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  1. #1
    Join Date
    Jul 2004
    Posts
    167

    draft beer chiller

    We have a local bar account that talked us into changing out the glycol in there chiller system. Supposedly there old hvac company did it as a maintenance every two years. We do a lot of refrigeration but usually leave the chillers to the beer companies so don't have alot of experience with glycol percentages. We drained the well and refilled it with one gal glycol and 4 gallons water. Now they say there beer is not as cold as before we touched it. We went back today and added more glycol to bring it up to a 3 to 1 mixture. The glycol was at 35 degrees and the themostat was set at 29 degrees. The refrigeration circuit seams to be okay. The plate was not frozen, 35 pound suction pressure

  2. #2
    Join Date
    Jun 2007
    Location
    Williamsport, PA
    Posts
    165
    Check to make sure the pump is working, the glycol may not be getting to the beer lines. Check the walk-in temp where the beer is stored. The walk-in must keep the beer temp in the keg below 38.

  3. #3
    Join Date
    Jan 2008
    Location
    Lake Worth, FL
    Posts
    111
    What kind of glycol did you use. Different manuafacters use different types. And some are premixed and some are not. Check with the equipment mfr.

  4. #4
    Join Date
    Nov 2008
    Location
    Altamont, IL
    Posts
    376

    Thumbs up

    How is the flow. I just recently had a system with two circuits, two pumps, the flow was lousy. I cut the lines just below the tap dispenser and had a helper blow compressed air into the lines at the pumps. You wouldn't believe the snot that blew out. We blew them both directions and now it fows a full stream and the beer is colder than it ever was.
    In GOD We Trust

  5. #5
    Join Date
    Nov 2005
    Posts
    575
    The trunk lines will over time get ice in them, perhaps during the shut-down time the ice melted. It will take many days to build up again.

    Another angle, trunk lines will droop from there own weight. these droops are traps for water or melted ice, all this extra water will put a larger load on the unit.

    35* to warm, pump is not the problem if you where not pumping the temp would be colder and shutting off(no load)

  6. #6
    Join Date
    Mar 2011
    Location
    Texas
    Posts
    27
    The glycol is only to keep the water from freezing so I don't think it's a mixture problem. What freon is the systems on.

  7. #7
    Join Date
    Jan 2010
    Posts
    6,238
    Quote Originally Posted by levi View Post
    We have a local bar account that talked us into changing out the glycol in there chiller system. Supposedly there old hvac company did it as a maintenance every two years. We do a lot of refrigeration but usually leave the chillers to the beer companies so don't have alot of experience with glycol percentages. We drained the well and refilled it with one gal glycol and 4 gallons water. Now they say there beer is not as cold as before we touched it. We went back today and added more glycol to bring it up to a 3 to 1 mixture. The glycol was at 35 degrees and the themostat was set at 29 degrees. The refrigeration circuit seams to be okay. The plate was not frozen, 35 pound suction pressure
    Get the glycol temp. down. How long are the trunk lines ?

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