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Thread: D.E. Filter Problem

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    D.E. Filter Problem

    I have an 11 month old Hayward EC75A D.E. Filter. It is rusting inside (tube sheet screws & nuts). I have a chlorine pool with vinyl liner. Is this common?

  2. Back To Top    #2
    Mod Squad Bama Rambler's Avatar
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    Re: D.E. Filter Problem

    It's not common but there have been a few reports of it. Can you post a full set of test results?
    Can you post some pics of the filter in and outside?
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: D.E. Filter Problem

    Thank you for the reply. I will see what I can do for pics.

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    Re: D.E. Filter Problem

    I think the response I have received from Hayward is worth posting:

    techsupport@haywardpools.com 1:46 pm (2 days ago)

    Dear Mr J. A.,

    The problem you have is not common and it could relate to water chemistry. The screws and nuts are manufactured of marine grade stainless steel but highly acidic water could still cause them to rust. Please contact the dealer that you purchased the filter from.

    Regards.
    Ross

    Hayward Technical Services
    One Hayward Industrial Drive
    Clemmons, NC (USA) 27012
    908-355-7995

    Then, the response from the dealer:

    Dear Customer,

    Thank you for your recent Amazon/In The Swim inquiry. I apologize for the inconvenience, I spoke to our tech specialist and they said the same thing, this is not a common problem on these products. It is likely caused to high acidity in the water chemistry. Unfortunately, this is not covered under the warranty, and the product actually only had a 1 year manufacturer's warranty.

    I apologize for the convenience.

    Guadalupe Manzano
    Amazon/In The Swim Specialist
    In The Swim

    After checking my paperwork, I notified the dealer 1 yr. & 2 days after I ordered the filter. It was actually only in use for 6 months. I am an experienced and knowledgable pool owner and my water chemistry is always well within the recommended guidelines. I am shocked at the responses from the manufacturer and dealer. I am going to post pics and results as I investigate the cause of this rusting.

  5. Back To Top    #5

    Re: D.E. Filter Problem

    I have attached 3 pictures of the filter rust. This filter has been used for 6 months. How can it be rusting so severely? In the 8 years I have had this pool the water has been always been kept well within water standards. Any comments would be helpful. Thank you. [attachment=0:2ggtm2qo]Filter rust pic 3.jpg[/attachment:2ggtm2qo], [attachment=1:2ggtm2qo]Filter rust pic 2.jpg[/attachment:2ggtm2qo], [attachment=2:2ggtm2qo]Filter rust pic.jpg[/attachment:2ggtm2qo].
    Attached Images Attached Images

  6. Back To Top    #6
    Mod Squad Bama Rambler's Avatar
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    Re: D.E. Filter Problem

    What does your pH normally run?

    Can you post a full set of test results?
    In fact if you keep a record a few sets of results may help.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

  7. Back To Top    #7

    Re: D.E. Filter Problem

    Thank you for replying. I have been unsuccessful in attaching scans of my test results over the past years, so I will have to just summarize by giving the averages: chlorine- 1.5-2.5, ph- 7.2-7.6, alkalinity- 80-110. I have not had any problems from my water before- equipment or swimmers. I don't know how marine grade stainless steel could rust like this so rapidly. Any comments would be appreciated.

  8. Back To Top    #8
    Richard320's Avatar
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    Re: D.E. Filter Problem

    Is there any chance you may have put trichlor pucks in teh skimmer? Or dichlor, or CYA? Maybe the PB did?
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  9. Back To Top    #9

    Re: D.E. Filter Problem

    Thank you for the reply. No, I have a Pentair Model 320 in-line feeder that I have always used only trichlor 3" tabs in. The rate of chlorine usage has always been very moderate. I am the only one that services my pool. Wouldn't it take high levels of chlorine to cause rust like this on marine grade stainless steel, over a longer period than 6 months?

  10. Back To Top    #10
    Richard320's Avatar
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    Re: D.E. Filter Problem

    Quote Originally Posted by jimdee1
    Thank you for the reply. No, I have a Pentair Model 320 in-line feeder that I have always used only trichlor 3" tabs in. The rate of chlorine usage has always been very moderate. I am the only one that services my pool. Wouldn't it take high levels of chlorine to cause rust like this on marine grade stainless steel, over a longer period than 6 months?
    Yes. Except there have been people who like to dump various powders in the skimmer to let them dissolve in the filter. Just checking you weren't one of them.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  11. Back To Top    #11

    Re: D.E. Filter Problem

    Have you seen or heard of any rusting like this on an almost new Hayward D.E. EC75A filter? Hayward's and In The Swim's (the dealer) response to this really surprised me.

