Question about Hayward EC-40 DE Pool Filter with pump

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De blowby entering pool replaced both gaskets in variflow as well as checked filter grids

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If you have DE blowing back into the pool with this pool filter, there is really only a couple things that it could be. Either there is a hole in the grid fabrics or the o ring needs to be replaced. If you have checked the grids and don't see anything, it could be a hole that is not visible. You are probably going to have to replace the grid material.

Posted on Sep 07, 2010


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1 Answer

I replaced the diaphragm gasket and when I bump the filter some DE still shoots out into the pool. all the tube sheet hex screws are all tight. Paul

There are several things to check when correcting DE leaks in these pool filters. If you have already replaced the diaphragm gasket and tightened the screws, check for an opening or tear in one or more Flex-Tubes. Replace them one or all as necessary. Make sure that you have the proper amount of DE and that you don't have holes in your grids.

Oct 03, 2010 | Hayward EC-40 DE Pool Filter with pump

1 Answer

I have Hayward EC-45 filter leaking DE into pool via return line every start up. Checked all troubleshooting causes (tube tears, bad gasket, cracked tube sheets, loose bolts, o-rings, etc. All looks OK to...

If D.E. is returning to the pool, it's usually because you have a tear in the grids or the backwash valve is not working properly and returning D.E. back to the pool.

Aug 24, 2010 | Hayward 1.5 Hp Northstar High Performance...

1 Answer

I just replaced the grids in my filter, now when i turn it on water pores from the top of the filter, what would cause this? the filter is about 7 yrs. old. thanks.....


May 23, 2010 | Hayward 48 Sq Ft Pro Grid Vertical Grid De...

2 Answers

DE getting into the pool

The grids are the first place to look. You also want to check the manifold for cracks they will usually show up on the underside. Also the air bleed sock on the top of the manifold. Lastly check the grid spreader on the bottom to be sure it is flat and not warped. The grids are the first place to look though and be sure you hose them off well and check for broken frames inside them.

May 21, 2010 | Pool & Spa

1 Answer

I'm getting DE back in my pool from the 4820 filter

One of two things can cause this. Either the spider gasket is bad or there is a rip or tear in one or more of the filter grids.
(the spider gasket is inside the valve you turn to backwash filter)

Mar 25, 2010 | Hayward 48 Sq Ft Pro Grid Vertical Grid De...

1 Answer

Why is my harward pro grid de filter shooting out all the debris it collects? It will collect and hold it all day until it restarts the following morning and then it will shoot the de and all other debris...

Chances are you have a torn grid inside, sometimes debris will cover the tear while it's running, then when the pump shuts off the debris settles to the bottom of the tank. Then when the pump turns back on, it shoots DE and debris through the tear until something else plugs it. Tear the filter down and inspect the grids, replace as necessary.

Nov 16, 2009 | Hayward 48 Sq Ft Pro Grid Vertical Grid De...

1 Answer

De powder coming back into pool water from filter

make sure your grids are properly seated and if you have a multiport valve, take it apart and make certain your spider gasket is in place and not distorted. That is the only other reason DE would return into the pool. If you have a slide valve, make sure your o-rings inside are in good condition and properly lubed.

Nov 01, 2009 | Hayward 48 Sq Ft Pro Grid Vertical Grid De...

1 Answer

De leaking back into pool

I had the same problem, and they suggested I had a tear or whole in one of the grids. After close inspection, I found no hole or tear, and the maniford was fine. I opened the multi-port valve and found the problem. It has a gasket inside and it had badly deteriorated. I replaced the gasket and no more problems with DE coming back into the pool.

Jul 03, 2009 | Hayward 48 Sq Ft Pro Grid Vertical Grid De...

1 Answer

I have a Hayward de 3600, DE powder is getting into the pool,any suggestions?

You will need to take the filter apart and check the grids, the manifold and the internal air bleed. If you have'nt done this in more than a year that can cause your grids to go bad. Or if your pool has gone green and you ran it before killing all the alge this will hurt your grids also. After you get it apart check the grids for holes or tears and see if the frames inside the grids are broken in any way. Check the air bleed the same way, and see if their are any cracks in the manifold. If any of these things are a problem they will need to be replaced. If alge is a problem you need to kill it before you can clean it out of the pool. Do this by super chlorination. And be sure to break down your filter and hand clean it at least once a year. Hope this helps.

Jun 24, 2009 | Hayward Micro Clear 25 Sq Ft Cartridge...

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