Pressure Limit Switch Adjust

The cut in and cut out pressure.

Pressure limit switch adjust.

How to adjust a pressure switch. Home blog how to adjust a pressure switch. Posted on friday may 18 2018 by dave nelson. The switch is preset with both the cut on and cut off pressure.

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. How to set the pump pressure control switch. 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. These two pressure set points define the pressure at which the air compressors will engage and begin to create pressurized.

Adjust the range nut first then adjust the differential nut second. In brief tutorials we explain how to set and adjust a typical pump pressure control switch. Step 3 turn the smaller spring clockwise to increase the cut out pressure on the goulds pump or twist counterclockwise to lower the pressure. 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.

Before i discuss how to adjust the pressure switch let me cover the two points. The starting and stopping of a well water pump is typically controlled by a pressure switch similar to the one shown below. This setting adjusts the pressure level at which the pump shuts off. The air compressor is built with two pressure set points.

Pump pressure switch pumptrol nut adjustment sequence.