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  1. #27
    Join Date
    Apr 2004
    Location
    Charlotte, NC
    Posts
    709
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    Quote Originally Posted by meoberry View Post
    Never heard of that brand. I found the problems start after the condensor gets plugged up. I guess the high temp or heat does something to the oil or refrigerant. I always believed that dupont shoved this stuff down our throats without proper testing. I don't even have the stuff in my personal truck. It runs 401a cools alot better. I am going to try hot shot in it next because of high head pressure with 401a.
    I am a bit confused. If it is the oil you are concerned about, why would changing the refrigerant stop the cap tube from clogging up?

  2. #28
    Join Date
    Dec 2008
    Posts
    4
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    out of warranty 409a works great also know man who worked for school system swore by using 22 in 134 systems never had problems

  3. #29
    Join Date
    Nov 2007
    Posts
    11
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    Well i agree that it wont stop the cap tube up nearly as bad in my experiences. If u take a look at a temperature chart might clear things up better than i describe!

  4. #30
    Join Date
    May 2005
    Posts
    1,552
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    cant we just go back to r-12 and mineral oil??

    time to take back what works..
    the frog licking barking humping greenies need a good kick in the arse..

  5. #31
    Join Date
    Dec 2007
    Location
    Indianapolis
    Posts
    677
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    Quote Originally Posted by primmers View Post
    cant we just go back to r-12 and mineral oil??

    time to take back what works..
    the frog licking barking humping greenies need a good kick in the arse..
    Preach it brother!!!!!!!
    B-

    Anything is possible with God

    Fortunately I keep my feathers numbered for just such an emergency - F. Leghorn

    Ain't I a stinker - B. Bunny

    \m/ (>.<) \m/ ROCK HARD!!

  6. #32
    Join Date
    Jul 2012
    Location
    colorado
    Posts
    1
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    It is my understanding (field rep. united refrigeration) that the residue is a sodium based chemical solidified from a high heat condition.It collects in the condenser and there is no known remedy. I too am plagued with this affliction.
    barry

  7. #33
    Join Date
    Jun 2008
    Location
    NW Florida
    Posts
    767
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    converted several. 134a to 409a since last posting. and yes changing compressors after a captube plug up. Is a good idea. I have found that the original com. does not last a year after cap tube plugs. valves will fail or bearings seize. I always give the option to the customer. Most customers. Do not want to take a chance on the unit failing again and will go with the compressor along with new cap tubes.

    That is a good idea about the drier for an accumulator. i have changed captubes to x-valves before and was a pain to get charge right. Without an accumulator. i have used 3/4 tubing as an accumulator before on small systems. Makes them recover faster.

    I do agree. r-12 was much better than this stinking 134a. As for why change freons: lower comp. temps, faster recovery and have not had a cap tube plug in any of the systems I have changed over.The most important part is the customer is happy.

  8. #34
    Join Date
    Jun 2008
    Location
    NW Florida
    Posts
    767
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    On another note. I have had systems that have never been into. That have had plugged tubes. So it is not a poor service issue. Rather. a poor refrigerant issue.

  9. #35
    Join Date
    Sep 2007
    Location
    NH
    Posts
    1,334
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    I think you mean receiver not accumulator.... And most of the time plugged or dirt condenser coils will cause your cap tube to plug from your oil cookin.

  10. #36
    Join Date
    Aug 2009
    Location
    Peoria IL
    Posts
    73
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    Quote Originally Posted by primmers View Post
    cant we just go back to r-12 and mineral oil??

    time to take back what works..
    the frog licking barking humping greenies need a good kick in the arse..
    That would be to easy of a fix

  11. #37
    Join Date
    Jan 2011
    Posts
    25
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    I have noticed that Braziallian Tecumseh compressors seem to have oil in them from the factory that makes lots of wax in the cap tube. I have had excellent luck wireing the fan motor to run 24/7 after the repair. Got 5 years on some of the units post repair sor far. No more clogging.

  12. #38
    Join Date
    Jul 2012
    Location
    Western KY
    Posts
    1,221
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    POE is garbage regardless of refrigerant type.

  13. #39
    Join Date
    Apr 2003
    Location
    Maple Grove, MN
    Posts
    2,180
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    Quote Originally Posted by Kenscom View Post
    I have had excellent luck wireing the fan motor to run 24/7 after the repair. Got 5 years on some of the units post repair sor far. No more clogging.
    That almost sounds like a good idea, but wouldn't that just make the condenser get dirtier, and in turn make the cap tube plug up again sooner?

    I am thinking of a typical customer here that does no maintenance and only calls when it quits working. For someone who gets regular maintenance, it sounds like a good plan.

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