CVHE 050 OIL PUMP RELAY 1K8
Results 1 to 10 of 10
  1. #1
    Join Date
    Jul 2012
    Posts
    11

    CVHE 050 OIL PUMP RELAY 1K8

    New to the forum and new to the trade.

    I have been with a factory service group for about a year as an apprentice and I've been lucky to be on lots of interesting jobs, mostly dealing with chillers. I get curious about the specifics of some of the jobs and I find myself doing research on my own time for alternative solutions and information and this research seems to help with my understanding of the systems that I am working on and hopefully will make me a better mechanic.

    Currently I am working with a journeyman on a job that originally started as an overhaul on a early 90's CVHE chiller that has been converted to R123.

    The Trane original serial number is L93C03034. The chiller is a CVHE050 that has UCP1 controls.

    As the job evolved, it turned into an Adaptiview upgrade, along with other items such as chill/condenser water isolation valves. Currently we have reached the end of the controls update and during testing last Friday we found that the oil pump would not start and was pulling high amperage while trying to start.

    I think that the current relay 1K8, that was reused from the original UCP1 panel, isn't working correctly. I am not getting any current through the start winding when the motor is commanded to start.

    Trane says it is a RLY00853 or superseded RLY01888. I've checked with parts and they would have to order in. I was wondering if anyone knew of a field replacement current relay that would work. I cannot find any information on the relay that would allow me to purchase it locally.


    Thanks again for any help.

  2. #2
    Join Date
    Mar 2004
    Location
    ottawa canada
    Posts
    1,997
    10/1 bet the pump is wired wrong .
    The 64 roars to life Whoo hoo ...shes a rolling chassis .
    You bend em" I"ll mend em" !!!!!!!
    I"m not a service tech.. I"m a thermodynamic transfer analyst & strategic system sustainability specialist
    Best Austin Healey In Show twice in 2013 .....All those hrs paid off .

  3. #3
    Join Date
    Aug 2006
    Location
    Mixing oil and fire with a big spoon.
    Posts
    4,227
    i was thinking that perhaps the motor terminal lead fell off internally during the overhaul

    did the motor get ohmed out?
    You either love bacon or you are wrong.

    4 gallons of gas, 2 miles of travel, teaching my daughters how to drive in the high school parking lot...priceless!

  4. #4
    Join Date
    Jul 2012
    Posts
    11
    Tomorrow the motor will get check for proper wiring and connections. The problem was found late Friday afternoon and we didn't check all the basics other than noticing that the relay NO contact wasn't making.

    The oil pump was checked at the armature shop while the compressor motor, vanes, and impellers were there.

    It'll be interesting to see what the connections at the motor and the resistance readings look like tomorrow.

    Thanks for the suggestions.

  5. #5
    Join Date
    Aug 2006
    Location
    Mixing oil and fire with a big spoon.
    Posts
    4,227
    i am a big believer in using OEM parts. i don't know what a compatible relay would be, but i wouldn't use it. as you know, if you burn up an oil motor on the baby, it is a little expensive to replace it.
    You either love bacon or you are wrong.

    4 gallons of gas, 2 miles of travel, teaching my daughters how to drive in the high school parking lot...priceless!

  6. #6
    Join Date
    Jul 2012
    Posts
    11
    Well you'll were right, incorrect pump wiring. The panel to pump terminals were correct, but the terminals 1, 2, 3 were not actually 1,2,3. The motor was wired incorrectly to the pump head terminals. An ohm meter made it clear.

    Thanks for the help.

  7. #7
    Join Date
    Mar 2004
    Location
    ottawa canada
    Posts
    1,997
    Quote Originally Posted by jtcamp View Post
    Well you'll were right, incorrect pump wiring. The panel to pump terminals were correct, but the terminals 1, 2, 3 were not actually 1,2,3. The motor was wired incorrectly to the pump head terminals. An ohm meter made it clear.

    Thanks for the help.
    Not bad eh !!! For a knuckle draggin chiller tech
    How much was my bet ????
    The 64 roars to life Whoo hoo ...shes a rolling chassis .
    You bend em" I"ll mend em" !!!!!!!
    I"m not a service tech.. I"m a thermodynamic transfer analyst & strategic system sustainability specialist
    Best Austin Healey In Show twice in 2013 .....All those hrs paid off .

  8. #8
    Join Date
    Jul 2012
    Posts
    11
    Quote Originally Posted by Healey Nut View Post
    Not bad eh !!! For a knuckle draggin chiller tech
    How much was my bet ????
    I don't know, but likely more than I can afford as a lowly apprentice !

  9. #9
    Join Date
    Aug 2006
    Location
    Mixing oil and fire with a big spoon.
    Posts
    4,227
    Quote Originally Posted by Healey Nut View Post
    Not bad eh !!! For a knuckle draggin chiller tech
    How much was my bet ????
    As I understand it, it was 100:1 odds...how much did you bet? I had a 50 on it!

  10. #10
    Join Date
    Mar 2005
    Location
    Lexington, NC
    Posts
    64
    what if you have the machine loaded with refrigerant and oil?
    Do they have a current relay with the start windings on the other pin?
    This oil pump is running backwards............

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