DE in pool and what to look for

Pool Filters Fundamentals.com

Providing you with the fundamentals on pool filters.

DE getting into pool: What to look for

There are numerous ways in which dirt or DE may get through the filter and back into the pool.

Some of the more common problems of dirt or DE getting back into the pool are: the filter itself may be dirty and cause dirt and debris to get into the pool; the manifold may have chips or cracks; DE and dirt may escape into the pool through openings in the manifold; or the grids, laterals or cartridges may be damaged.

Another reason for dirt getting back into the pool is that the jets may be clogged. You may be alerted to this problem if water is not flowing through the jets properly. This could be due to sand or other particles in other sections of the unit that are clogging the jets. The unit may need to be taken apart and cleaned in this instance.

Also, when you have a new pool, the sand filter may clog with plaster dust, which can block the sand bed and inhibit the filter cycle and cause the plaster dust to get into the pool.

When a backwash valve is difficult to turn, you need to perform the teardown process and lubricate the components before leaks happen. Inspect the grids, cartridges, laterals and manifolds thoroughly when you break down a filter for cleaning.

The greatest cause of leaks, wherein dirt or DE can get back into the pool, is due to improperly reassembling the filter components after cleaning. Therefore, make sure you follow instructions carefully and are very thorough in reassembling your unit after backwashing and cleaning. Remember you will save yourself much time and prevent much frustration if you do so.

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