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if coffee is prepared with fresh grinder bean then it gives ultimate taste to coofee with perfect aroma. Some top-range bean to cup models have integrated bean grinders to do this for you, or you can buy a separate grinder. If you grind beans yourself, you'll need to choose the extra-fine setting for espresso brewing and make sure you thoroughly clean and maintain your filters, to prevent them getting blocked. Get Complete info about the best coffee best coffee grinder here.
This can be caused by several things;
If it used to be good but is now faulty it is most likely that it just needs cleaning. If you are using beans that are 'oily' they can clog the grinder, you should anyway disassemble it and clean every year. Do not use soap and water, just brush it with a stiff brush (e.g. the stiffest type of toothbrush) and a vacuum cleaner.
There is also a possibility that something has got into the grinder along with the coffee beans that has damaged the grinding wheels; in that case you need to replace the wheels.
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.
It sounds as though your grind is out of adjustment. The grinder is probably set too fine. I have not worked on a G3 grinder but I would think it is like the Bunn G2. On the front knob you will find 2 small set screws and one larger adjustment screw (in the middle of the knob) 1. Set the selector knob to finest setting (Espresso or Turkish) 2. Loosen the 2 set screws about 2 turns. 3. Activate the start switch (you must activate the "bag switch" behind the chute) 4. With the grinder running, SLOWLY turn the center screw clockwise only until you hear a very slight whirring sound (this is the burrs touching). 5. Then, back off the center screw counter-clockwise about 1/8 of a turn, shut off grinder and re-tighten the set screws. Check the grind in the "drip" setting by running a few beans through... the grounds should be about the consistency of sand. You should get a better flow through the machine with the grind adjusted properly. You may want to check the cleanliness of the hopper in the top... I have seen these dirty enough to impede the falling of the beans to the grinder. Also, whenever you remove (for cleaning) the 2 larger screws that hold on the front "plate", be sure to put them back in evenly... kind of like one would with a wheel on a car- Finger-tight then slightly tighten each on a little at a time (back and forth) until tight. Hope this helps.
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).