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studying for R-410A test

edow
edow Member Posts: 17
in THE MAIN WALL
i have 2 questions.



1. the federal clean air act calls for the phase-out of HCFC-22 in accordance with? is it just me or is that worded really funky, because i do not understand that



and 2. evaporating pressure is also known as?

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  • Techman
    Techman Member Posts: 2,143
    edited July 2011
    Protocol!

    -in accordence with the Montreal Protocol ? Kyeto Protocol ?  #2-boiling point of the freon? Suction press? Lo-side press?
  • edow
    edow Member Posts: 17
    more 410a questions

    i just had a DUH moment with the Montreal and Kyeto Protocol



    A mineral oil refrigerant system that is retrofitted with an HCFC refrigerant blend?

    thats the question. what the hell does that mean!?!?!?!?!
  • edow
    edow Member Posts: 17
    im going to drive you guys nuts with all my questions throughout the day

    DOT 4BA 400



    DOT i know is deparment of transportation

    i believe the 400 means the cyclinder is rated for 400 psi

    what does 4BA mean?
  • Techman
    Techman Member Posts: 2,143
    edited July 2011
    Think about it.

    Mineral oil is "used to be " in ACR now adays. So that's old stuff ! The HCFC class is generally a " blend",including  r22, is an" Interim refrig" ?????Might need the oil to be changed, depending!
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