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  1. #1
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    RTAC 3504 Liquid Line Filter

    I have recently had some RTAC at a site come back with moisture in the oil analysis. Going to change the filter already have the kit. Trane simply says close the liquid line ball valve and confirm the EXV is 100% closed.
    I have tried just that. Recovered about 40lbs of gas and the pressure climbs. Has anyone had the issue with the EXV not being 100% sealed. Just going to recover the entire charge at this point. Just wondering if there is typical amount you should recover in that small section of the liquid line. Thanks in advance.

  2. #2
    Join Date
    Mar 2004
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    ottawa canada
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    Pass the popcorn this is going to be entertaining
    The toy chest is officially full ... I got a new toy..... 2007 Aston Martin V8 Vantage and yes it still gives me goosebumps
    You bend em" I"ll mend em" !!!!!!!
    I"m not a service tech.. I"m a thermodynamic transfer analyst & strategic system sustainability specialist
    In the new big shop , greasin', oilin' . tweakin' n shinin' !!

  3. Likes manny238 liked this post
  4. #3
    Join Date
    May 2012
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    What filter you changing to get the moisture out?

    Sent from my SM-G930V using Tapatalk

  5. #4
    Join Date
    Jul 2007
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    Id also like to know what filter your going to change for the moisture??? I definitely think your in over your head.

  6. #5
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    May 2012
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    How did it go did you get it recovered?

    Sent from my SM-G930V using Tapatalk

  7. #6
    Join Date
    Jan 2008
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    New Jersey
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    Are you going to change oil and put new refrigerant in unit? How did moisture get introduced into system, do you have any service history of system?

    Sent from my VS501 using Tapatalk

  8. #7
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    I think he got scared off.

  9. #8
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    Jun 2010
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    Quote Originally Posted by R123 View Post
    Id also like to know what filter your going to change for the moisture??? I definitely think your in over your head.
    The moisture screen of course!


    Sent from my iPhone using Tapatalk

  10. #9
    Join Date
    Mar 2004
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    ottawa canada
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    Quote Originally Posted by cperk View Post
    The moisture screen of course!


    Sent from my iPhone using Tapatalk
    Hello ....Trane parts how can I help you ......yes Im looking for a moisture screen for an RTAC ....................And do you guys stock left handed screwdrivers , I need one to install-it. .
    The toy chest is officially full ... I got a new toy..... 2007 Aston Martin V8 Vantage and yes it still gives me goosebumps
    You bend em" I"ll mend em" !!!!!!!
    I"m not a service tech.. I"m a thermodynamic transfer analyst & strategic system sustainability specialist
    In the new big shop , greasin', oilin' . tweakin' n shinin' !!

  11. #10
    Join Date
    Jun 2017
    Location
    New Jersey
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    Thread Starter
    I am a huge fan of sarcasm.
    I took the suggestion from someone who didn't know Trane used a paper filter in the liquid line. I was little skeptical myself about the paper filter removing moisture. The unit it self was actually down for a couple months building had a major power failure to the transformer that powered that specific HDP. From small leaks in the typical spots transducers, discharge service valve, etc. I wouldn't really say I am in over my head just haven't really had any moisture issues. I have put a good amount time on the RTAC's.

  12. #11
    Join Date
    Jul 2007
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    Quote Originally Posted by kirgan89 View Post
    I am a huge fan of sarcasm.
    I took the suggestion from someone who didn't know Trane used a paper filter in the liquid line. I was little skeptical myself about the paper filter removing moisture. The unit it self was actually down for a couple months building had a major power failure to the transformer that powered that specific HDP. From small leaks in the typical spots transducers, discharge service valve, etc. I wouldn't really say I am in over my head just haven't really had any moisture issues. I have put a good amount time on the RTAC's.
    There is a procedure for removing moisture and acid from RTACs but Im not posting it in the open forum. Get your post count up and apply for pro membership and we can discuss it on the closed forum.

  13. #12
    Join Date
    Nov 2011
    Location
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    Without having an oil sample trend, I would do nothing.

    Begin trending it every 3-6 months, and see if the levels go up, down, or stay the same. Then plan a course of action.

    It could be that whoever took the sample did a poor job, did it on a rainy day, or contaminated it with their collection gear. I have seen sample trends with a huge spike on one sample....only explanation is whoever collected it screwed up.

  14. #13
    Join Date
    Mar 2005
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    Dover, Pa.
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    Now this is the kind of answer I would expect to see on this forum, not the other ones that would make fun of someone for asking a question...no matter how silly it may seem.
    Good mechanics are getting harder to find.....have you encouraged or discouraged a young mechanic today?

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