Evaporator Drain tubes routing/location on carrier Reefer

Discussion in 'Refrigerated Trucking Forum' started by Dionicio0911, Aug 31, 2019.

  1. Dionicio0911

    Dionicio0911 Bobtail Member

    3
    5
    Jul 15, 2019
    0
    just bought a Reefer trailer with a carrier 2100A unit. Having problems with it getting to -5 degrees. I think the evaporator drain tubes are clogged up causing the evaporator to consonantly ice over. I’ve ran wire in the tubes no luck with that. I opened the front drain hole on the trailer floor and there is lots of ice . I’m guessing the water from defrost is leaking back into trailer. I have a load on it now. What is the best approach to seeing if the tubes are disconnected or clogged from beginning of the evaporator? Thanks
     
    KB3MMX Thanks this.
  2. lilillill

    lilillill Sarcasm... it's not just for breakfast

    4,958
    9,416
    Nov 7, 2007
    Possum Booger, Alabama
    0
    pull the tubes off where they connect to the evaporator box and let it run a defrost cycle. Wear gloves... the refrigerant lines by the battery side drain will be hot.
     
  3. lilillill

    lilillill Sarcasm... it's not just for breakfast

    4,958
    9,416
    Nov 7, 2007
    Possum Booger, Alabama
    0
    Also, what year is the box? Were you able to get it below -5 previously?
     
  4. Dionicio0911

    Dionicio0911 Bobtail Member

    3
    5
    Jul 15, 2019
    0
    It’s a 2011, and yeah got it down to -10 before we bought it. I’ll try disconnecting the tubes. I see water on wall draining down inside the engine compartment when it’s defrosting but it’s very little .
     
    KB3MMX Thanks this.
  5. Dionicio0911

    Dionicio0911 Bobtail Member

    3
    5
    Jul 15, 2019
    0
    It worked!!! I pulled the lines at the top out came a flood!! Top of the lines were clogged with leaves and junk. Probably from me trying to blow air into them to make sure they were clear pushed it all to the top and packed it! Thanks a bunch man!
     
    KB3MMX, Bean Jr. and lilillill Thank this.
  6. lilillill

    lilillill Sarcasm... it's not just for breakfast

    4,958
    9,416
    Nov 7, 2007
    Possum Booger, Alabama
    0
    Clean the hoses out and make sure there are nipples on the ends. The evaporator will suck warm air up the hoses if there aren't.

    The nipples will also prevent mud daubers from building nests in the tubes.
     
    KB3MMX Thanks this.
  • Draft saved Draft deleted