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Thread: winterizing with a sand filter

  1. #1
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    winterizing with a sand filter

    I tried to do a search but it said the words sand and filter were too common. I've read a couple dozen threads but don't see the answers. We have a hayward sand filter that holds about 250 lbs of sand. So I'm guessing that stays where it is right? Do I take anything off of it other than the hoses that the water goes through? I know to take off the drain plug but otherwise it's all fine to stay outside right? We live in north central Indiana-it gets well below freezing all winter long. We're planning to put the pump and all the hoses and fittings in the basement. Do we need to take the top off the filter too? I don't know what the multiport/spider gasket is but I suspect it's beneath that handle that I use for the different settings on the filter? In order to remove that gasket do I have to remove that whole top thing? There are pictures of our filter and pump in my signature. Thanks and sorry if this is a repeat.
    AG pool 18 x 52 (~8300 gallons)
    Hayward Sand Filter
    Hayward 1.5 hp pump
    pictures of our pool and equipment

  2. #2
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    Re: winterizing with a sand filter

    Just remove the drain plug at the bottom, the site glass, and the pressure gauge. Leave the rest. Put the multiport on "Winter" and thats it.

    You really dont need to bring the pump in. IMO, its a waste of time and energy. Since you have an above ground, just drain everything, and remove the plugs from the pump. Someone else who has an AGP will be along to give you more tips.
    FWIW, I live in Massachusetts and no one that I know, without exception, takes in the pump. There are those on TFP that do, but IMO its not needed.
    14,000 gallon IG, Vinyl. Hayward 3/4 hp superpump, Penatair IC40 SWCG, Pentair automation, Hayward sand filter, Aqua Comfort heat pump, Hayward 400k Lo-Nox LP heater.

  3. #3
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    Re: winterizing with a sand filter

    ok thanks-I will relay this info to my husband.
    AG pool 18 x 52 (~8300 gallons)
    Hayward Sand Filter
    Hayward 1.5 hp pump
    pictures of our pool and equipment

  4. #4
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    Re: winterizing with a sand filter

    Just removing the drain plug will not sufficiently evacuate 90% of the water still in the sand filter. To remove the remainder is to use a high volume shopvac to blow the filter out through your backwash line. You place your dial to Rinse then place your vac hose on the line from the pump(leave you gauge and sight glass in while doing this). When blowing the air forces the water up and out. This procedure takes usually an extra 5-10 minutes but it will save your tank from freezing expanding then cracking.
    I can always find something to fix on your "perfect" pool

  5. #5
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    Re: winterizing with a sand filter

    Quote Originally Posted by Pathfinder
    Just removing the drain plug will not sufficiently evacuate 90% of the water still in the sand filter. To remove the remainder is to use a high volume shopvac to blow the filter out through your backwash line. You place your dial to Rinse then place your vac hose on the line from the pump(leave you gauge and sight glass in while doing this). When blowing the air forces the water up and out. This procedure takes usually an extra 5-10 minutes but it will save your tank from freezing expanding then cracking.
    You can do that if you want, but it's not really necessery. Removing the drain plug at the bottom and letting the water drain is fine. Now, if its already freezing and you need to get it out fast, sure, thats a good way to do it. But just taking the plug off the bottom of the filter will drain the water just fine. By the time you get a hard pipe busting freeze, the water is out.
    Now, if your blowing out an inground pool, sure, throw the multiport on rinse while your blowing the lines and your good to go. But, for an AGP where you dont blow the lines, letting it gravity drain works, IMO.
    14,000 gallon IG, Vinyl. Hayward 3/4 hp superpump, Penatair IC40 SWCG, Pentair automation, Hayward sand filter, Aqua Comfort heat pump, Hayward 400k Lo-Nox LP heater.

