Deep Cleaning Niche Zero: Disassembly Guide

To deep clean a Niche Zero, unplug it, unscrew the bean funnel, lift out the outer burr, then remove the lower burr and sweep arms and clean everything with a brush and a dry cloth. Do not use water on the burrs, and do not run rice or grinder-cleaning tablets through it. Finish by recalibrating, then grind a small dose of beans and throw it away.

The steps below follow the Niche Zero instruction manual and Niche Coffee’s own cleaning guide. Where the two documents differ, this guide says so and points to the more cautious option.

What You Need Before You Start

Niche’s documents name a short list of tools. None of them is a cleaning chemical for the burrs.

• The brush supplied with the grinder, or another soft brush if that one has gone missing.
• A soft toothbrush for the burr grinding surfaces and the adjustment threads.
• A clean, dry microfibre cloth, which the manual also suggests wrapping around a finger to clean the grind chute.
• A small handheld vacuum with a small nozzle. Optional, and only after the springs are out.
• Food-safe silicone grease, used very lightly on the adjustment threads.
• Disposable nitrile gloves, which Niche’s guide recommends to protect your hands and to keep skin oils off the grinder.
• Clear, dry workspace with room for the parts you take out.

Important Safety Notes

The manual’s cleaning pages all carry the same warning: make sure the grinder is off and unplugged. Its safeguards section also says to disconnect the grinder before assembling, disassembling or cleaning it, and to unplug it by holding the plug rather than pulling the cord.

Three more points from the manual matter during a deep clean:

• The burrs are extremely sharp. Take extra care when you lift them out of the body and avoid touching the sharp edges.
• Do not immerse any part of the Niche Zero in water, and never immerse the burrs or burr-shaft assembly.
• Do not put the grinder or any of its parts in the dishwasher.

Photographing the grinder before and during disassembly is a simple way to remember where each part sits when you put it back together.

Step-by-Step Niche Zero Disassembly

1. Remove the Bean Funnel

Unscrew the bean funnel anticlockwise. The manual says about 5 turns, until it comes loose, then lift it off. Unscrewing the funnel is also how the grind setting moves coarser, so the number you had before cleaning will not survive this step. Write it down first.

2. Remove the Burrs

The two Niche documents describe this step differently, so follow the one that matches the parts on your grinder.

Following the 2018 manual: with the funnel off, remove the outer burr, holding it away from its cutting edges. Under it sit 2 small springs; the manual says to remove them only if you plan to vacuum, so they do not get lost up the nozzle. For a deep clean, the manual then goes one stage further than the routine clean: remove the lower burr and the sweep arms. When you refit the lower burr later, the manual says the nut on top of it should be hand tight only.

Following Niche Coffee’s online guide: first use the hex driver supplied with the grinder to unscrew the central bolt, and remove the lock washer and the NFC disc. Only then take out the upper burr, lower burr and sweeper. The springs in the burr housing can be removed too if you plan to vacuum.

3. Access the Lower Burr Chamber

With the burrs and sweep arms out, the chamber floor is open for cleaning. If the parts on your grinder do not match either description above, follow the instructions that came with your unit rather than forcing anything.

Cleaning Each Component

The Burrs

The manual’s suggestion for the burrs is a soft toothbrush worked around the grinding surfaces. Niche’s online guide adds a brush, a vacuum and a wipe with a clean, dry cloth, and it says to keep the burrs away from any moisture or water.

That is why this guide does not use alcohol, soap or a rinse on the burrs. Niche’s guide says plainly that the grinder only needs a brush and a clean cloth, and that water can cause corrosion if it is not properly dried. Food-safe cleaning wipes appear in its tool list for a quick extra clean, with the instruction to keep them away from the burrs.

The Grind Chamber and Sweep Arms

Brush loose grounds out of the chamber first. If you use a vacuum, the manual says to use the small nozzle around the chamber with the springs removed from the grind adjuster area. Niche’s guide adds a practical warning: make sure the nozzle itself is perfectly clean before it goes near the grinder.

Here the two documents differ. The 2018 manual says to use a dampened soft microfibre cloth on the sweep arms and chamber floor. Niche’s online guide says to finish the chamber with a clean, dry cloth and never to wipe the inside with a damp cloth. These instructions conflict, and this article follows the online guide’s dry cloth for the inside of the grinder. If you follow the manual instead and use a dampened cloth on the sweep arms and chamber floor, make sure everything is completely dry before reassembly.

The Grind Chute and Grind Cup

Push the supplied brush up the grind chute and twist it, which is the manual’s method for the chute. For a deep clean, it also suggests wrapping a soft microfibre cloth around a finger and cleaning the dispensing chute as high as you can reach.

The grind cup is the one part the manual says can be washed with hot soapy water, while Niche’s online guide says there is never a need to wash anything in the sink. If you wash the cup, dry it fully before it goes back under the chute.

