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Thread: Filter pressure issue

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    Filter pressure issue

    Hi guys
    New here.

    I have a DT filter thats a bit old but still works fine to my knowledge. I've been having a pump issue as well but I don't believe its causing my filter issue.

    If I run the pump my filter pressure goes to 55-60psi. Then if I backwash, while I am backwashing it goes out at 15-20psi. THen once I backwash and turn the filter back on normally it works at about 35 psi with good flow for about 30 minutes and then it shoots back up with bad flow to the 55-60psi range.

    Is it possible that there is an obstruction in the outlet? I can't figure out how this would happen....

    Any ideas?
    Frustrated!

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
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    Re: Filter pressure issue

    Welcome to TFP!!!

    It is actually not even really possible for a pool pump to get the pressure that high even if the return pipe was completely blocked. I am thinking your gauge is just bad and should be replaced. Does it go to 0 when the pump is off?

    There could still be a problem, but hard to troubleshoot it ... if indeed the gauge is providing faulty information.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Re: Filter pressure issue

    I'll check it out when i get home and update.

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    Richard320's Avatar
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    Re: Filter pressure issue

    My first guess would be the gauge.

    Second guess is that you have something like this going on:





    Not my pictures...stolen from
    extremely-dirty-d-e-filter-help-t60455.html
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Re: Filter pressure issue

    Ok so here are photos of the stages of my pressure. Anybody have any ideas?
    Attached Images Attached Images

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    Mod Squad jblizzle's Avatar
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    Re: Filter pressure issue

    I would spend the < $15 to replace it just so I did not have to look at that thing

    I think it is off as all those pressures just seem overly high ... 35psi is possible but not typical ... 55-60psi is just not possible.

    @Richard ... that filter was unbelievable.
    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!

  7. Back To Top    #7

    Re: Filter pressure issue

    I've cleaned my filter many times so it's clean on in the inside. It doesn't look like those horrendous filters above. I will try replacing out the gauge. Im having pump motor problems and I'm awaiting a new pump motor. Maybe it's the motor then after it's pumping for a while it has something to do with.
    Pump makes noise but it's not capacitor or the bearings as I replaced both. I think the shaft is bent as there were rub marks on one side of the shaft that goes between the copper wound wires.

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