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Thread: Pump cycling

  1. #1

    Pump cycling

    I have a 170' well that is very slow in producing.
    This normally would not be a serious problem if the well did not also have a dissolved clay problem, that gets worse over time.
    We may not use the well for anywhere from several days to a month.
    After the well sits idle, the water becomes so cloudy with dissolved particles, my sediment tank and sand filter cannot clean it. It can actually become muddy.
    Depending on the length of time the well has set idle, I have to run the pump for anywhere from 4-6 hours to several days b-4 it gets clear enough for my system to produce useable water. After the first pump down, the well will pump about 15 gallons, then run dry and shut off via a sensing switch (the name of the switch escapes me), and is set to cycle back on after 10 min rest. I have a 7gpm pump with a (i think) 4 gpm dole valve. Sorry to put you through all of this, but my question is - is this procedure (so much stopping and starting) bad on the pump motor, and do you have any suggestions?


  2. #2
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    Have you had an iron test done? Something that is dissolved into the water wouldn't allow you to see it.

    When you get the dirty water trough the equipment, is the water from the well before the equipment clear or dirty? And if you run it until it is clear, why did you need the equipment? Has the equipment ever produced clear water? How old is the equipment? What size tanks? What mineral/media is in the tanks? How much mineral/media in each tank and in what order from the well are they plumbed?

    Are you running out of water in the well to make the pump shut off?

    Gary
    Quality Water Associates
    www.qualitywaterassociates.com
    Softener Forum

  3. #3
    Pump guy speedbump's Avatar
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    It honestly sounds to me like this is not a usable well. I don't think anything can be done to make it better.

    You may be looking at drilling a new one after some research into the reputation of the drillers in your area to pick the best one.

    bob...

    Products and Pricing

  4. #4

    Bob: I hear you, but unfortunately the well is what it is, and it does produce clear h2o eventually.

    Speedbump: The water directly from the well varies from muddy to cloudy, depending on how long the well has gone without being pumped on. Cloudy being loosing sight of the bottom of a 5g bucket when it is 1/3 full. My treatment system can take care of the cloudy water, but not the muddy. I never get clear water directly from the well.
    My system consists of an alum injector, air injector, 350 gal sediment tank, and a 5'X1'dia auto back flushing mineral tank,in that order. If time were not an issue, no matter what condition the water from the well was, the particles would eventually percipitate out, but it would take a pretty big sediment tank, therein the filter equipment to speed things up.
    Yes, the well runs out of water when I constantly pump on it to clean it up. It produces a steady 1.5g, which is generally not a problem, because of the approx 120' of h2o above the pump in the casing, but pumping on it at 4gpm, it eventually runs out.



  5. #5
    Pump guy speedbump's Avatar
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    I don't understand what sitting idle has to do with it clouding up.

    If I remember from my Water Plant Operators course of years ago, Alum is used to coagulate. So they are injecting it into the water stream so that the filter can try to remove it. I wonder what media is in that filter? I also wonder if a larger filter with a finer media wouldn't do a better to excellent job of removing the sediment. Then it could be backwashed out.

    It certainly wouldn't hurt to have as large of a cistern as you can possibly have to help settle out as much as possible and to give you a reserve for backwashing and usage.

    bob...

    Products and Pricing

  6. #6
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    Colloidal matter will not settle no matter how long you let it sit.

    Have you ever had any water tests done and if so what were the results?

    A sand filter is not a good choice, especially if you have iron. There is much better media available.

    Is the "muddy" water rust colored?

    Dissolved clay would be invisible.

    The cloudy is more likely from drilling mud in a well that was not developed very much.

    If the well can only produce 15 gallons before the pump shuts off, you can't properly backwash any filter. So have you bypassed the filter to see if the cloudy isn't coming out of the filter? It will if not backwashed properly.

    The model number on the tank label will tell you the size of the tank, like 1054 is a 10" x 54" used for a 1.5 cuft filter. The label is somewhere on the straight sides of the tank.

    Gary
    Quality Water Associates
    www.qualitywaterassociates.com
    Softener Forum

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