AIR ESCAPING FROM PRESSURE SWITCH

by STEVE
(CONTOOCOOK NH )

INGERSOL RAND COMPRESSOR WITH PRESSURE SWITCH 1R 56288772-02


IS THEIR A NEEDLE VALVE INSIDE THE PRESSURE SWITCH?

WHEN I SHUT OFF THE BREAKER I CAN MANUALLY TRIP WHICH I BELIEVE THE UNLOADER VALVE AND THE AIR STOPS EXCAPING WHEN THE BREAKER IS ON

THIS SWITCH CALLS FOR AIR AND TURNS ON THE AIR COMPRESSOR CAN YOU DIRECT ME

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Steve, you cover a bunch of stuff in your post, and I'm not sure what model of IR you have.

The first thing I would do is dump the tank air with the compressor off, pull, disassemble, clean and reinstall the tank check valve. Does that make any change?

Cheers,

Bill

Comments for AIR ESCAPING FROM PRESSURE SWITCH

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Feb 17, 2012
Leaking check valve
by: Steve

IR part 56288772 pressure switch check valve has a small pin in the center of it and it does not seem to go far enough to hit the little mechanical part that stops air from escaping. Can you direct me as to find a new check valve for a T-30 compressor
Email: datfm@comcast.net
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The valve you refer to is, I believe, the unloader that you referred to in an earlier post. IR is a huge company, and getting to parts is difficult, I know. If you Gooogle spare parts for an IR T-30, as I did, you will find a number of sources. I don't know any of them personally.

Feb 17, 2012
Pressure Switch
by: Steve

Noticed that their is an air line that comes into the pressure switch and a check valve attached to it. Their is a small pin that protrudes out to push a mechanical lever that stops the air. It seems that this little pin does not go out far enough to entirely stop the air it does not miss by much. Any suggestions
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Typically, the pin on the side of the pressure switch depresses the pin to open the air from over the piston. That stays open until the pressure switch trips to allow power to the motor to start the compressor, and as the pressure switch trips, the lever on the switch releases the pin on the unloader, allowing it to close. You should be able to adjust the unloader valve in its mount to realign it properly.

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