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Thread: basic questions

  1. #1
    Join Date
    Jul 2009
    Posts
    58

    basic questions

    Helloha, I work at a small university, have an auto, diesel truck mechanic background and I have a universal cert. problem is, I don't know much about refridgeration and what I do know, i learned in autoshop and trade school (for trucks), and on this job. I want to learn more but opportunities are limited since breakdowns dont happen every day. Yes, I read books and yes I watch videos on youtube and such. that helps but i have some basic questions that I hope someone will take the time to answer.
    I do caps ever go partway bad? I know there is a tester for them but is there a way to test them without that tool.
    Can a compessor have a short and still run? I have one that runs loud and if I check for continuity from one of the leads going into it and the copper line connected to it, I get continuity.
    what would you do if you had a complaint about a loud compressor in a through wall heatpump?
    The same unit has a piercing valve on it, but there is no schrader in it. There seems to be a small hex for an allen key on top of it. will turning that open the valve so I can check pressure?
    I'll close with this, I watch/ listen to a lot of podcasts. Advance Auto has several on auto ac. They are pretty good butthey never show/ mention vacuming the system down before filling with refridgerant. Anyone know why orhave a theory?
    Thanks for helping out an old newb.

  2. #2
    Join Date
    Dec 2002
    Location
    SouthEast NC ICW & Piedmont Foothills
    Posts
    7,635
    How FREKKIN" many times can you ask the same question in the same forum?
    It`s better to be silent and thought the fool; than speak and remove all doubt.

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