– 6Check the power cord with mains plugfor damage before every use. If thepower cord is damaged, please ar-range immediately for the exchange byan authorized customer service or askilled electrician.The plug and coupling of the extensioncable used must be watertight.Use the extension cord that has an ad-equate cross-section (see "TechnicalData") and unwind it fully from the ca-ble drum.Unsuitable extension cables can behazardous. Only use extension cablesoutdoors which have been approvedfor this purpose and labelled with a suf-ficient cable cross section:For connection values, see type plate/technical data.– STEP 1: Plug the Ground Fault Cir-cuit Interrupter (GFCI) into a work-ing outlet.– STEP 2: Press ’’TEST’’, then press’’RESET’’ to assure proper connec-tion to power.Note: The actual appearance of theGFCI may be different from this illus-tration. WarningObserve regulations of water supplier.According to the applicableregulations, the appliancemust never be used on thedrinking water supply without a systemseparator. Use a suitable system sep-arator manufactured by KÄRCHER; or,as an alternative, a system separatoras per EN 12729 Type BA. Water flow-ing through a system separator is con-sidered non-drinkable.CautionAlways connect the system separatorto the water supply, never directly tothe appliance!For connection values refer to techni-cal specifications Connect the supply hose (maxlength 7.5 m, minimum diameter 1/2“) to the water connection point ofthe machine and at the water sup-ply point (for e.g. a tap).NoteThe supply hose is not included. Open the water supply. Screw the suction hose with filter(order no. 4.440-238.0) to the waterconnection. 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 forapprox. 10 seconds - then switchoff. Repeat the procedure for a cou-ple of times. Switch off the appliance and fit thenozzle again.GFCI INSTRUCTIONSWater connectionConnection to the water supplyDrawing in water from open reservoirs8 EN