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Advice reg Breville BES870 Barista Express

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  • ^^^


    It's very hard to measure volume by sight. If you want this degree of accuracy you'll be better off weighing your shot. I don't bother with the automatic settings I weigh my beans and operate the machine manually and stop when the shot starts to blond. As ever let your taste buds be the judge.

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    • Grind Amount Too Large:

      The O.P. was referring to a grind amount that was way too large; I have the same problem. We have 3 machines: two at work, one at home. Two of the machines have an effective Grind Amount knob. On the 3rd machine, the lowest setting (11 o'clock with Single Cup selected) produces about 90% of the volume of a double shot. The other machines at the same settings, same grind size, same beans, produce a small volume for a single basket at 11 o'clock, with a great single dialed in closer to 12 o'clock.

      All "Grind Amount" settings on the bad machine are way too large. The obvious variable is that this machine continues grinding nearly twice as long as the good machines, all else equal.

      My first assumption was that the potentiometer behind the Grind Amount knob was shot. I've replaced the entire left PCB assembly (1875724: Loc 13.1 in https://spares.bigwarehouse.com.au/i...909a7c6bd0.pdf) based on that assumption. It made no difference at all, with the machine still grinding too long and producing precisely the same volume as before.

      Is anyone aware if there's a fine adjustment pot on the main PCB, or any other in-line adjustment with the Grind Amount pot? Alternatively, like there's user programming for the water-run of each cup size, is there a comparable method to set min/max grind durations?
      Last edited by ConfusedBrevilleUser; 25 October 2018, 07:00 PM.

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