前言这是协调CSA集团和UL标准，适用于电动操作的手持工具、可移动工具以及草坪和花园机械-安全-第2-21部分:手持排水清洁器的特殊要求。这是CAN/CSA-C22的第一版。2编号62841-2-21和第一版UL 62841-2-21。本协调标准基于IEC出版物62841-2-21:第一版电动手持工具、可移动工具以及草坪和花园机械mdash； 安全-第2-21部分:手持式排水清洁器的特殊要求，2017年5月发布。IEC 62841-2-21受IEC版权保护。范围第1部分的本条款适用，但以下情况除外:补充:IEC 62841的本部分适用于排水清洁器。注101排水清洁器也称为管道清洁器。本标准不适用于钻机和冲击钻机，即使它们可以用作排水清洁剂。注102:IEC 62841的未来部分将涵盖可移动排水清洁器- 3.

PrefaceThis is the harmonized CSA Group and UL Standard For Electric Motor-Operated Hand-Held Tools, Transportable Tools And Lawn And Garden Machinery — Safety — Part 2-21: Particular Requirements for Hand-Held Drain Cleaners. It is the First edition of CAN/CSA-C22.2 No. 62841-2-21 and the First edition of UL 62841-2-21. This harmonized standard is based on IEC Publication 62841-2-21: First edition Electric Motor-Operated Hand-Held Tools, Transportable Tools And Lawn And Garden Machinery mdash; Safety — Part 2-21: Particular Requirements for Hand-Held Drain Cleaners, issued May 2017. IEC 62841-2-21 is copyrighted by the IEC.ScopeThis clause of Part 1 is applicable, except as follows: Addition: This part of IEC 62841 applies to drain cleaners. NOTE 101 Drain cleaners are also known as pipe cleaners. This standard does not apply to drills and impact drills, even if they can be used as a drain cleaners. NOTE 102 Transportable drain cleaners will be covered by a future part of IEC 62841-3.