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  1. #1
    Join Date
    Feb 2009
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    Tallahassee, FL
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    6,007

    cottonwood in northflorida

    2009 amana 2 stage. It was interesting how unit ran before and after.

    Was cooling fine customer would never have thought twice had I not showed him the coil!

    One interesting thing to note was the indoor txv was letting the unit equalize between cycles like the hard shutoff wasn't working. Once coil was clean it held itback.
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  2. #2
    Join Date
    Sep 2012
    Location
    Central Florida
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    880
    Quote Originally Posted by SBKold View Post
    2009 amana 2 stage. It was interesting how unit ran before and after.

    Was cooling fine customer would never have thought twice had I not showed him the coil!

    One interesting thing to note was the indoor txv was letting the unit equalize between cycles like the hard shutoff wasn't working. Once coil was clean it held itback.
    What was the head pressure like? Did you both hooking up gauges??

  3. #3
    Join Date
    Feb 2009
    Location
    Tallahassee, FL
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    6,007
    Here are the readings before 88-90oda

    Cond sat 107 in 1st with 14 SC and 110 in 2 with 17 SC.
    Ll temp didn't change much.

    After cond sat 99 in 1st and 8 SC.
    102 in 2nd and 9 SC.

    Superheat stayed constant but EVAP sat temp lowered 1.5degree.

  4. #4
    Join Date
    Dec 2008
    Location
    Buffalo NY
    Posts
    3,078
    We get cottonwood bad here. I see this all the time. Good job cleaning it out.


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  5. #5
    Join Date
    Feb 2009
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    Tallahassee, FL
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    Quote Originally Posted by qwerty hvac View Post
    We get cottonwood bad here. I see this all the time. Good job cleaning it out.


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    Do you hit it with a brush attachment on a shop vac first before wetting it? It was cool it came right off like a natural air filter.

  6. #6
    Join Date
    Dec 2008
    Location
    Buffalo NY
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    Quote Originally Posted by SBKold View Post
    Do you hit it with a brush attachment on a shop vac first before wetting it? It was cool it came right off like a natural air filter.
    That is what I try to do on most of the condensers if they are real bad. Except Trane spine fin. I vac them and wash really good.


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  7. #7
    Join Date
    Jul 2007
    Location
    Beautiful, Philadelphia, the City of Brotherly Love!
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    1,089
    i would think this stuff is flammable, we used to burn drier lint before trying to wet it. Carbon washes off so much easier.
    “You don't get paid for the hour. You get paid for the value you bring to the hour.” Jim Rohn

  8. #8
    Join Date
    Sep 2012
    Location
    Central Florida
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    880
    Quote Originally Posted by qwerty hvac View Post
    That is what I try to do on most of the condensers if they are real bad. Except Trane spine fin. I vac them and wash really good.


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    You reminded me of this.


    Ill post this in the pro section.....

    http://hvac-talk.com/vbb/showthread....1#post15847931

  9. #9
    Join Date
    Dec 2008
    Location
    Buffalo NY
    Posts
    3,078
    Yes I've seen that video. I have done that a few times on really clogged ones.


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