When you have prepared your espresso and pressed start, the correct amount of water (depending on how many shots you selected with the Dose button: 1 (~ 30 ml) or 2 (~ 60 ml) will be dispensed. The hot water is forced through the coffee grounds that you put into the filter basket and tamped.
Shot duration should be between 20-30 seconds for both 1 and 2 shots.
- If less than 20 seconds (ie. it comes out too quickly): the coffee is too coarse, so use a finer grind. There may not be enough coffee in the filter basket, or you could have tamped too softly, so try being more firm (15-20 kg or 30-40 lb of force).
- If more than 30 seconds (ie. it comes out too slowly): increase grind size and/or reduce tamp pressure.