The reasons for the pressure drop in the pumping station

After a power surge in the pumping station, the pressure does not rise above 1.0. Changed the check valve - no change. What else can you do?

Andrei.

Expert Answer

Hello Andrei.

You write that trouble with a drop in pressure happened after a power surge. It would be more logical to begin the search for the cause of the malfunction by checking the electrical components of the water supply system, namely the pressure regulator or dry-running relay. It is possible that the contacts of the power part of these devices are burnt out or the details of their mechanical components are damaged (for example, the spring of a switching-regulating device burst or rusted). In addition, at least the most primitive pump diagnostics should be performed. To do this, disconnect the pressure pipe from the accumulator to check the pressure of the unit and its performance. Even a simple measurement of the amount of water that the pump can pump per unit of time will help. Comparing the result with the technical characteristics of the unit, you can at least approximately evaluate its performance.

At the same time, one cannot exclude the likelihood that the appearance of a malfunction after problems with power supply is a simple coincidence. In this case, the decision to replace the check valve was correct. In addition, you should check the integrity of the line on the way from the pump to the accumulator. Perhaps the cause of the pressure drop was damage to the pipe or loss of tightness at the pipe joints or fittings.