Water Source 20/40 Well System Pressure Switch 126579

This Water Source PS2040 Well System Pressure Switch signals the pump to start when the water system drops to 20 PSI (factory set) and stops at 40 PSI (factory set). This well pump pressure switch is to be used with submersible well or jet pumps. It can be wired 115-volt or 230-volt. This pump pressure switch must be used in conjunction with a well pressure tank. The air pressure in the well tank, when empty of all water, must be set to 18 PSI, or the switch will not operate properly. Signals the pump to start when the water system drops to 20 psi (factory set) and stops at 40 psi (factory set). Can be wired 115 volt or 230 volt. Well pressure pump switch for use with submersible well or jet pumps (that can create up to 40 pounds of pressure). Motor wires are connected to the 2 middle posts (color does not matter). Breaker box wires are connected to 2 outside posts (color does not matter). 2-spring design allows for adjustment of cut-in and cut-out pressure settings. Adjustments to springs should only be made by users with good knowledge of well systems. Tank must be in good condition in order for pressure pump switch to work properly.