Motor revs fine, but grinder burr does not engage, draw beans down, and grind them. It worked fine for many years. I ground cleaning beans through the machine and then it stopped engaging -- or engaging regularly. Occasionally it will engage, turn the burr momentarily and then stop.
I am what you would call an expert when it comes to Baratza repairs.
The problem you are describing is not an unusual one. It sounds like
the main drive gear has been stripped due to something foreign (likely
a stone) sneaking into your grinder with the beans. It would have
jammed the burrs, and because of the powerful torque from the motor,
the drive gear has been stripped so it will no longer (or rarely)
engage the burrs.
To solve this problem you will need to contact COAG Ltd (if you live in
Canada) or Baratza if you are from the US. If you machine is still
under warranty (less than a year old) this repair will be free of
charge and you shouldn't be parted from your grinder for long.
I hope this helps anyone who stumbles upon this and finds themselves with the same problem.
877 477 3849
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If using Beans; it is set to fine and due to static it sticks - OR you have a blockage..
If you are putting ground coffee into a grinder; the static will be a bigger issue and in addition there is no weight from the beans to press the grinds into the burrs. A bean grinder is not ment to grind beans that have already been ground.
Get a better grinder and do not buy supermarket beans.
you must screw off the burr holder plate screw (in center) you will order one special screw, drill shaped, when the burrs roll it will mix and take down the coffee beans. That is solution i applied to many grinders.
PS: beware the direction of burrs must be coordinated with new screw.
I would suspect a log in the outlet shute where it goes into the grinds hopper. Clean it out and then turn the hopper to the coarsest setting to clean it out all together. Coarse grinds are a very good cleaner.
Lets do this, remove the bean hopper, and make sure there are no beans in the burr chamber. Then looking down at the collar with the numbers back up screw if there is one on it. Now if memory serves me right clockwise is coarse and counter is fine. Look down in the burr chamber, notice the nut in the middle, turn it with your fingers that will move the bottom burr, if burr turns freely we will move on if not plug in grinder and let it grind out remaining beans. With beans gone unplug grinder, then turn collar towards fine until you cannot go no more, now try turning nut it will be hard if not impossible to move, turn collar towards coarse until you can barely move bottom burr with fingers, you will hear and feel the burrs touching, that will be our bottom setting. Now pick a spot on the grinder you can use the small notch in the middle, count out 16 notches towards coarse and turn collar to that point. Use the notches around the collar not the ones on the top next to the numbers. Your grind should be almost perfect, depending on blend and machine you might have to adjust 1 notch to the left or right after testing.
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.
Your burr is not locked in. You need to remove the beans from the hopper. Remove the hopper. Remove the burr. Turn the grinder upside down over the trash can. Put the burr back in only make sure that the burr is down. Install the bean hopper and when you turn the bean hopper it should move the burr. Then you can adjust your grind. Make sure that the grinder is running is your going to a finer grind or you could break the grinder. You can turn it to a coarse grind any time.
Rotate the bean hopper counter clockwise until it stops. Lift it off. Remove the outer burr with the 2 wings and clean under the burr. Clean the opening going to the chute for ground coffee(inside where the burr was). Install the outer burr. Install the bean hopper. Rotate the bean hopper to the French press grind (coarsest) and operate the grinder. This will clean the burrs and the passages. If it starts to clog, repeat the last part to clean the burrs and passage. It must be grinding to go to a finer setting, but you can go to a coarser setting any time. Another thing. Turn the grinder upside down (empty) and rotate the bean hopper back and forth to clean the threads of the adjusting burr..
This fixes almost all the "beans will not feed or beans will not grind"
problems caused by coffee bean dust packed in the burrs. Oily beans
cause this problem more fequently.
a. Pour all the beans out the top.
b. Open the settings up all the way and see what else can be poured
out. Use your shop vacuum to **** grounds out the spout and backward
out the bean bin.
c. Pour in some instant rice and start grinding. Reduce the grind to
a small setting like six and then open the settings all the way again.
(The grinder will not start at a low setting with the rice in it. If
you let it stop, open the settings to about 16 before trying to
d. Pour out the rice and vacuum out the ground rice.
e. Adjust the grinder to your favorite setting and try a coffee grind.
Grind until most of the rice dust is expelled (any remaining trace of
rice dust will not affect the flavor of the coffee).