SOURCE: using a hayward vari-flo valve model SP 710x32
Do not drain a vinyl liner pool mor than half way....ever... If you have a fiberglass, or gunite pool it is important to pull the hydrostatic plug under the main drain cover. If you live down a hill, or where there is a high water table, the water pressure underground can lift the empty pool out of the ground (more common in fiberglass pools). If you have a sand or DE filter switch the valve to waste. make sure that you have the skimmer turned off, and the pump is only sucking from the pool main drain (spa drain closed also), and turn the pump on. Make sure the waste hose is far enough away so you dont add any hydrostatic pressure.
SOURCE: Hayward vari flo valve
If the spider gasket in the vari-flo valve is no good, you will usually notice one of two problems.
1. Water leaking out backwash port while filter is operating.
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.
SOURCE: How can I find the installation instructions for
http://www.haywardnet.com/inground/products/displayProd.cfm?ProductID=66
SOURCE: need a manual for my hayward sp714 multiport
Here is the link to the manual for your valve....Hayward SP0714
SOURCE: I lost the valve position
Try this:
https://www.hayward-pool.com/pdf/manuals/manual18.pdf
Your valve may not have the winter notch but it's layout will be the same.
John
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