Question
QUESTION: Hi,

We have a GE pump (older model). 1.5 HP 220 watts that pumps water from the lake to water our lawn. Before hooking up the hoses and sprinklers I was testing it out. I primed the pump, opened all the spigots and turned it on. The pump comes on and pumps water - - for about 3 minutes - - and then cuts off. If I wait a few minutes and try again it does the same thing.

Any ideas on what could be causing it to cut off?

Thanks so much. I really appreciate any help you can provide.
ANSWER: I take it that tthere is not a pressure tank on the system, that it pumps directly into the irrigation system.  In this case, I would think you have an electrical problem with the pump that is causing it to shut off prematurely.  If there is a pressure tank on the system, you may have a problem with the pressure switch that regulates the pump.

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QUESTION: Correct, there is no tank. Direct in line pump and no pressure switch. Any recommendations on how to trouble shoot the electrical issue? I am assuming you are talking about a bad relay?  

Answer
Yes, it could be a relay, or a problem in the pump motor.  Sometimes when the brushes on the motor get worn, the pump will work for a while, then when it heats up, it stops running.  For some motors the brushes can be replaced, others not.  I suggest you have a service person examine it.