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Thread: Fingers don't seem to be coated?

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    Join Date
    Jun 2015
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    Fingers don't seem to be coated?

    I am new to de filters. I have just fixed a leak (hopefully), so note - air was being drawn. My concern is, as I've opened and closed this thing 5 times, I've noticed the fingers do not seem to be coated. There is just a pile of powder at the base of the filter. Is this normal? I had taken the filter head to a pool store in order to obtain parts (bump shaft kit, clips, etc) and the technician noted the fingers didn't seem coated and suggested adding more de. Just prior I had actually weighed out 5lbs required for the ec50. Any advice would be appreciated.
    27' round ~ preowned ~ beginning install ~ replacing smaller pool

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    Mod Squad zea3's Avatar
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    Jul 2009
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    Re: Fingers don't seem to be coated?

    When the DE is fresh it will coat the grids or fingers when the pump is turned on and mostly fall back off when the pump is turned off. As dirt accumulates the DE will cling more to the grids/fingers when the pump is turned off. When it is time to change the DE most of it should be sticking to the grids/fingers.

    That being said, are you seeing any signs that dirt is by-passing the filter?
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    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
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    Richard320's Avatar
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    Re: Fingers don't seem to be coated?

    That's normal. Theoretically, all the DE should fall off the screens or fingers when the pressure stops. Then when the pump restarts, it all gets churned up and mixed and the heavy stiff - sand and whatever - settles to the bottom and only DE coats things. It doesn't work that way in reality. Your bump-type filter is designed to knock everything off when it gets stuck. Since the DE is new, it's not sticking. As it collects stuff from the water, it will. Eventually, it will get stuck so bad you need to bump. When bumping no longer helps, then you replace the DE.
    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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    Join Date
    Jun 2015
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    Quarryville/PA
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    58

    Re: Fingers don't seem to be coated?

    thank you for the explanations. I am now having a heck of a time trying to get the pin back in the handle. I wanted to move it to the other side due to a chip. Any tips?
    27' round ~ preowned ~ beginning install ~ replacing smaller pool

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    Join Date
    Jun 2015
    Location
    Quarryville/PA
    Posts
    58

    Re: Fingers don't seem to be coated?

    I got it in. Now I just can't get the nail out! Moving on
    27' round ~ preowned ~ beginning install ~ replacing smaller pool

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