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Thread: Earthwise Purge

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  1. #1

    Earthwise Purge

    What keeps the purge from sucking back through the exhaust solenoid during the regeneration cycle?

  2. #2
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    im not a pro., but if u dont understand the purge , what it does and how it works, let me suggest more reading., but to try to answer ur question,

    like u said , exhaust solenoid, solenoid is electrical the valve has a seal.,
    if seal is compromised , yes i am assuming that air will be pulling in and hopefully pulled back out with the purge.,

    ., if there is excessive purge, time to find leak.,
    isolate chiller.,
    adjust water lever in chiller., create a positive pressure.,
    tighten all flat gaskets., and if still excessive purge., well , lets see if the true pros add in.,.,

    MY QUESTION IS when does someone know it is time to change exhaust valve?
    no signature blast'em man blast'em
    !!!KILL THE TERRORIST!!!

  3. #3
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    Quote Originally Posted by Luke 123 View Post
    What keeps the purge from sucking back through the exhaust solenoid during the regeneration cycle?
    Well.....the exhaust solonoid itself will keep air from sucking through itself during regeneration because its deenergized. Unless the valve is bad and leaking.

    Quote Originally Posted by mlkwal1 View Post
    im not a pro., but if u dont understand the purge , what it does and how it works, let me suggest more reading., but to try to answer ur question,

    like u said , exhaust solenoid, solenoid is electrical the valve has a seal.,
    if seal is compromised , yes i am assuming that air will be pulling in and hopefully pulled back out with the purge.,

    ., if there is excessive purge, time to find leak.,
    isolate chiller.,
    adjust water lever in chiller., create a positive pressure.,
    tighten all flat gaskets., and if still excessive purge., well , lets see if the true pros add in.,.,

    MY QUESTION IS when does someone know it is time to change exhaust valve?
    I would suggest isolating the purge and doing a complete checkout of the purge before searching for a leak in the chiller.

  4. #4
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    When the purge is in a regeneration cycle, the exhaust solenoid is closed. The regeneration solenoid is open and the heater energizes to drive the refrigerant out of the carbon tank and into the evaporator.
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

  5. #5
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    thanks guys., always check purge first huh?
    would this be considered one of those ozzey area that need to be checked ., kinda like the eonomizer gaskets?


    and there u go Luke.,
    keep us posted.,
    no signature blast'em man blast'em
    !!!KILL THE TERRORIST!!!

  6. #6
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    Man... Trane is going to the end of the earth to prevent refrigerant loss... I wonder why...

  7. #7
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    At least the Earthwise still isn't as complicated as the old Carrier Prevents... what a menagerie... Maybe that's what put Carrier out of the low pres. business....

  8. #8
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    Quote Originally Posted by tcy612 View Post
    Man... Trane is going to the end of the earth to prevent refrigerant loss... I wonder why...
    It's all in the name of efficiency. I am not 100% convinced of the effectiveness of the earthwise design, though. The new carbon tank and extra solenoid seem to create more problems than anything.
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

  9. #9
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    Quote Originally Posted by mlkwal1 View Post
    thanks guys., always check purge first huh?
    would this be considered one of those ozzey area that need to be checked ., kinda like the eonomizer gaskets?


    and there u go Luke.,
    keep us posted.,
    The purge is the lowest common denominator. It's a whole lot cheaper and easier to fix than pressurizing the chiller and leak testing. There's a short list of things that I always check on every one before I go and pressurize the machine for a leak test.
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

  10. #10
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    Quote Originally Posted by Tech Rob View Post
    The purge is the lowest common denominator. It's a whole lot cheaper and easier to fix than pressurizing the chiller and leak testing. There's a short list of things that I always check on every one before I go and pressurize the machine for a leak test.
    I agree, Rob. The Purge is key to the chiller. I would always do a quick run test and inspection of it on all service calls I went on, even if the call was not purge or head pressure related. Sometimes I would find extra work. More than once I found "Max pump-out rate exceeded" that was a month or more old and still active (not ever reset).

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