1Zpresso – K-Series (K-PRO / K-PLUS) Grinder
User Instructions
Adjusting the grind setting
- Turn the adjustment dial ring clockwise to make the grinds finer and vice versa.
The number (#) on the dial pointer defines whether a finer or coarser grind.
The smaller numbers refer to finer grind, vice versa. - There are 9 numbers, 90 clicks and 2mm in a single rotation and there are 0.022mm/22 microns per click.
- Ensure the grinder is well-calibrated after reassembly of the grinder.
Read the calibration guide below or the calibration tutorial post. - Kindly refer to the grind setting tutorial post for several brewing methods.
Coffee Grinding
- Put the coffee bean into the hopper after removing the handle. The maximum capacity of K-Pro grinder is around 30~35g and K-Plus grinder is around 35g~40g.
- Grind the coffee beans clockwise with the handle attached.
Disassembly
Illustrated with K-Plus grinder
Note: Kindly follow the step-by-step with the tutorial.
- Turn the adjustment dial clockwise to the coarser grind setting as the burr moving down.
- Loosen the knurled thumb nut counter-clockwise while pushing the burr and take out the upper bearing cap and the upper bearing.
- Take out the shaft, burr, lower bearing cover and spring.
- 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.
Assemble
- Turn the adjustment dial counter-clockwise to the tightest position. Be sure to do not overtighten and stop when you feel resistance.
- Turn the adjustment dial clockwise to the coarser grind setting.
- Turn the burr ring unit counter-clockwise to the tightest position. Be sure to do not overtighten and stop when you feel resistance.
- Put the components back in the right sequence: lower bearing cap (the convex side facing upward), spring, shaft and burr.
- Put the components back in the right sequence while pressing the burr: upper bearing, upper bearing cap (the concave edge of the cap facing upward and ensure insert the upper bearing cap with correct direction).
- Turn the knurled thumb nut clockwise while pushing the burr and stop when you feel resistance.
- Turn the adjustment dial to the zero setting and observe its number (#) whether on the #0.
Read the calibration guide below if not pointing at the #0.
Warning:
Do not attempt to disassemble or remove the following components:
The central shaft and the burr
The burr ring unit and the outer burr
The adjustment dial ring
The bearings
Calibrating the Adjustment Dial
- You would need to either loosing or tightening the knurled thumb nut or the adjustment dial to perform calibrating the grinder.
- It is common for the starting point of the adjustment dial to be around two or more clicks away due to the strength level of securing the knurled thumb nut.
Instructions
- Kindly ensure the steps are in order for calibrating.
- Turn adjustment dial ring counter-clockwise to the zero/tightest settings.
- Ensure the central shaft is not loose nor install incorrectly.
- The grinder is well-calibrated if the dot is at #0 when the adjustment dial ring is in its tightest position.
Read the following step for calibration if you don’t get the #0 on the zero settings.
- The Red dot is pointing in the right direction instead of #0. Remember the click between the “0” and the Red dot.
Turn the adjustment dial ring clockwise to a coarser setting as the gap inside the adjustment dial ring enlarges.
- Gently pressing the burr while loosening the knurled thumb nut counter-clockwise by the number of the click divided two.
Turn/retighten the adjustment dial ring counter-clockwise to its zero settings and observe the number (#) pointing at. - Repeat this step or the next step if you failed to attempt the calibration.
- The Red dot is pointing in the left direction instead of #0. Remember the click between the “0” and the Red dot.
Turn the adjustment dial ring counter-clockwise to a coarser setting as the gap inside the adjustment dial ring enlarges.
- Gently pressing the burr while loosening the knurled thumb nut clockwise by the number of the click.
Turn/retighten the adjustment dial ring counter-clockwise to its zero settings and observe the number (#) pointing at.
- Repeat this step or the previous step if you failed to attempt the calibration.
Precautions
- Do not clean and wash the grinder with water.
- Keep it in 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.