  6. #6
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    Re: winterizing with a sand filter

    Quote Originally Posted by bk406
    Quote Originally Posted by Pathfinder
    Just removing the drain plug will not sufficiently evacuate 90% of the water still in the sand filter. To remove the remainder is to use a high volume shopvac to blow the filter out through your backwash line. You place your dial to Rinse then place your vac hose on the line from the pump(leave you gauge and sight glass in while doing this). When blowing the air forces the water up and out. This procedure takes usually an extra 5-10 minutes but it will save your tank from freezing expanding then cracking.
    You can do that if you want, but it's not really necessery. Removing the drain plug at the bottom and letting the water drain is fine. Now, if its already freezing and you need to get it out fast, sure, thats a good way to do it. But just taking the plug off the bottom of the filter will drain the water just fine. By the time you get a hard pipe busting freeze, the water is out.
    Now, if your blowing out an inground pool, sure, throw the multiport on rinse while your blowing the lines and your good to go. But, for an AGP where you dont blow the lines, letting it gravity drain works, IMO.
    Thank You bk406! The gravity drain on a sand filter takes a while, but is sufficient, when done long enough before freezing.
    Luv& Luk
    -Ted

    Having done construction and service for 4 pool companies in 4 states starting in 1988, what I know about pools could fill a couple of books - what I don't know could fill a couple of libraries :-D

    POOL SCHOOL, TF Testkits, Jason's Pool Calculator, CYA vs. cl chart, (Just a few DARNED handy links!)

  7. #7
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    Re: winterizing with a sand filter

    A sand filter is a sand filter whether it be on an AGP or IG I suggest trying my method after a few days of gravity draining through the bottom. You're sure are not going to get the volume out the bottom like you would blowing it. Whats the harm in taking the extra step & 5 mins to ensure a sand filter is drained properly for your customer rather than simply relying on a guess that the water is sufficiently drained out through the bottom. It may be sufficient for southern states but to dismiss a proper method for everyone in freezing climates is a disservice to others on this board.
    I can always find something to fix on your "perfect" pool

  8. #8
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    Re: winterizing with a sand filter

    Quote Originally Posted by Pathfinder

    It may be sufficient for southern states but to dismiss a proper method for everyone in freezing climates is a disservice to others on this board.
    I live in Massachusetts, Ted was from Connecticut, now Maine. Gravity draining a sand filter is sufficient. The OP has an above ground pool. Those pools generally do not have the lines blown out. So, for an AGP owner, it makes no sense to go to the trouble to blow out a sand filter when its not really needed. If you noticed, i did say that if you are already blowing out the lines for an IG pool, sure, put the multiport on rinse and blow it out. But its not necessary.
    14,000 gallon IG, Vinyl. Hayward 3/4 hp superpump, Penatair IC40 SWCG, Pentair automation, Hayward sand filter, Aqua Comfort heat pump, Hayward 400k Lo-Nox LP heater.

  9. #9
    Senior Member X-PertPool's Avatar
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    Re: winterizing with a sand filter

    Just make sure to give the filter a good backwash before winterizing as this will help the filter drain easier when the plug is pulled. I've seen some filters only drip when the drain plug was removed because the filter was so dirty.
    -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

  10. #10
    Senior Member Heckpools's Avatar
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    Re: winterizing with a sand filter

    Ive had sand filters not drain all the way and cause freeze damage to the standpipe.
    Do yourself a favor, and blow it out just incase.

    Take the extra 5 minutes and protect your investment.
    [center:3gj9kdnn]Matt Heck
    "HECK OF A POOL SERVICE LLC"
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  11. #11

    Re: winterizing with a sand filter

    Interesting to note: Hayward Manual for the S244T 24" 300# sand filter, states only this in their instructions for winterizing:
    .
    WINTERIZING
    1. Completely drain tank by unscrewing drain cap at
    base of filter tank. Leave cap off during winter.
    2. Depress Vari-Flo control valve handle and rotate so as
    to set pointer on valve top between any two positions.
    This will allow water to drain from the valve. Leave
    valve in this "inactive" position.

