Question about Hayward SAND FILTER, PRO SERIES

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What to do about 14 psi ?

I have a 1995 Vari-flo model 71113. The pressure is only at 14psi. I was told when we bought the house that 25 is the correct operating pressure. What can/should I do? FYI- pressure gauge is brand new. Pool is inground. Thank you.

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The actual pressure depends on how clean the sand is, how well the pump is pumping, how clean the skimmer and pump baskets are. The rule of thumb would be when the filter pressure raises 8-10 psi above whatever the pressure was when you first started the filter with clean sand, clean baskets, good pump, When it reaches the 8-10 psi, it's time to backfulsh. A low pressue, with adequate return flow is what you really want. See Hayward's web site for a manual. http://www.haywardnet.com/inground/products/manuals.cfm

Posted on Jul 07, 2010

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2. Valve positions are really difficult to change.

The way to check this is if you are able to move one or two of the "spokes" in the gasket freely(out of the track it sits in) once the top of the valve is removed.

If so you need to replace. The gasket is usually held in with a silicone sealant. Once you remove the old gasket. You will need to scrape any remaining rubber from the track it sits in. I've found that a brass brush from a pluming supply store or home depot along with a flat head screwdriver is usually enough to do the removal.
I always used Permatex Blue RTV sealant on all valve jobs. It can be found at any auto parts store or sometimes Walmart. Follow the instructions for curing. Once cured the gasket is good as new.

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