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Thread: Stenner comment from one builder?

  1. Back To Top    #1

    Join Date
    Oct 2010
    Cypress, TX

    Question Stenner comment from one builder?

    Hi all,

    Getting our bids in Cypress, TX and we're asking the builders if they can put in a Stenner chlorine pump. One builder said the following "That particular chlorine pump can be problematic if not monitored correctly. We are preparing to renovate a clients’ pool that wound up with EXTREME acid water conditions due to his use of a Stenner pump. If not monitored, they can lead to serious plaster, tile and coping damage."

    Is this hogwash? It sounds to me like the owner just didn't balance his pH regularly.

    13,500 gal with sheer descents, pebblesheen, travertine coping, fire bowls, Pentair all around including remote and automation, chlorinator, borates, raised 7x7 spa in Cypress, TX.

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: Stenner comment from one builder?

    Well clearly they're wrong if the Stenner was being used to add chlorine since it would not make acidic water . But this is the first I recall reading of anyone having a runaway Stenner pump. The only way that could actually happen is if the timer for the pump went bad. And even then if you're testing as often as you should it should've been found within a day or two.
    Jason, TFP Moderator
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  3. Back To Top    #3
    JoyfulNoise's Avatar
    Join Date
    May 2015
    Tucson, AZ

    Re: Stenner comment from one builder?

    Well, you can use a Stenner pump for both acid dosing applications and chlorine dosing. There is always the chance that the Stenner pump could suffer from some unintended glitch (like anything electronic) and/or the mechanical timer not close properly which would lead to overdosing. Most often the error is human-error from not adjusting the pump run times properly. So if it's an acid dosing pump, I could easily see an unattended pool getting walloped with too much acid and having the pH drop.

    But your gut-feeling is correct - the solution is proper and consistent pool water testing. If you stay on top of your testing, then issues like that are less likely to happen or become problems.
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

  4. Back To Top    #4

    Join Date
    Jun 2015
    Phoenix, AZ

    Re: Stenner comment from one builder?

    In our build, the Hayward control center has a 'fail-safe' mechanism that prevents the Stenner from running continuously.
    Once it detects that the acid (or in your case, Chlorine) is being fed continuously for more than a pre-determined period of time, it shuts it off and sends an email to me - even if the feed was legitimate.
    2015 build (link)| 16.5 K gal | Salt Water | IG rect | 35'x16' | 568 sf | 105 ft peri | depth 3'-5' | PV3 in-floor | 2 Venturi skimmers | MDX+SDX drains | T-CELL-15 SWG | Hayward Ecostar VS pump | Hayward 7220 DE Filter | Aqua Cal Icebreaker Heat / Cool pump SQ166 | Hayward Sense & Dispense PH Controller| Omnilogic | Pebble Sheen Blue Surf | Ultra UV | Stenner acid pump | Coverstar Automatic | TF-100

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