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  1. #27
    Join Date
    Dec 2012
    Location
    columbus, OH
    Posts
    2,072
    Ive worked around steel products for a good many years where localizing a weld was of importance to insure proper tensile strength. The same could be said for brazing. If a leak meant big money or death, flow temps would be important although the number means nothing to anyone without heat chalk.

  2. #28
    Join Date
    Jun 2013
    Location
    NORTHERN
    Posts
    991
    weeeeeell

    the same silver shop teacher in earlier tangents
    did show ud how to pick off 1200 to 1400 by the color of the dull to more orange metals and 1700 for inlay-ed glass melting...

    then in class of 16-18 year old kids

    too, 5 of 9 failed out of the total17 bought and sold brand, had only simple braized joint failures-
    for my company alone; and 3 distributors went through the same from 1993-2010 with that brand-

    maybe if they had the chalk, or could see the bright orange required-

    oh well:
    only as good as your last tech/QC person to make the OEM's name , anyways
    ... however, much work still needs to be done.
    CLOSED LOOP newer ratings are listed, but in numerical EER's Closed- is posted below OPEN LOOP EER's:

    http://www.energystar.gov/productfin...r=0&lastpage=1

  3. #29
    Join Date
    Aug 2011
    Posts
    1,251
    there is too many job in this country dont even need to be exist,most of time is easy goverment job!they set up all kind of test and exam,so they can ask u stupid question like that dont even concern how u work in the field,and collect the fee!

  4. #30
    Join Date
    Jan 2007
    Location
    Stongsville Oh
    Posts
    909
    I think the idea is that we retain about 70% of what we learn. We are taught 30% more than we need. Hope fully we will retain what we need and not the melting point/flow point of brazing rod.
    ckartson
    I didn't write the book I just read it!

  5. #31
    Join Date
    Mar 2007
    Location
    Myrtle Beach, SC
    Posts
    2,919
    If the question did not specify 15%, I would say "it depends on the alloy." There are a LOT of silver brazing alloys available, all with different flow temperatures.
    Remember, Air Conditioning begins with AIR.

  6. #32
    Join Date
    Oct 2002
    Posts
    1,358
    Too many Texas License hollders have never even held a torch, but they could answer the question (open book).

    These new license holders are allowed to work is a HOs house, yet have never experienced oil dripping, suction line and trying to braze everything back togetrher.

    State is granting license to book smart applicants, yet ignoring all practical application.

    My beef is the Contractors Exams asking rediculious questions about board member terms yet Manual J is no longer tested.

  7. #33
    Join Date
    Aug 2012
    Posts
    2,686
    D: all of the above.
    My name is TooCoolforschool and I am a chronic over charger.

  8. #34
    Join Date
    Feb 2013
    Location
    Cary NC
    Posts
    641
    Saw a "tempilstick" online it you wanted to hold something else in your hand while brazing. I guess the tip of this thing melts at 1400 degrees.

  9. #35
    Join Date
    Jul 2009
    Location
    new york
    Posts
    666
    Not melt but flow. That's the trick question. There is flow and there is melt. Now I see my nate is useless.

  10. #36
    Join Date
    Sep 2005
    Location
    Atlanta GA area
    Posts
    21,434
    A person who is a good test-taker... may or may not be a good tech.
    And a lousy test-taker might be a GREAT tech, or a poor one.

    Mechanical understanding is something one learns from years of working with their hands, along with a natural knack for mechanical things... Same with electrical things. IMO there is really no way to test this... one just has to have the knack and experience.

    Licensing, in reality, is not about ability... it is about limiting competition and govt collecting fees (mostly govt fees). Nothing more. There are as many hacks with licenses as without.
    GA-HVAC-Tech

    Quality work at a fair price with excellent customer service!

    Romans Ch's 5-6-7-8

    2 Chronicles 7:14

  11. #37
    Join Date
    Jul 2009
    Location
    new york
    Posts
    666
    I guess but its a tool when being hired when it comes down to two or three people the person with nate or rses is most likely going to get the job. Is it really going to hurt to have the nate or rses cert?. The ad company's promote nate so it's in everyone head that all techs need them.

  12. #38
    Join Date
    Sep 2005
    Location
    Atlanta GA area
    Posts
    21,434
    Quote Originally Posted by bwd111 View Post
    I guess but its a tool when being hired when it comes down to two or three people the person with nate or rses is most likely going to get the job. Is it really going to hurt to have the nate or rses cert?. The ad company's promote nate so it's in everyone head that all techs need them.
    I tend to agree with this... While NATE does require more than a hack understanding... it is mostly for show to folks that really do not know the difference (most HO's).

    I know a few guys that got NATE for only that reason... to impress their customers.
    GA-HVAC-Tech

    Quality work at a fair price with excellent customer service!

    Romans Ch's 5-6-7-8

    2 Chronicles 7:14

  13. #39
    Join Date
    Jul 2009
    Location
    new york
    Posts
    666
    That is very true. It's all about how to rub it in other people faces. Just cause people have a drivers Lin doesn't mean they can drive

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