Page 2 of 2 FirstFirst 12
Results 14 to 22 of 22
  1. #14
    Join Date
    Aug 2005
    Location
    iowa
    Posts
    1,649
    Quote Originally Posted by flange View Post
    the problem is that you are a control guy.....need a service tech.

    in many places rebuilt means they take it apart, inspect it, and put it back together using maybe new gaskets. remanufactured as as stated above. without something holding that gasket there, and possibly with liquid entering the cyclinder, you get a double whammy and poof, thar she blows.
    wow flange! as usual right on

  2. #15
    Join Date
    Jul 2002
    Location
    Yuma, AZ
    Posts
    2,361
    My first thought is liquid flooding. This could be continuous if the superheat was way low for some reason. It could be a piping issue that allows a startup surge of liquid refrigerant and/or oil to surge into the compressor. If this is a refrigeration system with defrost of any kind, a surge of liquid often follows a defrost. A suction accumulator may be a good investment.

    The modern compressor valves are very rugged. New gaskets are more likely to fail than old baked on gaskets. Flooding can blow a new gasket and leave no evidence in the valves.
    "I have never let my schooling interfere with my education."
    Mark Twain
    More at: http://www.quotationspage.com/subjects/education/

  3. #16
    Join Date
    Sep 2010
    Location
    San Diego
    Posts
    66

    Compressor Gasket

    Thanks for your input its making sense. This units does have poor piping and low superheat. However, I've always thought of blown head gaskets as a compressor problem but you've convinced me otherwise.

  4. #17
    Join Date
    Jul 2002
    Location
    Yuma, AZ
    Posts
    2,361
    BTW, Participate some more and go for pro.
    "I have never let my schooling interfere with my education."
    Mark Twain
    More at: http://www.quotationspage.com/subjects/education/

  5. #18
    Join Date
    Sep 2010
    Location
    San Diego
    Posts
    66

    Going Pro

    Going Pro is my goal

  6. #19
    Join Date
    Aug 2010
    Location
    Dearborn MI
    Posts
    109

    head gasket

    Honestly, I don't understand the way this thread has evolved. Originally there was a problem with a Cope 6D head gasket missing the center bolt from a local reman shop. Was the missing bolt the problem or not? Let me tell you my experience. The center bolt was added by Copeland to prevent VALVE PLATE GASKETS from failing. Head gaskets on Cope disc type compressors are all on the high side. There is no center web separating high from low side pressures like on Carlyles or Dunham Bush or Frigidaire or Servel or ???. Get my point? I've been around and I've seen all these compressors and Cope Disc type is different. Put the bolt in, torque it to 35 ft lbs, don't use the rebuilder anymore, and call it a day! If you want to know more about Cope valve plate gasket evolution, contact me at remaconcompressors@comcast.net

  7. #20
    Join Date
    Sep 2010
    Location
    San Diego
    Posts
    66

    Thumbs up Copeland Compressor

    Thanks Remanworld I appreciate the info. Right now I'm waiting for the parts and yes I'll install the center bolt.

  8. #21
    Join Date
    Jul 2002
    Location
    Yuma, AZ
    Posts
    2,361
    Quote Originally Posted by basprofessional View Post
    ...Post 1...The gaskets are paper and the center bolt for the valve plate is missing in everyone...
    I for one missed this in the original post. My Bad. Still a gasket failure between cylinders between the compressor body and the valveplate is almost surely caused by hudraulic forces when incompressible liquid is trapped above the piston. (Flooding.)
    "I have never let my schooling interfere with my education."
    Mark Twain
    More at: http://www.quotationspage.com/subjects/education/

  9. #22
    Join Date
    Aug 2010
    Location
    Dearborn MI
    Posts
    109

    Blown gaskets

    Lynn Comstock is right, flooding is a probable cause. Compressing a non compressible like liquid refrigerant or oil will take the gaskets out. Do you have a crankcase heater? Does it work? Check your superheat. Don't ad oil to the system unless you know why and where the oil went. Compressors that pump oil will eventually bring the oil back, in a slug. Good luck.

Page 2 of 2 FirstFirst 12

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event