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Thread: Colourful Descaling

  1. #1
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    Colourful Descaling

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Hi

    Im in the process of cleaning up an old Brasilia Portafino. My coffee techician mate pulled it all apart for me so I could clean it up and descale the boiler and pipes. After descaling with Cafetto Espresso Clean, the stainless steel boiler has turned a coppery pink colour. Im not sure of the exact reason, but just wondering if its just something on the surface that will polish off or its more than that. Can anyone inform me more on this?

    Thanks

  2. #2
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    Re: Colourful Descaling

    Sounds like some copper has plated out on the stainless from the descaling solution, dissimilar metals in an electrolyte?

  3. #3
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    Re: Colourful Descaling

    Why would you be descaling with Espresso Clean? Espresso Clean is for backflushing.

    You should be using the Cafetto acid solution that comes in those big 10 L bottles.

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    Re: Colourful Descaling

    Sorry my mistake, Im using the Cafetto acid.

    Yeah, there was a copper pipe in there too that I couldnt get off the boiler. Anything that can be done?

    Regards

  5. #5
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    Re: Colourful Descaling

    Just let it sit a while. The chrome plated wand on my San Marino went pink in bits but now its all chrome looking again. I didnt do anything to it, it just returned to normal in its own time after a good rinse.

    Might just have been a reaction to the acid?

    Post up a few piccies of the pipe. Theres a few folk on here that have restored a Brasilia Portafino I think. They might beable to help.. and I just like piccies. :)

  6. #6
    Mal Dimal's Avatar
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    Re: Colourful Descaling

    Quote Originally Posted by 667A767670676661607C70150 link=1298929560/0#0 date=1298929560
    the stainless steel boiler has turned a coppery pink colour.
    Gday Stu.... :)

    Pretty sure these machines use a Nickel Plated Copper Boiler, not s/s. The reason for the bright copper pink colouration is down to electrolytic deposition as suggested above and is usually only a layer thats a couple of atoms thick. It can probably be polished off quite easily or allow it to oxidise and fall off over time.

    If you want to give polishing a go, try it out first on a section of the Boiler thats not easily seen when installed, just to play it safe.... ;)

    Mal.

  7. #7
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    Re: Colourful Descaling

    Will do. Thanks for the help. Ill let you know how it goes. :)

  8. #8
    Mal Dimal's Avatar
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    Re: Colourful Descaling

    Behmor Brazen - $249 - Free Freight
    Quote Originally Posted by 4D515D5D5B4C4D4A4B575B3E0 link=1298929560/6#6 date=1298975620
    Will do.* Thanks for the help.* Ill let you know how it goes. :)
    No worries mate.... ;)

    A bit more info about descaling here... http://coffeesnobs.com.au/YaBB.pl?num=1245413520/#15

    Mal.



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