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  1. 9 superheat & subcooling scenarios

    Quote Originally Posted by nike123 View Post
    • LOW CHARGE = High superheat. Low suction pressure, indoor TD, subcooling, head pressure & compressor current draw.
    • OVER CHARGE = Low superheat. Normal indoor TD. High suction pressure, subcooling, head pressure & compressor current draw.
    • LOW INDOOR AIR FLOW = Low superheat & suction pressure. Low to normal head pressure. High indoor TD. High to normal subcooling. Not much effect on current draw.
    • MILD LOW OUTDOOR AIR FLOW = Low superheat & subcooling. High suction
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  2. Extending torque wrench correctly

  3. What is the purpose of having the capillary tube soldered to the suction line.

  4. Refrigerant circuit animation video

    Here is nice explanation:

    Updated 28-09-2013 at 08:10 AM by nike123

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  5. Major differences between R22 and R410 kompressors

    Quote Originally Posted by nike123 View Post
    There are three distinct design differences between and R-22 and R-410A compressor:
    • Different Oil: Because mineral oil, normally used in R-22 compressors, is not miscible with HFC refrigerants such as R-410A, Copeland uses a synthetic Polyol Ester Oil (POE) in R-410A approved compressors.
    • Reduced Compressor Displacement: A pound of R-410A has approximately the same heat carrying capacity relationship to R-22 as R-22 has to R-12, therefore, the compressor displacement has to be reduced
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