Periodically you have to clean the debris and contaminants out of your Hayward DE Filter. This process can be done at three levels: 1- by backwashing the filter; 2- by extracting and cleaning the grid assembly; or 3- by extracting and cleaning each grid in the assembly. For more information on Backwashing, see our guide on "How To Backwash a Hayward DE Filter". For a more thorough cleaning, you can extract and clean the grid assembly. This guide discusses the procedure for this second level of cleaning the grid assembly. For the most thorough cleaning, you can pull the Grid Assembly and take it apart to wash down each Grid individually. This third level of cleaning is generally done once a year at the end of the season.
SJM Posted: 6/13/2021
My Hayward filter doesn't have a drain plug.Reply
InyoPools Product Specialist Matt S. Posted: 6/17/2021
What is the model number of your filter?Reply
Chris Posted: 3/4/2021
Do I need to backwash or use the "waste" option after the filter is cleaned and the lid goes on? I've seen some videos that do, but not certain as to the purpose.Reply
InyoPools Product Specialist Matt S. Posted: 3/4/2021
You can do a quick backwash or rinse before recharging your grids with powder if you think there may be debris that needs cleaning. It's not required, but it doesn't hurt.Reply
Anonymous Posted: 8/5/2020
How frequent if any should the filter grid be replaced?Reply
InyoPools Product Specialist Matt S. Posted: 8/20/2020
When fabric or plastic skeleton starts to tear or break. To help lengthen the lifespan of the grids, I suggest giving them a chemical soak to clean the fabric's nooks and crannies once a year. How To Chemically Clean a Pool Cartridge FilterReply
Daniel Turek Posted: 6/4/2020
Any suggestions for removing a Hayward DE7220 grid assembly. It's very tall a too heavy to lift out of filter.Reply
InyoPools Product Specialist Matt S. Posted: 10/23/2020
I'd give the grids a hose down to dislodge the old DE. The caked up DE can add a good bit of weight to the assembly. If the grid assembly is still too heavy, let the grids dry off to shed any remaining water weight.Reply
John Posted: 5/29/2020
Dumb question - Will the pressure gauge "reset" itself after cleaning?Reply
InyoPools Product Specialist Matt S. Posted: 10/23/2020
Yes, the pressure gauge will go back to its "clean" PSI after you have purged all the dirt and debris.Reply
Waldemar N Giancaspero Posted: 5/18/2020
Very good explanation, thanksReply
Inyopools Posted: 7/18/2018
Hello Edward - Try lubricating the o-ring again. When you're tightening the clamp, tap it with a rubber mallet. This should give you a better seal. It may be the incorrect o-ring or a defective o-ring if it continues to leak.Reply
Anonymous Posted: 5/25/2018
Purchased new o ring, installed it,as usual, turned on equipment and water Gushed from 2 halves of filter tank. Tried it twice, same resultReply
InyoPools Product Specialist Dennis R. Posted: 7/7/2017
Lxathome - If you see no change in the water pressure after cleaning the Grid Assembly, you may have to do a more thorough cleaning of each grid. See our guide on "How To Remove and Clean Hayward DE Filter Grids". If the grids are old, you might consider soaking them is a cleaning solution like TSP to get any stubborn suntan lotions or chemicals out of the fabric. If they are really old, you might consider replacing them. Also, check for any blockages in the return pipes after the filter.Reply
Lxathome Posted: 7/5/2017
After cleaning grids tank pressure still at 30 lbs.Reply
InyoPools Product Specialist Dennis R. Posted: 6/24/2017
VictorNY - Pull the tank apart again and recheck the tank O-ring. if it is old, stretched or damaged, you should replace it. Also, check the small O-ring on the white standpipe (seen in Step 18). Make sure it is in place and not damaged. Then I would backwash the filter again and only replace 80% of the DE powder to see if that helps water flow. 20% of the DE powder is left in the tank after backwashing. You may have too much DE in the tank.Reply
VictorNY Posted: 6/21/2017
Just cleaned my DE filter today. After replacing, I have very low pressure. Air infiltration from somewhere.Reply
InyoPools Product Specialist Dennis R. Posted: 6/4/2017
froggy47 - If your filter is that old, it probably has some corrosion build up on the surfaces. Try wiping the joining surfaces of the two pipes with a cleaner like CLR or TSP. to remove the buildup. You might ever use a fine grit of sandpaper.Reply
froggy47 Posted: 6/1/2017
I just took mine apart (20 yr old). To clean. Every time I stand on the lower 1/2 "lips" and pull straight up. It ALWAYS hangs up on the "riser pipe" and I have to twist/pull/twist/pull with all my force to get it off. I am a strong guy.I always lube that pipe connection & o ring. Is there anything else I can do to make it come apart easier?
I am gonna give myself a heart attack one of these times.
:)
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InyoPools Product Specialist Dennis R. Posted: 7/24/2016
John Garrity - No, I would not recommend using muriatic acid in your filter. If you are talking about the grids, it would be too harsh on the fabric. Use TSP instead - at your local HW store.Reply
John Garrity Posted: 7/22/2016
Do you recommend the use of muriatic acid to clean a Hayward DE Filter? And how loose/tight should the filter body O-ring be?Thanks.
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