• 48 •Machine Installation - Service Provider Manual2 Also lubricate the shaft.3 Insert the brew group into its seat again until it locks intoplace WITHOUT pressing the "PUSH" button.4 Insert the coffee grounds drawer and the drip tray. Close theservice door.11.3 DescalingLimescale is a natural part of the water used for machine opera-tion.It needs to be removed regularly as it may clog the water and cof-fee circuit of your appliance.The advanced electronics shows on the machine display (withclear icons) when descaling is needed. Just follow the steps de-scribed below.Warning! If the warning signal is disabled, themachine will not warn the user. Damage resultingfrom failure to perform the descaling cycle is not coveredby warranty.Perform this operation before your appliance stops working dueto clear maintenance neglect.Use the Saeco descaling product only. Its formula has been spe-cifi cally designed to ensure better machine performance and op-eration for its whole operating life. If correctly used, it also avoidsalterations in the dispensed product.The descaling solution and the complete "Maintenance Kit" maybe purchased at your local dealer or at authorised service centres.Warning! Never drink the descaling solution or anyproducts brewed until the cycle has been complet-ed. Never use vinegar as a descaling solution.1 Turn on the machine by pressing the ON/OFF button. Wait forthe machine to complete the rinse and warm-up process. Makesure that the Cappuccinatore is installed.Warning! Remove the "Intenza" fi lter before add-ing the descaling solution.2 Fill a container with about ½ litre of water. Insert the suctiontube into the container.