Hi all,
I seem to have a strange issue with this particular bean, but also I have seen the same issue occurring with my grinder before, but these 2 weeks its getting weird. The numbers below are the number of shots that I pulled in succession. I pulled at least 2-3 times on the same grind settings to ensure that the flow rate is not due to technique issue
grinder = Baratza preciso
machine = Expobar Leva (brew 10-11 bars, recommeded by the vendor not to adjust)
Beans = Single origin espresso roast
20 grams in, 40 grams out
1-3: 1D, 29s
4-5: 1B, 25s
6-7: 1C, 21s
8-9: (back to) 1D, 18s!!! (8 bars)
10: (try going very fine) 0I, 18s!!
To explain above, I pulled the first 3 shots at grind setting of 1D at 29s. I then set a finer grind at 1B, pulled 2 shots, but the timing was 25s instead!. Then I went coarser one notch to 1C and it was 21s. When I went back to the original settings at 1D on the 8th pull, it was now timing at 18s instead and the brew pressure dropped to 8 bars. The last try was to go really fine but the timing is 18s instead, probably channeling because I ran out of beans by then.
Anyone seen such results before? Any advise?
I seem to have a strange issue with this particular bean, but also I have seen the same issue occurring with my grinder before, but these 2 weeks its getting weird. The numbers below are the number of shots that I pulled in succession. I pulled at least 2-3 times on the same grind settings to ensure that the flow rate is not due to technique issue
grinder = Baratza preciso
machine = Expobar Leva (brew 10-11 bars, recommeded by the vendor not to adjust)
Beans = Single origin espresso roast
20 grams in, 40 grams out
1-3: 1D, 29s
4-5: 1B, 25s
6-7: 1C, 21s
8-9: (back to) 1D, 18s!!! (8 bars)
10: (try going very fine) 0I, 18s!!
To explain above, I pulled the first 3 shots at grind setting of 1D at 29s. I then set a finer grind at 1B, pulled 2 shots, but the timing was 25s instead!. Then I went coarser one notch to 1C and it was 21s. When I went back to the original settings at 1D on the 8th pull, it was now timing at 18s instead and the brew pressure dropped to 8 bars. The last try was to go really fine but the timing is 18s instead, probably channeling because I ran out of beans by then.
Anyone seen such results before? Any advise?
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