If you have a private well water system, your Pressure Switch is an integral component. The Pressure Switch tells the pump that delivers water to your home when to turn on and off. When the pressure in the system drops to a preset low setting the pump will turn on (commonly known as the cut-on pressure). When the pressure in the system rises to the preset high setting the pump will turn off (commonly known as the cut-off pressure).
For most homeowners, your Pressure Switch is preset at 40/60. At 40/60 the pump will turn on when system pressure reaches 40 psi (pounds per square inch) and turn off when system pressure reaches 60 psi.
If you suspect that your Pressure Switch is defective, I recommend the following: Give the Pressure Switch a comprehensive visual examination for defects and wear. Look for deformation, burned or melted components, or a lot of blackness. Keep in mind that the Pressure Switch is a key element to a properly working system and they are relatively inexpensive. I recommend replacing them rather than trying to repair them. Check the nipple or tube leading to the switch for sediment or debris (the power must be disconnected and all system pressure relieved prior to checking). Check that the contacts are opening and closing properly by turning on the system. For example, the contacts will close at 40 PSI and open at 60 PSI on a 40/60 switch.
Caution! Electricity can be very dangerous, especially if you are inexperienced. Always use caution working with electricity and turn off power supply breakers when testing components within the electrical system. If you are not 100% confident you can perform any of these tests safely, call a professional.
Hopefully this blog has given you some insight into your system. You can also check out our videos titled “Square D Pressure Switch” and “How To Adjust a Pressure Switch” on the RC Worst YouTube Channel by clicking on the hyperlinks below.
Square D Pressure Switch
How To Adjust a Pressure Switch
Looking for other tips on components or troubleshooting your well water system? Check out the RC Worst YouTube Channel for more videos or call give our experts a call at 855.329.4519. .