Announcement

Collapse
No announcement yet.

Anyone had this problem with the Smart Grinder Pro ?

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • #16
    I'm starting to think that there is an issue when the grinder becomes worn. ( internally)
    Can I get you to do a quick check.

    With the bean cannister removed, and the outer burr removed
    Pull up on the centre burr and note if there is any movement.
    also check for any lateral movement.

    I am thinking that the shaft starts to wear and allow the inner burr to move up, making the grind full fine.

    Comment


    • #17
      Originally posted by Darkyellow View Post
      I'm starting to think that there is an issue when the grinder becomes worn. ( internally)
      Can I get you to do a quick check.

      With the bean cannister removed, and the outer burr removed
      Pull up on the centre burr and note if there is any movement.
      also check for any lateral movement.

      I am thinking that the shaft starts to wear and allow the inner burr to move up, making the grind full fine.
      I have made a video of what I’ve done which I should be able to upload soon.
      I removed both burrs and found there is two shim washers under the lower burr.
      I gave the drive shaft a pull and noticed a good amount of up-down movement.
      So it could be that the drive shaft is getting pushed up and staying up.
      I put it all back together without the two shim washers under the lower burr and also refitted the top burr at the most course end of its adjustment.
      I ran it empty and found that I could hear the burrs begin to rub together at the fine end of adjustment, around 10 I think. And they spun free above that.
      I haven’t had a chance to run some beans through it to check results yet.

      Comment


      • #18
        Here is the video I’ve made of it.
        https://youtu.be/qwL6T-MV5KU

        Comment


        • #19
          Moving the drive shaft at 4:24

          Comment


          • #20
            See how you were able to pull the impeller (the plastic toothed thing) straight out? You shouldn't be able to do that. The teeth on it are worn. I have just had exactly the same problem with my 7yo BCG800 - started clacking like a really hard bean was going through it and the safety clutch was kicking in.

            And you know how you think you cleaned it out? I thought I had been doing the same thing too, but nope. There is coffee gunked in underneath where you can't see.

            Watch this video - it's great!: https://www.youtube.com/watch?v=1lL8BInrki8

            Here's the worn impeller - see how, because the teeth are worn down, there is a caking of coffee on the inside of the chamber? That needs to be cleaned out:
            Click image for larger version

Name:	worn impeller 1.jpg
Views:	1
Size:	103.3 KB
ID:	747422

            Cleaning out with vacuum and a toothpick to pick away at the caked stuff. Also ran a cotton bud back and forth through the grind outlet because you now have access to it:
            Click image for larger version

Name:	worn impeller 2.jpg
Views:	1
Size:	94.6 KB
ID:	747423

            Several things:
            1. This was quite easy to do, despite the video looking technical.
            2. Watch the video. You need a long #2 Phillips Head screwdriver. The 25cm Stanley does the trick and the magnetic tip is helpful. This is the guy I bought from Bunnings: https://www.bunnings.com.au/stanley-...river_p6061791
            3. Before you do anything, wind your grind to the finest setting - this is important so you don't lose settings.
            4. Review, several times, the aspect of marking the cogs show you get your tooth alignment right.

            I just finished doing all of this, reassembled, and rediscovered what good grinds look and taste like.

            I have also ordered Ben's replacement impeller from here: https://www.ifixit.com/Guide/BCG800X...Impeller/62905
            - Price came to US$38 or about A$53 - Much cheaper than buying a replacement grinder.

            Looking forward to installing the new impeller soon.

            Hope this helps.

            Comment


            • #21
              Originally posted by jcrayon View Post
              See how you were able to pull the impeller (the plastic toothed thing) straight out? You shouldn't be able to do that. The teeth on it are worn. I have just had exactly the same problem with my 7yo BCG800 - started clacking like a really hard bean was going through it and the safety clutch was kicking in.

              And you know how you think you cleaned it out? I thought I had been doing the same thing too, but nope. There is coffee gunked in underneath where you can't see.
              ...
              Hope this helps.
              Wow thanks jcrayon! Very good reply.
              I didn’t know that the clacking problem some are having any my problem are related.
              It’s strange also because my grinder has had less than one full year of use.
              And the problem arose suddenly after I completely cleaned it out.

              Mine does not clack - but every now and then it kind of makes a clunk and moves like it got bumped.

              Now I’m wondering actually if the 800 grinder and the 820 have completely different impellers and the problem with mine might not be so related...

              The impeller in the 820 I have is made with a stainless steel shell, the one I see in the 800 is plastic with much longer pointed tips....

              Comment

              Working...
              X