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  1. #1
    Join Date
    Feb 2012
    Location
    Lynn, Mass
    Posts
    134

    repairing coil on bottom of condenser

    i have a 20something ton trane unit that had a bad compressor, cause was a hole in the condenser coil from vibrating against the side of the unit. that led to the oil all pi$$ing out and running dry. so, problem solved, replace condenser, patch coil, all set! right? WRONG! since this hole is on the bottom loop of the condenser ALL the remaining oil in the condenser is now sitting at that hole. so, brazing over it is dam near impossible. HELP!! How do i get this hole clean enough to accept the silver solder?

  2. #2
    Join Date
    Apr 2012
    Location
    Paper Street Soap Company
    Posts
    2,304
    You may have to isolate the condensor and use a flush.

    I mean literally disconnect discharge and liquid line and run nitrogen throught it and maybe R410A flush kit.

    Clean the area where you're repairing the weld and it should stick

  3. #3
    Join Date
    Feb 2012
    Location
    Lynn, Mass
    Posts
    134
    I'll give that a shot.... i cleaned the hell outta it. but once i heated it up, the oil got lighter and flowed down to the hole. hopefully it'll work, i legit just need a drip of solder on ther and i cant get it to work.

  4. #4
    Join Date
    Sep 2007
    Location
    NH
    Posts
    1,157
    Hook up your vacuum pump and just crack the valve so it's barley pulling a vacuum.

  5. #5
    Join Date
    Dec 2003
    Location
    Citrus County, Florida
    Posts
    1,576
    Is that an alum spine finned coil? there s a Trane repair kit. I think the part number is KIT0146.
    Doug

  6. #6
    Join Date
    Jan 2010
    Location
    new orleans
    Posts
    231
    Quote Originally Posted by Gunslinger View Post
    Is that an alum spine finned coil? there s a Trane repair kit. I think the part number is KIT0146.
    It's a 20 ton. Pull the coil flip it then flush is what I normally do when oil is a big issue

  7. #7
    Join Date
    Feb 2012
    Location
    Lynn, Mass
    Posts
    134
    All set, the ends of the coil rubbed the side of the unit until they popped open. both stages had leaks... major SH!t show. brazed em all up, leak tested and recharged. Sweeter than Bambi. pics below.





  8. #8
    Join Date
    Feb 2012
    Location
    Lynn, Mass
    Posts
    134




  9. #9
    Join Date
    Dec 2003
    Location
    Citrus County, Florida
    Posts
    1,576
    Nice job. When I get those, I wrap some stranded copper wire around it first. It helps keep solder from falling in the hole.
    Doug

  10. #10
    Join Date
    Feb 2012
    Location
    Lynn, Mass
    Posts
    134
    Quote Originally Posted by Gunslinger View Post
    Nice job. When I get those, I wrap some stranded copper wire around it first. It helps keep solder from falling in the hole.

    good advice, i'll try that. "There's always next time..... well except once, but then it wont matter anyway" lol

  11. #11
    Join Date
    Feb 2012
    Location
    Lynn, Mass
    Posts
    134
    I also ran a couple lengths of rubber insulation down the inside of the compartment where it was rubbing. when i put it back together it was about 2" away from the wall, wierd. it may have been jammed in there, expansion and contraction could have "walked" the coil closer to the wall.... ehhh either way, JOB DONE!!! untill next time. Thank all you gentlemen for your advice!

  12. #12
    Join Date
    Oct 2011
    Location
    Springfield, Missouri
    Posts
    18
    Nice repair I have 9 of those units on a steakhouse in town when I started to work on them only half of them worked at all and it was the biggest mess I had ever seen. But I have repaired coils on all of them what a nightmare. But invest in that line flush it becomes your best friend and foam doesent last long for a anti vibration patch to keep them from future failure you just have to get all of the unit back in square and re enforce the corners so the unit doesent shift again and start to rub the coils but rubber blocks or urethane pads last longer and dampen the vibration.

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