The switch is preset with both the cut-on and cut-off pressure. Square D Pumptrol 40-60 PSI Well Pump Water Pressure Switch with Low Pressure Cut-Off - Box Packaging (46) Model# FSG2J24M4BP $ 22 99. Worked for about a minute and cut off. The starting and stopping of a well water pump is typically controlled by a pressure switch similar to the one shown below. I lifted the pressure switch lever to get the pump going. To check if your water pump itself is working, you could connect the 2 wires that are connected to the switch, with each other, so that you close the electrical circuit. 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. Square D 30-50 psi Pumptrol Well Pump Water Pressure Switch - Box Packaging x 6-in. The tank was empty and the gauge was basically down to 0 PSI. It might also be that your pressure switch unit is just defect. Pressure switches rely on water pressure to do all the work. I tried the lever again and it engaged the contacts but then quickly disengaged. galvanized nipple. 30/50 Low Pressure Switch for Well Pumps This pressure switch signals the pump to This pressure switch signals the pump to start when the water system drops to 30 psi (factory set) and stops at 50 psi (factory set). The change in pressure that activates the switch is provided via the water from the well. When the pressure in the system drops to a preset low setting the pump will turn on (commonly known as the cut-on pressure). Always replace your switch with one of the same rating (usually printed inside the plastic cover of your old switch). Also buy a new pressure gauge (less than $10) and a 1/4-in. Shop water pump accessories and a variety of plumbing products online at Lowes.com. I have a cheap water pump that has been working faithfully for the last 4 years but this year, when I turned it on for the first time, I go… There could be other reasons why this is happening, such as a decompressed pressure tank or a failed pump. If you have a private well water system, your Pressure Switch is an integral component. Switches come in three pressure ranges: 20 to 40, 30 to 50 and 40 to 60 psi. The circuit for the well pump was not tripped. The usual range is 40-60 PSI. Find Pressure switch water pump accessories at Lowe's today. Water pressure was around 10 PSI. The pressure moves up through the diaphragm which presses against a piston and spring, which in turn opens or closes the contacts. It … Square D Pumptrol 60-80 PSI Air Compressor or Well Pump Pressure Switch with higher hp ratings (13) Model# 9013GHG2J25 $ 91 54. This switch is to be used with submersible well or jet pumps. 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