Question about Hayward SAND FILTER, PRO SERIES

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My Hayward S200 is leaking from the bottom. What could be the reason?

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  • Tony
    Tony May 16, 2014

    If the tank is cracked, can it be fixed or does it have to be replaced? Same with the drain cap?

  • Osko Pool n Spa
    Osko Pool n Spa May 16, 2014

    The tank can be repaired by sanding the effected area with 80 grit sand paper, completely cleaning and drying the effected area and applying a TWO-Part epoxy resin. The cap can be replaced, but first try a few wraps of Teflon Pipe tape on the drain outlets' male thread and then re-tighten the cap.

  • Tony
    Tony May 16, 2014

    Thank you for the information!


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  • 45 Answers

Either the tank canister has cracked, (probably from ice damage), or your drain cap is missing, loose or cracked.

Posted on May 16, 2014

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Had problems with these types before also. As the filter ages it warps and thats a problem lol.
You said you cleaned the recesses Im hoping top and bottom and lubricated the recesses IN addition to the o-ring, don't hold back on that lube either. And lastly although it sounds odd, dont over-tighten the nuts, tighten them slightly over hand tight turn the pump on for a bit leaking everywher tighten everywhere, leaking in one spot, tighten only that one spot a little.
Putting on all that lube doesnt do too good when it spits it out from pressure.
Also pics next time, and good luck!

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Based on your question, it appears you have a Hayward S200 sand filter with 6-position side mounted valve and a standard pump with a first stage basket with a Lexan sight cover. You indicate that 5 of the six valve positions appear to work properly, drawing water out of the skimmer line, through the valve, and into the appropriate output (such as waste, recycle, backwash, etc.), but that in the normal filter mode your pump runs but no water is drawn from the skimmer through the pump basket.

What you describe is a classic blockage downstream of the pump. First, check to verify any/all downstream valves are in open position. If the filter will operate in backwash mode, it is likely not a blockage within the filter. I suggest you disassemble the 6 position valve and check for any obstruction within the valve itself. Based on your description, it's possible the obstruction might be in the bottom line going to the filter. This line narrows as it approaches the valve, and in normal filter mode an obstruction in this line could log and clog the water path, but in backwash mode water flows away from the valve toward the filter in this line, away from narrow to larger diameter. It's a long shot.

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Are you sure it is leaking from a spot "Originating" at the bottom? Many times this is what is seen, but the water is actually traveling down the side.

If at the bottom, you either have a cracked tank, or the drain cap is loose, missing the cap gasket or it is on "Cross Threaded"?

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Do you have a strong flow of water back to pool? If so, perhaps pressure gauge is defective, pool water is relatively clean or particles are too fine to be captured except through multiple turnovers.

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