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  1. #1
    Join Date
    Apr 2010
    Posts
    93

    Look what a fellow tech at my company just did... Punctured coil.

    Not our most experienced technician. Ah well... We all have to learn some way I suppose. On my way (hour drive) to go bail him out and fix it, should be arriving around 5pm pacific time. Just when I finished my last appt on this mild June day.

  2. #2
    Join Date
    Apr 2010
    Posts
    93
    Hmm not sure if the attachment worked... Here's the pic:


  3. #3
    Join Date
    Jan 2010
    Posts
    6,382
    Quote Originally Posted by ComfortablyNumb View Post
    Hmm not sure if the attachment worked... Here's the pic:

    So what's the rest of the story ?

  4. #4
    Join Date
    Apr 2010
    Posts
    93
    Quote Originally Posted by Joehvac25 View Post
    I'm pretty green on the a/c, when I get to hang out with a good tech I love to pick there brain any chance I get. That don't happen very often though. Sometimes when we get embarrassed we get defensive that's a problem some people have to get over. For me I sit on here and read a/c stuff as much as I can to help me out.
    Picking peoples brains, doing your own research, not being embarrassed to ask questions/call tech support/TSA's when in doubt is what will give you the most knowledge. I can understand getting embarrassed/defensive, and to a certain degree its expected from anybody that takes pride in what they do. Nobody knows everything, and even for the BEST, it's a never ending learning experience.

    Quote Originally Posted by GOVHVAC View Post
    Been there done that. **** happens. I found a unit that was missing a screw and thought I would replace but apparently used to long of a screw and pierced the coil.
    It's possible that a screw was never meant to be there... Last company I worked for, we'd just set a 40 ton RTU, and one of our guys goes "man, it really looks like there should be a screw there..." And before any of us could say anything.... PSSSSSSSHHHHHHHH. Woops.

    Quote Originally Posted by VTP99 View Post
    So what's the rest of the story ?
    I posted earlier in the thread... But long story short, arrived to the unit at about 5pm, spent some time putting the client at ease. Peeled back/cut away some fins, replaced and brazed in small section of tubing (hole was pretty damn big, and wasn't 100% sure the bottom wasn't punctured as well), checked for leaks, vacuum and held 400 microns, charged back to factory + line length, start/test, unit was running and looking beautifully like it never happened. Client was fine... Made it home well before dark after the hour drive. Boss gave the tech a verbal kick in the balls the next morning, but now its water under the bridge.

  5. #5
    Join Date
    Jan 2010
    Posts
    6,382
    Quote Originally Posted by ComfortablyNumb View Post



    I posted earlier in the thread... But long story short, arrived to the unit at about 5pm, spent some time putting the client at ease. Peeled back/cut away some fins, replaced and brazed in small section of tubing (hole was pretty damn big, and wasn't 100% sure the bottom wasn't punctured as well), checked for leaks, vacuum and held 400 microns, charged back to factory + line length, start/test, unit was running and looking beautifully like it never happened. Client was fine... Made it home well before dark after the hour drive. Boss gave the tech a verbal kick in the balls the next morning, but now its water under the bridge.

    Nice job keep up the good work.

  6. #6
    Join Date
    Aug 2009
    Location
    Regina,SK
    Posts
    153
    I never get upset over those types of calls, as I was young and stupid once. Actually I still am

    But now I know how to fix my eff ups. I love helping fellow techs and always will because I know what it`s like to be in over my head. The guys I help are always attentive and learn from their mistakes and that`s all I can ask for.

  7. #7
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,777

  8. #8
    Join Date
    Feb 2012
    Location
    GTA, ON
    Posts
    1,273
    And that is why you do not use a coil as target baskstop

  9. #9
    Join Date
    Dec 2007
    Location
    Afton, VA / Khorat, Thailand
    Posts
    2,469
    OOps, my hand slipped.....
    Tough times don't last...Tough people do.

    Midnight Sun Astrophotography

  10. #10
    Join Date
    Apr 2010
    Posts
    93
    Man this client is pissed. Tech feels terrible. I'm happy the micron gauge is telling me its alllllmost time to go home.

    About a year ago one of our techs forgot he left his fieldpiece multimeter on top of a condenser, went inside to call for cooling, comes back out to find that one of his test leads had wrapped around the blade - the momentum made the detachable tip turn into a projectile - and in a one in a million shot, pierced one of the veins in the middle of the coil. I wish I had a pic of that, aftermath. Damn.

  11. #11
    Join Date
    Apr 2012
    Location
    Paper Street Soap Company
    Posts
    2,304
    That can be fixed.

    Carrier RTUs are known for rubbing through the TOP of the coil.

    Pry back the fins and build up some 15%.

  12. #12
    Join Date
    Feb 2012
    Location
    Toronto Canada
    Posts
    1,090
    Quote Originally Posted by Six View Post
    That can be fixed.

    Carrier RTUs are known for rubbing through the TOP of the coil.

    Pry back the fins and build up some 15%.
    That can be fixed with some 15% ( Have you seen the price of that stuff?!?!?) Just sucks if its a new piece of equipment and the customers knows about it. If i was paying for new equimpment Id be telling them to get me a new one. Lucky this customer doesn't sound like a piece of work like me

  13. #13
    Join Date
    May 2012
    Location
    Des Moines, IA
    Posts
    56
    Quote Originally Posted by Six View Post
    That can be fixed.

    Carrier RTUs are known for rubbing through the TOP of the coil.

    Pry back the fins and build up some 15%.
    i just had one of those last week! i was going crazy trying to figure out how the pinhole leak got there. thanks for that tidbit. it put my mind at ease

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