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Thread: Draining Pool 101 Help

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    mpride's Avatar
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    Draining Pool 101 Help

    I need to repair a small gash in my plaster where a chair was blown into the pool. I will need to drain water below the level of the skimmers and I’m not exactly sure how to accomplish this. I see that some folks use a submersible pump to do this. However, I’d like to use the pool pump if possible. The problem is that my main drain is tied into one of my 2 skimmers. I’ve read that you can purchase a diverter to bypass the skimmer and allow water to be pulled through the main drain only. But when I started looking at diverters there were many different types and I’m not sure what to purchase.

    So here are my questions:

    1) Am I on the right track or is there a better way to accomplish the repair of the plaster?
    2) Should I just go ahead and buy a submersible pump? Is this the preferred method of draining the pool?
    3) How do I determine the type of diverter I need? Is there a way to identify the type of skimmer I have?

    Thanks for your help on this!
    Mark
    IG Gunite * White Plaster * 26'9" x 14' * 310sqft * 70' Perimeter * 9300 Gallons * 2 Main Drains
    2 Skimmers * 4 Jets * Aqua Plus Control System * Aqua Rite Salt System * C3025 Cartridge Filter
    Tristar 2HP 2 Speed Pump * H400K Heater * Phantom w/Booster Pump * ColorLogic

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    Re: Draining Pool 101 Help

    Can you plug the skimmer/main drain hole with a plug or gizzmo?
    My cement pond is a 36K gunite 20X40 built in mid 1960s, Hayward S244S filter, Aquarite SWCG, Jandy 1.5HP 2sp, TF-Test kit and Nitro Wall Climber

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    mpride's Avatar
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    Re: Draining Pool 101 Help

    Quote Originally Posted by Buford
    Can you plug the skimmer/main drain hole with a plug or gizzmo?
    There are 2 openings in each skimmer. Which would I plug in order to shut off the skimmer and leave the main drain connected to the pump?

    Also,
    I found a part number on the skimmer lid. It shows Hayward SP1071 or SP 1071S.
    Mark
    IG Gunite * White Plaster * 26'9" x 14' * 310sqft * 70' Perimeter * 9300 Gallons * 2 Main Drains
    2 Skimmers * 4 Jets * Aqua Plus Control System * Aqua Rite Salt System * C3025 Cartridge Filter
    Tristar 2HP 2 Speed Pump * H400K Heater * Phantom w/Booster Pump * ColorLogic

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    Melt In The Sun's Avatar
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    Re: Draining Pool 101 Help

    Looks like you need part SP1070FV.
    11,200 gal, Pebble-Tec; Tristar 2-speed 1hp - Swimclear 325 ft2 cart - SWG - A & A in-floor cleaner - Heat pump. For the poolside cooking, a Yoder Wichita and a Big Steel Keg!
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    mpride's Avatar
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    Re: Draining Pool 101 Help

    Quote Originally Posted by Melt In The Sun
    Looks like you need part SP1070FV.
    Great. So this will allow me to close off the skimmer and leave the main running?

    When I do this I plan to shut off the other skimmer with the valve at the equipment pad and then I'll place this float valve in the other skimmer. If that sounds wrong let me know.

    Thanks for your help "Melt In The Sun".
    Mark
    IG Gunite * White Plaster * 26'9" x 14' * 310sqft * 70' Perimeter * 9300 Gallons * 2 Main Drains
    2 Skimmers * 4 Jets * Aqua Plus Control System * Aqua Rite Salt System * C3025 Cartridge Filter
    Tristar 2HP 2 Speed Pump * H400K Heater * Phantom w/Booster Pump * ColorLogic

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    Re: Draining Pool 101 Help

    Quote Originally Posted by mpride
    Quote Originally Posted by Buford
    Can you plug the skimmer/main drain hole with a plug or gizzmo?
    There are 2 openings in each skimmer. Which would I plug in order to shut off the skimmer and leave the main drain connected to the pump?

    Also,
    I found a part number on the skimmer lid. It shows Hayward SP1071 or SP 1071S.
    IMHO Melt's solution is the best. But to answer your question, it depends on how the contractor hooked it up, on mine, it is the opening closest to the pool. In my case, I just closed the skimmer valve (at the equipment pad) and the hole still sucking was the drain. I just use a 1.5" pvc plug from home depot or a gizzmo (whatever is handy). You could also use a rubber freeze plug or a rubber ball (but knowing my luck, it would get sucked in). There was also a cover on mine, that disappeared a while ago (SP-1082-H-1) that was for restricting the flow.
    My cement pond is a 36K gunite 20X40 built in mid 1960s, Hayward S244S filter, Aquarite SWCG, Jandy 1.5HP 2sp, TF-Test kit and Nitro Wall Climber

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    mpride's Avatar
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    Re: Draining Pool 101 Help

    Thanks for all the info guys. You always come through for me.

