Before putting the water tank back into your coffee machine, fill it with fresh water. 6.
3. Moreover, this technology doesn't affect other minerals found in your water, which are essential for the proper development of coffee flavours and aromas. Take out the water tank from your coffee machine and remove the old filter (if there is one).ION-EXCHANGE RESIN TECHNOLOGY (WQA CERTIFICATION)The ion-exchange resin found in this filter absorbs calcium and magnesium, hence precluding limescale formation.