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  1. #1
    Join Date
    Feb 2009
    Location
    New Orleans
    Posts
    40

    Oil in new condenser coil?

    I was replacing the condenser coil on a 5 ton Bard unit (one of the vertical package units) and when I popped the plastic plugs off, a bit of oil dribbled out of the condenser. I have replaced quite a few of these coils and hadn't seen that before.

    A nitrogen purge indicated that there was just that initial dribble but I did a R11 flush on the coil just to make sure

    Any idea what kind of oil that was? Was this just a manufacturing oversite? I know oil is used when they "press" these things together.

    Makes me paranoid about the ones I didn't flush. It probably wasn't enough to be a issue but...

  2. #2
    Join Date
    Dec 2009
    Posts
    147
    I find this alot in Ontario doing start ups for a local company
    It has never caused me any problems, I just make sure I purge and evacuate properly

  3. #3
    Join Date
    Mar 2003
    Location
    Cochrane, AB
    Posts
    597
    They push a ball bearing through the tubes to expand them into the tube sheets with hydraulic pressure. Don't worry about it.

  4. #4
    Join Date
    Dec 2009
    Posts
    147
    Quote Originally Posted by mspanky View Post
    They push a ball bearing through the tubes to expand them into the tube sheets with hydraulic pressure. Don't worry about it.
    I had no idea!
    interesting though, thanks for sharing

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