    I was curious about something. I assume when I had the pool built I probably should have had them run the main drain all the way back to the pump without going through one of the skimmers. Would that be the best way to have plumbed it?
    Mark
    IG Gunite * White Plaster * 26'9" x 14' * 310sqft * 70' Perimeter * 9300 Gallons * 2 Main Drains
    2 Skimmers * 4 Jets * Aqua Plus Control System * Aqua Rite Salt System * C3025 Cartridge Filter
    Tristar 2HP 2 Speed Pump * H400K Heater * Phantom w/Booster Pump * ColorLogic

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    Re: Draining Pool 101 Help

    I don't know if one way is better than another, I just live with what I have. It seems like I have seen some discussion on the matter, you might try google or wait for someone to chime in.
    My cement pond is a 36K gunite 20X40 built in mid 1960s, Hayward S244S filter, Aquarite SWCG, Jandy 1.5HP 2sp, TF-Test kit and Nitro Wall Climber

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    mpride's Avatar
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    Re: Draining Pool 101 Help

    Okay.
    I just started the drain process and everything was going smoothly until the water level dropped below the level of the skimmers. I had 1 of 2 skimmers turned off with a valve on the equipment pad. I setup the float valve on the other skimmer that also supports my main drain. Once the water level uncovered the skimmers I was no longer pumping much water out of the pool. The float valve had been very securely seated against the o-ring in the bottom of the skimmer but then started to float. I also checked by hand and the suction seemed very weak.

    What is happening here that I'm missing? Is my main drain clogged? Is something else happening? Should I just give up and buy a submersible pump?
    Mark
    IG Gunite * White Plaster * 26'9" x 14' * 310sqft * 70' Perimeter * 9300 Gallons * 2 Main Drains
    2 Skimmers * 4 Jets * Aqua Plus Control System * Aqua Rite Salt System * C3025 Cartridge Filter
    Tristar 2HP 2 Speed Pump * H400K Heater * Phantom w/Booster Pump * ColorLogic

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    JasonLion's Avatar
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    Re: Draining Pool 101 Help

    It is much better if the main drain is plumbed back the equipment pad. That gives you more flexibility and better system efficiency.

    The approach you are using requires that the float valve be perfect, which is unlikely in practice.

    Here is one alternative. However this won't work unless you add a little water, as it is tricky to get started. I would hook a vacuum hose up to one skimmer and put the other end in the bottom of the pool. Then setup a cover pump or sump pump to pump water up to the skimmer that has the vacuum hose hooked up so the vacuum hose connections are under water all the time. Once you get that started it will run well.

    One thing to keep in mind either way: once you go below the skimmer it isn't possible to stop and then get started again. Once the pump loses prime with the water level below the skimmer it is unlikely it will be able to prime again until you raise the water level.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: Draining Pool 101 Help

    My pool is on a hill so I was able to start a siphon with the vacuum hose. Is that something you could do?
    16x32 Oval In-ground Vinyl, ~17,000 gallons, Hayward 1hp Superpump, Hayward S245T Sand Filter

    Worn out sand? sand-filter-expert-help-t30049.html
    Drain the easy way: cyanuric-acid-blues-draining-pool-t43843.html
    http://tftestkits.net/splash-page.html , pool-school/chlorine_cya_chart_shock , pool-school/shocking_your_pool

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    mpride's Avatar
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    Re: Draining Pool 101 Help

    Both of you suggested things that might work. However, I think I'll hit the stores in the morning and see if I can find a deal on a small pump. We'll see how that goes.
    Mark
    IG Gunite * White Plaster * 26'9" x 14' * 310sqft * 70' Perimeter * 9300 Gallons * 2 Main Drains
    2 Skimmers * 4 Jets * Aqua Plus Control System * Aqua Rite Salt System * C3025 Cartridge Filter
    Tristar 2HP 2 Speed Pump * H400K Heater * Phantom w/Booster Pump * ColorLogic

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    Re: Draining Pool 101 Help

    Quote Originally Posted by macgulley
    My pool is on a hill so I was able to start a siphon with the vacuum hose. Is that something you could do?
    I had to drain my AGP to drop the CYA level. Took a shop vac with a 1" hose and added two extensions from my household vacuum. Put the tip of the extensions near the bottom, and fired the vacuum up. Once the suction started, I disconnected the hose from the drum, and the siphon kept the flow going. I took the 3" corrugated tubing left over from my rainwater fill project (thank you Richar320) to carry the water away from the pool and towards the storm sewer at the corner of my property.

    My back of the napkin math came up with well over 1500 GPH using nothing but good old fashioned physics.
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
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    mpride's Avatar
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    Re: Draining Pool 101 Help

    FYI
    I bought a pump from northern tool. It worked like a champ. It was a bit more than I needed but it do the job in about 2 hours.
    Mark
    IG Gunite * White Plaster * 26'9" x 14' * 310sqft * 70' Perimeter * 9300 Gallons * 2 Main Drains
    2 Skimmers * 4 Jets * Aqua Plus Control System * Aqua Rite Salt System * C3025 Cartridge Filter
    Tristar 2HP 2 Speed Pump * H400K Heater * Phantom w/Booster Pump * ColorLogic

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