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Thread: Well pump will not build enough pressure to cut out

  1. #1
    DIY Junior Member Mrk3cobra's Avatar
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    Default Well pump will not build enough pressure to cut out

    I have a GE deep well jet pump 1/2 HP. With a square D 30/50 cut out switch. The pump use to cut out at 50 psi and now the pump will only produce 43 psi and does not cut out. The well is only 18 feet deep. I replace the foot valve last year. The pump has two hoses that go down to the bottom of the well.

    How to test if the low pressure is caused by the pump or the ejector at the bottom of the well?

    Thanks, pete

  2. #2
    DIYer, not in the trades LLigetfa's Avatar
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    Clean the jet port. If that fixes it, it was the ejector.

  3. #3
    DIY Junior Member Mrk3cobra's Avatar
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    Ok I pulled the Injector, what I see is a small plastic funnel on the 1 1/4 line. There is a 1/4" hole at the bottom of the funnel. There is sand packed around the plastic funnel. This is the first time I have seen an injector so I am not sure how they work. Is the water pulled up through the 1 1/4 line through the small hole, and water shot down the 1" hole.

    What do I look for if the small 1/4" hole is open.

    Thanks, pete

  4. #4
    DIYer, not in the trades LLigetfa's Avatar
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    Water is forced upward through that 1/4" hole in the bottom of the funnel. Water goes down the 1" pipe and up the 1 & 1/4" pipe.

  5. #5
    DIY Junior Member Mrk3cobra's Avatar
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    So if the 1/4" hole is open the injector is good?

    Pete

  6. #6
    DIYer, not in the trades LLigetfa's Avatar
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    As long as it is not otherwise gunked up with sand. I presume you cleaned the sand out?

  7. #7
    DIY Junior Member Mrk3cobra's Avatar
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    Does all the water go through the 1/4" hole in the center of the funnel? Does some water go around the outside of the funnel?

  8. #8
    DIYer, not in the trades LLigetfa's Avatar
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    The old water goes through the 1/4" hole. New water from the footvalve goes around the funnel.

  9. #9
    DIY Senior Member Reach4's Avatar
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    http://www.youtube.com/watch?v=U0wGhmvhChU seems to have a good animation.

  10. #10
    DIY Junior Member Mrk3cobra's Avatar
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    We're do I buy a new injector online, and how to do I size the injector with my well setup.

    Thanks, pete

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