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Thread: Timer problems

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    Timer problems

    I was having problems with a timer for my pool pump. (Intermatic T104) After awhile I noticed that it was not turning the pump on. I would manually turn on the pump, and then the timer would turn it off as it was programmed to do. (It is mechanical, not digital)

    The timer was old and rusted, I noticed that the little tab that trips to on switch was broken off. I went to the pool store and bought new "innards" for it.

    Well, this new one is not turning at all. (I know I wired it as the old one was set up.) still, it does not turn on the pump?

    Has anyone ever experienced problems like this with a timer?

    Any assistance would be MOST appreciated.

    thanks!
    Frank E.
    13,500 gls. i/g vinyl lined pool. 13 x 32x 5
    3Bs maint. "bleach, borax,baking soda", (unless on the lazy side, then throw some trichlor pucks into the rainbow feeder.)

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    spishex's Avatar
    Join Date
    Oct 2008
    Location
    Hillsborough, NC
    Posts
    1,375

    Re: Timer problems

    Check the voltage on the load side of the timer when you flip it on. If that checks out, take a look at the pump connections.

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    Join Date
    Jun 2007
    Location
    New Jersey
    Posts
    651

    Re: Timer problems

    The first thing to do is look through the little oval window at the very top to the right of the wheel. If you can see the teeth on that gear moving, the problem is mechanical in the gear train (unlikely in a new mech, but possible.) If it is not turning, the problem is a bad motor or motor not getting voltage.

    Look for two little white wires from inside the timer that should be attached to the 'Line' terminals. Verify with an insulated test lamp or VOM that there is indeed line voltage at the terminals to which the white wires are attached when the timer switch is off. If not, you have a wiring problem. If yes, you have a dead motor out of the box and you should return the mechanism. It is easy in some installations to swap the line and load leads. This will cause the timer to operate until the timer is turned off. Then voltage is cut to the timer motor and it never turns on again. Good lock and stay safe. Always cut power at breaker before exposing yourself to any wires (obvious, but can't be said enough).
    Current: 28,000G 18'x36' I/G AnthonySylvan Plaster; Waterway 60 sq.ft. DE Filter; 1.0hp x 1.65 SF Two-Speed (B2982) WhisperFlo; 2004-Present
    Previous: 40,000G 20'x40' I/G Koven unlined WWII salvage 5/8" marine steel; Lomart Stainless Sand Filter; 3/4hp Hayward SuperPump; 1946-2003 (managed by me from about 1964)
    Ancient Taylor K-2000, upgraded with Taylor CH, TA, and FAS-DPD, and TFT CYA tests.

  4. Back To Top    #4

    Re: Timer problems

    Many thanks! (I will check all these and see what is going on!)

    Frank E.
    13,500 gls. i/g vinyl lined pool. 13 x 32x 5
    3Bs maint. "bleach, borax,baking soda", (unless on the lazy side, then throw some trichlor pucks into the rainbow feeder.)

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