The engine that drives the large white gear on the brew group up and down keeps running when the gear is all the way down (obviously accompanied by loud rattling noise).
I disassembled and cleaned the brew group, but it makes no difference. What is used to detect when to stop the motor? I don't see any obvious sensor. Is it simply timed.
Any suggestions how to troubleshoot and hopefully repair?
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REF: https://www.jura-parts.com/Jura-A-C-E-F-...
In the description of the ENA Encoder (see reference link above) it says, "The encoder counts the number of revolutions required by the gear motor to compact the coffee. If the correct amount of revolutions is not met, then a "Fill Beans" message may appear. If you are experiencing a problem during this process, then inspect the teeth on the Gear of the Gear motor first. Encoders do fail, but not often."
If there is a problem with the teeth on the gear motor, you can can buy a new gear here: https://www.jura-parts.com/Jura-Impressa.... If however, the teeth are fine, then look to replace the ENA Encoder since it counts the revolutions to stop the compact process.
Here is a parts diagram: https://www.jura-parts.com/v/vspfiles/di...
Here is a circuit diagram: https://www.jura-parts.com/v/vspfiles/di...
Here is a brew group refurbishing video: https://www.youtube.com/watch?v=m1DJ1dzH...
Additionally, I found this company that also sells parts and repair guides: https://shop.partsguru.com/Jura-Capresso...
At the very least give Jura-Parts or Partsguru a call, and they might help you over the phone.
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Thanks for the info. Is there a more readable circuit diagram? Most of the text is not readable a.t.m.
This problem isn’t caused by revolution count,it’s caused by the drive motor mounting breaking at the screw tab, this breakage results in the drive gear loosing traction onto aluminium brew drive gear . The motor simply spins away without effect.
The motor either needs replacement or remounting so it correctly meshes with brew gear. Simply a weak design fault, easy fix is to reinforce the motor mounting with two screw fixtures in place of just the single screw. Once fix this machine is good for another 10000 coffees!
I have the same problem. However, the gear looks fine, the cog wheels are firmly engaged. Question is, at what position should the white drive cog wheel be after a complete dis - and re-assembly ( as needed to replace all seals and o-rings). Any suggestions?
I have the same problem after taking out the brew group cleaning it and reinstalling it. The motor keeps spinning which results in grinding. I took away the motor and it keeps spinning without stopping . It looks like that it receives no stop sein. Is there any solution for this?
I just had this problem. I pulled the motor, unscrewing the two Allen screws. The top mount was cracked. I reinforced it it and added a large washer that I ground down on one side. The motor still would flex and allow the gears to slip. I found that pushing in on the opposite end of the motor stopped the excessive flex and it worked fine. I used a small (5/16”) paddle bit drill and drilled one hole on either side of the rear of the motor. The holes went into the area where the ground bucket is. I checked for clearance and ran a large zip tie through one hole and back through the other one securing it around the motor, cinching it tight. Testing the machine, the motor does not flex as much anymore and it will now run the cycle. The rear of the motor has one fastener that is just a rubber bushing. This is to allow some flex. Time will tell if my repair is successful!
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I have a problem with BREW GROUP THAT HAS NOT BEEN INITIALIZED, before it was very dirty and gripped, I cleaned it and now it goes very smooth, the engine took it up or down but it would not stop and it would hold, I thought that the encoder series but change it and it's the same, i prove it a lot of things but it same
由 penidonejro 完成的
Did you secure the torx screws near the gear when replacing the brew group?
由 Richard Lewis 完成的