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    What you just explained and how you explained it,...

    What you just explained and how you explained it, made perfect sense. Thanks for the reply.
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    I will use the 90-30-1 rule and finish charging...

    I will use the 90-30-1 rule and finish charging this unit tomorrow. Thanks for the help.
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    When I started this thread I was wanting to know...

    When I started this thread I was wanting to know Rule of Thumb for charging. I like to check what I'm reading against what guys are telling me in the field. My book says for a commercial system with...
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    Thanks. Yes I went through school and I'm EPA 608...

    Thanks. Yes I went through school and I'm EPA 608 universal certified. I only want to do things right. I read my books and always end up going with what my books say. There are good techs and really...
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    But the superheat and pressure isn't correct ...

    But the superheat and pressure isn't correct


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    It's down to temp by the superheat and pressure...

    It's down to temp by the superheat and pressure isn't where it's suppose to be.


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    Box temp is -20 Sent from my iPhone using...

    Box temp is -20


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    That's why I'm on this forum. I'm trying to learn...

    That's why I'm on this forum. I'm trying to learn as much as I can. Can you apply for pro status if you aren't currently working for a company in this trade?


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    The ambient is 70 degrees. The condenser split is...

    The ambient is 70 degrees. The condenser split is 25 degrees. Low temp unit. 95 degrees on a PT chart is 203 for R408. So I'm going to charge to proper head pressure on Monday because it's a little...
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    I've talked to quite a few good techs but I've...

    I've talked to quite a few good techs but I've talked to quite a few bad techs. It's amazing how much conflicting info there is. For someone that is concerned with doing things right, it's difficult....
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    Wade through conflicting information

    Being a new tech you will have to wade through conflicting information. And there is a lot out there. Depending on the tech you talk to and the books you read you can have 3 to 4 answers for the same...
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    Yeah this has a reciever. The receiver is a 75lb...

    Yeah this has a reciever. The receiver is a 75lb unit. This is a low temp 36ft freezer with 3 evaporators and matched condensor. Each evap has its own TXV valve. It also has a suction accumulator...
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    Ok thanks. I appreciate it. I am currently...

    Ok thanks. I appreciate it. I am currently looking into comfort flow.


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    This is a new system being charged for the first...

    This is a new system being charged for the first time. It has txv valves. It has a head master.


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    System charging question

    I'm charging a commercial system that is running R408. The ambient is 70 degrees. I cleared the sight glass of bubbles but the high side pressure isn't where it should be according to the P/T Chart....
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    But it's not just reading the manual. It's...

    But it's not just reading the manual. It's actually taking the time to understand what your reading. I grew up with a dad that taught me about basic electrical and basic mechanics. Plus I loved to...
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    There is a company where I live that is always...

    There is a company where I live that is always hiring apprentices. You are supervised at all times. Basically you fetch tools and help the tech your riding with. I have no problem with both. Because...
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    I've made some mistakes along the way but I try...

    I've made some mistakes along the way but I try to learn from them. I realize I still have a lot to learn still. I talked to a tech that has been in the business for 30 years and he told me he still...
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    Field experience is where you learn.

    School gets you some basic knowledge of HVAC/R. It does not give you any field experience. Once you go to school you think you can do what you were taught but you can't. The basic knowledge is great...
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    I agree with you 100%. I have called some really...

    I agree with you 100%. I have called some really good techs that I know for help. I know their time is valuable and so it their knowledge. When they take the time to answer my phone call I listen to...
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    The fieldpiece Sman3 digital gauge.

    All I can say is this gauge is awesome. I've never had problems with it. I keep it calibrated and have been told to flush it out with nitrogen from time to time. So far I love this gauge. It's easy...
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    I've read a lot of good information on this...

    I've read a lot of good information on this forum. I will continue to ask questions and use this as a source of information.
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    As a manager of a family owned grocery store I've...

    As a manager of a family owned grocery store I've dealt with plenty of hvac/r techs. I've got to know quite a few really good techs but along the way I've dealt with plenty of hacks. I only want to...
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    Good books for new techs?

    I'm a new tech that is wanting to concentrate on commercial refrigeration and residential heating and cooling. Install and repair. What are some good books to keep handy? Has anyone read the HVACR...
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    It does. But I like to calculate those manually...

    It does. But I like to calculate those manually sometimes just to check the gauges accuracy. It's been accurate every time.


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