Low Pressure Cutoff Switch Adjustment

How to set the pump pressure control switch.

Low pressure cutoff switch adjustment.

For over 75 years square d pressure switches continue to meet the needs of our customers. How to adjust the pump pressure control switch using the square d pumptrol as an example. We explain which adjustment nuts to turn and in which direction to change pump cut in pressure or cut our pressure settings. A 20 psi differential is standard and recommended.

For the switches with an adjustable pressure differential there will be two setscrews. One for the cut in pressure and one for the cut out. Make sure you have unplugged the air compressor and remove the cover off the pressure 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.

The switch is preset with both the cut on and cut off pressure. Steps to adjusting the air compressor pressure switch. In brief tutorials we explain how to set and adjust a typical pump pressure control switch. 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.

If system pressure is lost for any reason a low water condition for example the automatic lower pressure water cut off feature will open the contacts turning off the pump. Square d pumptrol pressure switches are manufactured by schneider electric. If the cut on cut off is 40 60 psi is what the factory setting is on the pressure switch.