Question about Hayward SAND FILTER, PRO SERIES
Make sure the spider gasket in the multiport is not damaged or out of place. Also, make sure the spring is not cracked and the spider gasket seats well when it's on filter mode. If the laterals are good, this is the most likely problem.
Posted on Aug 24, 2010
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Posted on Jan 02, 2017
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Usually sand blowing back into the pool is either cracked laterals, a cracked hub assembly (what the laterals screw into) or a bad spider gasket is wrong with pool filters. If you are certain that the laterals and hub are not cracked then I would try replacing the spider gasket.
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