    In regards to the pump and bringing indoors vs. leaving out in sub freezing temps-
    We just switched to a MaxFlo 2 Speed 230V pump this year, hardwired.
    We removed it and pulled it indoors just yesterday. My experience with winter is if winter can destroy something it will. Better safe than sorry. We also drain our pool down below frost level...well below what most pros will recommend. I tried vehemently to get my other half to NOT drain it below about 18". He wouldn't budge. Experience, once again, was the teacher here. Once burned... Anyway wonder if any of you have any stats regarding pumps in winter...what is the fail rate for pumps left out in sub freezing temps for extended length of time, higher than those that were brought indoors? Is there such a stat out there, has anyone actually documented such a test - say like, over a 5 year period?
    Julie M.
    Pool Website
    Pool Owner
    27K gal, IG concrete Lazy L shape installed 1991 2nd owner, 2013: 1st season with Hayward 1 HP MaxFlo XL dual speed pump, Hayward ProSeries Top Mount 300lb Sand filter, Shark Vac XL cleaning robot (previously Hayward DE filter and 1 HP century pump, Polaris 380 suction side cleaner) Country Dweller

  12. #12
    Senior Member X-PertPool's Avatar
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    Re: winterizing with a sand filter

    I can almost guarantee there isn't a stat out there; at least not official. Leaving the pump outside just leaves it exposed to the elements more. Also the pump is not moving for that period of time so things can get rusty etc. Bringing it indoors is just a way to avoid unnecessary exposure to the elements. But if the motor is hardwired I would leave it in place as removing and re-installing wires on the pump tend to cause the wires to break from bending so much. So unless you plan on having the motor rewired to a simple plug outlet I would recommend a motor cover (or a waste basket from the dollar store cut to shape with a knife) Basically you don't want to wrap the motor in plastic as this just traps in moisture. By having a lose fitting motor cover etc on the motor it keeps the snow and rain directly off the motor but still allows it breathe and dry up.
    -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

  13. #13
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    Re: winterizing with a sand filter

    Anyone that lives in Northern climes would be fool hardy to leave any piece of electrical componenty outside exposed to the elements. I suggest to remove the Multiport completely and store it in a shed, cover the top with an old piece of liner from when pool was installed, leave drain cap off, no antifreeze is required inside the filter with the multiport removed, water will flow out.
    Canada
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  14. #14
    Mod Squad linen's Avatar
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    Re: winterizing with a sand filter

    Quote Originally Posted by julieswimtown

    Post Posted: October 2nd, 2013, 12:41 pm
    Interesting to note: Hayward Manual for the S244T 24" 300# sand filter, states only this in their instructions for winterizing:
    .
    WINTERIZING
    1. Completely drain tank by unscrewing drain cap at
    base of filter tank. Leave cap off during winter.
    2. Depress Vari-Flo control valve handle and rotate so as
    to set pointer on valve top between any two positions.
    This will allow water to drain from the valve. Leave
    valve in this "inactive" position.
    I follow this for my sand filter and have had no problems (3+ years).

    I bring my pump into my slightly heated garage for the winter.
    TFP Moderator who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

  15. #15

    Re: winterizing with a sand filter

    Thanks all for your input.
    X-PertPool - when we removed the pump, we disconnected at box - it's on it's own out there - so the wires on the actual pump itself were not touched.
    pooladdict and linen: I've heard both ways, so I'll go with the Hayward instructions this year and leave the multiport in place (will remove the pressure gauge and sight glass though) will cover the multiport and see what happens. Snow in the forecast tomorrow :O
    Julie M.
    Pool Website
    Pool Owner
    27K gal, IG concrete Lazy L shape installed 1991 2nd owner, 2013: 1st season with Hayward 1 HP MaxFlo XL dual speed pump, Hayward ProSeries Top Mount 300lb Sand filter, Shark Vac XL cleaning robot (previously Hayward DE filter and 1 HP century pump, Polaris 380 suction side cleaner) Country Dweller

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