17• Press the button to set the auto-start time. (If you hold the , button down, the time ischanged rapidly).• Press the button to confirm the value,• Press once and the appliance displays the message:AUTO-START NOPress the button to modify the function (the appliance displays AUTO-START YES");• Press the button to activate auto-start;• Press the button to exit programming mode or the button to change other parameters.12.3 DescalingOver time, the continuous heating up of the water used to make the coffee leads to lime scale building up inthe inner circuits of the appliance.When the appliance displays the message:DESCALEYou should perform the descale cycle.Proceed as follows:• make sure the appliance is ready.• press the button (the light over the button comes on) then press the button repeatedly untilthe appliance displays:DESCALE NO• Press and the appliance displays the message:DESCALE YES• Press the button to start the descale program.• Empty the tank and pour in the contents of one bottle (4.2 fl. oz.) of DURGOL descaler plus 34 oz. ofwater. For subsequent descaling operations, descaling solution can be purchased from authorized tech-nical service centers.Note: Make sure splashes of descaler do not fall onto surfaces sensitive to acid such as marble, limesto-ne and glaze.• Place a plastic or glass container with a minimum capacity of 50 oz under the hot water spout (Fig. 3);• Turn the steam knob half a turn counterclockwise (fig.3). The descaling solution will run out of the cap-puccino frother and start to fill the container underneath.• The descale program automatically performs a series of run offs and pauses to remove lime scale depo-sits from inside the coffee maker.• After about 30 minutes, the appliance displays:DESCALING COMPLETED TURN KNOB• Turn the steam knob a half turn clockwise as far as it will go (fig. 4).The appliance must now be rinsed through to eliminate residues of descaling solution from inside the applian-ce. Proceed as follows:• Remove the water tank, rinse and fill with clean water.• Reposition the tank.• Empty the collection container (under the cappuccino frother) full of liquid and then put it back under thecappuccino frother.• Turn the steam knob a half turn counterclockwise (fig. 3).