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Thread: Well pump electrical setup

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  1. #1
    DIY Junior Member prayingmantis287's Avatar
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    Default Well pump electrical setup

    Hi guys. There's a bit of a background to what I'm hoping to accomplish, but I'll try to keep it to the point. My wife and I bought a house about a year ago and the 6" casing well was nearly unusable. The well only supplied about 30 gallons per day, so the previous owners installed a 300 gallon storage tank in the basement. They would need to get a load of water with a portable tank to fill the storage tank every few days. We had to do the same when we bought the house. The way the system works is the submersible well pump pumps the water into the storage tank, which is then pumped from the storage tank to the pressure tank via a jet pump. We had a new 12" casing well drilled in the fall (still low yield, but we don't need to bring in water anymore). What I'd like to do is hardline straight from the well to the pressure tank the way it should be, but also leave the option of switching over to the storage tank if needed. I have the plumbing part mostly figured out, but I can't wrap my head around the wiring for this. Currently, the storage tank has a float switch governing when to turn the well pump on which is wired into a Pumptec. The jet pump has a pressure switch mounted on it serviced by a direct 12-2 line. I plan on adding a pressure switch onto the tank tee (which would take responsibility of the pressure for the hardline setup). I have a 30amp double-pole double-throw switch Id like to use to select which switch (the float switch or the new pressure switch) is going to be used to control the well pump turning on and off.
    The most I was able to think of so far is the following diagram (Im not an electrician by any means, so I may be completely wrong). There are also a few pictures below to see what the setup is like. I also need to look into removing that voltmeter sticking out the side of the Pumptec . I can provide more details and pictures if you need.

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    Last edited by prayingmantis287; 04-03-2013 at 03:53 PM. Reason: Diagram Updated

  2. #2
    DIY Junior Member prayingmantis287's Avatar
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    Diagram updated

  3. #3
    Moderator & Master Plumber hj's Avatar
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    UNLESS the storage tank ALWAYS stays filled regardless of how much water you use in the house, the pump will NOT provide enough water in "real time" to keep the pressure tank filled. The purpose of the storage tank is to use the 'small flow' as long as necessary to fill the storage tank and the "jet pump" can then fill the pressure tank "quickly", while the well pump lets the storage tank refill slowly.

    You need an additional switch to control whether the float switch is activating the main well or jet pump, and also a "3 way valve" to divert the well pump's discharge to either the storage tank or the pressure tank, and another valve to prevent the pressure tank from "backflowing" into the storage tank,overflowing it, in case a check valve doesn't hold.
    Licensed residential and commercial plumber

  4. #4
    Electrician ActionDave's Avatar
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    Why is it that you are unhappy with the present set up? It is very common to have a well pump, cistern, and jet pump.

  5. #5
    DIY Junior Member prayingmantis287's Avatar
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    HJ- Thanks for the plumbing tip. Im not positive, but I think the recovery is sufficient now to revert to a normal setup. When we had the house inspected before purchase, the inspector said he had never seen a setup like that around here. In regards to allowing the well to slowly recover by using the storage tank, I'm concerened about its actual effectiveness. I understand the principal of having this setup, but I have the float switch tethered at it shortest length and it still has to fill almost four pressure tank cycles at one time between its on and off position.

    ActionDave- It honestly weirds me out that I have a "stagnant" tank of water without a chlorine injection system. I could install one, but coming from living in the city to rural living I like not having the chlorine in the water. The one other qualm I have with the cistern is it has developed a layer of algae on the inside due to the tank being located near a window.

    Let me know what you guys think.

  6. #6
    Electrician ActionDave's Avatar
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    Layer of algae. Yuck. I wouldn't want that either. If you did your own chlorine it could be a lot less than what a municipal treatment plant would use.

    The well pump is 240V, yes? What is the voltage of the jet pump?

  7. #7
    DIY Junior Member prayingmantis287's Avatar
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    Quote Originally Posted by DonL View Post
    Does that mean that you still have problems ?

    Or did you do some Cocaine ?
    No 8-balls here, but yeah, I'm still trying to figure this out.

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