Re: Failed water pump ad sump query

On Mon, 03 Feb 2025 16:58:39 +0000, 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.

Well, not withstanding your thoughts,
I would first be suspicious of well-worn (short) brushes.

Jonesy
--
  Marvin L Jones    | Marvin      | W3DHJ.net  | linux
   38.238N 104.547W |  @ jonz.net | Jonesy     |  FreeBSD
    * Killfiling google & XXXXbanter.com: jonz.net/ng.htm