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Rocket Giotto tar buildup

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  • Rocket Giotto tar buildup

    I've had my Giotto 2 years now and am very happy with it. I've scrupulously backwashed it monthly with espresso machine detergent as per the manual.
    When the group head started leaking I decided it was time to replace the gasket.
    I was astonished when I removed the filter and gasket to discover a layer of tar, for lack of a better description, several millimetres thick blocking most of the holes at the back of the filter. Despite soaking it in boiling detergent, it required the use of a flat bladed screwdriver to remove it. I then spent the best part of an hour with wooden skewers and toothpicks to unblock the holes.
    Long story short: If you have one of these machines. or a machine with a similar head, periodically remove the seal and clean the back of the filter, as monthly backwashing with detergent does not remove it.

  • #2
    Originally posted by PawneePilot View Post
    Long story short: If you have one of these machines. or a machine with a similar head, periodically remove the seal and clean the back of the filter, as monthly backwashing with detergent does not remove it.
    That's why we recommend a daily water backflush and weekly chemical backflush

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    • #3
      Originally posted by Talk_Coffee View Post
      That's why we recommend a daily water backflush and weekly chemical backflush
      As in what type of chemical?

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      • #4
        Originally posted by PawneePilot View Post
        As in what type of chemical?
        As in backflush detergent such as Clean machine or Cafetto- to name a couple.

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        • #5
          Second the above routine - I have a Diadema Reale (very similar machine) which I water back flush after basically every shot, and detergent clean about once a week/fortnight. My first group seal change only needed to be done after 5 years - and when the screen came out with the old seal it was pristine behind it

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          • #6
            Interesting. I have a Giotto of similar age and I have this build up on my filters too. I remove the filter when I clean the machine (roughly every 2 months), soak it in Cafetto and then give it a good scrub. I replace the gasket and filter about annually.

            Talk_Coffee - I am interested in your recommendation that I should be cleaning with Cafetto weekly. My machine gets fairly light use - maybe 10-12 double shots a week. Would you still recommend weekly cleaning? Fortnightly? Monthly?

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            • #7
              Originally posted by LionelHutz View Post
              Interesting. I have a Giotto of similar age and I have this build up on my filters too. I remove the filter when I clean the machine (roughly every 2 months), soak it in Cafetto and then give it a good scrub. I replace the gasket and filter about annually.

              Talk_Coffee - I am interested in your recommendation that I should be cleaning with Cafetto weekly. My machine gets fairly light use - maybe 10-12 double shots a week. Would you still recommend weekly cleaning? Fortnightly? Monthly?
              Weekly- even if you make one coffee that week. Oils build up and become rancid.

              Servicing & maintaining your espresso machine and grinder | Talk Coffee

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