  12. Back To Top    #12
    UnderWaterVanya's Avatar
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    Re: D.E. Filter Problem

    Quote Originally Posted by jimdee1
    I think the response I have received from Hayward is worth posting:

    techsupport@haywardpools.com 1:46 pm (2 days ago)

    Dear Mr J. A.,

    The problem you have is not common and it could relate to water chemistry. The screws and nuts are manufactured of marine grade stainless steel but highly acidic water could still cause them to rust. Please contact the dealer that you purchased the filter from.

    Regards.
    Ross

    Hayward Technical Services
    One Hayward Industrial Drive
    Clemmons, NC (USA) 27012
    908-355-7995

    Then, the response from the dealer:

    Dear Customer,

    Thank you for your recent Amazon/In The Swim inquiry. I apologize for the inconvenience, I spoke to our tech specialist and they said the same thing, this is not a common problem on these products. It is likely caused to high acidity in the water chemistry. Unfortunately, this is not covered under the warranty, and the product actually only had a 1 year manufacturer's warranty.

    I apologize for the convenience.

    Guadalupe Manzano
    Amazon/In The Swim Specialist
    In The Swim

    After checking my paperwork, I notified the dealer 1 yr. & 2 days after I ordered the filter. It was actually only in use for 6 months. I am an experienced and knowledgable pool owner and my water chemistry is always well within the recommended guidelines. I am shocked at the responses from the manufacturer and dealer. I am going to post pics and results as I investigate the cause of this rusting.

    I think I would scan those tests and send them via certified letter to both dealer and Hayward and also point out that the contact to the dealer was made 1 year + 2 days and the damage was obviously prior to the contact and must have occured during the warranty period.
    Inlaws Pool Boy since June 14th 2012, Pool built ~ 2003, In-Ground, 16'x32'
    13500 gal, Vinyl Liner, Fiberglass Slide, TF-100 Test Kit, Hayward 210T
    sand filter, A.O. Smith 1.5HP main pump motor (C48L2N134C1),
    Hayward SuperPump (model ?), Polaris 380 & PB4 Booster Pump

  13. Back To Top    #13

    Re: D.E. Filter Problem

    Thank you- I will probably have to do something like that.

  14. Back To Top    #14

    Re: D.E. Filter Problem

    From the little research I have done, it would take water with a ph less than 6 and chlorine levels over 200 ppm to pit marine grade stainless steel. These bolts and nuts are rusting rapidly.

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    Re: D.E. Filter Problem

    It looks like they didn't give you stainless steel bolts and nuts.
    23,000 gal IG Plaster 1989
    Purex Triton FNS Plus DE Filter Model FSNP 60
    1 Hp pump, Polaris 380 w/booster pump
    700 Gal Spa
    Laars Lite Heater T-F 100 Test Kit

  16. Back To Top    #16

    Re: D.E. Filter Problem

    Thanks for your reply. At this point, that looks like a real possibility. But, that would be a big thing to claim, considering the size of Hayward and all the products they make. This isn't about just me so I want to be very fair about it. I will say being "blown off" like I was by the dealer, In The Swim, was really surprising and disheartening.

  17. Back To Top    #17
    UnderWaterVanya's Avatar
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    Re: D.E. Filter Problem

    Can they be tested?

    Also I saw another thread where rust in a light was attributed to improper bonding. Is that a realistic possibility in cases like this? Are filter systems even bonded?


    - Sent using Tapatalk
    Inlaws Pool Boy since June 14th 2012, Pool built ~ 2003, In-Ground, 16'x32'
    13500 gal, Vinyl Liner, Fiberglass Slide, TF-100 Test Kit, Hayward 210T
    sand filter, A.O. Smith 1.5HP main pump motor (C48L2N134C1),
    Hayward SuperPump (model ?), Polaris 380 & PB4 Booster Pump

  18. Back To Top    #18

    Re: D.E. Filter Problem

    Thanks for the reply. To my knowledge there is no bonding like you have mentioned in this filter. I would like to know if any other owners of a Hayward D.E. Filter are/have had rusting problems like this. I paid over $400. for this filter and it has been used only 6 months.

  19. Back To Top    #19
    Mod Squad Bama Rambler's Avatar
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    Re: D.E. Filter Problem

    They're calling that "marine grade" stainless but it's most likely 304 or even 302. The issue with either of those is partial submersion and splash. If they're completely out of the water or they're completely submerged they do fine. If they're exposed to partial submersion or heavy splash they will corrode.

    If you have a lot of air in the filter at times it could cause the problem you're seeing. Replacing the fasteners with 316L stainless should help the problem a lot.

    Also, since you use tablets exclusively I suspect the pH gets low quite often even if you don't notice it. Tablets have a very low pH and unless you keep a very close eye on it it will drive your pH down. What test kit do you use to test the water?
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

  20. Back To Top    #20

    Re: D.E. Filter Problem

    I use a 5 solution test kit. I think you are right about the steel not being marine grade (316) stainless. From the looks of the tube sheet screws & nuts, I'm not sure they're even stainless! In a previous reply you mentioned some other reports of rusting. Are they similar to mine? Thanks.

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