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Thread: Jandy Pool Filter, Model CL340

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    morzh's Avatar
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    Jandy Pool Filter, Model CL340

    Hi,

    Still learning my new in-ground pool I got with a new house.

    It has a filter, the model CL340 by Jandy.

    Now, questions:

    1. The filter does not seem to have any large outlet for backwash/waste. Is this even intended, and if needed, what do I do?
    2. It has a small spigot which I used when needed to dump some water after a large rainfall. Is this it?
    3. No handle to switch modes. or haven't I noticed?
    4. On top there is that thing that looks like a flashlight with a window that is somewhat tarnished. It says "Clear" on one 9 o'clock side and "Dirty" on 3 o'clock. There isn't anything that I can possibly use as an indicator. How does it work?
    5. Does it have a place to measure the pressure? Is the pressure even measured in above-ground pools, and if yes, why is there no gauge here?
    6. How do I clean the thing? And when do I know I need to?

    Anything about this one I need to know?

    Mike

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    Mod Squad jblizzle's Avatar
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    Re: Jandy Pool Filter, Model CL340

    1) That is a cartridge filter. You do not backwash them. You could add a 3-way valve between the pump and filter if you wanted a waste option more than #2
    2) That is an option to dump to waste, see #1
    3) ??? What modes? On the filter? Again, cartridge filters do not have modes
    4) Picture? Sounds like a pressure gauge. Ignore the clean and dirty markings. We recommend cleaning when the pressure rises 20-25% over the clean pressure
    5) See #4, there should be a gauge. You sure there is not a sticker over the face of it for shipping?
    6) See #4, You open the filter, take the cartridge out, spray it clean: Pool School - Maintenance and Cleaning of Pool Filters

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    morzh's Avatar
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    Re: Jandy Pool Filter, Model CL340

    Jason

    Thanks for replying, here are some photos of that do-heckey from #4.






    - - - Updated - - -

  4. Back To Top    #4
    Mod Squad jblizzle's Avatar
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    Re: Jandy Pool Filter, Model CL340

    Weird. There should be a pressure gauge in that window. And the back might be the air release valve. You may have to buy that whole piece and not an aftermarket gauge.
    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
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  5. Back To Top    #5
    morzh's Avatar
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    Re: Jandy Pool Filter, Model CL340

    Yes the knob in the back is pressure release.

    http://www.zodiacpoolsystems.com/~/m.../H0291800.ashx

    This is the manual. They show exact same thing except they call it pressure gauge/air release assembly.
    Maybe there was a PG inside, maybe it crumbled and the owner removed it.

    The guy who opened the pool last month is the same guy who built this pool 10 years ago, he did not say anything about this thing when asked, except he did use it to release air.


    PS. Went to look by PN, found this

    Gauge/Air Release Assembly




    bought on Amazon, free shipping.

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