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Hi all,
I've recently purchased a Barista Express BES870. I'm happy with the results I've been getting thus far but have a few things I'd like to try and get right. Overall, I'm currently having a problem with the size of my shots and the extraction time. From the manual, the goal appears to be:
Flow starts after: 4-7 seconds
Extraction takes: 25-35 seconds
Shot size: 30ml
I've run a few tests to try and get it right but not having much luck.
Details of the tests are as follows:
Whole Beans: Bills Beans - Mr Smooth. Roasted on 29/7/14 (today is 23/8/14). From my knowledge these are good quality beans.
Filter: Single filter basket that came with the machine. Picture below:
http://i.tfcdn.com/img2/xC-skUUAY5r8...A**/fvUG-v8A.B
Filter size selection: Single
Cup selection: 1 cup
Machine is warm before starting.
Puck is trimmed with the included dose trimming tool.
Results are below (when I list numbers for Dose and Pressure, it is where they are showing on the manual gauge with reference to a clock face). As you can see, none of the conditions I've tested so far are giving me even close to the required shot size. I can get the total extraction time in the 25-35 second range..but only if I grind very fine and get a small shot. I realise I have not tried every variable but any help would be appreciated.
I've recently purchased a Barista Express BES870. I'm happy with the results I've been getting thus far but have a few things I'd like to try and get right. Overall, I'm currently having a problem with the size of my shots and the extraction time. From the manual, the goal appears to be:
Flow starts after: 4-7 seconds
Extraction takes: 25-35 seconds
Shot size: 30ml
I've run a few tests to try and get it right but not having much luck.
Details of the tests are as follows:
Whole Beans: Bills Beans - Mr Smooth. Roasted on 29/7/14 (today is 23/8/14). From my knowledge these are good quality beans.
Filter: Single filter basket that came with the machine. Picture below:
http://i.tfcdn.com/img2/xC-skUUAY5r8...A**/fvUG-v8A.B
Filter size selection: Single
Cup selection: 1 cup
Machine is warm before starting.
Puck is trimmed with the included dose trimming tool.
Results are below (when I list numbers for Dose and Pressure, it is where they are showing on the manual gauge with reference to a clock face). As you can see, none of the conditions I've tested so far are giving me even close to the required shot size. I can get the total extraction time in the 25-35 second range..but only if I grind very fine and get a small shot. I realise I have not tried every variable but any help would be appreciated.
| Test | Grind | Dose | Tamp | Flow starts after (seconds) | Total time (seconds) | Pressure | ml |
| 1 | No coffee in basket, test with water | 42 | |||||
| 2 | 2 | 1 | Med | 12 | 35 | 2 | 4 |
| 3 | 7 | 11 | Med | 10 | 25 | 1 | 9 |
| 4 | 9 | Min | Med | 8 | 20 | 1 | 21 |
| 5 | 10 | Min | Soft | 8 | 17 | 11 | 22 |
| 6 | 10 | Min | Hard | 8 | 18 | 12 | 22 |
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