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Mazzer Major dosing everywhere, Robur to the left!

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  • Mazzer Major dosing everywhere, Robur to the left!

    The grinders at work are having all sorts of issues.

    Our primary grinder is a Mazzer Robur and grinds probably 5-7kgs of coffee on a good day.

    During busy periods we make use of the dosing chamber which is approximately set to dispense 16-17 grams of coffee over 3 clicks. Recently we found the chamber to be under dosing except nobody knows how to adjust the dosing chamber. Does anyone have a PDF manual they could send to me?

    On the flip side, during quiet times we like to grind to order. However, I keep finding that the grounds keep landing to the left leaving a very uneven pile of coffee on one side of the basket which makes grooming messy and problematic. I thought this had something to do with the speed at which I dosed, but neither dosing slow or fast seems to fix the problem.

    Our Mazzer Major is a backup grinder I like to use for specialist coffee I buy on the weekend. It grinds exceptionally fast, but when I try to grind to order the grounds come out a lot like a shower and sprinkle all over the group handle. Just like the Robur I seem to be losing a lot of coffee to spillage.

    Any help would be extremely appreciated.

  • #2
    Re: Mazzer Major dosing everywhere, Robur to the left!

    Originally posted by 3C2C204F0 link=1248617591/0#0 date=1248617591
    Recently we found the chamber to be under dosing except nobody knows how to adjust the dosing chamber.
    I believe that the Robur has the same or similar doser to the Kony. There is a finger nut on top of the vanes, in the center of the dosing chamber. Unscrew it and it increases the dose, Tighten to decrease dose, The little bolt on top keeps the nut from coming off.

    To get the grounds to drop more vertically, try Andy Schecters Schectermatic Schnozzola...
    Instructions here:
    http://www.home-barista.com/grinders/how-to-tame-messy-mazzer-doser-t6499.html
    Download the PDF file here:
    http://www.home-barista.com/downloads/shnozz-mazzer.pdf
    - be sure to print it with printer scaling turned OFF.



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    • #3
      Re: Mazzer Major dosing everywhere, Robur to the left!

      the Mini really sprays to the left too - get a Compak or Mahlkonig  

      // and sell the Robur on the WTS forum for $700 - Ill buy it!

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      • #4
        Re: Mazzer Major dosing everywhere, Robur to the left!

        Originally posted by 5F727378627F626F160 link=1248617591/2#2 date=1248665099
        on the WTF forum
        WTF?

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        • #5
          Re: Mazzer Major dosing everywhere, Robur to the left!

          This is just the usual  Mazzer Fling. It can be solved by fitting a device dubbed the "elvinator". I know Espresso Parts North West sell them but I believe the plans on how to make one are readily available  (really just a plastic/card cutout that is attached to the doser).

          Edit: found it. The template can be found here (pdf) and an installation guide here (flicker)

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          • #6
            Re: Mazzer Major dosing everywhere, Robur to the left!

            You can find mods that doesnt require the doser to be taken apart.

            I have seen some that makes use of the two screws meant for the black plastic tamper.

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            • #7
              Re: Mazzer Major dosing everywhere, Robur to the left!

              Or you could just modify the way you dose it. Its doable. Using the Roburs at work it IS possible to dose dropping the grounds into the centre of the portafilter. Just dose fast enough to thwack the grounds to hit the left side and it almost bounces off into the centre. Just know that it is possible to dose it cleanly with NO wasted grounds with the Mazzers. Its not just me either, all our baristas are able to do it, just takes practice.

              And maybe stop fillling up the dosing chamber with grounds and grind on demand :P

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              • #8
                Re: Mazzer Major dosing everywhere, Robur to the left!

                Or if you pull the dosing lever slow enough you can actually get some left drop.

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                • #9
                  Re: Mazzer Major dosing everywhere, Robur to the left!

                  to adjust dose, push down on the star (the metal part that separates the dosing chamber in to "chambers") and turn the big knob in the centre CCW to increase dose and CW to decrease (just like a tap).

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                  • #10
                    Re: Mazzer Major dosing everywhere, Robur to the left!

                    Originally posted by 7B6B67080 link=1248617591/0#0 date=1248617591
                    Our Mazzer Major is a backup grinder I like to use for specialist coffee I buy on the weekend. It grinds exceptionally fast, but when I try to grind to order the grounds come out a lot like a shower and sprinkle all over the group handle. Just like the Robur I seem to be losing a lot of coffee to spillage.
                    Is the major doserless? i have the same proble,, but its for home so not as much of a problem. i am going to change the output tubing to something more suitable, can you post a picture of yours please?

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                    • #11
                      Re: Mazzer Major dosing everywhere, Robur to the left!

                      You could also bend a piece of metal from bunnings + attach via screw-holes to form a deflector for the doser. Might be worth an hour or twos fiddling.

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