18water, fill with clean water and replace. “rinsing... PressOK” is displayed.9. empty the container used to collect the descaler solutionand replace it under the hot water spout.10. Press the OK button to start rinsing. hot water flows outof the spout and the message “rinsing...” is displayed.11. When the water tank is completely empty, the message“rinsing Complete... press OK” is displayed.12. Press the OK button. The appliance goes off.To use it again, turn the appliance on by pressing thebutton.SETTING WATER HARDNESSThe descale message is displayed after a period of timeestablished according to water hardness.The machine is set by default for a hardness value of 4.The machine can also be programmed according to the actualhardness of the mains water in the various regions, varying thefrequency with which the message is displayed.Measuring water hardness1. remove the “ToTal hardneSS TeST” indicator paper fromits pack.2. immerse the paper completely in a glass of water for onesecond.3. after about a minute, 1, 2, 3, or 4 red squares form,depending on the hardness of the water. each squarecorresponds to one level.level 1level 2level 3level 4Set water hardness1. Press the P button to enter the menu.2. Press the or button (corresponding to theand symbol on the display) repeatedly untilthe menu arrow is on “WaTer hardneSS”.3. Confirm the selection by pressing the OK button.4. Press the or button (corresponding to theand symbol on the display) to set thenumber of squares formed on the reactive strip (see figurein the previous section).5. Press the OK button to confirm the setting.6. Press the P button (corresponding to the ESC symbolflashing on the display) to exit programming mode orto change other parameters.The machine is now reprogrammed with the new waterhardness setting.WATER SOFTENER FIlTERCertain models are fitted with a water softener filter. if thisis not the case with your model, you are recommended topurchase one from de’longhi Customer Services. To use thefilter correctly, follow the instructions below.Installing the filter1. remove the filter from the packaging.2. Turn the date indicator disk until the next two months ofuse are displayed. (fig. 35).Nota BeneThe filter lasts about two months if the appliance is usednormally. if the coffee machine is left unused with the filterinstalled, it will last a maximum of three weeks.3. To activate the filter, let tap water go in the hole of thefilter as shown in the figure as long as the water comesout from the side openings for over one minute (fig. 36).4. extract the tank from the appliance and fill with water.5. insert the filter in the water tank and immerse itcompletely for about 30 seconds, turning it upside downto enable the air bubbles to escape (fig. 37).6. insert the filter in the filter housing and press as far as itwill go (fig. 38).7. Close the tank with the lid, then put the tank back in themachine (fig. 39).When you install the filter, you must notify the appliance of itspresence.8. access the menu by pressing the P button;9. Scroll through the menu by pressing the orbutton (corresponding to the and symbolon the display) repeatedly until “install water filter” isdisplayed.10. Press the OK button.11. The message “Water filter, install?” is displayed.12. Press the OK button to confirm the selection. The message“Insert water spout and press OK”.13. Position a container under the hot water spout (min.capacity: 100 ml).14. Press OK to confirm the selection. The appliance beginsdelivering hot water and “Please wait” is displayed.15. after delivery, the appliance is automatically ready to makethe next drink.now the filer is activated and the appliance is ready to use.Replacing the filterWhen “rePlaCe FilTer” is displayed, after two months (seedate indicator) or if the appliance has not been used for 3