20Maintenance & CareMaintenance overviewWhat has to be done? How often?Done by whom?Cleaning the chuck Monthly by userChanging the filter Each 50 hours ofoperation by user(check after each10 hours)Changing filter 3752 Each 200 hours ofoperation by userMaintenance by repairworkshop (Changingworn parts; checkingmotor brushes, hous-ing; Cleaning; checkleakage current)Each 500 hours ofoperation by repairworkshop9Gerät kennen lernenGetting to know the unit1 Power switch (at the side of the unit)2 Reduce speed3 Increase speed4 Change direction of speed5 Display for speed [rpm]6 Display for suction level, time, change of the filter bag, etc.7 Menu button down ∨ and reducing suction output8 Menu button up ∧ and increase suction output9 Menu button OK10 Menu button stop11 Memory button 1 for speed/ suction output12 Memory button 2 for speed/ suction output13 Memory button 3 for speed/ suction output14 ON/ OFF button (standby)1 2 3 4 5 6 7 8 9 1011 12 13 14