Pressure Limit Switch Adjust

These are the cut in and the cutout.

Pressure limit switch adjust.

The cut in and cut out pressure. The switch is preset with both the cut on and cut off pressure. Home blog how to adjust a pressure switch. Take note of the pressure markings on the switch as you adjust the nut.

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. This setting adjusts the pressure level at which the pump shuts off. How to adjust a pressure switch.

These two pressure set points define the pressure at which the air compressors will engage and begin to create pressurized. The starting and stopping of a well water pump is typically controlled by a pressure switch similar to the one shown below. 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.

Adjust the range nut first then adjust the differential nut second. Posted on friday may 18 2018 by dave nelson. Before i discuss how to adjust the pressure switch let me cover the two points. In brief tutorials we explain how to set and adjust a typical pump pressure control switch.

How to set the pump pressure control switch.