– 4– Do not use the high-pressure hose any-more if the winding is damaged.– Lay the high-pressure hoses in such away that no vehicle can drive over it.– Do not use high-pressure hoses thathave been driven over, kinked, pressedor bent even if there is no externally vis-ible damage.– Store the high-pressure hoses in such away that they are not subject to any me-chanical load.Safety devices serve for the protection ofthe user and must not be put out of opera-tion or bypassed with respect to their func-tion.The safety mechanism against lack of wa-ter prevents the heater from over-heatingwhen there is no water. The burner oper-ates only when there is adequate watersupply.– If the hand spray gun is closed, theoverflow valve opens and the high pres-sure pump diverts the water back to thepump suction side. Thus the permissi-ble working pressure is not exceeded.– The overflow valve is set by the manu-facturer and sealed. Setting only bycustomer service.– The safety valve opens when the over-flow valve is defective.– The safety valve is set by the manufac-turer and sealed. Setting only by cus-tomer service.The thermo-valve opens when the permis-sible water temperature is exceeded andlets out the hot water into the open.The pressure switch switches off the burnerwhen the working pressure falls below theminimum value and switches it on againwhen it is exceeded.The water temperature limiter switches offthe burner when the water has reached atemperature at the burner outlet that is toohigh.The exhaust temperature limiter switchesoff the burner when the maximum permissi-ble exhaust temperature is exceeded. WarningRisk of injury! Device, tubes, high pressurehose and connections must be in faultlesscondition. Otherwise, the appliance mustnot be used.CautionIn case of lacteous oil inform Kärcher cus-tomer service immediatelyÎ Check oil level of the high pressurepump using the oil dipstick.Do not operate the appliance if the oil levelhas fallen below "MIN".Î Add oil if required (see technical speci-fications).Follow the instructions given in the sec-tion "Safety Notes"!Î Read the operating instructions of theengine manufacturer before start-upand follow the safety instructions care-fully.Î Check air filter.Î Check oil level of the engine.Do not operate the appliance if the oil levelhas fallen below "MIN".Safety DevicesWater shortage safeguardOverflow valveSafety valveThermo-valve at the pumpPressure switchWater temperature limiterTemperature stop for exhaust gasesStart upCheck oil level of the high pressurepumpMotor23EN