EN 60335-2-72:2012

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 General requirement
5 General conditions for the tests
6 Classification
7 Marking and instructions
8 Protection against access to live parts
9 Starting of motor-operated appliances
10 Power input and current
11 Heating
12 Void
13 Leakage current and electric strength at operating
   temperature
14 Transient overvoltages
15 Moisture resistance
16 Leakage current and electric strength
17 Overload protection of transformers and associated
   circuits
18 Endurance
19 Abnormal operation
20 Stability and mechanical hazards
21 Mechanical strength
22 Construction
23 Internal wiring
24 Components
25 Supply connection and external flexible cords
26 Terminals for external conductors
27 Provision for earthing
28 Screws and connections
29 Clearances, creepage distances and solid insulation
30 Resistance to heat and fire
31 Resistance to rusting
32 Radiation, toxicity and similar hazards
Annexes
Annex B (normative) - Appliances powered by rechargeable
        batteries
Annex AA (normative) - Precast paving slabs
Annex BB (normative) - Requirements for internal combustion
         engine powered machines using liquefied petroleum
         gas (LPG)
Annex CC (normative) - Falling-object protective structures
         (FOPS) - Dynamic test and performance requirements
Annex DD (normative) - Emission of acoustical noise
Annex EE (normative) - Emission of vibration
Bibliography
Annex ZA (normative) - Special national conditions
Annex ZC (normative) - Normative references to international
         publications with their corresponding European
         publications
Annex ZE (informative) - Specific additional requirements for
         appliances and machines intended for commercial use
Annex ZZ (informative) - Coverage of Essential Requirements
         of EU Directive 2006/42/EC

IEC 60335-2-72:2012(E) deals with the safety of powered ride-on and powered walk-behind machines intended for commercial indoor or outdoor use for the following applications: - sweeping, - scrubbing, - wet or dry pick-up, - polishing, - application of wax, sealing products and powder based detergents, - shampooing of floors with an artificial surface. Their cleaning motion is more linear than lateral or periodic. This standard applies to machines for commercial use. The following list, although not comprehensive, gives an indication of locations that are included in the scope: - public use areas such as hotels, schools, hospitals; - industrial locations, for example factories and manufacturing shops; - retail outlets, for example shops and supermarkets; - business premises, for example offices and banks; - all uses other than normal housekeeping purposes. They may be equipped with a traction drive system. The following power systems are covered: - internal combustion engines, - mains powered motors up to a rated voltage of 250 V for single-phase appliances and 480 V for other appliances and - battery powered motors. Battery powered machines may be equipped with a built-in battery charger. This third edition cancels and replaces the second edition published in 2002 and its Amendment 1 (2005). It constitutes a technical revision. The principal changes in this edition as compared with the second edition of IEC 60335-2-72 are as follows (minor changes are not listed). The standard has be revised completely and changed significantly, in particular with regard to the following clauses: - the title has been changed for better distinction with regard to IEC 60335-2-67; - the scope has been revised editorially to avoid misunderstandings; - Clause 3 has been revised with regard to the requirements revised; - the standard has been revised in general and updated regarding state-of-the-art, as far as necessary, in particular some changes have been made to Clauses 15, 22, and 25; - the markings and instructions (Clause 7) have been revised basically; - a new Annex DD 'Emission of acoustical noise' was added; - and a new Annex EE 'Emission of vibration' was added. Keywords: Floor treatment machine; walk-behind machines, traction drive.