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I just put a new compressor in with a reversing valve aswell I put a suction drier and a liquid line drier on.I flushed the system with proflush and nitrogen. this system is 4 yrs old I didnt put it in im just the one having to fixit. the coils are clean and also put a new thermostat on cause it was malfunctioning. The compressor had to be replaced due to burn out and the lines had black sluge all thru it. I pulled the pistons out and cleaned them aswell. I scaled my r-22 in this 13 seer split systems holds just over 14 lbs. after starting system and letting it run for about 30 min on a 74 degree day my pressures were 58 and 160 with a 50 degree super heat by useing the field piece superheat meter. I came to the con clustion that I am restricted and began blowing the system out again with nitrogen I have my own bussiness with noone to get advice from due to the supply house being closed. after running 2 nitrogen tanks thru the system I started it back and im 3/4 of the way charged and my pressures are suction in vac and head at 40. question is where could my restriction be or is it something else when I blow it out it seems fine. this is a copeland scroll compressor on a 5 ton goodman

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Hello Sometimes there is a SCREEN in the liquid line just b4 the piston in the tube.You had a SEVERE burnout the filter driers are shot from doing there job even with the short run time.Also you could try pulling the piston out and blow out the cap tubes in the evap.Close the suction service valve and pressurize the pipe and let it blow out the piston holder ot help clear those tiny tubes.Use a OVERSIZE liquid drier this time,Get a 10 ton drier or better.

Posted on Sep 11, 2010

  • Jason Pendleton
    Jason Pendleton Sep 11, 2010

    Thanks for you comments I have already done that with exception of over sized drier I dont understand how that would help if the resrition can fit thru the liquid line the openings on the drier are the same size and a drier bells out with screens on each end. thank you for your help

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    l10635a.gif
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