Low Pressure Cutoff Switch Adjustment

How to adjust the pump pressure control switch using the square d pumptrol as an example.

Low pressure cutoff switch adjustment.

The cut on pressure is the low pressure that starts the pump and the cut off pressure is the high pressure that turns off the pump. You can adjust the differential by turning the short adjusting nut on the pressure switch clockwise to increase or counter clockwise to decrease the differential it s seldom required and i suggest you not tamper with this setting unless you know what. Square d pumptrol pressure switches are manufactured by schneider electric. Make sure you have unplugged the air compressor and remove the cover off the pressure switch.

If the cut on cut off is 40 60 psi is what the factory setting is on the pressure switch. A 20 psi differential is standard and recommended. This article 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. 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.

For over 75 years square d pressure switches continue to meet the needs of our customers. For the switches with an adjustable pressure differential there will be two setscrews. How to set the pump pressure control switch. The starting and stopping of a well water pump is typically controlled by a pressure switch similar to the one shown below.

In brief tutorials we explain how to set and adjust a typical pump pressure control switch. One for the cut in pressure and one for the cut out. We explain which adjustment nuts to turn and in which direction to change pump cut in pressure or cut our pressure settings.