Hi everyone, I am posting this FYI and perhaps somebody has already experienced this problem or can help out.
I was grinding some beans on my BCG800 / BES900 combo today, which I am very happy with by the way, and the grinder started making a clicking noise and it was evident it had jammed. I removed the hopper and noted a small piece of metal that looks like a piece of broken machinery that somehow got into the beans between the tree and being bagged. It was smaller than the beans and didn’t do any visible damage to the burr surface which was a relief. I’m guessing there is some sort of release mechanism in the motor to help protect jammed burrs. The problem now is I suspect the calibration has been whacked. Firstly I cannot adjust the dose grind all the way to the bottom of the coarse range, stopping about 8 marks from the coarsest mark. Additionally when adjusting to a fine grind, I note that there are still about 8 clicks of adjustment after the marker reaches the finest setting. The problem is, at the finest setting (and even with the adjusting knob at its rotational limit) I notice a coarse grind that despite maximal tamping pulls a 7-10s shot. Since I have had this machine I have routinely ground on the finer end of the scale (4th mark from the right) with moderate tamping force and dose volume set at –3 on a single shot basket and consistently got a 28-34s shot. Despite overloading the basket now and tamping as hard as I can on the finest I can adjust the grind size I cannot get anything other than short fast shot. I emphasise that the burrs look fine on close inspection, so there doesn’t appear to be a problem with them from my humble view.
My question is, does the grinder need adjusting /recalibration (above and beyong shimming) because the adjustment dial is now not synchronous with grind marks. And has anybody heard of similar happening previously. In this case, are there service centres in Brisbane that I can take the machine to?
I was grinding some beans on my BCG800 / BES900 combo today, which I am very happy with by the way, and the grinder started making a clicking noise and it was evident it had jammed. I removed the hopper and noted a small piece of metal that looks like a piece of broken machinery that somehow got into the beans between the tree and being bagged. It was smaller than the beans and didn’t do any visible damage to the burr surface which was a relief. I’m guessing there is some sort of release mechanism in the motor to help protect jammed burrs. The problem now is I suspect the calibration has been whacked. Firstly I cannot adjust the dose grind all the way to the bottom of the coarse range, stopping about 8 marks from the coarsest mark. Additionally when adjusting to a fine grind, I note that there are still about 8 clicks of adjustment after the marker reaches the finest setting. The problem is, at the finest setting (and even with the adjusting knob at its rotational limit) I notice a coarse grind that despite maximal tamping pulls a 7-10s shot. Since I have had this machine I have routinely ground on the finer end of the scale (4th mark from the right) with moderate tamping force and dose volume set at –3 on a single shot basket and consistently got a 28-34s shot. Despite overloading the basket now and tamping as hard as I can on the finest I can adjust the grind size I cannot get anything other than short fast shot. I emphasise that the burrs look fine on close inspection, so there doesn’t appear to be a problem with them from my humble view.
My question is, does the grinder need adjusting /recalibration (above and beyong shimming) because the adjustment dial is now not synchronous with grind marks. And has anybody heard of similar happening previously. In this case, are there service centres in Brisbane that I can take the machine to?

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