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Thread: Dose adjustment - La Cimbali Jnr - Is is possible???

  1. #1
    Join Date
    Jul 2008

    Dose adjustment - La Cimbali Jnr - Is is possible???

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Hi All,
    I am trying to get used to my recently purchased La Cimbali Junior but can't for the life of me work out how to adjust the shot dosage.
    Any ideas anyone?
    I am starting to think it is probably pre set in the PC board and not actually adjustable.
    Any ideas, hints (instructions), or confirmation of my fears that it can't be adjusted, would be greatly appreciated.
    Kind regards.
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  2. #2
    Senior Member
    Join Date
    Aug 2010
    I worked on one of those a few months back, if it's the same inside as the one I worked on it has a rather unusual mechanism for regulating the shot dosage. If you open it up and see a clear plastic water tank in the back left corner with a large number of level probes inside it, then it's the same. The way it seems to work is that it fills the tank up to the level of the highest probe. Then the rotary switch on the front selects the dose you want, which selects the appropriate probe (presumably the bigger the shot, the lower the probe sits). Hit the shot button and the control box activates the pump and the group solenoid until the control box senses the water level has dropped below the relevant probe.
    Adjusting the shot volumes would presumably involve a bit of trial and error to determine which probe corresponds to which position of the switch (should be able to check that by carefully running the machine with the panels off and watching which probe seems to trigger the shot to end at each switch position) then adjust the volumes by adjusting the heights of the probes.
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  3. #3
    Join Date
    Jul 2008
    Thanks MorganGT. Your a champ!
    That makes complete sense.
    I wondered why there were so many probes in the tank!!!
    I will try it tonight.

  4. #4
    Join Date
    Jul 2008
    All good!
    It didn't take long to figure out which probe was for where.
    Very happy, thanks

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