1) Fill the water reservoir up to the 10-cup indication with white vinegar.
2) Place a paper filter no. 4 (1x4) in the filter basket to collect the scale and close the filter basket holder.
3) Place the empty jug on the hotplate.
4) Push the on/off button on the front of the appliance to switch on the appliance.
5) Press the strength select button and turn the knob to choose the pre-ground coffee setting.