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Thread: Anyone had this problem with the Smart Grinder Pro ?

  1. #1
    Member Marg1e's Avatar
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    Anyone had this problem with the Smart Grinder Pro ?

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    It set in after I'd moved from Sydney to Geelong - and I will admit from the outset that the 'removalists' were as bad as I've ever known ...

    The grinder's output is like talc. I had it set, almost always, with the grind size on 11 and the grind duration on 9.8. Once here I found that I could only produce coffee even remotely drinkable by pushing the grind size up to ... wait for it ... 24 !!! Of course the duration was all over the shop, as the 24 wasn't really representative.

    Took it in twice to a Breville authorised repairer; but they admitted they weren't really up on "these new models", and I got it back in exactly the same state.

    So I've sent it up, reply paid !, to Breville in Chullora. Fingers crossed.

  2. #2
    CoffeeSnobs Owner Andy's Avatar
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    From what we read on the forum the Breville service at Chullora is top notch but as you found, some authorised repairers are hit and miss... but the fact the place you took it to doesn't see them says something about the local reliability I think.

    Let us know what they find, it might help someone else in the future too.

  3. #3
    Senior Member artman's Avatar
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    Maybe the top burr has moved to a different setting which shifts the adjustment range, have you checked that?

    Also, pretty sure they have a 2 year replacement warranty if it is still in the time frame.

    Cheers

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    Member Marg1e's Avatar
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    Oh, I agree, Andy ! - which is what made me grumpy at the thought of ... SOMETHING's causing my beautiful grinder to play up.
    My reply-paid parcel reached Chullora mail centre on Saturday, where it has sat ever since. Grrrrrrrr ...
    I shall scan the report when it eventually gets back, and post it here.
    P.S. Are you guys down here ? I shall be purchasing my next kilo of beans from you; and observe that I can pick them up from North Geelong ! Coulda knocked me down wiv a fevva ...

  5. #5
    Member Marg1e's Avatar
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    Artman, I am not a very techo person. I can clean my grinder - meaning that I know how to remove the top burr and blow into it, thus covering my face with coffee [grin] - but shifting the adjustment range ? Nup. Something I must, obviously, learn about. BUT NOT NOW ! - not without the grinder to look at ...

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    Quote Originally Posted by Marg1e View Post
    Artman, I am not a very techo person. I can clean my grinder - meaning that I know how to remove the top burr and blow into it, thus covering my face with coffee [grin] - but shifting the adjustment range ? Nup. Something I must, obviously, learn about. BUT NOT NOW ! - not without the grinder to look at ...
    Vacuuming would be better though. Coffee dust is pretty clever at finding it's way into all the internals with very little encouragement.
    Dimal likes this.

  7. #7
    Member Marg1e's Avatar
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    Quote Originally Posted by kbilleter View Post
    Vacuuming would be better though. Coffee dust is pretty clever at finding it's way into all the internals with very little encouragement.
    Hmm. I do have a newish Dyson with a collection of appurtenances ...

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    Quote Originally Posted by Marg1e View Post
    ....shifting the adjustment range ...
    Don't worry, it's actually very easy. http://coffeesnobs.com.au/documentat...tml#post573970

  9. #9
    Member Marg1e's Avatar
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    Quote Originally Posted by MrFreddofrog View Post
    Don't worry, it's actually very easy. http://coffeesnobs.com.au/documentat...tml#post573970
    Ah, but I want to make the grind COARSER ... Still, I shall add your excellent document to my Breville files - many thanks.

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    Quote Originally Posted by Marg1e View Post
    Ah, but I want to make the grind COARSER ... Still, I shall add your excellent document to my Breville files - many thanks.
    The instructions also tell you how to make it coarser too. Just turn it the other way

  11. #11
    Member Marg1e's Avatar
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    Quote Originally Posted by MrFreddofrog View Post
    The instructions also tell you how to make it coarser too. Just turn it the other way
    Touchť !

  12. #12
    Member Marg1e's Avatar
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    Quote Originally Posted by Andy View Post
    From what we read on the forum the Breville service at Chullora is top notch but as you found, some authorised repairers are hit and miss... but the fact the place you took it to doesn't see them says something about the local reliability I think.

    Let us know what they find, it might help someone else in the future too.
    Difficult to report on, this, Andy: they sent it back with an A4 sheet logging my problem and all relevant dates, together with three tiny snaplock bags - 1 saying '0', i saying '20' and the last saying '50'. Except that I have no idea what my own grind looked like. Anyway, I have, with lots of trials, found that it now works perfectly with settings of 14 for the grind size and 11.4 for the length of grind time. Not the same as originally; but I don't care ! I have a reliable shot to pull again, and I'm laughing.
    Could only wish for Breville to have provided me with something by way of information about what was wrong ...

  13. #13
    Member Marg1e's Avatar
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    Quote Originally Posted by kbilleter View Post
    Vacuuming would be better though. Coffee dust is pretty clever at finding it's way into all the internals with very little encouragement.
    I should've asked at the time: were you serious about vacuuming ?
    WiredArabica likes this.

  14. #14
    Senior Member noidle22's Avatar
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    I always use a vacuum to clean out grinders. Use a small brush on the burrs and cavities to agitate the coffee and the vacuum takes care of the rest.
    Just make sure you empty the vacuum asap because stale coffee after sitting in the dust canister for a few days doesn't smell that nice.
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  15. #15
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    My 820 smart grinder pro is having this problem now.
    I just fully removed both burrs and cleaned it out with a brush and vacuum so it was like new, then reassembled it all back the way it was.
    It worked perfectly for a couple shots and then made a clunk clunk a couple times while grinding and slowed right down.
    The grind is now way too fine and takes forever.
    Adjusting the top burr back the notch 3 (back two spots from the finest setting) and setting the grind to 30, it is still grinding much the same, taking about 26 seconds to output 20 g of grinds.

    I pulled it all apart again and inspected the burrs - no signs of damage. Nothing was loose...

    Anyone have a clue what this problem is and how it may be fixed?

  16. #16
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    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.

  17. #17
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    Quote 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 Iíve 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 havenít had a chance to run some beans through it to check results yet.

  18. #18
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    Here is the video Iíve made of it.
    https://youtu.be/qwL6T-MV5KU

  19. #19
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    Moving the drive shaft at 4:24

  20. #20
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    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:
    worn impeller 1.jpg

    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:
    worn impeller 2.jpg

    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.
    gmeddy likes this.

  21. #21
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    Quote 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 didnít know that the clacking problem some are having any my problem are related.
    Itís 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 Iím 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....



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