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  1. #1
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    Rack very acidic



    Anyone got an Idea how to remove acid from a rack thats got 5 bitzer 6G's? Whats the best solution...



  2. #2
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    Re: Rack very acidic

    Hi Ulster man.
    The normal thing to do on any system, is to recover the contaminated refrigerant.

    Drain and change the oil. Pull a deep vac.
    Recharge with fresh refrigerant having fitted burn out liquid line driers.

    If the contamination is severe then fitting a suction line filter may well be advisable.

    Once the system is runnable then you still may well have to do several filter changes.
    A second oil change may also be necessary.

    Monitoring the acid levels will decide how many changes are required.

    Are the acid levels due to a motor burn out or excessive air/moisture in the system?

  3. #3
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    Re: Rack very acidic

    Yes, several racks with many burnt out motors, lack of using vac pumps to boot... This is asian markets, washing out compressors with DIESEL i might add too! Got to start somewhere, recovering the refrigerant is the idea thing but money saving is the only answer here... Ill be changing the oil filters etc... are there any products on the market like acid away that comes by the gallon????

  4. #4
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    Re: Rack very acidic

    fit specific core driers for acid in both suction and liquid, change the oil as often as budget allows, change acid driers every few hours until an improvement is seen, you may still lose compressors in the mean time though!

    al

  5. #5
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    Re: Rack very acidic

    Quote Originally Posted by ulster_man View Post
    Yes, several racks with many burnt out motors, lack of using vac pumps to boot... This is asian markets, washing out compressors with DIESEL i might add too! Got to start somewhere, recovering the refrigerant is the idea thing but money saving is the only answer here... Ill be changing the oil filters etc... are there any products on the market like acid away that comes by the gallon????

    When out too save a dime it will cost you 1000,000
    in the end! I love guy's like you you keep me working.

  6. #6
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    Re: Rack very acidic

    Moderators....... I cannot start new threads... Whats the problem???

  7. #7
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    Re: Rack very acidic

    Quote Originally Posted by Grizzly View Post
    Hi Ulster man.
    The normal thing to do on any system, is to recover the contaminated refrigerant.

    Drain and change the oil. Pull a deep vac.
    Recharge with fresh refrigerant having fitted burn out liquid line driers.

    If the contamination is severe then fitting a suction line filter may well be advisable.

    Once the system is runnable then you still may well have to do several filter changes.
    A second oil change may also be necessary.

    Monitoring the acid levels will decide how many changes are required.

    Are the acid levels due to a motor burn out or excessive air/moisture in the system?
    Good advice from Grizzly here.

    I have seen some good results from Installing these Oil Separators & Filters on the systems.

    http://www.temprite.com/product.asp?...ltkit&aux=true

  8. #8
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    Re: Rack very acidic

    ulster man how did u manage to find yourself working out there if you dont mind me asking?

  9. #9
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    Re: Rack very acidic

    Quote Originally Posted by Grizzly View Post
    Hi Ulster man.
    The normal thing to do on any system, is to recover the contaminated refrigerant.

    Drain and change the oil. Pull a deep vac.
    Recharge with fresh refrigerant having fitted burn out liquid line driers.

    If the contamination is severe then fitting a suction line filter may well be advisable.

    Once the system is runnable then you still may well have to do several filter changes.
    A second oil change may also be necessary.
    Hi Grizzly,

    That was on the old days. Today, you can recycle the contaminated gas, use it to flush the acids out out the system, and re-use the recycled gas with total warranty. This is the best way to eliminate all acids from a plant, and an economic one, as you reuse the existing gas. No need to buy fresh refrigerant.

    This is the way professionals solve the acids problem.

    Regards,

    Nando.

  10. #10
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    Re: Rack very acidic

    Quote Originally Posted by thebigcheese View Post
    ulster man how did u manage to find yourself working out there if you dont mind me asking?
    What exactly your meaning???

    I'll reply by saying that the local labour here are untrained, self taught and thier knowledge of whats going on with the system is very limited.
    Im here training them, helping with new designs overseeing instalations as they dont know how to pipe a system properly.
    They have local made Bitzer compressor racks with oil controls designed wrong, each compressor running subcoolers and each have own oil seperators piped to resevoir with the bleed valved piped to the suction header on a 2 stage compressor. LOL
    So you can guess we are having lots of trouble!!
    PS... not far from Thailand either

  11. #11
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    Re: Rack very acidic

    Yea, I manage to purchase several burn out drier cores both for suction and liquid filters, changed these several times while checking the compressor oil with Lab results and things are getting better. No gas was reclaimed or recycled.
    Acid caused by too many burnt out coils that have been rewound using china made copper!

  12. #12
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    Re: Rack very acidic

    Quote Originally Posted by ulster_man View Post
    What exactly your meaning???

    I'll reply by saying that the local labour here are untrained, self taught and thier knowledge of whats going on with the system is very limited.
    Im here training them, helping with new designs overseeing instalations as they dont know how to pipe a system properly.
    They have local made Bitzer compressor racks with oil controls designed wrong, each compressor running subcoolers and each have own oil seperators piped to resevoir with the bleed valved piped to the suction header on a 2 stage compressor. LOL
    So you can guess we are having lots of trouble!!
    PS... not far from Thailand either
    ulster_man,

    I am just North of you located in Thailand.

    I am also in the Supermarket sector and train local Refrigeration Technicians.

    Post me a private message, always glad to assist.

    I have a good notion who you are working for.

    best regards
    buddy

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