Results 1 to 10 of 10
  1. #1
    Join Date
    Jul 2007
    Posts
    12

    Semi Hermetic Screw up

    I was wiring up a rebuilt Trane semi hermetic today and forgot to install the strips that tie lugs 4.5.6 together, (240V). The old ones were to be used on this one but got taken away with the old compressor. They were out of sight and out of mind I guess. Anyway I threw the disconnect on and knew something was wrong so shut it right back off. I now have to wait til tomorrow to find out if compressors going to be ok. Nothing shorted to ground but my ohms reading were way off. Do you think I killed it?

  2. #2
    Join Date
    Nov 2004
    Location
    up in the hizzy
    Posts
    1,379
    Relax, its not your fault, those _______(fill the blank) compressors are nothing but a big pile of Chinese junk , weird cause new compressors typically comes a little bag with the "strips".
    seriously, chances are its all good.

  3. #3
    Join Date
    Nov 2007
    Location
    Mississippi
    Posts
    1,347
    I doubt you hurt it. They are tougher than you think. I once hooked a 50 ton 208 volt compressor to 460 v. (In my defense, the motor shop wound it wrong). That compressor grunted and moaned while pulling 600 + amps. Did not damage windings somehow!? You'll be fine.

  4. #4
    Join Date
    Sep 2002
    Posts
    2,735
    There goes my Emerson Stock!

  5. #5
    Join Date
    Jul 2007
    Posts
    12
    Quote Originally Posted by socotech View Post
    I doubt you hurt it. They are tougher than you think. I once hooked a 50 ton 208 volt compressor to 460 v. (In my defense, the motor shop wound it wrong). That compressor grunted and moaned while pulling 600 + amps. Did not damage windings somehow!? You'll be fine.
    I hope I'm as lucky

  6. #6
    Join Date
    Jul 2011
    Location
    Nanaimo,BC, Canada!
    Posts
    346
    That's why I always keep all the parts from the faulty compressor on a change out.. I got some spares if you need em... Lol

  7. #7
    Join Date
    Jul 2007
    Posts
    12
    Quote Originally Posted by Frostmonkey74 View Post
    That's why I always keep all the parts from the faulty compressor on a change out.. I got some spares if you need em... Lol
    Yea it was under warranty and they were in a big hurry to return it. Crane set it in the back of the truck and off it went. I pulled the lugs off but forgot the rest. I just hope I didn't damage the windings.

  8. #8
    Join Date
    Jul 2011
    Location
    Nanaimo,BC, Canada!
    Posts
    346
    Only time will tell in that one.. Recheck you ohm readings of your windings before you fire it back up. I suspect it will be different after they've cooled off.
    It might be a good idea to check the windings with a good megger record the readings and follow up in a month or so, to check if it changes..

  9. #9
    Join Date
    Mar 2003
    Posts
    7,326
    if it was part winding start, chances would be greater of hurting it. standard three phase should hopefully be ok.

  10. #10
    Join Date
    Jul 2007
    Posts
    12
    Quote Originally Posted by flange View Post
    if it was part winding start, chances would be greater of hurting it. standard three phase should hopefully be ok.
    All is well thanks for the encouraging responses

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