1ZPRESSO J-Ultra Coffee Grinder Instruction Manual

1ZPRESSO J-Ultra Coffee Grinder Instruction Manual

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User Instructions

1. Turn the adjustment dial ring counter-clockwise to find the starting point.
2. There are 5 rotations in total, 100 clicks in a single rotation; each click moves the burr by 0.008mm/8 microns
3. Refer to the grind setting tutorial post for different brewing methods.
4. Put coffee beans in the hopper and turn the handle clockwise to start grinding
5. 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.

1. Turn the adjustment dial ring clockwise by around two rotations, press the burrand remove the knurled thumb nut counter-clockwise
   

2. Remove the upper bearing cap and upper bearing.
   

3. Remove the the burr and central shaft, spring and lower bearing cap.
   

4. Turn the burr ring unit forward (reverse threads). Disassembling the adjustment dial ring is not suggested.

5. 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

• The Burr with Central Shaft

• Burr Ring Unit

• Bearings
  

Assembly & Calibration

1. Turn the burr ring unit backward (reverse threads) to the tightest.
   

2. Turn the adjustment dial  ring counter-clockwise toalign the bottom edge of #0 with the top of the scale mark.
   

3. Put the components back e in the right sequence: lower bearing cap (the raised edge side facing upward), spring, shaft and burr.
   

4. Put the upper bearing 8 back from the top

5. Put the upper bearing cap back (the concave edge facing upward)
   

6. 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

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