Replies to This Discussion

Permalink Reply by Dustin DeMers on November 14, 2011 at 7:44pm

You should try what terry said and report back. I verified today that the roburs I use grind 19 grams of coffee in 2.9 seconds. They have the static screen in tact.

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Permalink Reply by u30jxwipu1i1 on November 14, 2011 at 9:51pm

The screen may be the problem. It really depends on the environment that the grinder is in. I have seen this many times, and removal of the screen usually resolves it. The clicking sound can be created when coffee is being held back by the screen.

If you grind up a rock or nail, the grinding chamber can get gouged, causing the lower burr carrier to strike the rough spot in the grinding chamber, making a clicking sound. Removal of the lower burr carrier is a good idea, to make sure you find all the damage.. If you find a spot where the carrier is rubbing, try to determine what the cause was, smooth out the spot with a file and sand paper, until you are satisfied with the clearance.

 

Apply a food safe lubricant to the threads of the adjustment ring, to help with the adjustment. When you remove the ring, be sure to remove all debris from the threads of both the adjustment ring and the grinding chamber.

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Permalink Reply by Peach on November 15, 2011 at 7:50pm

Terry,

I can't thank you enough for your comments. I am excited to try taking out the gaurd and will be doing this tomorrow! I bealieve this could be the issue after reading your comment. Also, i was using a very full city roast when running these tests. Thanks again and will be posting back tomorrow!

-peach

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Permalink Reply by Peach on November 18, 2011 at 5:48am

Here is a update. 

 

I took the screen out and thoroughly re-cleaned thee machine. Taking out the screen helped a little 8.8 seconds, very surprised...

I clocked the RPM of the machine 528 Rotations Per Minute, which is over Mazzer Specs, But it wasn't under a load when I clocked it.

with that, I am stumped, so I email mazzer telling them the whole story. I am in correspondence with Luca from mazzer now.  I just want to grind and experience the mazzers we all know and love.. The one I have never has and never will do that, unless mazzer helps..

 

Can't thank you guys enough for all your time and advice. Keep you updated.

 

peach

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Permalink Reply by Dustin DeMers on November 18, 2011 at 7:08pm

Thanks for the update.   Did the grinder ever grind as fast as its suppose to? Do you have access to a normal running rubur?

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Permalink Reply by Peach on November 19, 2011 at 2:29pm

My mazzer is still not grinding correctly, even with the screen out..

a small update, Luca from mazzer told me to run 5 lbs of white rice through it. I think his intention in telling me to do this to accomplish what Brady suggested, break in the burs.

Either way it, seems he is going to make sure I'm taken care of.  

 

I will be sure to post the end results. 

 

thanks again,

 

peach

Dustin DeMers said:

Thanks for the update.   Did the grinder ever grind as fast as its suppose to? Do you have access to a normal running rubur?

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Permalink Reply by Dustin DeMers on November 19, 2011 at 10:43pm

Did Luca say to run 5 pounds of white rice, or minute rice threw the grinder? Minute rice is partially cooked and softer. I know this because i was trying to clean out one of my hand grinders with normal rice and it was damn near impossible to grind, after looking into it further i realized people were talking about minute rice. Obviously hand grinders and roburs are way different, but id still be worried if it were me.

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Permalink Reply by Jason Haeger on November 20, 2011 at 7:32pm

Yeah, use Minute Rice.  No-one ever uses white rice.  

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Permalink Reply by Peach on November 21, 2011 at 12:00pm

Here is a copy of his email. I will be doing this wednesday and let you know the results!

 

thanks peach

 

Please do the last test : grind 5 pounds of uncooked white rice. that should increase the grinding speed. 

Best regards,
Luca Maccatrozzo - export manager 

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Permalink Reply by Jason Haeger on November 21, 2011 at 12:03pm

I would respond to his email and ask for clarification.  Minute Rice or raw white rice?  

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Permalink Reply by u30jxwipu1i1 on November 21, 2011 at 12:10pm

I can clarify for Luca. Use uncooked white rice as he states. What you are attempting to do is remove the edge of the new burrs. Check out this link created by our shop in London.

 

http://blog.coffeehit.co.uk/2011/10/28/breaking-in-robur-burrs-a-so...

 

As mentioned in the Blog Post, the use of Lava Rocks appears to be a regional thing, as there are different grades of lava rock, and apparently hardness. The clay seems to work well.

 

I think that if the burr trick does not fix the problem, that there is more to it, than a simple fix. I have worked on and sold hundreds of these units, and have seen most of the issues. There have been a few stubborn ones out there for sure. Last ditch effort would be to return it for inspection. If you bought it from us, that would be my next suggestion.

 

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Permalink Reply by russ on December 2, 2011 at 2:12am

Not ure how much help I can be but owning 2 brand-new Robur e's in the past I can verify that the grind time does come down considerably after around 30 pounds of coffee. I think mine started out at around 5 or 6 seconds for a 19 gram double before eventually settling at around 4 seconds.How did the rice suggestion from Mazzer work?

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