Pressure Limit Switch Adjust

Take note of the pressure markings on the switch as you adjust the nut.

Pressure limit switch adjust.

Pump pressure switch pumptrol nut adjustment sequence. This setting adjusts the pressure level at which the pump shuts off. The cut in and cut out pressure. In brief tutorials we explain how to set and adjust a typical pump pressure control switch.

Home blog how to adjust a pressure switch. The switch is preset with both the cut on and cut off pressure. Adjust the range nut first then adjust the differential nut second. Just adjust the tall nut as you can see in the photo.

Schneider electric the manufacturer of the square d pumptrol pressure control switch warns that when adjusting the pressure control settings it is important to make the adjustment in the proper sequence. How to adjust a pressure switch. These are the cut in and the cutout. The starting and stopping of a well water pump is typically controlled by a pressure switch similar to the one shown below.

Before i discuss how to adjust the pressure switch let me cover the two points. Starting here with advice about correct problem diagnosis of water pressure problems this article series describes how to adjust building water pressure by setting the water pump cut in and cut out pressure on the well water pump pressure control switch. These two pressure set points define the pressure at which the air compressors will engage and begin to create pressurized. Adjust the long thread nut in the pressure switch to the right to increase pressure each complete turn should increase the pressure about 1 1 2 lbs you should no need to adjust the short nut that s the differential and is factory set at 20 lbs let it be.

The air compressor is built with two pressure set points.