IEC 60335-2-69:2016 deals with the safety of electrical motor-operated vacuum cleaners, including back-pack vacuum cleaners, and dust extractors, for wet suction, dry suction, or wet and dry suction, intended for commercial indoor or outdoor use with or without attachments. It also deals with the safety of centrally-sited vacuum cleaners, excluding the installation of the system. They are not equipped with a traction drive. The following power systems are covered: mains powered motors up to a rated voltage of 250 V for single-phase appliances and 480 V for other appliances, battery powered motors. This standard also applies to machines handling hazardous dust, such as asbestos.