Pressure Switch

how can I tell if my pressure switch is faulty?

I bought a new jet pump. Has a new pressure switch attached. When it was hooked up the pump never stopped. Tried adjusting the switch as per the instructions but nothing happened. Have to turn the pump off every time we are finished using water. The foot valve seems okay as it is not losing pressure.
Any help would be appreciated.

the only way to tell is to turn the pressure switch all the way down and see if it makes the pump shut off if not then the witch is bad switches for those pumps are only 20 bucks but if its a new pump they should replace it. also did you check the plastic line that goes inside of the switch? if that is clogged or kinked it wont allow it to push up on the diaphragm breaking the points to shut it off.

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