Question about Ingersoll Rand Stationary Air Cooled Rotary Screw Compressor 10 Hp, 35 Cfm At 125 Psi, Model# Ep

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I installed a used Ingersoll-Rand SSR-EP30 yesterday. When it reaches set pressure (110) and unloads, the air pressure continues to gradually creep up until it shuts down on high pressure...approx. 145 psi. I do not have the operator's manual. Any suggestions? Thanks

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I've a ingersoll compressor ssr ep 20 which is shutting down on high airent temperature.

Posted on Jul 11, 2012


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I know you have checked voltage. However please remove the fuses for control power and check,also check fu4 and 5 16volt fuses. next check power on the controller input. Don't remember terminal # but if you look in electrical cover removed to gain access, a wiring schematic will be affixed to it. I think it's on j5 terminal 36 110volts. But please check the schematic first. If you have power at the input terminal I suspect the controller is bad but continue with the following checks. If no power at terminal 36 check the hat (High Air Temperature) switch. Its located on the end of the airend and about 1/2 inch flex connected.If the hat switch is good check the emergency stop contacts. Note the power lite picks up voltage before the emergency stop and hat switch. So even though the lite is on one of these switches may be bad.

Posted on Mar 28, 2011

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