How to backwash a diatomaceous earth pool filter

How to backwash a diatomaceous earth pool filter

A diatomaceous earth filter should be backwashed at least every three weeks. Proper backwash procedure is as follows:

Turn pump off. Put valve in backwash mode. (If you have a push/pull valve, backwash is in the up position.) If you have a flexible backwash hose attached, unroll and direct to the desired area. Turn pump on and allow to run for at least 30 seconds, or until water is clear. Turn pump off. Return valve to filter mode or rinse mode. (If you have push/pull valve, filter mode is in the down position.) Turn pump on and allow to run for 15 seconds. Repeat these steps at least three times, and more if water still is not clear. Don’t forget to recharge your filter with the proper amount of diatomaceous earth. For your convenience, I have listed quantities of diatomaceous earth which should be added.

24 square feet filter, use 3 lbs. diatomaceous earth
36 square feet filter, use 5 lbs. diatomaceous earth
48 square feet filter, use 6 lbs. diatomaceous earth
60 square feet filter, use 7 lbs. diatomaceous earth
72 square feet filter, use 8 lbs. diatomaceous earth

Backwashing regularly will extend the life of your filter components. But even still, every six months, filter should be opened up and disassembled for a more thorough clean. Do not rely only on reading changes on filter pressure gauge. While cleaning grids, check carefully for torn fabric, broken ribs, and cracked necks. Also check that the standpipe o-ring is still in place. Make sure there are no cracks in filter manifold. Replace any damaged parts to avoid having diatomaceous earth returning to your pool. At times, you may run into problems re-assembling filter assembly.

Whether you’re searching for Fort Worth pool service or Fort Worth pool repair, getting all of the information that you need will give you a great advantage in keeping a clean pool.