Question about Ingersoll Rand Type 30 Reciprocating Air Compressor 5 Hp, 80 Gallon, 230 Volt 3 Phase, Model# 2340N5

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I have an IR Air Compressor #SS3 E. It want stop running/building up pressure. I am sure its the pressure relief valve, but there are 2. One at the presure regulator and the other at the pump and motor.How do you diagnose this problem-instead of just replacing parts? I have oiled the valves and they move fine manually. Or could there be something with the presure regulator-there are no adjustments on it? The manual is useless. Thanks Michael

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If it is lifting both valves I would say that the pressure switch (regulator as you call it) is defective, if you try to shut it off using the manual switch and it keeps running, I would say that the switch is welded shut. if it does not shut off by 125 psi then it is faulty. The pressure switch is what controls the motor in response to pressure in the tank.

Posted on Feb 01, 2010

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Order pump parts from grainger. The other parts can be replaced with generic grainger parts such as the pressure switch, check valve, capacitors etc. for the motor. If you are having a specific issue with your unit please detail the problem on your next post or email me. I will be glad to work thru the problem or modification. Good Luck!

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