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Thread: Can I backwash/vacuum to waste?

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    ian81's Avatar
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    Aug 2012
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    Jenison, MI
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    53

    Can I backwash/vacuum to waste?

    Hello, I have a hayward EC-65 (DE Filter) which only contains a "backwash valve" that I open on the back of the filter when I want to backwash.

    I have a lot of vacuuming to do. Basically I am wondering if I can close the main drain valve (leaving skimmer open), open the backwash valve and just vacuum through the skimmer out the side of the pump house?

    Main reason I am stumped is because you risk damaging the fingers if you run water through it without DE, right? Also, if I do it how I did it last year, I fill it with DE, vacuum (with pump circulating normally), backwash, re-add DE, repeat.

    In the process of opening now, water finally above the jets.

    Thanks!
    Ian
    18k gal. 16x32 IG cement painted
    Hayward DE EC-65

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    Richard320's Avatar
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    Jan 2010
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    San Dimas, CA (LA County)
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    Re: Can I backwash/vacuum to waste?

    You can't.

    That's strictly a backwash valve, you don't have the multiport. You could spend a pile of dough and get one installed, though! I'm in the same boat, but I'm a cheapskate and since everything works fine, I don't want to disturb it.

    If you try vacuuming on backwash, all the crud goes through the fingers backwards and you know you'll never ever get it all out again.

    You had it exactly right last year. Lots of backwashing.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    ian81's Avatar
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    Aug 2012
    Location
    Jenison, MI
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    53

    Re: Can I backwash/vacuum to waste?

    Of course! Thanks for the fast response. Backwash City here we come!
    18k gal. 16x32 IG cement painted
    Hayward DE EC-65

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