idrob
Registered: December 2004
Location: Central Idaho
Posts: 24
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This is the interior of a Penn air pressure switch. To raise the cutout setting (will also raise the cut - in setting) turn the range nut clockwise. The range nut is the one with the spring under it, closest to the outside or bottom of this photo. To raise the cut in setting only turn the cut in screw counter clockwise. The cut in screw is between the terminals labeled \"line\" near the top of the terminal block which is rather out of focus in this photo.
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