Many people think that a D.E. and a sand filter can be backwashed the same way. This is a popular misconception since these are two completely different filters and each with a different process of backwashing. In order to have proper filtration, all filters need proper maintenance.

Follow these directions to enjoy a clean filter and a clean pool in no time courtesy of your friends here at Texas Pool Sharks:

1.     Filter is ready for backwashing when the pressure on the filter tank gauge goes up 8-10 pounds above normal setting.

2.     At this point, turn off all time clocks on all pumps.

3.     Rotate Dial Valve to “Backwash Position”.

4.     Extend the flexible 2″ backwash hose to wash out area, the grass, If no backwash hosing is supplied, water will then be back washed into pee trap.

5.     Turn on the pool timer and allow water to run out backwash line.

6.     Allow water to run until it comes out clear out of the tank. This will take approximately 3-5 minutes.

7.     Turn off power at time clock, then rotate filter valve to Filter position and On power at time clock once more.

8.     Allow filter to run approximately 4-6 minutes.

9.     Repeat steps 2,3,5,6.

10. After final back wash, turn off power and rotate valve to rinse position. Turn on power and allow filter to rinse for ONE minute.

11. After final rinse, cut off filter at time clock. Rotate valve to Filter position and turn on filter power again. Roll up the flexible back wash hose to original position.

12. Back washing is complete. Make a mental note of the beginning pressure on the filter gauge.

Your sand filter should be back washed once a week, or more often if pressure raises above normal setting (10lbs. over). If you think that your sand filter will wear out from this process, think again. The sand does not lose its angular shape, it simply becomes polluted with skin oils, hair or sunscreen chemicals that will be removed once the filter has had its proper maintenance.

Usually spring and fall will cause the pressure to go up with all the blooms and shedding of trees and shrubs.  After a normal backwash the pressure on your sand filter should drop down 8-10 pounds.  The sand in your filter system should last approximately 5 to 7 years before needing to be changed out.

If you should have any more questions, or if you get stuck trying to backwash your filter feel free to contact us over the phone.