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  1. #1
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    Pump cycling problem/pressure loss

    Hi all,

    Fairly new to being on a well and need some advise on a problem.
    Have a submersible pump approx 12 years old, a 2 year old Flotec bladder tank and a pressure swich setting of approx 40/55. Pump has been cycling with no water usage - I isolated house/irrigation system from line - pressure still drops, to zero given approx 2 hours when breaker turned off. Tank shows 20psi when empty, no leaks detected around tank, pressure switch or pump/piping itself.I am hearing water hammering when the pump cycles. Where's the best place to start? I do have a check valve at the well head, should I replace it? Line from pump to house is underground but fairly short ((30ft) Any help would be appreciated.

    Joe

  2. #2
    Pump guy speedbump's Avatar
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    Hi Joe,

    Chances are, your bladder tank is waterlogged. Flotecs last on average 1.5 years in my experience. Try pushing it sideways a little to see if it's heavy after turning off the pump and letting all the pressure out of the faucets. If so, it's shot.

    Your switch should have at least a 20 lb. differential, so a little tweaking may be in order. You should also have two pounds less in the tank than where the pump kicks on.

    bob...


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  3. #3
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    Thanks Bob, I'll check the tank tonight. One other question, if it is the tank, where is the water going from all the pump cycling?

  4. #4
    Pump guy speedbump's Avatar
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    If it's completely waterlogged, meaning very little air left, it would only take a cupful or so to restart the pump. You may have a small leak somewhere. A toilet is a good place to start looking. They can leak so slowly that you won't see the water move, but it will recycle the float for a few seconds to top the tank off again.

    bob...


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  5. #5
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    I don't think so - the pump drops to the low pressure cutoff (40psi) and
    does a full fill cycle again and again,(to about 55psi) and this is with the entire house isolated, so I know its not a toilet, faucet of slab leak. I am also thinking pipe leak or maybe bad check valve?


  6. #6
    Pump guy speedbump's Avatar
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    All are possible. How quickly does it shut off once it starts? In minutes or seconds.

    bob...


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  7. #7
    quote: I isolated house/irrigation system from line - pressure still drops,
    I'm assuming there's a valve you can shut to isolate the house, etc?

    Bob, wouldn't this put his problem outside the house ?

    Is it possible that his foot valve or drop pipe is leaking ?

    And the check valve ? Is this a remnant of previous galvanized tank installation that wasn't removed when the system was upgraded to a bladder type tank ? Should it be removed ?

    (I'm also a slow typist! Otherwise, there wouldn't have been answers to some of the questions before I hit SEND! )


    I'm learnin' too, that's why I ask so many durn questions! [?] [(#)]

  8. #8
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    Bob,

    The pump cycle last about 40 seconds which is normal for a refill cycle.

    Joe

  9. #9
    I would start at the check valve if your pump does not have one on it. If that does not work I would say you have a hole in your drop pipe.

  10. #10
    Joe, I just noticed that you said you only have 20 PSI on the air side of the tank ?? If your low cut in is at 40 PSI on your switch, then you need 38 PSI in the tank. But, that still doesn't explain the pressure loss...

    JB

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