DE leaks into pool; and filter clamp leaks elsewhere

[Lowdown]

I am having this same problem, my filter is leaking at the clamp and causing the water to flow back through the skimmer into the pool. I thought about the check valve which would stop the back flow but I need the leak stopped. I tried replacing the o ring with lots of lube, but that made it worse. old o ring is back in and clamp is tight but still leaking. I am new to this so don't know much, so I have enlisted the help of a pool company (coming out today). So my questions are what could cause the leak at the clamp and approximately how much should it cost to fix?

[PoolDoc]

Absolutely NO idea.

I don't know what filter you have or what what clamp you mean.

But, I'm spinning this off into it's own thread.

[Lowdown]

It's Hayward pro grid de4820 and leaks at the clamp that holds the two halves of the filter cover together, Sorry I should have given more info to you to help you better understand what I was talking about

[PoolDoc]

Usually leaks in that location mean:

1. The filter was re-tightened unevenly. On many large clamps like that, you need to tap them with a rubber hammer as you tighten, so the clamp can slide and tighten evenly.
2. The O-ring has deteriorated.
3. The groove the O-ring was in OR the O-ring itself was not rinsed 100% clean before re-assembly.

Waterbear can probably think of some other reasons.

[BigDave]

The manual for this filter has pretty specific requirements for closing the filter.

[Lowdown]

I do not have a manual for this filter. Pool was put in prior to us buying our house. I will have to look up the manual on the web and see if I can get one. Thanks for the advice guys. I am limited to the weekends to work on the filter due to the fact that my wife works during the day and I work at night and we have a 1 year old which I watch alone during the day. I have tried to fix it the past 2 weekends to no avail and my pool is looking bad. This is why I have enlisted a pool guy to help. He gives a free estimate and came by today to look at it. Said he will email an estimate to me but did tell me there would be a $60 service charge plus whatever else, which I assume will be parts and labor if I have him come back to fix the leak

[waste]

I think your DEX-2400-K 0-ring may be shot

Unfortunately, Hayward stopped producing them in April of 2009. [I wrote a post on Trouble Free Pool about it here.]

Please check the o-ring for pinches and/ or squared off edges. For your unit, you may end up having to purchase the ~new S.S. replacement kit - but, it'll be less than a new filter.

** I've NEVER seen the S.S. replacement -- but I'll be happy to tell you what little i know.**