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Thread: What are backwash steps with a DE filter and Ecostar pump?

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    What are backwash steps with a DE filter and Ecostar pump?

    I replaced all my old equipment with new Hayward equipment a week ago. The pool is being broken in now as it was replastered. The water is green with algae and I assume it is clogging the new DE filter as pressure is around 20psi and the flow is nearly non-existent. What are the steps to backwash?

    The equipment I have are hayward 4028 DE filter with multi-port valve, and Hayward Ecostar VS pump.

    I read somewhere the pump shouldn't be more than 2000 rpm during backflush. When I shut the pump and turn it back on, it goes through the priming startup at 3400 rpm. I have to shut the pump in order to switch the valve to backwash.

    Does anyone have experience with these and can outline the exact steps I need to follow?
    Also, how much DE do I need to put through the skimmer once done backwashing?

    Thanks!
    2nd Time Pool Owner - 1983 In Ground, New Krystal Krete (5/2013), 30' long x 17' wide x 4' at shallow and 7' at deep, 20,000 Gallon, Aquarite Salt, Hayward Ecostar with hayward 4820 DE Filter.

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    frustratedpoolmom's Avatar
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    Re: What are backwash steps with a DE filter and Ecostar pum

    The label on the side of the filter tells you how much DE to add, you usually add 80% of that original amount after each backwash.

    You turn off the pump, set the valve to backwash, backwash for a couple minutes till sightglass runs clear, turn pump off, set to rinse, 30 seconds on rinse outta do, off, set to filter, pump on, add the DE. I'm not familiar with the rpm issue so I have nothing to add there... sorry!
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

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    Re: What are backwash steps with a DE filter and Ecostar pum

    I just don't know if the 3400 rpm at prime will be an issue when backwashing. I don't want to damage anything.
    2nd Time Pool Owner - 1983 In Ground, New Krystal Krete (5/2013), 30' long x 17' wide x 4' at shallow and 7' at deep, 20,000 Gallon, Aquarite Salt, Hayward Ecostar with hayward 4820 DE Filter.

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    frustratedpoolmom's Avatar
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    May 2007
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    Re: What are backwash steps with a DE filter and Ecostar pum

    I wish I had an answer for that I'm sorry.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

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    harleysilo's Avatar
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    Mar 2012
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    Re: What are backwash steps with a DE filter and Ecostar pum

    Hayward customer support is great, call them!
    I think this is the number (908) 355-7995
    18'x43' Sport Pool
    19,000 Gallons Vinyl Liner 3'-3.5'-4'
    SWCG and D.E. Filter
    Test Kits - Pool Calculator - Chlorine/CYA Chart - Pool School

    Secret Weapon for Pool Chemistry Testing

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