The Adjustment Threads

Clean the adjustment threads with a dry toothbrush, then lubricate them very lightly with food-safe silicone grease, as the manual describes.

The Outside: Housing, Bean Funnel and Wooden Parts

For the exterior, the manual says to wipe the motor housing, power cord and lid with a clean damp cloth and then dry them with a soft microfibre cloth. It also rules out abrasive cleaners and scouring pads, and repeats that no part should be immersed in water.

Reassembly and Recalibration

Putting the Parts Back

Niche’s online guide gives the order for reassembly: springs, sweeper, lower burr, top burr, lock washer, NFC disc, and finally the central bolt. On the nut-style design in the manual, refit the lower burr’s nut hand tight only. The manual warns against over tightening it.

Before screwing the funnel back on, look into the chamber one more time for a stray tool, bristle or cloth fibre.

Restoring Your Calibration

Niche’s guide recommends recalibrating after cleaning. The manual’s procedure is:

1. Screw the bean funnel clockwise until it is finger tight, which the manual puts at about 4 complete turns. Do not overtighten.
2. Find the grind size indicator, the small white dot on the black bezel, and check that it lines up with the calibrate mark on top of the grinder.
3. If it does not line up, move only the black bezel until the white dot sits on the calibrate mark. The grinder is now recalibrated.
4. Unscrew the bean funnel anticlockwise back to your chosen grind setting.

Do not grind at the calibrate position. At that point the burrs are touching, and the manual warns that using the grinder there will damage them. The manual says the grinder leaves the factory calibrated and adjusted to setting 20, and Niche’s guide recommends 20 as the setting to turn back to.

First Grind After Cleaning

After a deep clean, the manual says to run 18 g of coffee beans through the grinder and discard the grounds. It also notes that for the first few uses after cleaning, some coffee will stay inside the grinder, so you may see slightly more retention than usual until it settles.

If the grind still seems wrong for the setting you chose, the manual’s troubleshooting page points first to calibration. For espresso, once calibration checks out, the fast-shot troubleshooting guide covers adjusting grind one step at a time.

How Often Should You Deep Clean Your Niche Zero?

Niche’s two documents give different intervals, and both are framed as depending on use.

Source	Who it applies to	Deep-clean interval
Niche Zero manual (2018)	All users, depending on use	Every 3–6 months
Niche Coffee cleaning guide	Standard home users	Every 2–3 months
Niche Coffee cleaning guide	Households averaging more than three cups a day	About once a month
Niche Coffee cleaning guide	Mostly dark roasts	More often than the standard interval

Niche explains the dark-roast point by bean type: light roasts are drier and leave less residue, while dark roasts are oilier and build up more quickly. Its guide also gives two signs that a clean is due before the calendar says so: coffee starting to taste flat or stale, and a grind that feels less consistent than usual.

Between deep cleans, the habit Niche suggests is a daily brush to sweep away loose grounds, so nothing is left to go stale on the burrs.

What Not to Use on a Niche Zero

• Rice or grinder-cleaning tablets. The manual says it does not recommend running rice or any specialist cleaning products through the grinder, because this may damage the burrs and the grinder is not designed to be cleaned that way.
• Water on internal parts. No immersion, no sink, and no dishwasher for any part, including the grind cup. The one exception the manual names is washing the grind cup by hand in hot soapy water.
• Abrasive cleaners or scouring pads. Ruled out in the manual’s care section.
• Anything other than whole roasted beans. The manual’s safeguards say the grinder is designed only for whole roasted coffee beans, not herbs, spices or pre-ground coffee.

Frequently Asked Questions

Can I use grinder cleaning tablets in the Niche Zero?

No. Niche’s guide answers this directly: the grinder only needs a brush and a clean cloth, with no cleaning products. The manual adds that rice and specialist cleaning products may damage the burrs.

Is it safe to wash the burrs with water?

No. The manual says never to immerse the burrs or burr-shaft assembly in water, and Niche’s guide says water can cause corrosion if it is not properly dried. Brush them and wipe them with a dry cloth instead.

How long does a deep clean take?

Niche’s guide says that once you are used to the process, a full clean takes less than 10 minutes.

Do I need to recalibrate after cleaning?

The manual says recalibration after cleaning is needed only if required, while Niche’s online guide recommends always doing it. Because the calibration check takes a few turns of the funnel, doing it every time is the simpler habit.

Why is there more retention right after cleaning?

The manual expects it: for the first few uses after cleaning, some coffee will remain in the grinder and you may notice slightly higher retention. Grinding and discarding 18 g of beans after the deep clean is the manual’s way of dealing with this.

The grinder runs but nothing comes out. Is cleaning the fix?

It can be. The manual’s troubleshooting page says that when the motor runs but coffee does not grind, the burrs may need cleaning or may be worn, and to check that the grinder is not set to the calibrate position, where the burrs touch.