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  1. #1
    Join Date
    Jul 2009
    Location
    Columbia, MD
    Posts
    4,216

    Evaporator coil leak repair

    Found a circuit flat on charge yesterday and repaired it today.

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    found leak at 50psi nitrogen and bubbles to verify
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    better picture of whole coil
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    repaired leak with #0 tip
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    also found this fitting to leak and replaced
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    the coil all back together
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    not a bad level for r-410a thats been open to atmosphere for who knows how long

    i also replaced the drier with a correct size one.

  2. #2
    Join Date
    Jun 2009
    Location
    Upstate SC
    Posts
    1,439
    Nice repair. Is that 1/2" or 3/8" going to the vacuum pump?

  3. #3
    Join Date
    Jul 2009
    Location
    Columbia, MD
    Posts
    4,216
    2 of the appion 1/2" hoses

  4. #4
    Join Date
    Nov 2006
    Location
    Athens, Ohio
    Posts
    1,888
    Nice work. It feels good after a repair like that.

  5. #5
    Join Date
    Jun 2002
    Location
    south jersey
    Posts
    1,105
    Boy you really took us through step by step. I felt like I was assisting you. Nice job. What do you set your regs on the oxy/acc rig fot that repair?
    You need to put the phone down and get back to work!

  6. #6
    Join Date
    Jun 2009
    Location
    Upstate SC
    Posts
    1,439
    Have you noticed the micron reading inaccurately that close to the pump?

    Sent from my ERIS using Tapatalk 2

  7. #7
    Join Date
    Sep 2012
    Location
    Central Florida
    Posts
    885
    Quote Originally Posted by gravity View Post
    not a bad level for r-410a thats been open to atmosphere for who knows how long

    i also replaced the drier with a correct size one.
    We actually had a rep from Emerson down to the shop not to long ago tell us that it was impossible to get all the moisture out of POE oil even with a deep vacuum. Of course he also told us that the compressors that where being install on the line should only be open to atmospere for five minutes at most. Of course this is all in side of a factory setting.

  8. #8
    Join Date
    Dec 2011
    Location
    Lower, DE
    Posts
    28
    Nice job..... looks good.

  9. #9
    Join Date
    Jul 2009
    Location
    Columbia, MD
    Posts
    4,216
    Quote Originally Posted by jdblack View Post
    Have you noticed the micron reading inaccurately that close to the pump?

    Sent from my ERIS using Tapatalk 2
    it will show lower then what the system is actually at. after it has been running for a while i will close the core tool that has the micron gauge on it. then im readings furthest from the pump.

  10. #10
    Join Date
    Jul 2009
    Location
    Columbia, MD
    Posts
    4,216
    Quote Originally Posted by jnsrose View Post
    Boy you really took us through step by step. I felt like I was assisting you. Nice job. What do you set your regs on the oxy/acc rig fot that repair?
    it depends on the tip.

    i used like 5 act and 10oxy with the 0 tip

    and then when i use my #15 rosebud i will use about 8-10act and 10-12oxy

    the tip is important for the repair. if i used my rosebud on the coil i would have burnt everything

  11. #11
    Join Date
    Sep 2012
    Location
    Central Florida
    Posts
    885
    Quote Originally Posted by gravity View Post
    it depends on the tip.

    i used like 5 act and 10oxy with the 0 tip

    and then when i use my #15 rosebud i will use about 8-10act and 10-12oxy

    the tip is important for the repair. if i used my rosebud on the coil i would have burnt everything
    Seen this in action. Most of the pipers where I work love their rosebuds. Find a leak in a unit during test, they will burn the hell out of everything around it while fixing it. Really POs everyone down the line. I normally get stuck fixing pipe insulation. I have been trying to fix the leaks myself but I don't have the skills of people doing that type of work 24/7 for years.

  12. #12
    Join Date
    Nov 2011
    Location
    Georgia/ Texas
    Posts
    345
    Good job man, ive got a few trane package units around here that ive had do do the same thing, one in the same spot
    (((PEACE IS THAT BRIEF MOMENT IN HISTORY WHERE EVERYBODY STANDS AROUND RELOADING)))

  13. #13
    Join Date
    Sep 2012
    Location
    NW Louisiana
    Posts
    159
    Quote Originally Posted by Elfshadow View Post
    We actually had a rep from Emerson down to the shop not to long ago tell us that it was impossible to get all the moisture out of POE oil even with a deep vacuum. Of course he also told us that the compressors that where being install on the line should only be open to atmospere for five minutes at most. Of course this is all in side of a factory setting.
    The EMERSON rep was 100% right. It is impossible to remove moisture from POE oil. I know, we have tried in the lab. The oil must be changed. The minimal open time is 100% correct too. POE will wick moisture from the air at an alarming rate. It is extremely hydroscopic (sp). This is why the compressors are shipped with plugs and about 5 psi of dry air.

    Knew it was a Trane, red compressor!

    CT

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