Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 15 of 15

Thread: Closing - Main Drain Help

  1. Back To Top    #1

    Join Date
    Oct 2011
    Location
    Chicago, IL
    Posts
    113

    Closing - Main Drain Help

    Hello, I recently hired someone to close my pool and they did two things differently than my last pool closer. I am still a newbie and plan on doing it myself next year, but want to make sure I do everything right.

    1) They didnt take the light out. The pool company that closed my pool last year did. Is this an issue?

    2) They did nothing related to the main drain at the bottom of the pool. I remember the prior company doing something, but I dont remember. When I asked them why they did nothing they indicated that they have been doing this for X number of years without pools and never had a problem. Some have indicated that you can blow out the main drain until the air comes out and then "close it" (or something like that). Is this ncessary? I will be attaching photos of the setup. I have just installed a brand new liner so the last thing I want is to have a potential issue with the main drain.

    Also, some acorns fell to the bottom of the pool and they didnt pull them out before they closed, should I fish those out?
    I have a 35,000 gallon, sand filter, sunken above ground (so inground), vinyl liner, with an Aqua rite turbo cell SWG

  2. Back To Top    #2

    In the Industry

    X-PertPool's Avatar
    Join Date
    Jun 2009
    Location
    Exeter, PA
    Posts
    1,385

    Re: Closing - Main Drain Help

    I typically blow air into the maindrain and trap it with a rubber plug or valve.

    depending on the depth of the light I may or may not remove the light for the winter. If the light is very shallow that I feel when the pool freezes it will be in that 5-8" ice formation area I would typically remove the light and either sink it or bring it onto the deck.
    -Kevin
    X-Pert Pool Service
    x-pertpool.com
    X-Pert Pool on Facebook and @XPertPoolServic on Twitter
    22,000 gal / 16' x 32' / Vinyl / Hayward s244t /Pentair SuperFlo 1 hp

  3. Back To Top    #3

    Join Date
    Oct 2011
    Location
    Chicago, IL
    Posts
    113

    Re: Closing - Main Drain Help

    So I guess my question is what constitutes a valve, is it that green thing in the picture I have attached?
    What happens to light if it is in the frozen area?
    Any thoughts on the acorns? I heard it stains vinyl liners.

    Anyone else have any opinions?
    I have a 35,000 gallon, sand filter, sunken above ground (so inground), vinyl liner, with an Aqua rite turbo cell SWG

  4. Back To Top    #4
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Closing - Main Drain Help

    Yes the green thing is a valve. (BTW, most of your fittings do not look like schedule 40 PVC. The look like drain fittings that are not designed for pressure).

    Light could be cracked if it was in ice, but would be fine if below the ice.

    Use a net and pull them out if you have concerns.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  5. Back To Top    #5

    Join Date
    Oct 2011
    Location
    Chicago, IL
    Posts
    113

    Re: Closing - Main Drain Help

    I don't follow your comment regarding drain fittings not designed for pressure. Does this mean it won't hold pressure if I blow out main drain? Can you please let me know what I should be doing?

    I'm very confused
    I have a 35,000 gallon, sand filter, sunken above ground (so inground), vinyl liner, with an Aqua rite turbo cell SWG

  6. Back To Top    #6
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Closing - Main Drain Help

    I meant they should not be used in your pool plumbing at all if they are not schedule 40 because they have lower pressure ratings (if any at all).

    They "may" hold the pressure as pool application are not that high or pressure, but why take that risk?

    If they were working for the pool, they should work for the closing, but I would consider replacing them with the appropriate fittings eventually.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  7. Back To Top    #7

    Join Date
    Oct 2011
    Location
    Chicago, IL
    Posts
    113

    Re: Closing - Main Drain Help

    Ok cool, totally understand your point there and I am definitely considering replacing the plumbing in future. I guess my main question is whether I actualy need to blow the main drain line. The pool closing guy said that we didnt have to, but hes never closed my pool before. And the last guy who closed my pool blew the line. I just want to understand whether this is a requirement for all inground pools.

    If it is a requirement, should I call the company that closed my pool and ask them to come back and do it?
    I have a 35,000 gallon, sand filter, sunken above ground (so inground), vinyl liner, with an Aqua rite turbo cell SWG

  8. Back To Top    #8

    Join Date
    May 2013
    Location
    Long Island NY
    Posts
    419

    Re: Closing - Main Drain Help

    Quote Originally Posted by horseradish1
    Ok cool, totally understand your point there and I am definitely considering replacing the plumbing in future. I guess my main question is whether I actualy need to blow the main drain line. The pool closing guy said that we didnt have to, but hes never closed my pool before. And the last guy who closed my pool blew the line. I just want to understand whether this is a requirement for all inground pools.

    If it is a requirement, should I call the company that closed my pool and ask them to come back and do it?
    It's easy to do and should be part of your routine when closing a pool if water can freeze in your area.

