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Mazzer Mini Burr Coffee Grinder Questions & Answers
I've had my Mazzer Mini for about 3 years. I
1 check the supply wire to swich change if it is not ok
2 chek the swich change if it is not ok
3 if it is automatic check microswiches(one where ground coffee comes out and other below doser) clean from coffee upper swich and try. it block sometime from ground coffee
4 check the windings of electromotor give grinder for if it is not ok
5 check condensator change if it is not ok
6 try to spin the burrs by hand, check if they are not blocked. change bearings if it is not ok
if you need to change bearings you need advice how to open the motor.
How to change mazzer luigi srl "major" blades
Start by closing the hopper and grinding all the beans through the unit. Remove the hopper and look for any lock screws on the top of the adjustment collar (or ring). Remove the screws if present and turn the adjustment collar clock-wise (coarser) until it comes off. Pull out the upper burr holder. You then need to take out the three screws that hold on each burr (blades) and remove them. Then you want to use a shop vac to clean out all of the grounds. Make sure there is no coffee on the burr holders that could cause the new burrs to not be level. Assemble the new burrs on to the holders. Take a dry towel and clean the threads of the collar and the threads inside the mill. You don't want any coffee grounds on the threads, that could cause the adjustment collar to lock up and may damage the threads which can be extremely expensive. Use a small amount of lithium grease on the threads and reassemble. Screw the adjustment collar all the way down to where the burrs are touching. Then back it up 1.5 numbers (12-14 little bumps on the outer edge of the collar). This is a good "starting point". Pull some shots and adjust as needed.
good luck
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Burrs spin but no grinding
Try this, remove the bean hopper, and vac out the burr chamber, then put 1 tablespoon white rice in the burr chamber and cover with hand and turn grinder on, if the rice grinds, then your grind might have been set too fine. Turn the grinder towards fine until you can barely turn the burr nut, you will feel them touching, then turn course about 16 notches (do not use numbers, use the small notches around the rim), that should give you a great starting point for your grind.
Grinder grinds but when I try to dose it won't
Doser lever failed. I diassembled the doser housing (three screws in the base) and found the return spring had fractured. I did not have any spring steel (such as a piece of clock spring) so I found it possible to cut a piece out of an old feeler gauge (38 thou) using tinsnips. I cut to the correct length and glued into the plastic housing as originally -just saved myself $100 and more importantly to me, all the pain of getting the grind setting correct on a replacement grinder
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