[Solved] The hydrophore does not turn off, it works all the time at the same pressure

I have the same problem!
It is a small hydrophore on the plot. 20 l
It pumps up to 2 atm without any intervention and does not turn off.
I had to turn off the power.
Where should I look for the cause?

Moderated By krzysiek7:

3.1.19. Do not send messages on archival topics if this is another question, in particular other than the questioning person. Out of respect for the questioner, create your own topic. You can only add a solution to the problem.
I separated from the topic: https://www.elektroda.pl/rtvforum/topic2739175.html

1) Defective pressure switch
2) Pump has lost capacity and is not pumping as much as it used to
3) little water in the well and goes with air (doubtful)
4) leakage and what it pumps immediately spills out, so it doesn't reach pressure due to capacity

jozefpz wrote:

Without any interference it pumps up to 2 atm and does not switch off.

jozefpz wrote:

Where should I look for the cause ?

If it switched on by itself and no one was taking water, then it was either on the verge of switching on, i.e. as if you were taking water it would immediately switch on, or it is escaping somewhere. Where ? Maybe back into the well, - then the check valve is to blame, or the suction basket (or both). If the pump doesn't want to turn off, then again there are a couple of possibilities-it's not drawing water, so it's not making pressure, or the pressure switch is out of adjustment(by itself?, or someone messed with it). There could also be other problems, e.g. water deep in the well, because it's dry , and then the pump "can't cope".

Thanks for the advice! It was the pressure switch's fault.
Nobody touched it before.
I adjusted the relay spring.
She made a larger hole on the hook.
(the hydrophore is already several years old)
So a little bend of the tab solved the problem.

Tegulation of the pressure switch (flap spring).