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Thread: trane RTAB 180

  1. #1
    Join Date
    Jan 2011
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    michigan
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    9

    Confused trane RTAB 180

    I was working on this chiller today , changing the oil filter and only drained out 2 gallons of oil, this chiller has not been looked at or oil changed for 7 years, after i changed the the filter, and put the vacumn pump on ,then charded the oil lines with oil , i started to pump new oil through the charging valve, but could not over come the pressure in the motor, 100psig, i am thinking my oil pump did not have balls ,or did i overlook the procedure,thanks for some input, on my delema.

  2. #2
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    Sep 2008
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    Total oil charge for RTAB108 is just over 4 gallons (16 litres), when you mention your pump could not overcome the pressure in the motor at the charging valve it makes me think you are not familiar with this type of chiller as the oil separator act as the oil sump.

    Suggest you familiarise yourself with the attached.
    Attached Files Attached Files

  3. #3
    Join Date
    Mar 2004
    Location
    ottawa canada
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    My question would be why are you changing the oil ??? what was the oil analysis ,whats the history of the machine ?? you could be doing more harm than good .. JMHO

    PS I think you mean an RTHB
    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 .

  4. #4
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    maryland
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    RTAB??? This one is news to me, post a pic if you can.
    Saving the world...one service call at a time.

  5. #5
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    Sorry my bad,

    If you are working on a watercooled screw I agree it is most probably an RTHB180 and my previous post does not apply, but if you working on anaircooled screw out of Europe it would most probably be an RTAB108.

    Regardless I agree with Graham routine changing of the oil is not required unless oil analysis results dictate otherwise.

    Mallron, typical RTAB picture on page 4 of the IOM in my previous post or in the attached
    Attached Files Attached Files

  6. #6
    Join Date
    Jan 2011
    Location
    michigan
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    9

    wrong mod #

    Quote Originally Posted by Screwit View Post
    Total oil charge for RTAB108 is just over 4 gallons (16 litres), when you mention your pump could not overcome the pressure in the motor at the charging valve it makes me think you are not familiar with this type of chiller as the oil separator act as the oil sump.

    Suggest you familiarise yourself with the attached.
    i was wrong in the model #it is a RTHB

  7. #7
    Join Date
    Jun 2009
    Location
    Lawng Eyeland
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    97
    I've changed many a RTHB oil filters, I have never drained that much oil unless you also drained the oil. No need to change the oil unless tests shows nfg. Now your gonna hafta add 2 gallons of oil. Run the chiller full unloaded for 1/2 an hour. Get the discharge superheat nice and hot. Then sight the oil level by the condenser barrel. Lemme know how far up the level is. Screw chillers are tricky.

  8. #8
    Join Date
    Jun 2009
    Location
    Lawng Eyeland
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    97
    Quote Originally Posted by Screwit View Post
    Total oil charge for RTAB108 is just over 4 gallons (16 litres), when you mention your pump could not overcome the pressure in the motor at the charging valve it makes me think you are not familiar with this type of chiller as the oil separator act as the oil sump.

    Suggest you familiarise yourself with the attached.
    My bad, went to the I.O.M. gotta sight the oil level off the end of the motor cuz it acts as a sump too. Tried to upload the IOM

  9. #9
    Join Date
    Mar 2004
    Location
    ottawa canada
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    2,057
    [QUOTE=. Run the chiller full unloaded for 1/2 an hour.

    RTHB is R22 . running unloaded will not bring the oil back . You need to run it LOADED for 1/2hr then shut it down and check the oil using the method in the IOM RTHB IOM 1 section 10-2
    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 .

  10. #10

    RTHB SB?

    Is there a IOM or SB that details doing a oil change? How low of suction pressure should I run the machine when pumping down?

  11. #11
    Join Date
    Sep 2008
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    Quote Originally Posted by arkiandev View Post
    Is there a IOM or SB that details doing a oil change? How low of suction pressure should I run the machine when pumping down?
    Yes this is covered in the IOM, with regards to changing the oil post #3 raises the question on this.
    Necessity is the mother of invention

  12. #12

    RTHB

    Can you, would you send me a copy of the IOM?

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