Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 3 of 3

Thread: New champion Century motor keeps throwing thermal overload switch

  1. Back To Top    #1

    New champion Century motor keeps throwing thermal overload switch

    I replaced an old champion motor today that had been running well for the 11 summers I've owned the house, with a couple of seal replacements along the way, because it stopped starting unless I gave it a bit of a "jump start" by turning the shaft by hand (brushes?)

    Rather than tear into it, in light of its age, I bought a champion/century replacement with the same SF and got it installed today.

    The old motor was clearly wired for 220 by the circuit diagram on the outside, but when I measured the voltage across the two wires, not the ground, I got 118 (I got 120 on my indoor sockets). I assumed this meant I had 110 at the motor, so I rotated the dial to that position.

    Now when I start it, it trips after about 10 seconds. and it does get hot!

    DId I measure the voltage correctly? The breaker for the circuit also supplies the accessory pump and is a double 20 amp breaker.

    When I replaced the accessory pump in the spring, I wired it just as the old one had been, I think for 110, and it has done fine. COuld two motors on the same circuit/breaker be receiving diff voltages? Once this problem is resolved, should I recheck (properly) the voltage to the other motor?

    I'm not helpless, but I'm in a bit over my head. Lil help?
    1) The size of your pool in gallons about 38000 gal, 20x40", about 8 ft at deepest.
    2) The type filter you have (sand, DE, cartridge) sand
    3) If your pool is an AG (above ground) or IG (in ground) IG
    4) If it's IG, tell us if it's vinyl, plaster/pebble, or fiberglass Plaster
    5) If you know, tell us the size pump and the size (flow rate) of your filter. ? I do have a polaris accessory pump for the sweeper.

  2. Back To Top    #2

    TFP Guide

    Join Date
    Jun 2012
    Location
    western NY
    Posts
    1,557

    Re: New champion Century motor keeps throwing thermal overload switch

    What breaker supplies this pump? Is it a single pole or double pole? If the original (which by the way needed a new capacitor) was truly wired for 240 then you should have measured that across both feeder wires, not 120. Did you replace the motor with the same horsepower as the original? If it is a lower HP motor the impeller may be causing it to work too hard.
    Unknown make 18' above ground (bought used in 1999) Sparco sand filter. Hayward 100,000 BTu heater. 2 speed pump

  3. Back To Top    #3

    Re: New champion Century motor keeps throwing thermal overload switch

    I changed it to 240 and all is good. thanks
    1) The size of your pool in gallons about 38000 gal, 20x40", about 8 ft at deepest.
    2) The type filter you have (sand, DE, cartridge) sand
    3) If your pool is an AG (above ground) or IG (in ground) IG
    4) If it's IG, tell us if it's vinyl, plaster/pebble, or fiberglass Plaster
    5) If you know, tell us the size pump and the size (flow rate) of your filter. ? I do have a polaris accessory pump for the sweeper.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •