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Thread: Stenner 85MHP17 output

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    Stenner 85MHP17 output

    Hi all, I just hooked up my Stenner 85MHP17 and tested with water. The pump does dispense water in what does appear to be a measured amount. However, I was under the impression it would be a pressurized stream. Am I off base?

    Also, I set up to run at night while the pool pump is running. This is accomplished via two Intermatic timers. Can anyone give me a ballpark on timer setting to start with on a 30k gallon pool? Perhaps I'll start at 10 and adjust timer and/or pump output from there.

    Thanks in advance.
    Anthony Pool, 35k gal plaster, DE (1.5hp Ultraflow), Rainbow 320, Dolphin Diagnostic 2001 (Advantage) & Polaris, Retrofitted Anthony mod #20 120v Niche light with Pentair 5G & adapter ring, 70's build / recoped and plastered 1.5 years ago

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    JasonLion's Avatar
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    Re: Stenner 85MHP17 output

    Those pumps move liquid very slowly. If there is resistance they are quite capable of building up some pressure, but an open pipe just kind of dribbles out.

    Are you pumping chlorine or acid?
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Re: Stenner 85MHP17 output

    Jason, thanks for the reply. This is for chlorine. I finally found a supplier in my area that I believe I'll be happy with.

    Chlorine is 12.5% ("Available" Chlorine is 11.9% according to label)

    BTW, the test was pushing water through an injector tip with the check valve and duckbill.
    Anthony Pool, 35k gal plaster, DE (1.5hp Ultraflow), Rainbow 320, Dolphin Diagnostic 2001 (Advantage) & Polaris, Retrofitted Anthony mod #20 120v Niche light with Pentair 5G & adapter ring, 70's build / recoped and plastered 1.5 years ago

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    Re: Stenner 85MHP17 output

    Your 85MHP17 should have an adjustable head, correct? Mine does, and with it set to 10 using a number 2 tube, I get 1.75 ounces of 12.5% chlorine per minute output.
    If you have the same setup you can use those numbers or measure yours out and see what your output is. Then go to the Pool Calculator and input your numbers to get your required amount of chlorine needed. Divide that by your output, the result is how many minutes you need to run it and end up with the required FC for your CYA level.

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    Re: Stenner 85MHP17 output

    Awesome. I'm not sure which tube I have so I will measure the output.

    Thanks!
    Anthony Pool, 35k gal plaster, DE (1.5hp Ultraflow), Rainbow 320, Dolphin Diagnostic 2001 (Advantage) & Polaris, Retrofitted Anthony mod #20 120v Niche light with Pentair 5G & adapter ring, 70's build / recoped and plastered 1.5 years ago

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    Re: Stenner 85MHP17 output

    Verify that you have an adjustable head as well. That'll make a big difference on your output.

    Just to point out to those that are not sure of the difference.

    Adjustable head on left pump (dial and numbers). Non adjustable on right pump:


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    Re: Stenner 85MHP17 output

    Yes, the pump is adjustable.....
    Anthony Pool, 35k gal plaster, DE (1.5hp Ultraflow), Rainbow 320, Dolphin Diagnostic 2001 (Advantage) & Polaris, Retrofitted Anthony mod #20 120v Niche light with Pentair 5G & adapter ring, 70's build / recoped and plastered 1.5 years ago

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    Re: Stenner 85MHP17 output

    BTW, can I remount the head so the in/out nipples face in the opposite direction....on the right side as opposed to the left?
    Anthony Pool, 35k gal plaster, DE (1.5hp Ultraflow), Rainbow 320, Dolphin Diagnostic 2001 (Advantage) & Polaris, Retrofitted Anthony mod #20 120v Niche light with Pentair 5G & adapter ring, 70's build / recoped and plastered 1.5 years ago

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    Mod Squad Bama Rambler's Avatar
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    Re: Stenner 85MHP17 output

    You should be able to rotate the pump tube housing so that the ports are in the opposite direction.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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