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Thread: Hayward Perflex DE EC65 no suction

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    Hayward Perflex DE EC65 no suction

    Hi there,
    I'm new to the forum and a fairly new pool owner...this thing's been kicking my butt for the past 4 years now. We just switched out our very old DE filter for an EC65. Thing is, the filter has suction as it's filling up with water but, once it fills, you can see the suction decrease drastically to almost nothing. We tore it completely apart to see if there was any blockages, nothing. We turned on the pump to make sure it was pulling water in and it's all good there. Seems like it gets airlocked or something once it fills up. Any suggestions?
    20' x 40' Gunnite Inground Pool
    Hayward EC65 Filter
    Aquabot T2 Turbo - "Mr Clean"

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    Mod Squad JohnT's Avatar
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    Re: Hayward Perflex DE EC65 no suction

    Welcome to TFP!

    What is the pressure gauge reading? Is there water coming out the returns?
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

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    Isaac-1's Avatar
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    Re: Hayward Perflex DE EC65 no suction

    Something is WRONG here the filter should be on the pressure side of the pump.

    It should go like this :

    Pool
    skimmer/drain
    pump basket/pump
    filter
    heater and or SWG if you have one
    return line to the pool
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
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    Mod Squad jblizzle's Avatar
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    Re: Hayward Perflex DE EC65 no suction

    Not sure if there is a picture I can not see on my phone leading to the equipment order response.

    I was going to ask if you are opening the air vent on the top of the filter to let the pump fill it with water. Also you do have a return to the pool open right?

    Posted with Tapatalk ... sorry if I sound short ... hate typing on phone
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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    Re: Hayward Perflex DE EC65 no suction

    Thanks all for the quick responses. The filter is after the pump. I only put that in to eliminate the pump as the issue. It's sucking water in like it should. The pressure builds up to between 15-20 lbs. But, once the pressure stabilizes the suction just dies off. There is water coming out of the returns but, not with the pressure that is should have. I do leave the air vent open until it spits out a stream of water. Then, once i see that the suction has dwindled down, if I open the air vent, it has suction and it would suck air into the filter, even if the pump was running. Seems like it's building up an air lock somewhere. We've torn it apart, cleaned the fingers and cannot see any clogs anywhere.

    20' x 40' gunnite ig
    Hayward Perflex E65
    Aquabot T2 Turbo robotic cleaner
    20' x 40' Gunnite Inground Pool
    Hayward EC65 Filter
    Aquabot T2 Turbo - "Mr Clean"

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    Mod Squad jblizzle's Avatar
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    Re: Hayward Perflex DE EC65 no suction

    Opening the air vent on the filter can not suck air in unless you have something plumbed incorrectly.

    Posted with Tapatalk ... sorry if I sound short ... hate typing on phone
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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    Isaac-1's Avatar
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    Re: Hayward Perflex DE EC65 no suction

    When you added the DE were you careful in your measurement? too much DE could clog the filter
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
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    ~Remember TFP counts on your donations to keep this site ad free~

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    Re: Hayward Perflex DE EC65 no suction

    Yes, I was very careful to add just 6lbs of DE. My brother in law is a plumber so this evening, we took the filter apart completely and put the empty housing back together. We ran the pump to see if it would hold suction and pressure. It does not, so part of it could be the fingers but, somewhere, somehow, this filter is losing suction. Not sure what could be causing that. I don't see any leaks anywhere. Puzzled.
    20' x 40' Gunnite Inground Pool
    Hayward EC65 Filter
    Aquabot T2 Turbo - "Mr Clean"

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    Isaac-1's Avatar
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    Re: Hayward Perflex DE EC65 no suction

    Well I don't see why you keep talking about suction, it should never see suction, only pressure, and a pressure leak is easy to spot, it is where the water is. What size is your old pump, An EC65 is likely to need around a 1HP? Have you downloaded the installation instructions from Hayward? When you installed the pump did you maybe put the duckbill one way valve into the base of the filter backwards?
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
    I use and endorse TFtestKits TF-100 from http://tftestkits.net
    ~Remember TFP counts on your donations to keep this site ad free~

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    Mod Squad jblizzle's Avatar
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    Re: Hayward Perflex DE EC65 no suction

    I agree it should not be suction ... should be pressure.

    Post up a few pictures of your pad setup and maybe we can see something amiss.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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    Re: Hayward Perflex DE EC65 no suction

    I'm sorry, I'm using the wrong terminology. I'm saying suction because there's no water being pulled into the filter like it should be. I just said the heck with it and bought a new EC75A. Should be here in a few days. We'll see if that sucker does the trick. I'm fed up with this 65.
    20' x 40' Gunnite Inground Pool
    Hayward EC65 Filter
    Aquabot T2 Turbo - "Mr Clean"

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    Mod Squad jblizzle's Avatar
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    Re: Hayward Perflex DE EC65 no suction

    Again water should not be pulled into the filter... it is pushed.

    Hopefully your new filter will help, but not if it is a plumbing issue.

    Posted with Tapatalk ... sorry if I sound short ... hate typing on phone
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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