IEC 60335-2-79:2016 deals with the safety of high-pressure cleaners without traction drive, intended for household and commercial indoor or outdoor use, having a rated pressure not less than 2,5 MPa and not exceeding 35 MPa. It also applies to steam cleaners and those parts of hot water high pressure cleaners incorporating a steam stage which have a capacity not exceeding 100 l, a rated pressure not exceeding 2,5 MPa and a product of capacity and rated pressure not exceeding 5 MPa·l. They are not equipped with a traction drive. The following power systems of the drive for the high pressure pump are covered: - mains powered motors up to a rated voltage of 250 V for single-phase machines and 480 V for other machines, - battery-operated motors, - internal combustion engines, - hydraulic or pneumatic motors. This standard does not apply to: - high pressure water jet machines having a rated pressure exceeding 35 MPa; - steam cleaners intended for domestic use; - hand-held and transportable motor-operated electric tools; - appliances for medical purposes; - agricultural sprayers; - non-liquid, solid abrasive cleaners; - machines designed to be part of a production process; - machines designed for use in corrosive or explosive environments (dust, vapour or gas) or - machines designed for use in vehicles or on board of ships or aircraft. This fourth edition cancels and replaces the third edition published in 2012. It constitutes a technical revision. The principal changes in this edition as compared with the third edition of IEC 60335-2-79 are as follows (minor changes are not listed): - the standard has been revised editorially to avoid misunderstandings; - the document has been revised for the consistent use of definitions throughout the text; - correct references were added in the foreword; - Annex B has been revised and updated; - Clause 15 has been revised and...