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Thread: 22 to 407a

  1. #14
    Join Date
    Sep 2008
    Location
    Vancouver , BC
    Posts
    265
    Quote Originally Posted by crackertech View Post
    I would put some poe in with the min oil before hand just to get the system cleaned up.
    That's a good idea. Only took a day for the oil sight glasses to look pretty dark.

    And JP you weren't kidding about the leaks. I finished my part of the job last friday as I had to be at another job the following week and that Friday night they got some high temp alarms and they didn't call us till 8am the next day and apparantly down over 200 lbs. apparantly a ball valve was leaking under a case on the existing piping. I don't know the full details as I haven't talked with the techs that were there. Not sure if any other issues have occurred yet either.

  2. #15
    Join Date
    Jan 2006
    Location
    DFW Metroplex
    Posts
    4,910
    Demand cooling liquid injection solenoid valves are very susceptible to leaks after converting to R407A - so much so, that we change 'em as a precautionary measure.
    "The problem is the average person isnt tuned in to lifelong learning, or going to seminars and so forth. If the information is not on television, and its not in the movies they watch, and its not in the few books that they buy, they dont get it" - Jack Canfield

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