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How to Backwash D.E. Filters For Swimming Pools

Mostly for Hayward Models EC30, 40, 50, 60, 65, 75
with bump handles

             

  • Turn pump off.
  • Open backwash valve.
  • Bump handle slowly 15 times.
  • Turn pump on and run it for 2 minutes.
  • Turn pump off.
  • Bump handle slowly 15 times.
  • Turn pump on for 1 minute.
  • Turn pump off.
  • Close backwash valve tightly.
  • Turn pump on.
  • Add D.E. to the skimmer located closest to pump.
  • For Hayward EC-40 / EC-50 Filters use (3) 1 LB coffee cans of DE
  • For Hayward EC-65 / EC-75 Filters use (5) 1 LB coffee cans of DE
  • Add D.E. to skimmers SLOWLY. Don't CLOG them !
  • Check pool water level after backwashing - add more water if necessary !

The amount of DE you actually need is an arguable point amongst pool guys.  Some say add more and backwash less, others say add less and backwash more frequently.  We like to side with the "add less and backwash more" group.  One thing almost all agree on, is that the manufacturer's instructions that come with most DE filters always recommend putting in WAY TOO MUCH DE.  If you put too much in, you risk clogging the filter, straining your pump and significantly reducing your circulatory pressure in the pool.


Mostly for Hayward Models DE2400, DE3600, DE4800, DE600
(but other brands are similar)
with multiport valves

Hayward Micro Clear DE Filters for In Ground Pools 

  • Turn pump off.
  • Turn multiport valve to backwash position.
  • Open backwash gate valve ( if any ).
  • Turn pump on and run it for 2 minutes.
  • Turn pump off.
  • Turn multiport to filter or rinse rinse position.
  • Turn pump on and run it for 1 minute.
  • Turn pump off.
  • Turn multiport valve to backwash position.
  • Turn pump on and run it for 2 minutes.
  • Turn pump off.
  • Turn multiport valve to filter or rinse position.
  • Turn pump on and run it for 1 minute.
  • Turn pump off.
  • Turn multiport valve to filter position.
  • Close backwash gate valve (if any) & turn pump on.
  • Add D.E. to the skimmer located closest to pump.
  • For Hayward DE2400 Filters use (2) 1 LB coffee cans of DE
  • For Hayward DE3600 Filters use (3) 1 LB coffee cans of DE
  • For Hayward DE4800 Filters use (4) 1 LB coffee cans of DE
  • For Hayward DE6000 Filters use (4) 1 LB coffee cans of DE
  • Add D.E. to skimmers SLOWLY. Don't CLOG them !
  • Check pool water level after backwashing - add more water if necessary !

The amount of DE you actually need is an arguable point amongst pool guys.  Some say add more and backwash less, others say add less and backwash more frequently.  We like to side with the "add less and backwash more" group.  One thing almost all agree on, is that the manufacturer's instructions that come with most DE filters always recommend putting in WAY TOO MUCH DE.  If you put too much in, you risk clogging the filter, straining your pump and significantly reducing your circulatory pressure in the pool.

See our Swimming Pool Filters Now

 

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