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  1. Replies
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    139

    Sorry yes, they are WOUND right into the phases...

    Sorry yes, they are WOUND right into the phases of the winding and cannot be replaced except by rewinding the motor and installing new ones.
  2. Replies
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    139

    Disconnect all the wires from the overload...

    Disconnect all the wires from the overload terminal posts. The overloads should not have any ohm reading to the motor terminals. If you do then the sensors inside have somehow shorted to the motor...
  3. Replies
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    198

    That is an 8 cylinder semi hermetic that used to...

    That is an 8 cylinder semi hermetic that used to be called a 6L83 for you old timers. Normal oil pressure in the 6L machines is 40 to 60 psi above suction. The oil safety should be set at 18 +/_ 1...
  4. Replies
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    533

    Kaptnkirk, Not sure if the replies from Pro's...

    Kaptnkirk,
    Not sure if the replies from Pro's forum get over here or not, but I sent a reply on that side to you.
    Ray
  5. Did you find out why the first compressor failed?...

    Did you find out why the first compressor failed? What broke the rod? Generally compressors don't fail unless some component of the system has caused it to fail. Your voltage won't be an issue for...
  6. Do you mean 480 volts? I've never seen a 600...

    Do you mean 480 volts? I've never seen a 600 volt Cope disc type compressor. Do you have the rubber gasket between the terminal box and the terminal plate? You can pick one up from your Cope...
  7. Techman, Why are you concerned with what...

    Techman,
    Why are you concerned with what rebuilders did 20, 30 ,or 40 years ago? Did you work in a rebuild shop back then? Do you have actual experience with "how it was"? I did, and I can tell...
  8. Jayguy, I am one of the "few" that provides...

    Jayguy,
    I am one of the "few" that provides quality rebuilds. Unlike you, however, I think our industry has more than a "few" shops able to do quality work. Rebuilding has come a long way in the...
  9. shop policies

    Jayguy,

    I take offense to your implication that because a compressor is from an independent company and not the OEM that it is somehow inferior. Have you ever been to my shop in Detroit and...
  10. Wiring mix up

    If the rebuilder mixed up the #6 and the #9 leads and only ran the compressor on 460 volt to test it, it would run fine. In the field if you were to wire it for 208/230 Part Wind Start and the...
  11. Replies
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    3,586

    Sorry, I just saw the date on that post. How did...

    Sorry, I just saw the date on that post. How did that happen?
    Ray
  12. Replies
    8
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    3,586

    It isn't that easy to "rebuild" that compressor. ...

    It isn't that easy to "rebuild" that compressor. When we re-manufacture them we fit new oversize pistons, replace the bearings, re-machine the crankshaft, surface grind the valve plate and replace...
  13. Replies
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    1,479

    Copper plating is most frequently found on close...

    Copper plating is most frequently found on close tolerance parts that operate at high temps. Examples would be compressor valves, bearing journals, or the oil pump. The process actually occurs in...
  14. Replies
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    2,214

    Elizeze, If you don't mind, could you provide...

    Elizeze,
    If you don't mind, could you provide the rest of the story? I have some questions and comments but I would like to know what you found first.
    Thanks,
    Ray
  15. Replies
    4
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    656

    dave1234, To provide overload protection on...

    dave1234,
    To provide overload protection on small 3 phase motors, you use an external overload with a warp disc inside it and connect it to the three other leads of the motor that is wound in a...
  16. Replies
    12
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    1,195

    We have had several of the "X" shaped sockets...

    We have had several of the "X" shaped sockets made at around $70.00 each, it's the only way to get the PRV out. We replace them with the hex head style. Not sure why Copeland made them that way.
  17. Helioson, I don't stock the oil cooler, You're...

    Helioson,
    I don't stock the oil cooler, You're going to have to go to your wholesaler for that one. If it's easier you can pick up the oil tube fitting there as well unless you want me to send you...
  18. Helioson, Sorry I didn't see your post earlier,...

