Question about Hayward SAND FILTER, PRO SERIES
When removing the old sand, you have to be extremely careful not to break any of laterals at the bottom of the tank. Also, when you added the sand, you should have filled the tank with water at least up to the lateral assembly/hub. If you have not broken a lateral and filled the tank with water up to the laterals before adding the new sand, you could have a problem with the multiport valve. Make sure the spider gasket inside is in place and not damaged/deformed. Also make sure the spring is not broken. Those are the only problems you can have with sand returning to the pool.
Posted on Sep 16, 2010
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Posted on Jan 02, 2017
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