DeLonghi DC312T Owner Manual - Page 9

DESCALING (available in select models only) If the water in your area is hard, lime scale deposits may build up over time. These deposits may affect the correct operation of the appliance. When the ON/AUTO/OFF light flashes, you can descale the machine using commercially available descaling products for drip coffee makers. Follow the instructions provided with these products. If you are not able to find a descaling product, you can follow the procedure below: 1. Pour 4 cups of water into the carafe. 2. Dissolve 2 spoonfuls (about 30 grams) of citric acid (sold at drugstores) in the water. 3. Place the carafe on the warming plate. 4. Press the ON/AUTO/OFF button and let the equivalent of one cup run through, then switch off the machine. 5. Let the solution work for 15 minutes, then repeat steps 4 and 5. 6. Switch the coffee maker back on and run the solution through until the tank is completely emptied. 7. Rinse by operating the machine with water only for at least three cycles (3 full tanks of water). 8. Once the descaling operation is finished, press the SET TIMER and SET CLOCK buttons at the same time to stop the ON/AUTO/OFF light from flashing. The warranty is not valid if the cleaning operation described above is not carried out regularly. TROUBLE-SHOOTING Problem Probable cause Solution The coffee takes longer to The coffee maker needs to be Descale the machine as described in brew. descaled. the section DESCALING. The coffee has an acid taste. Insufficient rinsing after descaling. Rinse the machine as described in the section DESCALING. 8