Question about Hayward SAND FILTER, PRO SERIES

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Lose vacuum on pool bottom cleaner

When running a bottom cleaner (2 different models, same problem) we lose suction after running over an area of sediment. The cleaners don't get clogged, they're clear. What seems to happen though, is the silt (which looks white like chemical residue) goes straight through the filter (you can see it coming out of the pump after the cleaner runs over a heavy concentration of the silt) and shortly after that, the suction just goes to a minimum. Sometimes stoping and restarting the pump clears it, sometimes I have to run a backflush cycle to get it going again. Any suggestions on how to not lose suction on the cleaner?

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My pool filter runs fine when skimming, but when I attach the droid or manual vacuum the basket has sucked air. Do impellers ware out? Is there a seal between the motor and the impeller that can leak air?

Posted on Jul 25, 2009


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3. now you will notice part of the hose is filled water and part of it is floating ontop of the water with air still in it. Now while sitting on the edge of the pool, pull the hose toward you to where you think the part of it is now full of water. than slowly feed the rest of the hose, hand over hand until the end of the hose and you will see water come out the end, the hose is now totally full of water.
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At this point you might have induced some air into the system and the pump may lose prime or start to lose prime. Go over to the pool equipment and if present, bleed the air out of the filter.
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