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Thread: Skimmer / Main Drain Diverter

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    HardTrance9's Avatar
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    Skimmer / Main Drain Diverter

    Hi all,

    In one of the pools, the skimmer / main drain diverter (as shown at the visual encyclopedia from the PS) pool-school/visual_encyclopedia, seems to have trouble working as it should.

    Looks like the "floating" device from the skimmer sinks and gets stuck once it is placed in the skimmer cylinder therefore the "suction" from the skimmer is cut and the debris is not pulled to the skimmer and stays in the pool area. I though could be having a lot of suction power, but this happens with or without suction.

    Do you know if there is a way of making this stop happening? Any maintenance? lubrication? exchange? has to be made?

    Thanks as always!
    In charge of some SWG and Bleach pools... still a newbie..

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    Re: Skimmer / Main Drain Diverter

    This device generally does not divert water between the main drain and the skimmer. It's purpose and function is if your water level drops below the skimmer, it closes and of and allows water to be pulled in through the skimmer equalization line that may be plumbed into the second port of the bottom of the skimmer and is plumbed through the wall of the pool approximately 18 - 24 inches below the water line directly in front of the skimmer. These are required on commercial pools. The reason that the diverter is closing is that the pump is pulling too hard through the skimmer causing the diverter to close. In commercial pools the line velocity of water in the pipes is calculated before installation and is very slow thus allowing the diverter to work properly. Try closing the valve down on the skimmer line to reduce water flow and see if that doesn't. If there is no equalization line or the skimmer is not plumbed to a secondary suction just throw the piece away as it will be of no assistance to you.
    Frank Bowman

    http://www.SplashPoolsMD.com
    http://www.FrankBowman.com

    Authorized Dealer: Pebble Tec, Paramount, Aquamatic Covers, Pentair, Crystal Fountains, Jandy, Hayward

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    HardTrance9's Avatar
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    Re: Skimmer / Main Drain Diverter

    Quote Originally Posted by SplashPoolsMD
    This device generally does not divert water between the main drain and the skimmer. It's purpose and function is if your water level drops below the skimmer, it closes and of and allows water to be pulled in through the skimmer equalization line that may be plumbed into the second port of the bottom of the skimmer and is plumbed through the wall of the pool approximately 18 - 24 inches below the water line directly in front of the skimmer. These are required on commercial pools. The reason that the diverter is closing is that the pump is pulling too hard through the skimmer causing the diverter to close. In commercial pools the line velocity of water in the pipes is calculated before installation and is very slow thus allowing the diverter to work properly. Try closing the valve down on the skimmer line to reduce water flow and see if that doesn't. If there is no equalization line or the skimmer is not plumbed to a secondary suction just throw the piece away as it will be of no assistance to you.
    Ok, thanks. Just wanted to know if this device needs to really be there, but it is actually a small pool (pending to post the measures still, sorry). Your comments helped very much. Thanks again.
    In charge of some SWG and Bleach pools... still a newbie..

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    Re: Skimmer / Main Drain Diverter

    If the float in it isn't floating, it's cracked and full of water. Replace it.

    SCott
    Owner of - PoolGuyNJ LLC
    Expert Pool and Spa Repairs, Renovations, and Augmentation. Helping people decide what is the right gear for meeting their needs. Expectations Set, Expectations Met, No Surprises.

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    HardTrance9's Avatar
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    Re: Skimmer / Main Drain Diverter

    Quote Originally Posted by PoolGuyNJ
    If the float in it isn't floating, it's cracked and full of water. Replace it.

    SCott
    Got it! Thanks
    In charge of some SWG and Bleach pools... still a newbie..

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    Richard320's Avatar
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    Re: Skimmer / Main Drain Diverter

    Quote Originally Posted by HardTrance9
    Hi all,

    In one of the pools, the skimmer / main drain diverter (as shown at the visual encyclopedia from the PS) pool-school/visual_encyclopedia, seems to have trouble working as it should.

    Looks like the "floating" device from the skimmer sinks and gets stuck once it is placed in the skimmer cylinder therefore the "suction" from the skimmer is cut and the debris is not pulled to the skimmer and stays in the pool area. I though could be having a lot of suction power, but this happens with or without suction.

    Do you know if there is a way of making this stop happening? Any maintenance? lubrication? exchange? has to be made?

    Thanks as always!
    Is there a hole on the bottom (flat) side, with a little flapper over it? If the float's not sunk, the door may be closed. In my situation, the main drain comes up through the skimmer, and I regulate the balance by moving the door. Smaller door opening = more drain. Wide open door = all skimmer. I figured out the best setting by trial and error. I still have swirl in the skimmer basket, but if I sweep debris at the main drain, it gets pulled in. Although it is a lot like billiards, brush a hair off and it misses the holes completely...
    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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    Re: Skimmer / Main Drain Diverter

    Dumb question, i do not have a drain at bottom of pool, (1300 gal fiberglass) there was a kreepy krauly hooked up to hole where a skimmer basket would normally go.(missing weir door )
    Krauly is junk and only works after i clean filter, for about 20min lol.
    Can i s***-can krauly and just throw a skimmer basket in there and be done with it? and do i still need a spaceship in case water level drops?
    note: there are 2 holes in skimmer but one has the vacuum and the other seems to be plugged and never used for any thing.
    25k I/G ecostar ccplus Polaris plaster

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    Mod Squad jblizzle's Avatar
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    Re: Skimmer / Main Drain Diverter

    If the other hole is sealed, then you would not be getting the safety of the float if the water got too low any way. So likely no reason to have one other than the ability to partially close it so more suction went somewhere else.

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