How do you know when to replace grinder burrs (Ascaso I-1)?
I recently picked up a used Ascaso I-1 to use in the office. It grinds ok, seems to be pretty consistent in size, but in the last couple of days it's been bogging down a bit when grinding, like it's labouring to get through the beans.
How can I tell if the burrs need replacing?
Would burrs in need of replacement cause the grinder to slow down and speed up while grinding? It doesn't always slow down when grinding, but its happening more often. Could there be a problem elsewhere in the drivetrain?
I don't mind replacing the burrs if that will fix the problem, but I don't want to spend the money on new burrs only to find the motor or other component is faulty and I need to bin the grinder and get something else...
Just wondering what coffee are you using?
At the moment i'm sourcing beans from a small roaster not far from work. The current batch is yirgacheffe but I have also had their house blend. The yirg was roasted about 8 days ago, the house blend is usually also a similar freshness. They tend to roast a bit darker than the current trend for lighter roasts, if that makes any difference..?
I find that a darker roast leads to a finer grind which you may experience the 'clogging' with and leave the grinder struggling. So it could be that...However, I'm not a guru on grinders, so I won't be able to diagnose your problem I'm afraid! But many other CS'rs can help you out
Originally Posted by jools
I've been using the same bean supplier for a number of weeks without too much of a problem, but it's only been the last two weeks or so that it's been bogging down. I might try and pull it apart over the weekend to see if there is another problem there
be warned that "pulling it apart" may well result in causing another problem. Suggest to carefully turn grinder upside down to remove beans from hopper and throat area. Unwind adjustment a few turns ie to a coarser setting (count the number of turns). Place vacuum cleaner pipe end into the throat of the grinder and allow it to suck out. Then place the vacuum cleaner pipe at the exit shute and suck out. Wind adjuster back to where it was before (count the number of turns). Place same coffee back in and test. If its still happening go through the same process to clear out the grinder. Place a different coffee (different SO, blend or different supplier - whatever, but different) in the grinder and test. Obviously you will need to dial in the correct grind for the new coffee. Still happening or not? (and did you fine up the grind before this started happening...?).