    Helioson,
    Sorry I didn't see your post earlier, I was on vacation in the Dominican Republic. You probably figured it out by now, but in case you didn't.....
    The part is called an "oil tube...
  19. Replies
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    514

    I have terminal seals for those Airtemps if you...

    I have terminal seals for those Airtemps if you need them. Those were high speed compressors (3600 rpms) and they worked great until they didn't. When they failed they blew up inside due to the...
  20. Thread: 5h126

    by remanworld
    Replies
    9
    Views
    569

    Good morning, First of all, what's your net oil...

    Good morning,
    First of all, what's your net oil pressure? Is the compressor noisy? Has anyone been working on it before now? What application is it? Why were you called out? I'm sure we can...
  21. Replies
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    1,925

    Guys, Go onto Grainger and order #A315512. Its...

    Guys,
    Go onto Grainger and order #A315512. Its a 3 pack and its 1/8 mpt run tee. Every Copeland that goes out the door of our shop gets one and we ship alot.
    Thanks,
    Ray
  22. Replies
    3
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    749

    All semi hermetic compressors DO NOT have...

    All semi hermetic compressors DO NOT have internal pressure relief valves. Under the old laws, only compressors over 10 hp were required to have an internal PRV. Thats why the very early old...
  23. In our business (compressor remanufacturing),...

    In our business (compressor remanufacturing), almost ALL of the electrical failures in compressors are mechanical in nature. Worn bearings, broken valves, etc. that cause the motor to burn out. I...
  24. Our company in Michigan does not do service but...

    Our company in Michigan does not do service but we do provide remanufactured compressors for Liebert equipment and we ship to all 50 states and Puerto Rico. Liebert equipment seems to be very...
  25. Replies
    12
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    1,195

    The relief is behind the discharge service valve...

    The relief is behind the discharge service valve and the gasket is the service valve gasket.
  26. Replies
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    468

    Dave1234, I'd like to help but I'm not sure what...

    Dave1234,
    I'd like to help but I'm not sure what it is that your asking. What do you mean by "what would the symptoms be of trying to unload a non-unloading head? Just trying to excersice my brain...
  27. Replies
    40
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    3,298

    As a compressor remanufacturer, I always...

    As a compressor remanufacturer, I always challenge techs to find the REAL cause of a compressor failure. Sometimes I over do it and come across as one sided, which I try not to be. In this case I...
  28. Replies
    40
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    3,298

    Here's my take on the compressor murder. The...

    Here's my take on the compressor murder. The silver metal flake that is suspended in the oil is whats left of the main bearings. When they failed that allowed the rotor to move against the inside...
  29. Replies
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    940

    Years ago I attended a seminar put on by the...

    Years ago I attended a seminar put on by the Trane company and the rep told us that several oil changes are critical to remove the acid from the system. I am not a big fan of oil additives that...
  30. Replies
    33
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    2,223

    JP, Besides, no need to visit Dearborn (but you...

    JP,
    Besides, no need to visit Dearborn (but you would be very welcome). We stock that model and ship nationwide. PM me if you need anything compressor related, parts, info, whatever. I'll see...
  31. Replies
    33
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    2,223

    Like I said before, no offense taken. When we do...

    Like I said before, no offense taken. When we do a compressor we strip it down to bare casting and start from there. Castings are chemically cleaned and then cylinders are measured and resized. ...
  32. Replies
    33
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    2,223

    ICanHas, Thats a good one! 20 years ago when we...

    ICanHas,
    Thats a good one! 20 years ago when we needed to do field rebuilds of large tonnage Tranes and 5H Carriers, it was standard procedure to take along a cylinder (or two) of R-11 to "dry...
  33. Replies
    33
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    2,223

    Tech Rob, Not a problem, I was just trying to...

    Tech Rob,
    Not a problem, I was just trying to help prevent another compressor failure. Often when you get called out on an after hours emergency that requires a compressor change out, things could...
  34. Replies
    33
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    2,223

    I also would like to respectfully disagree with...

