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Thread: Jandy Filter Normal Pressure: Different this year than past?

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    Jandy Filter Normal Pressure: Different this year than past?

    Hello All!
    Pool opened yesterday, yay!!
    Quick question, the normal operating pressure in the past 3 seasons (how long we've had the pool) has been ~12-14. This year it seems to be about 19.
    The only thing difference I can think of is a new drain cap that was installed (i noticed the old one had a major crack in it prior to opening the pool). Good this be it? Anything else i should be looking at/considering?
    I don't think 19 is a bad operating pressure, i'm just so used to the standard being ~5-7psi lower.
    thanks!

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    duraleigh's Avatar
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    Re: Jandy Filter Normal Pressure: Different this year than p

    The first obvious question is have you cleaned it thoroughly? What type of filter is it?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Jandy Filter Normal Pressure: Different this year than p

    thanks Dave!
    it is a Jandy DE filter.
    the pool guy closes it and cleans it.
    he just opened it yesterday.

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    Re: Jandy Filter Normal Pressure: Different this year than p

    While 19 is not so bad, something is restricting the flow. If there have been no mechanical changes, about all it can be is an obstruction of some sort in the filter. At the very least, I would call the pool guy and see if he has an idea what that obstruction could be.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Jandy Filter Normal Pressure: Different this year than p

    Pool guy came and took apart filter.
    said everything is fine.

    only difference between this year and last is a new drain cap b/c i noticed a big crack in the old one.

    this has me puzzled. pressure at 19 is fine, just so different than every other year.

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    Richard320's Avatar
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    Re: Jandy Filter Normal Pressure: Different this year than p

    Just to be sure...the gauge returns to zero when the pump is off, correct?

    Also, my pressure varies depending on where I have the valves set. Make sure you're comparing the readings withe everything in the same position.
    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: Jandy Filter Normal Pressure: Different this year than p

    figured it out...it was the pressure gauge.
    replaced it with a $5 part and the reading is back to 12.
    glad it was something simple and not the grids or some kind of blockage!!!

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