IEC 60335-2-72:2016
[Revised]
Household and similar electrical appliances - Safety - Part 2-72: Particular requirements for floor treatment machines with or without traction drive, for commercial use
...Note 1 to entry: Commercial use is also called professional use...
...Note 1 to entry: BLV is not considered to be of class I, class II, or class III...
...ssness, and during
installation, adjusting, maintenance, cleaning, repairing or transportation...