
Regards Peter Bellas
0400 850005

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IS THE AIR LEAKING FROM A SMALL LEVER ON THE SIDE WITH A TIRE STEM VALVE IN IT. IT HAS A SMALL COPPER OR PLASTIC LINE COMING FROM IT? THIS IS THE UNLOADER . IS SO YOUR INTANK CHECKVALVE MAY NOT BE HOLDING.

THE PRESSURE SWITCH IS TYPICALLY ADJUSTABLE FOR CUTOFF PRESSURE AND THE DIFFERENTAL (SPREAD) BETWEEN CUTIN AND CUTOUT

Posted on Mar 20, 2009

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Mine does the same damm thing , is it broke or can it be adjusted . It buggs the heck out of me.

Posted on Oct 23, 2008

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