18 ENGLISH3 Check how many squares have changed to red, then refer to the table.Note:The numbers on the water hardness test strip correspond to the waterhardness adjustment settings.More precisely:1 = 1 (very soft water)2 = 2 (soft water)3 = 3 (hard water)4 = 4 (very hard water)The letters correspond to the references that are located at the base of theAquaClean filter (see next chapter).2 3 4A B CIntenza Aroma SystemMachine Water Hardness Setting14 Now you can program the water hardness setting. Press the “ ” but-ton to access the machine main menu.Note:The machine is supplied with a standard water hardness setting, suitablefor most types of water.MEASURING AND PROGRAMMING WATER HARDNESSMeasuring water hardness is essential for preserving coffee flavour. Tomeasure water hardness, follow the steps below.1 Immerse the water hardness test strip supplied with the machine inwater for 1 second.Note:The test strip can only be used for one single measurement.2 Wait for one minute.