– 4 WarningObserve regulations of water supplier.According to the applicable regula-tions, the appliance must never beused on the drinking water supplywithout a system separator. Use asuitable system separator manufactured byKÄRCHER; or, as an alternative, a systemseparator as per EN 12729 Type BA.Water flowing through a system separatoris considered non-drinkable.CautionAlways connect the system separator tothe water supply, never directly to the appli-ance!For connection values refer to technicalspecifications Connect the supply hose (max length7.5 m, minimum diameter 1/2“) to thewater connection point of the machineand at the water supply point (for e.g. atap).NoteThe supply hose is not included. Open the water supply. Screw the suction hose with filter (orderno. 4.440-238.0) to the water connec-tion. Deaerate the appliance:Unscrew the nozzle.Switch on the appliance and let it rununtil the water exiting is bubble-free.At the end let the appliance run for ap-prox. 10 seconds - then switch off. Re-peat the procedure for a couple oftimes. Switch off the appliance and fit the noz-zle again. DangerRisk of explosion!Do not spray flammable liquids.If the appliance is used in hazardous areas(e.g. filling stations) all of the safety provi-sions and operating instructions detailed inthis manual must be observed. DangerLong hours of using the appliance cancause circulation problems in the hands onaccount of vibrations.It is not possible to specify a generally validoperation time, since this depends on sev-eral factors:– Proneness to blood circulation deficien-cies (cold, numb fingers).– Low ambient temperature. Wear warmgloves to protect hands.– A firm grip impedes blood circulation.– Continuous operation is worse than anoperation interrupted by pauses.In case of regular, long-term operation ofthe device and in case of repeated occur-rence of the symptoms (e.g. cold, numb fin-gers) please consult a physician.CautionClean engines only at places with correspond-ing oil separators (environmental safety).Risk of blocking. Place the nozzles in theaccessory compartment with their jointpointing upward.NoteThe appliance is equipped with a pressureswitch. The motor starts up only when thelever of the pistol is pulled. Roll off the high pressure hose totallyfrom the hose drum. Set the appliance switch to "I". Unlock the hand-spray gun and pull thelever of the gun. Only HD 6/13.... Set working pressureand water quantity by turning (rungless)at the pressure- and amount regulation(B) (+/-).Water connectionConnection to the water supplyDrawing in water from open reservoirsOperationHigh pressure operation20 EN