Question about Hayward SAND FILTER, PRO SERIES

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After backwashing dirt and sand blow back into the pool...the laterals look fine and sand was replaced 2-3 years ago

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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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Pump is blowing cloudy water back into pool


Cloudy water is the bane of sand filters!. I suggest letting filter run day and night. Do not backwash until the pressure rises 8 - 10 pounds above clean starting pressure. Do not try to vacuum or stir up the sediment. when water clears, vacuum to waste. Keep the hose running while vacuuming. A dirty filter is a better filter (up to a point). At a higher pressure the filter will trap more of the fine particles that are clouding your water.

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When backwashing...sand discharges out backwash hose..


A little sand in backwash is not uncommon. Many packaged sand filter systems use pumps whose flow rates greatly exceed the flow capacity of the filter.(the more horsepower the better, right? - Wrong) If this occurs only during back flush the the pump is too strong or the sand level is above the beginning of the rounded top of tank. The sand level will eventually correct itself.

Aug 10, 2012 | Hayward SAND FILTER, PRO SERIES

1 Answer

Dirt passing through the filter


There is no oring from the lateral stand pipe where it plugs into the bottom of the multiport valve.

There is a gasket in the internal valve, commonly called a Spider gasket. Change that.

Jul 14, 2012 | Hayward SAND FILTER, PRO SERIES

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Hayward s166t sand filter has sand in sight glass during backwash


did you get sand in vertical tube if so it will take time to get out of line

Jun 12, 2012 | Hayward S166T Pool Filter System w1 HP...

1 Answer

We opened the pool on Monday and on the bottom was a lot of either fine dirt or sand. We got everything running and it was running fine until Tuesday afternoon. On Tuesday morning I stirred all the stuff...


Have you backwashed your pool filter? It could be that the sand is dirty or a line is clogged, causing the filter to lack pressure. Make sure that your multi-port valve is set to the filter position. It could be a broken lateral or a busted multi-port valve that is causing it not to work, but if it was working before you brushed the bottom and sides, I doubt this is the problem. Before you try any extensive repairs, I would backwash several times and possibly even replace the sand.

May 12, 2011 | Hayward SAND FILTER, PRO SERIES

1 Answer

I have a S21OT sand filter that is running off the pressure guage and flowing sand back into the pool. The laterals are fine, I changed the sand, backwashed for about two minutes, and rinsed, The pressure...


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.

Apr 08, 2011 | Hayward SAND FILTER, PRO SERIES

1 Answer

Inground with hayward pro series we replaced lateral and sand all was fine 2 months have passed and now i have sand in pool again


Thank you for posting your question here on Fixya.com.

First of all, are you certain it is sand? We have received many a phone call claiming sand is back in a pool only to find yellow algae instead. If it is sand again you will need to look at the lateral assembly again. If you didn't add the sand correctly last time you may have cracked a lateral and it has now moved enough to allow sand out. If it is only a small amount of sand inspect the bottom of the multiport valve. Backwashing can bring a small amount of sand into the valve and if you do not rinse the valve following backwash you can get small amounts of sand in the pool.

If this answer does not fix your problem, please comment with additional details prior to rating the answer. Positive feedback is appreciated once your problem is solved!

John

Aug 30, 2010 | Hayward SAND FILTER, PRO SERIES

2 Answers

My swimming pool filter returns dirty water to the


Might you have a broken lateral in the bottom of your filter and what you are seeing is sand coming into the pool?

Do you backwash daily or more often? (You should) Do you have a multi-port vavle or other type?

Im thinking broken lateral. Sucking air in and of itself will not cause dirt to return to the pool.

Whats a lateral? There is a series of pipes in the bottom of the sand with small holes in them. These holes allow water to travel in and out depending on whether you are filtering or back washing ... but not sand. If you have sand, you have a broken pipe.

Open the filter and remove the sand into a bucket to inspect the laterals.

I hope this works for you.

a

Oct 18, 2009 | Hayward SAND FILTER, PRO SERIES

1 Answer

No green comes out in backwash


Alge will quit often go through filter so first you need to kill the alge by super chlornateing the pool. You can take a water sampel to your pool store and give them the size of your pool, they can test your water, for nothing in most cases and recomend what you will need for this. Then you can start cleaning the mess up as the dead alge will turn to dirt. This dirt will be very fine and may go through your filter also so a cup full of D.E. in your skimmer after backwashing will usually coat the top of your sand and catch much finer dust and dirt. Do this as you clean the pool and backwash 1-2 times daily till clean. Follow all directions given to you at store to kill the alge first, this is very importiant.

Aug 09, 2009 | Hayward Sand Filter System & Tank 21" 1...

1 Answer

Sand is in pool after backwash


A little sand is normal, called a puff back. Anything more then a good pinch of sand is a problem If its a lot of sand you can check the following.
1. O-ring in side the filter valve when standpipe inserts is intact. Make sure that standpipe is not cracked and seats well into valve.
2. check spyder gasket inside filter head. (looks like a wagon wheel) if it is loose or is pulling up it will need to replaced or re-siliconed. A good indication of this being the problem is if water is leaking from backwash port.
3. Check hoses to make sure that the to pool, to pump conections have not been reversed, if this was case you would get a lotta sand into pool. (can empty tank)

Jul 04, 2009 | Hayward Pro Series 18" Above Ground Pool...

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