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  • Failed water pump ad sump query

    From N_Cook@21:1/5 to All on Mon Feb 3 17:01:10 2025
    Only made a preliminary check o this 1KW pump and float switch in a
    sump, prior to dismantling ad exploring further.
    Sump full of water but no pump action. Moving the float about made no differece. Tapping the pump casing made the pump work until the float
    switch dropped to the cut off point.
    Refilling the sump and again no pump action until tapping the casing and
    again stopping properly. I cannot see what in the way of sticky motor
    brush or loose/corroded contact inside the motor housing could produce
    this symptom.

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  • From alan_m@21:1/5 to All on Mon Feb 3 17:32:15 2025
    On 03/02/2025 17:01, N_Cook wrote:
    Only made a preliminary check o this 1KW pump and float switch in a
    sump, prior to dismantling ad exploring further.
    Sump full of water but no pump action. Moving the float about made no differece. Tapping the pump casing made the pump work until the float
    switch dropped to the cut off point.
    Refilling the sump and again no pump action until tapping the casing and again stopping properly. I cannot see what in the way of sticky motor
    brush or loose/corroded contact inside the motor housing could produce
    this symptom.


    Worn brushes, not stuck or corroded? Brushes not having enough contact
    area to start the motor but with a bit of vibration they do. A
    constantly turning motor maintains the vibration.

    Faulty motor capacitor?

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