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1 Plug your grinder to the electric socket
2 Turn it on, do you hear sound from the motor?
If you do it is most likely that the gear is damaged
If there is no sound there can be many causes.
It would really help if you knew the manufacturer and type of the grinder.
There is a second switch, similar to the user accuated switch, which is opposite the user accuated switch when viewed from the bottom of the unit. This second switch is controlled by a piece of plastic which fails when the device overheats. I am currently seeking to replace that part on my unit.To fix the problem you will need to replace this part so that the second switch is closed. Both of the two switches on the bottom of the unit must be closed in order for the unit to operate.
It would be easier to pick up the manual in the commercial section under products from bunn.com, rather than me explaining it. You have to loosen the nut on the adjustment wheel, then pull out slightly and turn towards coarse a few numbers, then push back in and turn grinder on and slowly turn toward fine, until the burrs slightly touch, you will hear a little metal on metal, at that point turn the grinder off, back off about slightly, then pull out adjuster and turn it to Turkish and tighten screw.
It is good to repair the switch but it is best to have it replaced. You may be able to repair it but the problem will probably recur. However, you are in the best position to resolve the solution either to repair or replace the switch.
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
rotate the knob to try to get out the upper holder of burr. if it does not rotate than disasemble the knob and the gears(plastic big one is attached to upper holder of grinder, the other is together with knob.
tru to rotate it manualy, with help of extra srews puted in gear holder holes.
when you get it out, carefuly clean it, look for metal parts and stones(wich sometime comes with coffee)
turn on the grinder and attach gently one marker to lower burr during spining. after you stop grinder, look if it is perfect circle marked in burr. if it is not than marked side is higher. you should consider getting it ok by putting adhesive paper under lower burr and check it again.
There are a series of gears between the motor and the shaft. Replacement parts are avaialble ad cafeparts.com under ascaso ibertal grinders. You will need to take the grinder apart to find the problem.
Most Gaggia items use individual wiring pieces rather than specialized plugs. If so, you can make your own by getting some regular zip cord at the hardware store and stripping and tinning each section. If you have to put wiring in, be sure to make any kind of screw terminal tight. If the terminal uses a real screw that the wire goes around, be sure the wire goes clockwise around the screw.
Why do you think the wiring is degraded? These guys make good stuff and it is UL approved which means, among other things, that the wiring should last quite a while without degrading.
Possible that you installed something incorrectly but I don't think so. It sounds like you're not after the right problem. My guess would be that some bean shards got into the motor or some other place. Most of the motors used on these machines are geared down so that they make more torque and lower speed. Thus...the motor itself is actually quite weak. That's why it is jamming.
What I would start with: take the unit apart as much as you can...by taking out the burr, the receiver cup and all that. Turn the unit over and tap it onto a newspaper covered table with some bit of force. Do it a couple of times. That may fix it. If not, you'll have to disassemble it and find the item jamming it up. Be sure the unit is unplugged when handling it. It is possible that some of the screws are non-tamper. You can get the right bits at the hardware store. Be sure to tighten all screws when you're done.