English Operating Instructions32DecommissioningIn the event of lengthy periods of non-useor if frost-free storage is not possible:! Drain off water and flush out equipmentwith antifreeze! Drain cleaning fluid tankDrain off water! Unscrew water supply hose and high-pressure hose! Screw off supply line at boiler base andcompletely drain heating coil! Run unit for max. 1 min until pump andlines are emptyFlushing unit with anti-freeze! Fill the float tank with a commerciallyavailable antifreezing compound! Swith the unit on (without the burner)until it is thoroughly purged! Observe handling instructions ofantifreeze manufacturerBy this means, a certain degree ofcorrosion protection is achievedMaintenanceWarning!Disconnect unit from mains before carryingout any maintenance or repair work.Always use genuine spare partsTurn off unit prior to all work, see "Afterevery operation".! Set unit switch (item 23) to "0"! Pull power plug out of socket! Shut off water supply! Actuate handgun to depressurise unit.! Remove water connection! Allow unit to cool downYour Kärcher dealer will be pleased toinform you on the performance ofregular safety inspectionsand conclusion of a maintenancecontractMaintenance intervalsOnce a week— Clean strainer in water connection— Clean the fine filter— Check oil levelImmediately consult the Kärcher servicestation when oil turns milky!Once a month— Clean strainer in low water protection— Clean filter at cleaning-agent suctionhoseAfter 500 hours of operation, at leastonce a year— Change oilMaintenance tasksClean strainer in waterconnectionFig. 11! Remove strainer! Clean in water and re-insertClean the fine filterFig. 12! Cut pressure to unit! Screw off cover with filter! Clean filter with clean water or withcompressed air! Assemble in the reverse order