    I would not take a chance and skimp on blowing out the main drain. Sure it wont freeze at the deep end, but there may still be water in the main drain pipes closer to the surface.

    All pool people that charge you for closing your pool should blow all lines if you live in a region of the country that freezes.
    19,000 gal - Vinyl IG - Sand filter -1.5hp. - Taylor k 2006 - Loop Loc cover

  9. Back To Top    #9

    Join Date
    Oct 2011
    Location
    Chicago, IL
    Posts
    113

    Re: Closing - Main Drain Help

    Thanks for the info, now in case they dont agree to come back to do this, how do i go about doing this? Take a shopvac and put it in against the pipe opening in the second picture above and then turn the lever in the first picture? Then cap the opening?
    I have a 35,000 gallon, sand filter, sunken above ground (so inground), vinyl liner, with an Aqua rite turbo cell SWG

  10. Back To Top    #10

    Join Date
    Oct 2011
    Location
    Chicago, IL
    Posts
    113

    Re: Closing - Main Drain Help

    So my pool person is not returning my calls... figures... this has been the only constant with these pool companies in chicago since I bought the pool. I am definitely going to be rating these companies when I am done with them.

    Can anyone please confirm what I have to do to blow the main drain line? I really need help here I just want to move on with this. I posted in my last message what I thought I needed to do. I know there are pool experts out there, help a guy out here.
    I have a 35,000 gallon, sand filter, sunken above ground (so inground), vinyl liner, with an Aqua rite turbo cell SWG

  11. Back To Top    #11

    Join Date
    May 2013
    Location
    Long Island NY
    Posts
    419

    Re: Closing - Main Drain Help

    I assume the 2nd pic is where they disconnected the pump and I also assume the green valve goes to that same main pipe that the pump was hooked up too.

    If that's the case you need to force air through that pipe and when your main drain bubbles with air then you need to close that green valve and trap the air which will block the water from comming back into the pipe.

    Do you have a compressor or shopvac?


    That green valve is closed now. Did they just blow out the skimmer/ returns and then close that valve?

    Also it looks to me your main drain and skimmer and returns are all on the same line.

    I say that because I see one valve that is a non typical pool valve and it's mounted inline with one pipe.

    Most pools have 2 lines comming from the main drain and skimmer and they meet at a junction with a valve. Therefore you can shut one line off. And that's how we close off the main drain.

    So in your case you blow the skimmer , returns and main drain all at the same time then turn the green valve to the closed position.

    Clear as mud? I hope this helps.
    19,000 gal - Vinyl IG - Sand filter -1.5hp. - Taylor k 2006 - Loop Loc cover

  12. Back To Top    #12

    Join Date
    Oct 2011
    Location
    Chicago, IL
    Posts
    113

    Re: Closing - Main Drain Help

    The second pic is a picture of the pipe connected to my SWG that is connected directly to the filter. The pump is lower on the floor. I think they link up at some point, although Im not 100% sure I'd have to go check.

    I do have a shopvac.

    I just want to make sure Im blowing out the right pipe.
    I have a 35,000 gallon, sand filter, sunken above ground (so inground), vinyl liner, with an Aqua rite turbo cell SWG

  13. Back To Top    #13

    Join Date
    May 2013
    Location
    Long Island NY
    Posts
    419

    Re: Closing - Main Drain Help

    Then what I assumed is wrong then. So it's the same procedure with the pipe that goes to your pump.

    If it was me and I only had a shop vac I would pull the pump away from the pipe and attach my shop vac at the pipe. That means your going to have to create a fitting to hook up to the shop vac.

    And don't rule out good ole duck tape. I heard of that before.

    I use a compressor and attach it to the pump myself.
    19,000 gal - Vinyl IG - Sand filter -1.5hp. - Taylor k 2006 - Loop Loc cover

  14. Back To Top    #14

    Join Date
    Oct 2011
    Location
    Chicago, IL
    Posts
    113

    Re: Closing - Main Drain Help

    So the only way to do this is to detach the pump from the pipe? This seems way to complicated. I guess i'll just hire someone else to come out here and do it. FML
    I have a 35,000 gallon, sand filter, sunken above ground (so inground), vinyl liner, with an Aqua rite turbo cell SWG

  15. Back To Top    #15

    Join Date
    May 2013
    Location
    Long Island NY
    Posts
    419

    Re: Closing - Main Drain Help

    Quote Originally Posted by horseradish1
    So the only way to do this is to detach the pump from the pipe? This seems way to complicated. I guess i'll just hire someone else to come out here and do it. FML
    If you had a compressor then you could just blow through the pump with 1/4 air fitting.

    Since you have a shop vac, you have to get air in the main drain pipe somehow.
    19,000 gal - Vinyl IG - Sand filter -1.5hp. - Taylor k 2006 - Loop Loc cover

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •