소개
Prerequisite only - This guide is only part of other guides.
Removing the grindstones in grinders of the OEM manufacturer Eugster. (Jura and similar ones e.g. AEG and Siemens, Bosch, Melitta, Nivona, Krups)
필요한 것
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Now the grinder is free. Again take a picture, then pull out the axis of the adjuster with moderate force.
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Depending on the model you will find a silicon sealing on top of the grinder ring, remove it.
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Watch the fabrication signs , here green. This alignment must be restored later. Now turn the great black gear about 90 degrees counterclockwise. The grinder ring is free and can be lifted off.
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The grinding cone is fastened with a long Torx T20 screw. The screw head is often covered with remnants of coffee beans. Expose the head and turn the screw out counterclockwise.
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Now the bean feeder (the small white snail) can be removed. The grinder cone and drive can now also be lifted up carefully.
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The grinder is usually filled with old, sticky coffee grounds. Clean everything carefully for an excellent coffee aroma.
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Gently lift the felt ring around the drive shaft with a needle, then wipe it clean with a damp cloth. Do not attempt to wash it, as there is a risk that it will swell. When first used, turn it over with the clean side up.
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Clean the inside of the grinder with a brush and damp cloth, and the blades with a dishwashing brush. Ensure it is properly dried before use.
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Push both of the small latches alternately. Then the ring cover should come out.
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Two clamps hold the grinder ring in its place, push them aside and it should come free.
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Again clean everything. Press the new ring and cover in its place. With that the grinder ring is exchanged.
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First insert the cleaned driver, then the three sleeves, springs and balls. Now fit the grinding cone on the three balls.
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Then fit the auger, screw in central screws. When screwing in, push the cone downwards and make sure that everything meshes.
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Insert grinding ring. The black gear is turned to the right again until the three marks are aligned. Then reinstall the adjuster drive shaft as it was originally.
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Then install the remaining parts in reverse order.
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You can set the grinding degree nicely by placing an empty roll of toilet paper perpendicular to the open mill and filling it with a few coffee beans. Plug in the plug (be careful!), choose a cup of coffee and watch as the coffee grounds fall out of the grinder.
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These two pictures are no fake: Before repairing the grinder the coffee is thin and transparent. With new stones the coffee is strong and has a fine crema. The repair was a real success!
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Now follow the remaining steps in reverse direction to reassemble your device.
Now follow the remaining steps in reverse direction to reassemble your device.
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댓글 22개
Thank you for the guide. I have FILL BEANS error, I followed this guide. No problem. But with new burrs, I still have FILL BEANS error. Any idea why? My burrs were not so bad. I only have 2000 espressos on the counter.
Which model of Jura is it?
VauWeh -
Z5, first generation
The fame “fill beans” error is that not enough coffee is entering the brewgroup. I have cleaned the grinder and the chute to the brewgroup. Grinder spins fast. But very little coffee actually go down into the grinder. I have watched several youtube videos on grinder calibration. But no idea. If you use the 2 big espresso cup button, then no error because the grinder runs a longer time. But still not enough coffee for 2 large cups. Just no error.
