PMitchell08
New member
I have a new-to-me Jura Impressa S9 fully-automatic coffee center. I became interested in Jura's fully automatics after being impressed by the quality of the drinks from my office's Impressa F7. I of course cannot afford a $2000+ coffee center, but I do like to tinker with mechanical things on occasion, so when I had the opportunity to acquire a high-end machine with a brew-group malfuntion, I went for it. The DIY brew group refurb was very easy and kinda fun, I also had to clear a sediment blockage in one of the water lines, which was easy to do with a small clean drillbit and the help of the machine to flush the line before refitting it. Now the machine runs beautifully through a brew cycle.
My only remaining reservation with this machine is with the grinder. The grind is very coarse, even on the finest setting. In my office's F7, the machine discharges a solid compacted puck of reasonably fine grounds, on my S9, the puck falls apart when ejected from the brew group, I assume because the grind is too coarse to stick together. Many of the reviews of the S9 complain that the grind is too coarse, so I'm not sure if this is just how the machine is, or if there is something wrong with mine. I can tell based on the sediment buildup and the brew group issues that the previous owner was not maintenance savvy, I fear that perhaps they did not know that the grind cannot be adjusted without the grinder running, and caused damage by adjusting the grinder with solid beans between the burrs. The machine has less than 700 total brews, which I wouldn't think would be enough for there to be any major wear on the grinder, the burrs don't look dull, and the grinder does not have any buildup in or around it. My office's F7 has ~1300 brews.
So my questions are,
Would you expect to see a difference between the performance of the grinder between two similar Jura brewcenters? (i.e. My S9 vs my office's F7)?
Do you have any suggestions for improving the grinding performance of the Jura Capresso Impressa S9?
Is there any way to repair damage possibly done by adjusting the grinder while it was not running?
Is there a way to adjust the grinder to a finer position than its factory limit?
Thank you in advance for your thoughts, advice, and expertise, I'm looking forward to hearing from you.
My only remaining reservation with this machine is with the grinder. The grind is very coarse, even on the finest setting. In my office's F7, the machine discharges a solid compacted puck of reasonably fine grounds, on my S9, the puck falls apart when ejected from the brew group, I assume because the grind is too coarse to stick together. Many of the reviews of the S9 complain that the grind is too coarse, so I'm not sure if this is just how the machine is, or if there is something wrong with mine. I can tell based on the sediment buildup and the brew group issues that the previous owner was not maintenance savvy, I fear that perhaps they did not know that the grind cannot be adjusted without the grinder running, and caused damage by adjusting the grinder with solid beans between the burrs. The machine has less than 700 total brews, which I wouldn't think would be enough for there to be any major wear on the grinder, the burrs don't look dull, and the grinder does not have any buildup in or around it. My office's F7 has ~1300 brews.
So my questions are,
Would you expect to see a difference between the performance of the grinder between two similar Jura brewcenters? (i.e. My S9 vs my office's F7)?
Do you have any suggestions for improving the grinding performance of the Jura Capresso Impressa S9?
Is there any way to repair damage possibly done by adjusting the grinder while it was not running?
Is there a way to adjust the grinder to a finer position than its factory limit?
Thank you in advance for your thoughts, advice, and expertise, I'm looking forward to hearing from you.
