Confused by pump controller

Discussion in 'Water Fed Pole Cleaning' started by Beccy, Aug 15, 2015.

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  1. Beccy

    Beccy Active Member
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    Recently my system had been playing up. Towards the end of the day, on three different days, the pump had been stopping and starting, so by the time I've scrubbed the window, it's stopped and I have to wait 30 seconds or so and then it starts again for just about long enough to rinse.

    When I go back to the trailer, the pump controller is saying that the battery is at around 9.5V which would explain the problem, but two things don't make sense...

    1. The battery has an inbuilt charge indicator that says it's fully charged

    2. When I put multimeter on it it says 12.75V.

    I charge the battery after every working day with a charger that switches to a maintenance charge once the battery is full, the battery is only about a year old and I work part time so is hasn't been excessively used.

    Could it be a problem with the controller rather than the battery?
     
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  2. rafawindowcleaning

    rafawindowcleaning Well-Known Member
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    Hi Beccy have you any other battery to try? Although it seems unlikely that it is your battery its worth checking about two years ago I had exactly the same symptoms water flow was stopping and starting and it turned out battery was shot.
     
  3. peter rogers

    peter rogers Grand Master
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    wat sort controller is it were u buy it ?? i upgraded controller and it has built in charger but has to be hooked direct to van bat to charge it as wel as hook upto the leisure bat
     
  4. spruce

    spruce Grand Master
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    If the battery is fully charged then I would look for a bad connection from the battery to your controller on both the positive and negative sides.

    We started off with crocodile clamps on the battery terminals which didn't work very well so changed those to proper battery clamps.
    Another issue can be any joins in the cable and a notorious place is the fuse holder. If the blades of the fuse aren't making proper contact in the holder, then this will cause a resistance and reduce voltage. It will also generate heat at that point.

    If you have a Spring controller, Spring recommend that you leave your pressure switch in place as added protection. I've come across a faulty switch which has played havoc with the controller. In the case I'm referring to we 'removed' the pressure switch from the circuit and the controller started behaving as it should. (We 'removed the switch by unplugging the two red wires (Shurflo pump) from the pressure switch and joined them together.)

    It might also be worth unscrewing the 4 screws that hold the front panel on of the controller and look at the plug that connects your battery and pump to the controller's PC board. If it looks burnt then this could be the problem. Please disconnect the battery terminal before you do this.
     
  5. spruce

    spruce Grand Master
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    If memory serves me correctly, Becci doesn't have a van.
     
  6. spanish pete

    spanish pete Active Member
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    I have a very similar problem I have a concept 20 hot water system. It's wired to the van battery you have to have the van engine running to get the system to fire up lf you don't you cannot get enough water flow before the controer stops the pump and low battery light comes up. So I brought a 135amp leasure battery and it still does the same.would of thought 135 would be easy enough but no..Any one have any ideas
     
  7. spruce

    spruce Grand Master
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    #7 spruce, Aug 15, 2015
    Last edited: Aug 15, 2015
    It sounds as though you also have a bad connection. If you put a volt meter across the battery after you have let it settle for a couple of hours, it should read 12.7v or above when fully charged.

    As I said to Beccy, most common are battery connectors and fuse holders.

    We use a 110 amp leisure battery and it does the two of us all day with no problems.

    The 2 of us have been doing a large contract and use about 1000 liters a day with 2 pumps going. battery was fully charged after each days work.
     
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  8. Beccy

    Beccy Active Member
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    That's right spruce, no van, I work off a bike so the battery is charged in the garage every night.

    It's this controller:
    [​IMG]

    I'll have a look for loose connections tomorrow and retest the battery when it's been resting (I tested it before straight after using it, didn't know that was wrong). The only other battery I have is the little one in my homemade trolley system. It's only 9ah so don't know if that could realistically run my big system.
     
  9. peter rogers

    peter rogers Grand Master
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    spanish pete hydroflo-charger-v9-instruc.gif its messed up but hey it works the black wire linkn two bats is split rely
     
  10. spruce

    spruce Grand Master
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    12.75v would increase slightly once you have let the battery settle. The same applies to charging. Once you have taken the battery off charge it should be left for a few hours for the voltage to stabilize (the books says 4 hours will give the most accurate reading.)

    The magic eye of your battery and your voltmeter would seem to agree with each other. So my guess it will be in a connection somewhere between the battery and the controller.

    I will also agree that your 9amp hour battery won't last long with your Shurflo pump. I'm guessing on 2 hours or maybe a fraction more providing to have a slow flow. Your pump will be drawing around 3.5 to 4 amps an hour.
     
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