stromer
05-03-2006, 02:02 AM
I just put my de filter in service after sitting idle for 6 months during the winter. I cleaned the old de off the filter and put the normal amount of de on the grid. It plugged off in 3 days (the pressure went from 4 psi to 25 psi). The water was slightly green but the procedures I used were the same as in the past where the filter ran for several months before plugging. Thus something seemed to have changed. I found out that the filter probably had calcium hardness buildup in the filter cloth since it had never been cleaned of this since I bought it 3 years ago. I then acid washed the filter with muratic acid which was ok with the filter mfg - Hayward. This was meant to dissolve the minerals from the clogged pores with the acid. I then washed the filter with water. I thus thought the filter was cleaned of minerals that might have clogged the filter.
I then coated the filter leaves with the prescribed amount of de. The filter then plugged off in its first cycle - 3 hours with only slightly green water. Nothing different from previous operation where it ran for several months.
Can anyone give a possible reason for this rapid plugging.
I have done nothing different from past operation - nothing has changed.
However, something has changed, and I cannot dertermine what it might be. Thanks for any advice on this,
Rick
I then coated the filter leaves with the prescribed amount of de. The filter then plugged off in its first cycle - 3 hours with only slightly green water. Nothing different from previous operation where it ran for several months.
Can anyone give a possible reason for this rapid plugging.
I have done nothing different from past operation - nothing has changed.
However, something has changed, and I cannot dertermine what it might be. Thanks for any advice on this,
Rick