The main benefit of the new ?Upright?-class class of Hot Water High Pressure Cleaner HDS 5/11 U is the horizontal machine concept. This ensures low weight, compact dimensions and the ease with which they can be loaded and transported. They fit also easily in vertical position in a station wagon for transportation from one location to the next. Thanks to their compact size, these units take up a minimum of storage space when they are not in use. Large diameter wheels as well as a ergonomically shaped push/pull handle ensure excellent manoeuvrability and mobility, even on difficult surfaces. The three-piston axial high-pressure pump has hardened stainless-steel pistons and a brass cylinder head. A pressure switch shuts down the unit automatically when the trigger gun is closed. This relieves the load on components and prolongs their service lives. High-pressure pump, burner fan and heating oil pump are driven by an electric motor and are combined to form a drive module. This principle not only ensures a very compact assembly and a high power output, it also makes the units exceptionally reliable. The characteristics of the time-proven K?rcher boiler-technology are high performance in a minimum of space while ensuring full compliance with the statutory emission limits. Single-phase unit with air-cooled two-pole electric motor. Three-piston axial pump with hardened stainless-steel pistons. Chemical feed in low-pressure mode.