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Rancilio MD50 Automatic - taming it for home use (maybe also MD80 ?)

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  • Rancilio MD50 Automatic - taming it for home use (maybe also MD80 ?)

    I have a MD50 Rancilio that I would like to tame a little for home use - I'm not looking for the technical know how about the electronics, but more trying to work out what feature will best answer my needs.

    Its the automatic model, so the behaviour is to switch it on, then either press the momentary switch to start grinding *or* flap the dosing chamber lever 6 times. It has an automatic cutout at the top of the dosing chamber that will stop the grinder when the doser is full - the idea behind all this is to maintain a full doser in a commercial setting (I'd never want that in a commercial setting, let alone at home). Now, this is not a domestic machine - I'd just like to tame it a little bit.

    What would you do if this was yours? Ideally, I'd like to grind ~25grams at a time, then turn off, and be ready to do it again for the next shot. Its fast enough to grind on demand and use the doser as a distribution aid. The problem with the current setup is that I could grind a retail sized bag of coffee automatically without intending to, or, I manually flick the switch on/off till I get the amount I need - interrupted by flapping the doser handle.

    As a bare minimum, i'll probably convert it to a full manual so I only need to operate one power switch on/off rather than a combination of power, toggle, doser, cutout.

  • #2
    I've converted this grinder now to full manual, removing the automatic functions [*1] (but keeping them available for reuse in the future if desired). This allows the grinder to be operated by way of a single power on/off switch. I've also uploaded a wiring diagram to the documentation section.

    [*1]
    triggers for doser cutout, doser refill, power switch, start switch.
    Attached Files

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    • #3
      How to tame it?

      Hi,I also bought a used old rancilio md50 AT, and totally disassembled it for cleaning etc.
      now I removed the little box in the doser that has the auto switch in it, and isolated the two cables.
      i didn't change anything else, but now the grinder won't switch on again.... Help?

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      • #4
        Originally posted by annacoffee View Post
        Hi,I also bought a used old rancilio md50 AT, and totally disassembled it for cleaning etc.
        now I removed the little box in the doser that has the auto switch in it, and isolated the two cables.
        i didn't change anything else, but now the grinder won't switch on again.... Help?
        Did you solve your problem? Is the trick to connect these two wires together?

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        • #5
          Connecting the two wires solved the problem for me.

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          • #6
            Md50 wiring diagram

            Originally posted by axisa View Post
            I've converted this grinder now to full manual, removing the automatic functions [*1] (but keeping them available for reuse in the future if desired). This allows the grinder to be operated by way of a single power on/off switch. I've also uploaded a wiring diagram to the documentation section.

            [*1]
            triggers for doser cutout, doser refill, power switch, start switch.

            I am looking for the wiring diagram you referenced. Do you still have access to it and could you please help me find it. I believe I am making the same changes to my machine.

            Thank you

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