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Thread: DOA scroll

  1. #1
    Join Date
    Aug 2011
    Location
    Eastern Shore, MD
    Posts
    798

    DOA scroll

    im wanting to know what, specifically, is going on inside this compressor...if anyone has cut one open because of this, it would be great!

    brand new 3 ton hp would not cool... i had 13 degrees sc ,10 degrees sh, 95degreodt, 84 idt, 4.12 delta ht, 11 degree delta t.
    1165 cfm
    ok, so this sucker racked my brain. i came upon the conclusion of an inefficient compressor bc i only had a 5.5amp draw and my hi side pres was a little low...the biggest thing was mycoil would NOT freeze, even with the fan off.

    and yes i did check the rv to make sure it wasnt being recirculated

    so what is going on inside the compressor? scroll plates not flat against each other?

  2. #2
    Join Date
    Feb 2011
    Location
    Cloverdale,Ca
    Posts
    299
    What were the low side and high side pressures? 410a or r22? how is the ducting static pressures?
    Living the dream !!

  3. #3
    Join Date
    Aug 2011
    Location
    Eastern Shore, MD
    Posts
    798
    The static was .63, I measured actual airflow

    It was 410a. It was about 145 low and 345 hi

  4. #4
    Join Date
    Feb 2011
    Location
    Cloverdale,Ca
    Posts
    299
    Interesting.. about 2.5 compression ratio... hard to disagree with you..I would like to know what you find inside the compressor also...Any other diagnosis is simply over my current pay grade!!! Good Job
    Living the dream !!

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