Question about Hayward SAND FILTER, PRO SERIES
Sand filters only have limited filtration. If the dirt is very fine such as dead algae, it will go right through the filter. Use a clarifier to help give the filter finer filtration. Do not vacuum until you can see what you are doing, then vacuum on 'waste'
Posted on Oct 12, 2012
Great advice about settled dirt and fine silt on pool floor = Vacuum to WASTE!
Reason: Chances are HIGH that that particulate is much smaller than the sand bed of the filter can actually trap!
therefore it will just pass right through back to the pool as UNFILTERED.
Vacuuming to waste is an option, But... With water restrictions popping up in many communities and actual fines for wasting water, another solution is to use a Filter Aid, when vacuuming which will allow you to use the 'Filter' mode vs. 'Waste' mode!
This is a product that you add thru the skimmer to "Coat" the top of the bed of sand, which will allow a much smaller "Micron" to be filtered.
Microscopic particulate is measured in microns.
The best a sand filter can filter, is approximately 25 microns.
A product that is used as a filter aid, can filter down to approximately 5 microns.
So in actuality when a sand filter is in use, anything smaller than 25 microns will pass right through that filter, as unfiltered.
Just for fun, take a look at this link, it provides a table of common types of particulate. And their average size. You may be surprised to see what is passing right through that sand filter.
Particle Sizes
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Posted on May 05, 2015
SOURCE: There's sand in my pool!
I have had this issue with several clients and before worrying, you might have had sand being drawn back into pool lines during winterization. this happens when you blow out lines, plug holes, but keeping it pressurized. if it keeps happening check draw fins on bottom of filter.
Posted on Mar 02, 2009
SOURCE: filter is shooting sand back into the water when
SOUNDS LIKE YOU ARE IN RECIRCULATE MODE TAKE HANDLE AND MOVE IT TO ALL THE POSITION TO TEST BACK WASH CYCLE ETC SAND SOULD BE FINE CHECK TO SEE IF YOU HAVE ENOUGH
Posted on Jun 19, 2009
SOURCE: i have a 1 year old hayward sand filter and now
your setting is more than likely is not in the right position handle on top of filter has a sprocket under handel which is either not seated or has damage to it try turning handle to different positions several times sounds like you are stuck on recirculate
Posted on Jul 13, 2009
SOURCE: We have a hayward sand filter and have replaced
There is more than one version of these valves. The model like sp072 has a 5 spoke spider gasket that has one opening larger than the rest. Be sure it is in position so that the large opening lines up with the large opening in the valve. If it's a SP0714 then the rubber is molded on the valve itself and would have to be replaced together. In either case, the seal is provided by the spring pressure forcing the valve faces together. That is why you should depress the handle, and only turn the valve while it's depressed, and the pump is off. After you turn to the selected location, then you release handle, and the valve surfaces should spring back together. Be sure the lever has spring tension on it in case you left it out while working on it) You can download complete manuals from www.haywardnet.com Good luck!
Posted on Aug 07, 2010
SOURCE: I have a hayward SP714
Sand filters have a screen at the bottom. This screen keeps the sand from getting out because it has slits or holes that are smaller than the size of the sand grain. The slits are large enough for the water to pass. If the material breaks there are areas that are large enough to allow the sand to pass and this won't stop until you replace the strainer elements.
In order to do this, you must remove the sand, remove and inspect the strainer and replace the sand.
Bring your model to a local pool supplier, confirm what I am saying, make sure they have the necessary parts and go from there.
Gary
Posted on Feb 26, 2011
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I emptied the sand and inspected all plastic parts. All seem fine. I replaced with new sand. I'll report on how that does next week.
New sand solved the problem. The pool shop told me I was likely backwashing too often, which opens channels in the sand and would cause the problem I was having. They suggested waiting until I see a significant increase in the water pressure before backwashing. Pool is crystal clear now!
I am having the same problem, I replaced the whole valve and that didnt slove the problem. Sounds like the sand is my next big purchase
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