22 SCRUBTEC 653B – 653BL – 651BCL – 661BL 9097058000(2)2009-10 AENGLISH USER MANUALMAINTENANCEThe lifespan of the machine and its maximum operating safety are ensured by correct and regular maintenance.The following table provides the scheduled maintenance. The intervals shown may vary according to particular working conditions,which are to be defined by the person in charge of the maintenance.WARNING!The procedures must be performed with the machine off and the battery disconnected.Moreover, read carefully the instructions in Safety chapter before performing any maintenance procedure.All scheduled or extraordinary maintenance procedures must be performed by qualified personnel, or by an authorised ServiceCenter.This Manual describes only the easiest and most common maintenance procedures.For other maintenance procedures shown in the Scheduled Maintenance Table, refer to the Service Manual that can be consultedat any Service Center.SCHEDULED MAINTENANCE TABLEProcedure Daily, after usingthe machine Weekly Every sixmonths YearlyBattery chargingSqueegee cleaningBrush/pad cleaningTank and vacuum grid with float cleaning, and cover gasket checkChemical Mixing System cleaning and draining (optional)Squeegee blade check and replacementSolution/clean water filter cleaningVacuum system motor cleaningWET battery fluid level checkScrew and nut tightening check (1)Brush/pad-holder motor carbon brush check or replacement (2)Vacuum system motor carbon brush check or replacement (2)Drive system motor carbon brush check or replacement (Only forSCRUBTEC 653BL, SCRUBTEC 651BCL, SCRUBTEC 661BL) (2)And after the first 8 working hours.(1)This maintenance procedure must be performed by Nilfisk Alto authorised Service Center.(2)