Electric pressure washer series krcher k4 max working pressure 130 bar min working pressure 20 bar water flow rate lh 420 lh area performance 30 mh configuration options variable pressure control power 1 800 watt pump operation mains 230 v max water feed temperature 40 c included in delivery trigger gun vario power spray lance dirt blaster high pressure hose features wheels detergent tank telescopic handle hose length 6 m dimensions lxwxh