1ZPRESSO J-Ultra Coffee Grinder Instruction Manual
- June 14, 2024
- 1ZPRESSO
Table of Contents
1ZPRESSO J-Ultra Coffee Grinder Instruction Manual
Expanded View
User Instructions
- Turn the adjustment dial ring counter-clockwise to find the starting point.
- There are 5 rotations in total, 100 clicks in a single rotation; each click moves the burr by 0.008mm/8 microns
- Refer to the grind setting tutorial post for different brewing methods.
- Put coffee beans in the hopper and turn the handle clockwise to start grinding
- Follow the guide to calibrate the grinder after disassembling and reassembling the grinder.
Note: The grinders were calibrated when manufactured . To prevent the burrs from being stuck, please do not over tighten the adjustment dial. Do not turn the handle should the burrs get stuck; just loosen the dial and press the central shaft down.
Read the guide on the next page or scan the QR code for disassembly.
Website: www.1Zpresso.coffee
YouTube/Youku : 1Zpresso
Disassembly
Warning: Do not loosen the burr ring unit before step 3.
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Turn the adjustment dial ring clockwise by around two rotations, press the burrand remove the knurled thumb nut counter-clockwise
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Remove the upper bearing cap and upper bearing.
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Remove the the burr and central shaft, spring and lower bearing cap.
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Turn the burr ring unit forward (reverse threads). Disassembling the adjustment dial ring is not suggested.
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Do not clean the grinder with water. Cleaning with a brush and blower is recommended.
Warning:
Do not dismantle below parts any further since they were calibrated by tools
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The Burr with Central Shaft
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Burr Ring Unit
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Bearings
Assembly & Calibration
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Turn the burr ring unit backward (reverse threads) to the tightest.
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Turn the adjustment dial ring counter-clockwise toalign the bottom edge of #0 with the top of the scale mark.
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Put the components back e in the right sequence: lower bearing cap (the raised edge side facing upward), spring, shaft and burr.
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Put the upper bearing 8 back from the top
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Put the upper bearing cap back (the concave edge facing upward)
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Press the burr while tightening the knurled thumb nut to complete calibration
Note: The starting point might be different within +10 clicks due to the strength you tighten the nut and dial
Precautions
- Do not clean and wash the grinder with water.
- Do not wipe your grinder with solvents other than water and alcohol
- Keep itin a dry environment in order to extend its lifetime
- Follow the instructions of re-assembly, ensure to place the components into the correct positions.
- Keep the grinder away from children for safety concerns
