How to Locate & Use the Water Pump Relay Switch
Where will I find the pressure control switch and where is the pump relay switch?
The water pump pressure control switch (orange arrow in photo at below left) and the pump relay switch (below right) are two different devices. As we explain below, all well pump systems require a pressure control switch to sense the water pressure and turn the pump on and off as needed. But when a higher horsepower submersible pump is used, a separate pump relay (red arrow in photo below right) is used to actually control turning the pump on and off.