CSA C22.2 NO. 62784:25

Preface This is the harmonized CSA Group and UL Standard for Vacuum Cleaners and Dust Extractors Providing Equipment Protection Level Dc for the Collection of Combustible Dusts – Particular Requirements . It is the First edition of CSA C22.2 No. 62784 and UL 62784. This harmonized standard is based on IEC Publication 62784: Edition 1.1, Vacuum Cleaners and Dust Extractors Providing Equipment Protection Level Dc for the Collection of Combustible Dusts – Particular Requirements issued May 2017, as revised by Amendment 1 issued January 2019. IEC 62784 is copyrighted by the IEC. This harmonized standard was prepared by CSA Group and ULSE. The efforts and support of the Technical Harmonization Subcommittee, THC 79-62784 are gratefully acknowledged. This standard is considered suitable for use for conformity assessment within the stated scope of the standard. This standard was reviewed by the CSA Integrated Committee on Hazardous Location Products, under the jurisdiction of the CSA Technical Committee on Industrial Products and the CSA Strategic Steering Committee on Requirements for Electrical Safety, and has been formally approved by the CSA Technical Committee. This standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group. Scope This International Standard covers electrical mobile motor-operated vacuum cleaners Equipment Protection Level (EPL) Dc. This includes dust extractors, for wet suction or dry suction, intended for commercial indoor use with or without attachments, to collect combustible dust in an explosive dust atmosphere. This document supplements and modifies the requirements of IEC 60079-0. Whenever a requirement of this standard is in conflict with a requirement of IEC 60079-0 the requirement of this standard will take precedence. 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. This document does not cover specific hazards associated with extreme ambient temperatures (less than –20 °C or higher than 40 °C) unless otherwise marked by the manufacturer as given in IEC 60079-0. The temperatures shall not exceed the temperature range of –20 °C to +60 °C. This document does not cover motorized cleaning heads for which additional requirements are under consideration. This document does not apply to – back-pack vacuum cleaners; – vacuum cleaners with a traction drive; – vacuum cleaners and water-suction cleaning appliances for household use (IEC 60335-2-2); – floor treatment machines for commercial use (IEC 60335-2-67, IEC 60335-2-72); – spray extraction machines for commercial use (IEC 60335-2-68); – hand-held mains-operated electrical garden blowers, vacuums and blower vacuums (IEC 60335-2-100); – hand-held and transportable motor-operated electric tools (IEC 62841 series); – appliances for medical purposes (IEC 60601-1); – machines designed for use in corrosive environments; – machines designed for picking up flammable liquids; – machines designed for use in explosive environments due to the presence of explosive substances or pyrotechnical products, or unstable chemical substances. 1DV DR Modification of Clause 1 to replace it with the following: 1DV.1 This document covers electrical mobile motor-operated vacuum cleaners Equipment Protection Level (EPL) Dc for use in Zone 22 locations and that are intended to be installed or used in accordance with CSA C22.1, Canadian Electrical Code, Part I (in Canada) and NFPA 70, National Electrical Code (NEC) (in the US). NFPA 70®, National Electrical Code®, and NEC® are registered trademarks of the National Fire Protection Association, Quincy, MA. 1DV.2 This includes dust extractors, for wet suction or dry suction, intended for commercial indoor use with or without attachments, to collect combustible dust in an explosive dust atmosphere. In the US only, vacuum cleaners intended for Zone 22, Group IIIC are not permitted because there are only Zone 20 and Zone 21 locations for this dust group. 1DV.3 This document supplements and modifies the requirements of UL 60079-0 and CSA C22.2 No. 60079-0. Whenever a requirement of this standard is in conflict with a requirement of UL 60079-0 or CSA C22.2 No. 60079-0, the requirement of this standard will take precedence. 1DV.4 This document does not cover specific hazards associated with extreme ambient temperatures (less than –20 °C or higher than 40 °C) unless otherwise marked by the manufacturer as given in UL 60079-0 or CSA C22.2 No. 60079-0. The temperatures shall not exceed the temperature range of –20 °C to +60 °C. 1DV.5 This document does not cover specific hazards associated with the suction of flammable liquids. 1DV.6 This document does not apply to – back-pack vacuum cleaners; – vacuum cleaners and water-suction cleaning appliances for household use (CSA-E60335-2-2, CSA C22.2 No. 243 / UL 1017); – floor treatment machines with or without a traction drive for commercial use (CSA C22.2 No. 60335-2-67 / UL 60335-2-67 and CSA C22.2 No. 60335-2-72 / UL 60335-2-72; – spray extraction machines for commercial use (CSA C22.2 No. 60335-2-68 / UL 60335-2-68); – hand-held mains-operated electrical garden blowers, vacuums and blower vacuums (CSA C22.2 No. 243 / UL 1017); – hand-held and transportable motor-operated electric tools (CSA C22.2 No. 60745 (all parts), UL 60745 (all parts), CSA E61029 (all parts), UL 987, CSA C22.2 No. 71.2, CSA C22.2 No. 62841 (all parts), UL 62841 (all parts); – appliances for medical purposes (CAN/CSA C22.2 No. 60601-1 / UL 60601-1, ANSI/AAMI ES 60601-1); – machines designed for use in corrosive environments; – machines designed for picking up flammable liquids or combustible liquids with a flash point below 55 °C; – machines designed for use in explosive environments due to the presence of explosive substances or pyrotechnical products, or unstable chemical substances. 1DV.7 Where references are made to IEC and ISO standards, the reference requirements found in these standards apply as modified by any applicable US or Canadian National Differences for the standard (see Clause 2).