16en Water filterSetting the water hardness"Water hardness" appears in the display.1 Check the mains water with the included carbonatehardness test: fill the small measurement tube withmains water up to the 5 ml mark.2 Add drops of indicator solution until the colorchanges from purple to yellow.Important: count the drops and carefully swing themeasurement tube after every drop until the liquidshave mixed thoroughly. The number of dropscorresponds to the water hardness.3 Use the rotary selector to set the measured waterhardness. The value 12 is set by default.4 Confirm with ™.Ending initial set-up"Initial set-up complete" will appear on the display.Confirm with ™.The appliance will switch to standby mode and thestandby display will appear. The appliance is now readyto use.Cleaning the door panelThe door seal has been greased in the factory to make itleaktight. There may be traces of grease left on the doorpanel.Clean the door panel with glass cleaner and a windowcloth or microfibre cloth before using the appliance forthe first time. Do not use glass scrapers.Cleaning accessoriesBefore using the accessories for the first time, cleanthem thoroughly using hot detergent solution and a softcloth.Heating up the applianceMake sure that there is no leftover packaging in thecooking compartment.To eliminate the new-appliance smell, heat up the emptyappliance with the door closed. One hour with hot air Hat 200 °C is ideal for this.+ Water filterWater filterOperation with or without a waterfilterYou can use the appliance with or without a water filter.If the water hardness exceeds 7°dH or carbonatehardness 5°dH, we recommend the installation of thedescaling system GF 111 100.Changing the water filterFilter cartridges should be replaced regularly.Replacement cartridges are available from after-salesservice or in the online shop (order numberGF 121 110).The capacity of the filter cartridge depends on thefrequency of use of the appliance and your regionalwater hardness. A message will appear in the display toremind you when the filter needs to be replaced.Regardless of the actual amount of water filtered thefilter cartridge needs to be changed after 12 months atthe latest.1 Set the function selector to S. Select "Water filterchange" using the rotary selector.2 The œ symbol is displayed. Confirm with ™.3 Change the water filter cartridge. Refer to theinstructions included with the filter cartridge.Confirm with ™.4 "Water filter capacity" is shown in the display.Confirm with ™.5 Turn the rotary selector to select the capacity of thefilter cartridge (between 100 - 9000 litres). Confirmwith ™.The water filter change is complete. Confirm with ™.The appliance is now ready for operation.