Water pressure switch suitable for installation in pressure units. It automatically ensures the start and stop of the electric pump according to the pressure values we have set.

Adjustment

Inside the pressure switch, there are two springs with nuts. One large and one small.

• The large spring adjusts the starting pressure of the pump. The more we tighten the nut, the more we increase this pressure. From the factory, it is set at 1.8bar. That is, the pressure unit will start operating when the water pressure is below 1.8bar.
• The small spring adjusts the pressure differential. That is, the difference between the starting pressure of the pump and the stopping pressure. From the factory, this differential is set at 1.4bar. That is, if our pump is set to start at 1.8bar and the differential is 1.4bar, then the pump will stop when the water pressure reaches 1.8 + 1.4 = 3.2bar. The more we tighten the nut of the small spring, the more we increase the pressure differential.