How to Clean and Reassemble a 1Zpresso X-Ultra

Which 1Zpresso X-Ultra parts come apart for cleaning

The 1Zpresso X-Ultra product page says the grinder disassembles without tools and without losing calibration. The X-Ultra manual names the parts that come out during disassembly:

• the burr and central shaft (the inner burr assembly)
• the spring
• the lower bearing cap
• the knurled thumb nut
• the burr ring unit, which uses reverse threads

The 1Zpresso X-Ultra adjustment dial ring stays on the grinder during this procedure; it is only turned, not removed, unless zero needs realigning.

How to disassemble the 1Zpresso X-Ultra

The 1Zpresso X-Ultra manual warns not to loosen the burr ring unit before step 5, then lists this sequence:

1. Turn the X-Ultra adjustment dial ring clockwise by around two and a half rotations.
2. Press the inner burr.
3. Turn the knurled thumb nut by one angle beside the dot.
4. Remove the burr and central shaft, the spring and the lower bearing cap.
5. Remove the knurled thumb nut.
6. Turn the burr ring unit forward to remove it; the X-Ultra burr ring unit has reverse threads.

Lay the X-Ultra parts on a dry cloth in removal order, keeping the lower bearing cap and knurled thumb nut oriented as they came out, because both have a required facing during reassembly.

How to clean 1Zpresso X-Ultra burrs and parts

The 1Zpresso X-Ultra manual sets two limits on cleaning: do not clean and wash the grinder with water, and do not wipe it with solvents other than water and alcohol. In practice that means dry cleaning the X-Ultra:

• Brush retained grounds and fines out of the inner burr teeth, the outer burr in the burr ring unit, and the grinder body.
• Wipe surfaces with a cloth lightly dampened with water or alcohol only, then let the X-Ultra parts dry fully before rebuilding.
• Check the spring and lower bearing cap for grounds that could stop the burr and central shaft from seating.

The manual does not specify a brush type or cleaning interval for the X-Ultra. For a new X-Ultra, the manual recommends grinding 5 g of beans at an espresso setting three times to clean it before first use. For how often to clean a hand grinder, see grinder cleaning schedules.

How to reassemble the 1Zpresso X-Ultra

The 1Zpresso X-Ultra manual gives this assembly order:

1. Turn the burr ring unit backward (reverse threads) until it is at its tightest.
2. Put the lower bearing cap back with the raised edge facing upward, then the spring, then the burr and central shaft.
3. Put the knurled thumb nut back with the dot facing upward.
4. Press the inner burr.
5. Align the dot on the knurled thumb nut with an angle on the shaft.

The two X-Ultra orientation marks, the raised edge on the lower bearing cap and the dot on the knurled thumb nut, are the details most likely to be reversed during reassembly.

Checking zero on the 1Zpresso X-Ultra after reassembly

After reassembly, the 1Zpresso X-Ultra manual says to turn the adjustment dial ring counterclockwise all the way to the point where resistance starts and confirm the indicator lines up with #0. If the X-Ultra dial does not read #0 there, the manual says to remove the dial ring, realign #0 with the indicator and reinstall it. Once zero is confirmed, count clicks back to your brew setting using the 1Zpresso X-Ultra grind settings and click guide.

1Zpresso X-Ultra cleaning and reassembly FAQ

How do I take apart a 1Zpresso X-Ultra for cleaning?

The 1Zpresso X-Ultra manual says to turn the adjustment dial ring about two and a half rotations clockwise, press the inner burr, turn the knurled thumb nut by one angle beside the dot, then lift out the burr and central shaft, spring and lower bearing cap. The knurled thumb nut and burr ring unit come off last.

What order do 1Zpresso X-Ultra parts go back in?

The 1Zpresso X-Ultra manual reassembles the grinder as: burr ring unit tightened, lower bearing cap with the raised edge up, spring, burr and central shaft, then the knurled thumb nut with the dot facing up, aligned with an angle on the shaft.

Can I wash a 1Zpresso X-Ultra with water?

No. The 1Zpresso X-Ultra manual says not to clean and wash the grinder with water, and not to wipe it with solvents other than water and alcohol.

Does the 1Zpresso X-Ultra lose its zero after cleaning?

1Zpresso says the X-Ultra disassembles without tools and without losing calibration, but the manual still asks you to confirm the dial reads #0 at the point where resistance starts after reassembly.

Sources

• 1Zpresso: User Manual, X-Ultra
• 1Zpresso: X-Ultra Manual Coffee Grinder