How to Clean the Precision Device: Ceramic Burr Care Guide

The Precision Device is a cordless ceramic conical burr grinder. Fresh grounds cling to the burr and the cup, and a coated burr grinds slower and coarser than it should. Ten seconds of care after each grind keeps it sharp. Here is the routine, plus how to clear a jam and what never to do.

Quick map of the parts: the button sits on top of the motor head. Below it is the clear chamber, where the ceramic burr (the ring of teeth that does the grinding) sits above the knurled silver adjustment ring. The clear cup screws onto the bottom and catches the grounds.

After each grind

1. Power down. Make sure the Device is off and not on charge.
2. Empty the cup. Unscrew the clear cup at the bottom, tip it out and wipe it dry. The cup is the only part that can go under the tap. Dry it fully before it goes back on.
3. Brush the burr dry. It sits in the clear chamber just above the knurled ring. A GoBlow Brush or a clean dry toothbrush gets between the teeth. Then hold the Device upside down over a bin and tap it to shake the last of it loose.
4. Pick the tight spots. For the grooves between the teeth and the gap around the base of the burr, use a metal pick, a pin or a straightened paperclip. Ceramic is harder than steel, so the pick will not mark the burr. Keep it off the plastic around it.

If the burr jams

A jam is almost always a packed cup or an oversized bean wedged at the burr. Clear it like this:

1. Unscrew the cup and empty it.
2. Turn the Device upside down and tap the motor head with your palm until the loose material drops out of the chamber.
3. Pick out anything still wedged against the burr, then brush.
4. Screw the cup back on, hold the button for two seconds, and let it run clear before you reload.

If it still will not turn, stop. Do not force the adjustment ring. Email hello@goblow.com.au with a photo of the chamber.

Dry input only

The Device is built for dry, roasted beans. Oily or sticky beans gum up the burr fast and take more cleaning. Anything damp, frozen or flavoured with syrup stays out of the chamber. Water and a motor do not mix, and that goes for what you grind as much as how you wash it.

Never do this

• No water in the top section. The motor and batteries live in the head. Never rinse the chamber and never submerge the Device. The cup is the only part that gets wet.
• No rice. The old rice trick chips ceramic burrs. Dry brush and pick only.
• No dishwasher, for any part.
• No solvents poured in. For residue the brush cannot shift, put a few drops of isopropyl alcohol on the brush or a cloth, wipe, and let it air dry completely before the next grind.

Deeper clean

If the chamber needs more than a brush and pick can give it, do not pull the burr assembly apart on your own. Send a photo of what is stuck and where to hello@goblow.com.au.

Stock up on brushes

The GoBlow Brush 5-pack is sized for the chamber and the pendant bore both. Keep one with the Device and one in the kitchen drawer.

Something still stuck? Reply to your order email or write to hello@goblow.com.au. Photos help.