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Thread: leaving mechanical timer motor running during off-season ?

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    leaving mechanical timer motor running during off-season ?

    Ok - so I use one of the Intermatic T104 mechanical timers on my pool pump. Is there any thought as to if it is better to leave the timer motor running all winter, or just keep the power secured at the breaker like I have now ? My pump is unplugged and disconnected and in storage until it's time to open it again.
    16x32 IG 19,000 gallons, Pentair 1.5 hp Energy Efficient Superflo pump (348024),vinyl liner, Chlorine dispenser, Hayward S-244T sand filter

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    Mod Squad Bama Rambler's Avatar
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    Re: leaving mechanical timer motor running during off-season

    Leaving it off is the preferred thing to do. It doesn't hurt it to stay on but everything has a finite life and you're using it up if you leave it powered.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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    Re: leaving mechanical timer motor running during off-season

    That makes sense . it is what I have been doing, was just wondering if there was other thoughts about leaving it running being better for the life of the timer motor.
    16x32 IG 19,000 gallons, Pentair 1.5 hp Energy Efficient Superflo pump (348024),vinyl liner, Chlorine dispenser, Hayward S-244T sand filter

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    Re: leaving mechanical timer motor running during off-season

    I can't prove it's better, but after a few experiences where motors failed to start in the Spring I started leaving the timer connected all winter. I have yet to have one fail since I started doing this, although I started over with a whole new pool (and timer) when the last one had about ten years of continuous use. The current one has been on continuously since 2004. My theory is that corrosion is the enemy, and continuous use keeps bearing surfaces corrosion free and motor heat from friction fights moisture accumulation. Truth is, in the 40 years I have had Intermatic timers in service at this location, I have never had one fail mid-season. It was always at Spring start-up.
    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.

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    Re: leaving mechanical timer motor running during off-season

    How ironic - I ask this then go turn the power on (to make sure it's still working) - and motor not turning at this time. Oh well - the switch is working, and I have until April / May to get a replacement if needed.
    16x32 IG 19,000 gallons, Pentair 1.5 hp Energy Efficient Superflo pump (348024),vinyl liner, Chlorine dispenser, Hayward S-244T sand filter

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    Re: leaving mechanical timer motor running during off-season

    So last night when I was farting around with it , I shot it with some WD40. Went out to the shed this morning, flipped the breaker on - and it's running. I think I'll leave it running unless I have a reason to power it off for maintenance or something.
    16x32 IG 19,000 gallons, Pentair 1.5 hp Energy Efficient Superflo pump (348024),vinyl liner, Chlorine dispenser, Hayward S-244T sand filter

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