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  1. #1
    Join Date
    Jul 2007
    Location
    South Florida
    Posts
    153

    They can't seem to get it to work just right

    Got a call from one of my customers, pizza joint, that he was having issues with one of his other stores. It is about 45 miles away. He didn't think I would travel. Long story short, walk-in cooling keeps having issues. They have worked on it 5 or 6 times over past 6 months. I told him I would take care of it for him. Called store, they say unit froze to compressor. I have them turn off breaker to condenser to deice. Get there evap & condenser dirty, clean both. Start up unit, bubbles in sight glass, evap temp 30, suction line 30 ( no superheat ). First thought dirty txv bulb or txv open to far. Pull off bulb and found this. Yes, a new txv makes unit work great now.
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    From My Evo 4G
    Too Few Pro Tech's & Too Many Parts Changer's.

  2. #2
    Join Date
    Feb 2006
    Location
    USA
    Posts
    4,381
    How does that even happen?

  3. #3
    Join Date
    Feb 2007
    Location
    Central NJ
    Posts
    530
    somebody punched that bulb in the face!
    You have to pay your due's before you pay the rent!

  4. #4
    Join Date
    May 2000
    Location
    Monmouth Junction-NJ-USA
    Posts
    6,029
    Quote Originally Posted by hvac wiz 79 View Post
    How does that even happen?
    Ice will cause that. Seen it a few times.
    If you really know how it works, you have an execellent chance of fixin' er up!

    Tomorrow is promised to no one...

  5. #5
    Join Date
    Oct 2010
    Location
    Baton Rouge, LA
    Posts
    1,114
    Looks to me like they cranked the sucker down on an elbow?
    If you're too "open" minded, your brains will fall out.
    Artificial intelligence is no match for natural stupidity.

  6. #6
    Join Date
    Jul 2007
    Location
    South Florida
    Posts
    153
    Not sure what happened, there was no insulation on bulb and bulb strap was not pinching bulb. When I turned on condenser, it took less than a minute for suction line to freeze, bubbles in sight glass, very easy to diagnose txv problem.

    From My Evo 4G
    Too Few Pro Tech's & Too Many Parts Changer's.

  7. #7
    Join Date
    Dec 2007
    Location
    Afton, VA / Khorat, Thailand
    Posts
    2,469
    Sunk by ice...just like the Titanic...
    Tough times don't last...Tough people do.

    Midnight Sun Astrophotography

  8. #8
    Join Date
    Dec 2005
    Location
    Cincinnati, Oh
    Posts
    5,186
    Quote Originally Posted by rayr View Post
    Ice will cause that. Seen it a few times.
    Now thats a thought!


    Storing that one away, next time I see a frozen/leaking lineset. Check the bulb for damage, because it's gonna suck if you replace the coil, and while replacing it find out the TXV you don't have is bad.
    "Better tell the sandman to stay away, because we're gonna be workin on this one all night."

    "Dude, you need more than 2 wires to a condenser to run a 2 stage heatpump."

    "Just get it done son."

    Dad adjusted

  9. #9
    Join Date
    Aug 2008
    Location
    Bel Air MD
    Posts
    35
    Ive seen people try to squeeze a bulb on a TXV that was "stuck open" but that doesnt even have tool marks on it.

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