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Thread: Wiring of pump controller

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    Wiring of pump controller

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    Hi guys, my first post although I have browsed your great forum many times.
    I need to wire a new pump controller (switching pump on and off depending on the pressure)

    The connections on the controller is as follows:

    E
    L
    N

    and

    E
    U
    V

    Obviously the mains go to E (earth), L (Live) & N (Neutral) and E, U and V goes to the pump

    Could you please advise how to connect the pump (U & V) Single phase having the L, N and E

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    Diamond Member Justloadit's Avatar
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    It seems that the controller assumes you have a capacitor start and run motor with a built in mechanism to take care of the start capacitor, which you generally will not find with a submersible pump.
    The U and V connections from the controller would simply go to the 2 wires of your motor supply cable.
    Victor - Knowledge is a blessing or a curse, your current circumstances make you decide!
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    viljoenp (09-Apr-15)

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    Good day Viljoenp

    It should not matter which way around the L & N of your pump wires goes since it is AC.

    Maybe to be safe confirm which connection is L by having the controller switch on an see between U and Earth and the V and Earth which one gives you 220v also just for interest sake check continuity between Earth in & Earth out so make sure it is internally bridge or if you should put a bridge in yourself.

    "I used to have a lot of anger issues, now I just have a passion for justice"

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    viljoenp (09-Apr-15)

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    Hi, thank you very much. I have tried all options and the fault light on the controller stays on and the controller does not work. I have discarded this new automatic controller type system and went back to the old fashion pump with tank and pressure switch.

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    Diamond Member Justloadit's Avatar
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    Is the controller specified for the pump and motor that you are attempting to run. There is no one controller fits all, they are all specifically designed for a set of pump and motor, if not it will not know when an overload is taking place, or when there is an under load taking place to to no water, in in some cases depending on the quality of the pump, when the outlet is blocked.
    Victor - Knowledge is a blessing or a curse, your current circumstances make you decide!
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    Diamond Member AndyD's Avatar
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    The diagram shown is just a 2-pole switch, it's switching the live and the neutral of the pump supply as it's shown. It should be compatible with any single phase pump which has a running current equal or less that the AC3 rating of the switch contacts.
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    Diamond Member Justloadit's Avatar
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    There is usually another label with the rating of the equipment either on the outside lid or side of the box.
    The diagram label is a generic label, and has no specifications on it.
    Victor - Knowledge is a blessing or a curse, your current circumstances make you decide!
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    According to the specifications, this controller can be used on any pump as long as the pressure does not go beyond 10 bar. It can even be used on a three phase pump in which case the wiring is as per the following diagram. Thanks for all inputs. Click image for larger version. 

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    Diamond Member Justloadit's Avatar
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    So what was the fault indicating?
    No pressure?
    Victor - Knowledge is a blessing or a curse, your current circumstances make you decide!
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    Well with this diagram it makes perfect sense...

    The controler feeds the contactor's coil and the contactor feeds the motor.

    As long as your contactor has a 220v coil the controler can switch the contactor. As for the motor depending on the supply circuit it can be anyone of the 2.

    "I used to have a lot of anger issues, now I just have a passion for justice"

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