23ENGLISH3 Insert the brew group in its seat until it locks into place (see the “WeeklyCleaning of the Brew Group” chapter). Insert the coffee residues drawer.4 Close the service door and insert the coffee grounds drawer.Monthly cleaning of the coffee bean hopperClean the coffee bean hopper once a month when it is empty with a damp cloth toremove coffee oil. Then refill it with coffee beans.DescalingIf the light is steady on, the machine must be descaled.The descaling cycle takes approx. 35 minutes.Not doing this will ultimately make your machine stop working properly. In thiscase repair is NOT covered by your warranty.The Gaggia descaling solution can be purchased separately. For further details,please refer to the maintenance products page in this manual.Warning: Use the Gaggia descaling solution only. Its formula has been designedto ensure better machine performance. The use of other descaling solutions maydamage the machine and leave residues in the water.Warning: Never drink the descaling solution or any products dispensed until thecycle has been carried out to the end. Never use vinegar as a descaling solution.Note: Do not remove the brew group during the descaling process.4219-450-01931 MANUAL GAG. NAVIGLIO HD8749 EN-ES-PT.indd 23 03/12/2018 12:33:23