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Thread: AWC Programming using pumps and float switches

  1. #1
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    AWC Programming using pumps and float switches

    I'm not sure this is possible or not, but I'm curious.

    I have two float switches, one high and one low hooked into a BOB, that I've installed for setting up an AWC. I'm curious is it possible to program apex to do the following:

    1. Turn return pump off
    2. Turn Waste water pump on at specific time until low limit switch is hit
    3. Then turn on Fresh salt water pump until high limit switch is hit
    4. Turn return pump back on.

    My thought was this, I currently have two pumps on two outlets, one is called WC_FRESH, the other WC_WASTE. If there is a better way to do this please let me know! Thank you!

    COR20:
    Fallback ON
    Set ONIf FeedA 010 Then 1If Output V-Feed = ON Then 1
    If Time 15:55 to 16:15 Then OFF


    WC_WASTE:
    Fallback OFF
    Set OFF
    If Time 16:00 to 16:05 Then ON
    If LOW CLOSED Then OFF

    WC_FRESH:
    Fallback OFFSet OFF
    If Time 16:06 to 16:11 Then ON
    If HIGH CLOSED Then OFF

    VO_FAILSAFE:
    Fallback OFF
    Set OFF
    If Cond > 36.5 Then OFF
    If Cond < 33.5 Then OFF
    If HIGH OPEN Then OFF
    IF LOW CLOSED Then OFF

  2. #2
    Frequent Contributor zombie's Avatar
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    It requires some changes. All of this assumes that the high switch is your emergency high level, ATO is your normal level switch, and all three floats open when up. If that is not the case please provide more information.

    COR20:
    Fallback ON
    Set ONIf FeedA 010 Then 1
    If Output V-Feed = ON Then 1
    If Time 15:55 to 16:09 Then OFF

    WC_WASTE:
    Fallback OFF
    Set OFF
    If Time 16:00 to 16:05 Then ON
    If LOW CLOSED Then OFF
    If Output VOfailsafe = ON Then OFF
    Min Time 000:30 Then OFF

    WC_FRESH:
    Fallback OFFSet OFF
    If Time 16:06 to 16:11 Then ON
    If ATO OPEN Then OFF
    If Output VOfailsafe = ON Then OFF
    Min Time 000:30 Then OFF

    VO_FAILSAFE:
    Fallback OFF
    Set OFF
    If Cond > 36.5 Then ON
    If Cond < 33.5 Then ON
    If HIGH OPEN Then ON
    IF LOW CLOSED Then ON
    If Time 16:00 to 16:11 Then OFF
    Defer 001:00 Then ON
    Defer 015:00 Then OFF



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  3. #3
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    Thanks zombie. Originally I was going to set it up so the high switch and the ATO switch were the same, but due to the confined space of my return chamber I wasn't able to fit all three floats at the same level. So what I did was turn off the return pump, wait for the water to settle then set the high float at that water level, and low flow about 1/2" below it. Does that make sense?

    Let me know your thoughts.

  4. #4
    Frequent Contributor zombie's Avatar
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    Quote Originally Posted by djbetterly View Post
    Thanks zombie. Originally I was going to set it up so the high switch and the ATO switch were the same, but due to the confined space of my return chamber I wasn't able to fit all three floats at the same level. So what I did was turn off the return pump, wait for the water to settle then set the high float at that water level, and low flow about 1/2" below it. Does that make sense?

    Let me know your thoughts.
    With that arrangement what I showed above wont work. You need this instead. Because of the way you arranged it, there is no reliable way to determine if water level is too high for the water change to be successful without intentionally overfilling a small amount, so the high switch failsafe has to be removed.


    COR20:
    Fallback ON
    Set ONIf FeedA 010 Then 1
    If Output V-Feed = ON Then 1
    If Time 15:55 to 16:12 Then OFF

    WC_WASTE:
    Fallback OFF
    Set OFF
    If Time 16:00 to 16:05 Then ON
    If LOW CLOSED Then OFF
    If Output VOfailsafe = ON Then OFF
    Min Time 000:30 Then OFF

    WC_FRESH:
    Fallback OFFSet OFF
    If Time 16:06 to 16:11 Then ON
    If HIGH OPEN Then OFF
    If Output VOfailsafe = ON Then OFF
    Min Time 000:30 Then OFF

    VO_FAILSAFE:
    Fallback OFF
    Set OFF
    If Cond > 36.5 Then ON
    If Cond < 33.5 Then ON
    IF LOW CLOSED Then ON
    If Time 16:00 to 15:55 Then OFF
    Defer 001:00 Then ON
    Defer 015:00 Then OFF


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  5. #5
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    Hmmm....you’re making me question my setup now

    Would you advise I make another attempt at trying to arrange the switches so the high switch and ATO switch match with a low switch just below it?

  6. #6
    Frequent Contributor zombie's Avatar
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    Actually just thought of a way to add a failsafe for high level. I am assuming here your Low AWC switch is above your normal level ATO here.

    HighFailsafe
    Set OFF
    If Low OPEN Then ON
    If Time 15:55 to 16:12 Then OFF
    Defer 20:00 Then OFF

    Add

    If Output HighFailsafe = ON Then OFF

    To the drain and fill.

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  7. #7
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    Got it...I’ll test it VERY thoroughly

    Thank you for your help

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