What Hayward sand filter would replace the s240

This is sort of a two-fold answer, as I am not exactly certain if you are referring to replacing the sand filter media itself or the sand.

Most manufacturers will tell you that the sand filter media itself is a permanent media filter. The only reason to throw the filter away would be after the sand calcifies into a solid block of concrete. The industry has spent 40 years telling the professional industry that sand is forever. Sand media is forever and you never have to change it.

However... this is what Hayward Pools is telling their customers:

On average, sand should be replaced every 3-5 years. The jagged edges of the sand wear down and become smooth as the sand ages. When this happens the sand can no longer trap debris particles and dirt can pass through the sand and back into the pool. As the sand ages, it may start to clump and the water flow can form channels in the sand, allowing the debris to pass through.

I have also talked with several others who believe what Hayward is saying, that basically every 3-5 years it should be changed. We have a strong belief in what Hayward says.

Hope that helps.

Mark
Bath & Spa Parts Online
http://www.bathandspaparts.com

Either broken lateral drain assembly or the manifold.

If fairly new filter, it could be that you have overfilled the amount of sand, as it is too close to the bottom of the variable position Multiport filter valve.
Hayward SX244DA Lateral Assembly With Pipe

All hayward stickers are replaceable at you local hayward retail store but easy way to know where backwash is usually the bottom of dial usually patent number is at bottom, Filter at 12 o'clock, waste at1 o'clock, backwash at6 o'clock, recirculate at8 o'clock rinse at10 oclock

Holding the tank together? I assume you have an S160, S200 or S240. If so the two halves just lift appart although they usually need a good pull or pry to break the air vacuum in them. If not, please verify the model number and if you mean the tank itself or the valve on top or off the side of the unit.

John

The 240 takes 300# of sand.

John

When sand returns to the pool, there is a hole in either the media or the sieve that is supposed to keep the sand in the filter.
All of the sand must come out of the filter, the sieve at the bottom (outlet of the filter) must be removed and any broken segments must be replaced.
The sand is then returned.
Gary

dead algae is made up of microscopic particles. Most sand filters have trouble filtering out particles that small. I would recommend using a flocculent that will force the particles to settle to the bottom, you can then set the multiport valve to the "waste" setting and vacuum as much of the debris as possible. You can use an additive like fiberclear to help the filter clear the water up quicker.

Have you tried backwashing recently? If so, I would first check to make sure that your pool filter is on the "filter" setting and has not been changed. Next, i would evaluate your filter pressure to make sure that it is at an acceptable level. Finally, check your sand. If it is extremely dirty or has not been replaces in a long time, it might be time for fresh, more effective sand.

if u used play sand, or any other type of sand thats NOT pool filter sand, that could be the problem. also if there is too much sand or too little sand that could also cause this.