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Thread: New Sand Filter Pump... Where to begin

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    JulieS's Avatar
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    New Sand Filter Pump... Where to begin

    I just received my 2650 Gallon Sand Filter Pump W/GFCI and have properly installed it using the adapters that came with it for now. Down the road I will cut the holes and use the standard parts. I have some pretty basic questions, some may even give you a good laugh!

    Once my pump was assembled, it instructed me to backwash until the water in the little bubble thing ran clear water, so I removed the cap and backwashed as directed.

    Then I was instructed to rinse, but didn't know whether or not to put the cap back on, or does it rinse through itself??

    From there it said turn to filter and let her go, then document the pressure gauge. I was about center of the green, which seemed good, then after about thirty minutes, it was right on the line between green and yellow. Do I just keep backwashing until it's back in the green? Is there an average time that it takes to backwash?

    I am exhausted for now, but I'm sure I'll have more questions soon. In the morning I'll read through pool school again!

    Thanks!
    Intex AG Round 15'x42" About 4600 Gallons.
    2650 Gallon Sand Filter Pump W/GFCI .
    K-2006 test kit.
    Here in the beautiful Southwest Michigan!

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    linen's Avatar
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    Re: New Sand Filter Pump... Where to begin

    Rinse also goes through the waste port, so you need to leave the cap off.

    We recommend backwashing when the pressure goes up 25% from the "clean" pressure. This is a little trickier on the intex gauge, since there are no numbers (I think). You can estimate on the gauge when the needle moves up the equivalent of 1/4 of the "clean" pressure, or you can monitor the flow coming out of the return and when it is noticeably lower than when clean, backwash then.
    TFP Expert 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.

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    JulieS's Avatar
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    Re: New Sand Filter Pump... Where to begin

    I have tried to backwash my pool a couple times now, and the pressure goes down, then I rinse and turn to filter and the pressure goes right back up to the top of the green. How long does it generally take to properly backwash a pool? I would really like to get this figured out so that I'm not afraid of damaging the pump! I would also like to be able to aerate soon so I can get my pH up to take the TA down! I'm so close to being able to add the borates!!

    This site is so helpful, I have referred several people I know, and they can't believe how much GOOD RELIABLE information there is on this site! I don't know where I would be without the help I receive here!!
    Intex AG Round 15'x42" About 4600 Gallons.
    2650 Gallon Sand Filter Pump W/GFCI .
    K-2006 test kit.
    Here in the beautiful Southwest Michigan!

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    frogabog's Avatar
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    Re: New Sand Filter Pump... Where to begin

    It only takes a minute to rinse clean new sand enough. I think the pressure is high because you're using the small ports.

    Check all the strainers for something stuck. Is the return flow good? If so, I'd say let it run at that pressure. Watch the gauge tonight, and if it stays where it is that's your working clean pressure.

    When I first started mine, it ran at 0, or maybe 1psi for first few hours. Then it rose to perhaps 4psi and pretty much hung there for over a week.
    Where kids swim in 54 degree water, turn blue, and giggle happily cuz they got a POOL!
    Year 3 BBB -15' x 48" Intex Metal Frame - Was using (2) 1000gph Intex cartridge filters (see Full time pumping Intex). 2012, converted to 1600gph and sand filter+SWG = Sand filter love affair!
    Don't waste time and energy looking for a better value on test kits, the TF100 is the best deal around. I did the looking and spent the extra money, but you don't have to make the same mistake. Just go here: TFTestkits. I use Pool Calculator for min/max, and shocking chlorine levels.

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    In the Industry

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    Re: New Sand Filter Pump... Where to begin

    Quote Originally Posted by JulieS
    How long does it generally take to properly backwash a pool?
    !

    Backwash 2-3 mins. or until you see "clean" water coming out discharge hose.

    Rinse 30-45 seconds
    "When your pool is sick, call the doctor, I make house calls"
    One stop pool shop, I do everything but install them. 9+ years of experience.

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    JulieS's Avatar
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    Re: New Sand Filter Pump... Where to begin

    Thank you both so much for your replies, I feel much more comfortable using the pump! It's a huge change to go from a tiny cartridge pump to a giant sand filter pump! Now if only I could use the pool too... It's still nice to see my family enjoy the pool, and that makes all this learning worth while.
    Intex AG Round 15'x42" About 4600 Gallons.
    2650 Gallon Sand Filter Pump W/GFCI .
    K-2006 test kit.
    Here in the beautiful Southwest Michigan!

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