    I also would like to respectfully disagree with your comments on which rings wear the fastest. The distance from the oil pump has nothing to do with cylinder lubrication because the cylinders are...
  35. Replies
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    2,223

    Excuse me, I had no intention of offending.

    Excuse me, I had no intention of offending.
  36. Replies
    33
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    2,223

    The piston rings are worn like that because...

    The piston rings are worn like that because liquid refrigerant is entering the cylinders and diluting the oil film on the cylinder walls. Generally compressors don't fail without a reason. You...
  37. Thread: Caryle

    by remanworld
    Replies
    9
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    853

    I don't understand how a brand new compressor...

    I don't understand how a brand new compressor could be delivered with a blown relief valve. You should check all of the discharge valve paddles to make sure none are chipped or cracked. Sometimes...
  38. Thread: Bad valves?

    by remanworld
    Replies
    34
    Views
    2,593

    Everyone, There is one thing to remember when...

    Everyone,
    There is one thing to remember when talking about bad valves in a compressor. Bad DISCHARGE valves will cause the compressor pressures to equalize immediately on shut down and cause the...
  39. Huntcrazy, The Brunner is an R-20000 for sure,...

    Huntcrazy,
    The Brunner is an R-20000 for sure, but they also made an R-2000. I don't think the Mills model number is correct. their numbering system was made up of the numbers 1 through 9 if I...
  40. Replies
    30
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    3,108

    Most likely it's what you said: "good luck on...

    Most likely it's what you said: "good luck on that". I have been rebuilding compressors since 1972 in Michigan and when I started it was about 50/50 open drives and semi hermetics. Now its about...
  41. Replies
    30
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    3,108

    I remember water cooled seals, what a blast from...

    I remember water cooled seals, what a blast from the past! Theaters around here used to run open drive Chrysler AirTemp radials.
  42. Replies
    30
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    3,108

    tranger03, Do you work on any of the smaller...

    tranger03,
    Do you work on any of the smaller 340 series Vilters? If so, do they leak at the rates shown for the 400 series units? Just curious because we don't see any of the 400 series machines...
  43. Replies
    30
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    3,108

    I've been in the compressor remanufacturing...

    I've been in the compressor remanufacturing business since 1972 and have some experience with both open and semi hermetic compressors. Open drives, of course, are the original design dating back to...
  44. Replies
    79
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    11,326

    VTP99 Apparently we need to keep to the topic of...

    VTP99
    Apparently we need to keep to the topic of single cylinder compressors, although the concept applies to single or multi cylinder compressors and I thought it would be good intel for all. I'll...
  45. Replies
    79
    Views
    11,326

    Yes. You could replace a valve plate on a...

    Yes. You could replace a valve plate on a compressor and accidentally leave a suction valve reed out (which would be the same as having one broken reed). The compressor would still pump down and...
  46. Replies
    79
    Views
    11,326

    Everyone, Valving off the suction service valve...

    Everyone,
    Valving off the suction service valve to check for proper valve operation is not a definitive test. A compressor can have a broken suction reed and still pull into a vacuum, it just takes...
  47. Replies
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    992

    ar-hvac-man, I have never heard of a compressor...

    ar-hvac-man,
    I have never heard of a compressor beginning to leak after a power outage. If you are going to re-torque the bolts watch out, the two center bolts have a different spec than the rest....
  48. Replies
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    5,739

    pherman, That was a Chrysler Airtemp model 3011...

    pherman,
    That was a Chrysler Airtemp model 3011 or 3015. They were suspended in the unit by that top bracket and isolated with rubber mounts. Those compressors were 3600 rpm instead of everyone...
  49. Replies
    17
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    1,775

    Most likely the clearances inside the compressor...

    Most likely the clearances inside the compressor are excessive. You can try to clean the pick up screen, though. On a 9R compressor the screen is behind the small diamond shaped cap on the lower...
  50. Replies
    8
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    672

    Dave1234, The oil screen is screwed into a...

    Dave1234,
    The oil screen is screwed into a fitting on the inside of the casting. you need to remove the front bearing housing to access it. When you do this be careful, there are thrust washers on...
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