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  1. #1
    Join Date
    Jun 2004
    Posts
    12

    Question

    I changed the evaporator and I used my electronic leak detector to make shore that the new one was not leaking. But what is a good why to check the condensor for leak because there are a lot of trees by the unit and my detector go off some time out in the open. I am going to go back by the house tomorrow to recheck the evaporator. the unit was going down in two to three days.

  2. #2
    Join Date
    Mar 2004
    Location
    Indiana
    Posts
    665
    Get a couple cheap plastic tarps and wrap the condenser. Then go in from the top with the sniffer.
    Check your coil for oily or dirty spots. I have never seen a leaky Trane condenser coil, but chrck the copper lines in the unit. I've had several that the copper has rubbed and caused leaks. This seems to be an ongoing problem around here.

  3. #3
    Join Date
    Jun 2004
    Location
    Maryland's Eastern Shore
    Posts
    892
    Evacuate the system and take it 250 psig with nitrogen and let it sit... most effective leak detector I've found... If it holds, no worry, if it drops than wrap the condensor and go at it...

  4. #4
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,743
    And never be afraid to break out BIG BLUE.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  5. #5
    Join Date
    Jun 2003
    Location
    Florida
    Posts
    9,548
    Originally posted by wingnut3
    Get a couple cheap plastic tarps and wrap the condenser. Then go in from the top with the sniffer.
    Check your coil for oily or dirty spots. I have never seen a leaky Trane condenser coil, but chrck the copper lines in the unit. I've had several that the copper has rubbed and caused leaks. This seems to be an ongoing problem around here.
    I agree with wrapping the condenser....but why go in from the top? Freon's heavier than air and will sit down the bottom.
    If everything was always done "by the book"....the book would never change.

  6. #6
    Join Date
    Oct 2003
    Location
    Florida's space coast
    Posts
    2,538
    I found a leak in a two year old Trane condenser coil just last week.

    It was in the bottom circuit at the copper to aluminum junction which was wrapped with cork tape.

    Tek Mate leak detecter got me in the neighborhood and after peeling back the cork tape Big Blue did the rest.

    Waiting on the warranty coil to be delivered to the shop.
    We've been doing so much,for so long,with so little, that now we can do almost anything, with nothing at all.

  7. #7
    Join Date
    Nov 2003
    Location
    South Carolina
    Posts
    1,167
    Pressurize it...wrap it...sniff it..then big blue it..works every time.

  8. #8
    Join Date
    Jan 2005
    Location
    Central Fl
    Posts
    49
    Originally posted by a\c don
    I found a leak in a two year old Trane condenser coil just last week.

    It was in the bottom circuit at the copper to aluminum junction which was wrapped with cork tape.


    Tek Mate leak detecter got me in the neighborhood and after peeling back the cork tape Big Blue did the rest.

    Waiting on the warranty coil to be delivered to the shop.
    I have found a couple of these recently myself. We've had a few at my shop. 410A systems. It's always (so far at least) on the bottom circuit in the aluminum a few inches past the transition from copper. I have been hoping it won't be an epidemic, but I'm not feeling too good after hearing others are finding the same thing. We install ~200/month.

  9. #9
    Senior Tech Guest
    Originally posted by gatorguy
    Originally posted by a\c don
    I found a leak in a two year old Trane condenser coil just last week.

    It was in the bottom circuit at the copper to aluminum junction which was wrapped with cork tape.


    Tek Mate leak detecter got me in the neighborhood and after peeling back the cork tape Big Blue did the rest.

    Waiting on the warranty coil to be delivered to the shop.
    I have found a couple of these recently myself. We've had a few at my shop. 410A systems. It's always (so far at least) on the bottom circuit in the aluminum a few inches past the transition from copper. I have been hoping it won't be an epidemic, but I'm not feeling too good after hearing others are finding the same thing. We install ~200/month.
    200 per month?!?! Must work for McDonalds HVAC...over 150 Billion sold...

  10. #10
    Join Date
    Jan 2005
    Location
    Central Fl
    Posts
    49
    We are a fairly large company (130 employees) that does a LOT of new construction for retirement communities in central Florida. The main community is around 50,000 and half grown. It is basically it's own city. They have their own TV station, radio station, newspaper, and bank, just to name a few. They have a sorry website, it is http://www.thevillages.com .

  11. #11
    Join Date
    Aug 2004
    Location
    North Richland Hills, Texas
    Posts
    14,914
    I have only ever found 3 or so of them leaking. Trane makes a repair kit that works real well. You still have to recover the refrigerant, but it saves you from having to totally strip the unit down for a coil changeout.

    If you get the repair kit, follow the instructions exactly and you won't have any problems. Try to do it without reading the instructions and you will regret it.
    If more government is the answer, then it's a really stupid question.

  12. #12
    Join Date
    Oct 2003
    Location
    Florida's space coast
    Posts
    2,538
    Originally posted by gatorguy
    We are a fairly large company (130 employees) that does a LOT of new construction for retirement communities in central Florida. The main community is around 50,000 and half grown. It is basically it's own city. They have their own TV station, radio station, newspaper, and bank, just to name a few. They have a sorry website, it is http://www.thevillages.com .
    I'm not very far from you.

    Work mostly from Viera/Suntree in Brevard down to Indian river county line and beaches from Patrick AFB to Sebastian inlet.
    We've been doing so much,for so long,with so little, that now we can do almost anything, with nothing at all.

  13. #13
    Join Date
    Jan 2005
    Location
    Central Fl
    Posts
    49
    I have used the repair kit on R-22 systems with sucess. The 410A coils that I have found leaking recently have all been around 12-18 months old. We have been replacing the coil rather than repairing it considering its age.

    I'm not too sure what I think about the repair kit on the high side of a 410A system. Mark, have you used the repair kit on 410A and had enough time pass to feel confident it will hold up?

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