37DESCALINGDescale the machine when the red light andthe message "DESCALE!" flash on the display.Important! Descaler contains acids whichmay irritate the skin and eyes. It is vital to adhere tothe manufacturer’s safety warnings given on thedescaler pack and the warnings relating to the pro-cedure to follow in the event of contact with the skinand eyes.NB! Use De’Longhi descaler only. Underno circumstances should you use sulphamic oracetic based descalers. Their use invalidates theguarantee. Failure to descale the appliance asdescribed above also invalidates the guarantee.1. Turn the machine on.2. Enter the settings menu by pressing the Pbutton.3. Turn the selection dial until "Descaling" is dis-played;4. Select by pressing the button."Descaling Confirm?" is displayed. Pressagain to activate the function.5. The message "Add Descaler Confirm?" is dis-played.6. Before confirming, empty the water tank (A7),then add the descaler diluted with wateraccording to the proportions indicated on thedescaler pack. Always use descaler recom-mended by De’Longhi (contact De’Longhicustomer services). Place an empty containerwith a minimum capacity of 1.5 litres underthe hot water spout (A19) (fig. 4).Important! Danger of burns. Hot watercontaining descaler flows out of the hot waterspout. Avoid contact with splashes of water.7. Confirm with the button.8. The message "Descaling Underway..." is dis-played. The descaling programme starts andthe descaler liquid is delivered from the waterspout. The descale programme automaticallyperforms a series of deliveries and pauses toremove limescale deposits from inside themachine.After about 30 minutes, the message "Rinsing...FILL TANK!" is displayed.9. The appliance is now ready for rinsingthrough with clean water. Remove the watertank, empty, rinse under running water, fillwith clean water and replace. "Rinsing...Press OK" is displayed.10. Empty the container used to collect the desca-ler solution and replace it under the hot waterspout.11. Press the button to start rinsing. Hotwater is delivered from the spout and themessage "Rinsing..." is displayed.12. When the water tank is completely empty, themessage "Rinsing Complete Confirm?" is dis-played.13. Press the button, fill the water tankand the appliance is ready for use.SETTING WATER HARDNESSThe DESCALE message is displayed after a periodof time established according to water hardness.The coffee maker is factory set for a hardnessvalue of 4 (very hard water). The machine canalso be programmed according to the hardness ofthe mains water in the various regions, varyingthe frequency with which the message is displa-yed.Measuring water hardness1. Remove the "TOTAL HARDNESS TEST" indica-tor paper from its pack.2. Immerse the paper completely in a glass ofwater for about a second.3. Remove the paper from the water and shakelightly. After about a minute, 1, 2, 3, or 4 redsquares form, depending on the hardness of thewater. Each square corresponds to one level.Setting water hardness1. Press the P button to enter the settings menu.2. Turn the selection dial to select "WaterHardness".3. Confirm the selection by pressing thebutton (or the button to exit).4. Turn the selection dial and set the level shownby the indicator paper (see previous para-graph).GBLevel 1Level 2Level 3Level 4