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Posted by John on June 6, 2006, 11:09 pm
greilly@zoll.com wrote:
> Well, I got home last night and set-up the vaccuum and right away the
> material came jetting out of the inlets again. So I stopped. I figured
> I would be dismantling the filter and replacing elements. However.....
> I figured I would try one more time with the DE. This time I did not
> pre-mix into a slurry. I merely added it into the skimmer basket
> slowly. And guess what!!!? None of it made it back into the pool!
> >From now on I will not pre-mix it. The pool was crystal clear this
> morning, so I fired up the vaccuum and everything worked as it
> should!!! Lesson learned? Pour the DE ito the skimmer AS IS!! Now if
> it would just stop raining!!
Sounds like you may have blocked a leak in the filter element with a nice
big clump of D.E. The problem with not doing the premix is that the DE
often will not spread very evenly inside the filter so you get big clumps
in some areas (usually near the middle or corners, and thin cover in
others. I would just enjoy the clean pool for now but the next time you
do a backwash, you probably want to open up the filter, pull out the
element, and check for the leaking area. If the media elements are shaped
in a spiral this could take a little time.
When you put the filter tank back together remember to use a torque wrench
and tighten exactly to the spec torque, alternating tightening with the
wrench and gentle pounding all around the O ring with a rubber mallet or
something similar.
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