User Manual - K-Ultra

1Zpresso K-Ultra grinder
1Zpresso K-Ultra grinder

⚠ Do not wash or soak this product for cleaning

Table of Contents

User Instructions

  1. Turn the adjustment dial ring to dial into your preferred grind settings. The dial pointer indicates the grind setting; the bigger the number, the coarser the grind size. 
  2. There are 100 clicks in an entire rotation with a maximum total of 1.5 rotations. Each rotation moves the burr by 2mm, and each click moves the burr by 0.2mm / 20 microns.
  3. After reassembling the grinder, ensure the adjustment dial ring is calibrated correctly according to the calibration guide below or the tutorial from the blog.
  4. Refer to the grind setting tutorial post for different brewing methods.
  5. Pour the bean into the hopper from the top and turn the handle clockwise to start grinding. 
1Zpresso K-Ultra grinder

Foldable Handle

How to fold?

1Zpresso K-Ultra grinder
  • Hold the crank part near the wooden knob and push it upward.
1Zpresso K-Ultra grinder
  • Turn the handle clockwise all the way to fold.

How to extend?

1Zpresso K-Ultra grinder
  • Hold the crank part near the wooden knob and push it upward.
1Zpresso K-Ultra grinder
  • Turn the handle counter-clockwise all the way to extend.

Diassembly

Note: Please follow the tutorial step by step.
1Zpresso K-Ultra grinder
  • Turn the adjustment dial clockwise to coarser grind settings as the burrs open up.
1Zpresso K-Ultra grinder
  • Loosen the knurled thumb nut counter-clockwise while pushing the burr and take out the upper bearing cap and the upper bearing.
1Zpresso K-Ultra grinder
  • Take out the shaft, burr, lower bearing cover and spring.
1Zpresso K-Ultra grinder
  • Remove the burr ring unit and the adjustment dial clockwise from the grinder. 

  • Clean each of the parts with a brush and an air blower. 

Assembly

1Zpresso K-Ultra grinder
  • Turn the adjustment dial counter-clockwise to the tightest postion. Do not overtighten it and stop when you feel resistance.
  • Turn the adjustment dial clockwise to coarser grind settings. 
1Zpresso K-Ultra grinder
  • Turn the burr ring unit counter-clockwise to the tightest position. Do not overtighten it and stop when you feel resistance. 
1Zpresso K-Ultra grinder
  • Put the components back in the right sequence: lower bearing cap (the raised edge side facing upward), spring, shaft and burr
1Zpresso K-Ultra grinder
  • Put the parts back in the right sequence while pressing the burr: upper bearing, upper bearing cap (the concave edge of the cap facing upward and ensure to put the upper bearing cap in the correct direction).
1Zpresso K-Ultra grinder
  • Turn the knurled thumb nut clockwise while pushing the burr and stop when you feel resistance. 
  • Turn the adjustment dial to the zero settting and see if the indicator aligns with #0.
    Read the calibration guide below if it is not aligned with #0. 
Warning: DO NOT further disassemble or remove the following components:
1Zpresso K-Ultra grinder
Central shaft and inner / conical burr
1Zpresso K-Ultra grinder
The burr ring unit and outer burr
1Zpresso K-Ultra grinder
The adjustment dial ring
1Zpresso K-Ultra grinder
The bearings attached to the uppershaft chamber

Adjustment Dial Calibration

  1. You would need to either loosen or tighten the knurled thumb nut or the adjustment dial to calibrate the grinder. 
  2. It is common for the zero point of the adjustment dial to be around two or more clicks away due to the strength you use to tighten the knurled thumb nut.

Instructions

1Zpresso K-Ultra grinder
  • Ensure to calibrate the grinder step by step:
     
    • Turn the adjustment dial ring counter-clockwise to the zero / tightest settings.
    • Ensure the central shaft is not loose nor installed incorrectly.
    • The grinder is well-calibrated if the dot is at #0 when the adjustment dial ring is at its tightest position.

Read the following steps for calibration if you don’t get #0 for the zero setting. 

1Zpresso K-Ultra grinder
  • If the Dial Pointer is pointing at the right side of #0:

    • Turn the adjustment dial ring clockwise to a coarser setting as the gap inside the adjustment dial ring enlarges. 
    • Loosen the knurled thumb nut counter-clockwise a little bit while pressing the burr from the bottom. Turn the adjustment dial ring counter-clockwise back to its zero settings and see what number (#) the dial pointer points at.
    • Repeat this step or the next step until the grinder is calibrated. 
  • If the Dial Pointer is pointing at the left side of #0:
     
    • Turn the adjustment dial ring counter-clockwise to a coarser setting as the gap inside the adjustment dial ring enlarges. 
    • Tighten the knurled thumb nut clockwise a little bit while pressing the burr from the bottom. Turn the adjustment dial ring counter-clockwise back to its zero settings and see what number (#) the dial pointer points at.
    • Repeat this step or the step above until the grinder is calibrated. 

Precautions

  • Ensure the grinder is never washed or cleaned with water.
  • Do not wipe your grinder with solvents other than water and alcohol.
  • To ensure longevity, keep the grinder in a dry location.
  • Please follow the instructions properly for disassembly and reassembly, paying attention to the order of parts and their correct position. 
  • This is not a toy. Keep the grinder out of reach of young children to ensure their safety.
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Refunds

(For example: JX $129 + Shipping $10 = Total $139)

If YouYou’ll Receive
Cancel before an item is shippedfull refund (item’s price + shipping)
= $139
Return an item in original condition within 7 calendar days from the date you received it100% of the item’s price
= $129
Return an item in original condition over 7 calendar days from the date you received it80% of the item’s price
= 129*0.8 = $103.2

*Any customs duty or relevant charges incurred will be deducted from the refund. (The table above does not include additional charges.)

 

*A refund request over 7 calendar days from the date you received an item will be refunded partially (80% of the item’s price) and might be denied since the item has been used.