IEC 60335-2-89:2019规定了电动商用制冷设备和制冰机的安全要求，这些设备和制冰机具有集成的电机压缩机，或者根据说明以两个单元提供以组装为单个设备（分体式系统）。 本标准范围内的器具的例子有 -冷藏展示柜和储藏柜； -冷藏手推车柜； -服务柜台和自助柜台； -鼓风冷却器和鼓风冷冻机； -商用制冰机。 在可行的情况下，本标准涉及这些类型的电器带来的常见危害，包括使用易燃制冷剂的电器和使用R 744制冷剂的电器。 本国际标准不适用于可燃制冷剂质量超过22中规定的限值的电器。110或使用根据ISO 817毒性分类为B制冷剂的器具。 它不包括ISO标准中涉及的制冷设备的构造和操作特征。 提请注意以下事实: -对于拟用于车辆或船舶或飞机上的器具，可能需要附加要求； -在许多国家，国家卫生当局、负责保护劳工的国家当局、国家供水当局和类似当局规定了额外的要求。 本标准不适用于 -在跨临界制冷系统中使用易燃制冷剂的器具； -家用制冷器具（IEC 60335-2-24）； -在任何制冷回路中具有超过150g的可燃制冷剂的制冷剂充注量的分体式系统；-工业制冷系统； -电机-压缩机（IEC 60335-2-34）； -商业分配器具和自动售货机(IEC 60335-2-75)； -商用冰淇淋器具； -低温房间； -带有远程电机压缩机的多个冷藏室。 本第三版取消并取代了2010年出版的第二版、修正案1:20 12和修正案2:20 15。本版构成技术修订版。 与上一版相比，此版本包括以下重大技术变更: -案文已与第1部分第5.2版保持一致； -一些注释被删除或转换为规范性文本（4、5.2、7.6、22.111、22.111.1）； -一些分条款已重新编号(22.103、22.104、22.105、22.106、22.107、22.109、22.110、22.111、22.112、22.113,22.114,22.115); -增加了对商用制冰机的要求（5.7、5.101、7.1、11.8、19.102）； -已经澄清了带有远程制冷剂单元或电机压缩机的电器的安装（5.10、11.2）； -增加了在跨临界制冷系统中使用R-744制冷剂的远程制冷剂单元的设备的安装说明（7.12.1）； -增加了使用R-744制冷剂的设备的压力测试（22.7）； -在表102中添加了额外的制冷剂，并将其更新为仅参考ISO 817和ISO 5149-1数据； -增加了每个制冷回路中制冷剂充注量超过150克易燃制冷剂的电器的附加要求(7.1、21.103、22.108、22.110、22.116、22。117、22.118、22.119、22.120、22.121，附件CC)； -附件AA已被修改，以涵盖以不同于电器额定电压的电压供电的电机； -附录BB已更新，以符合IEC 60079-15的最新版本。 本第2部分应与最新版本的IEC 60335-1及其修正案一起使用。它是在该标准第五版（2010年）的基础上建立的。

IEC 60335-2-89:2019 specifies safety requirements for electrically operated commercial refrigerating appliances and ice-makers that have an incorporated motor-compressor or that are supplied in two units for assembly as a single appliance in accordance with the instructions (split system).
Examples of appliances that are within the scope of this standard are
– refrigerated display and storage cabinets;
– refrigerated trolley cabinets;
– service counters and self-service counters;
– blast chillers and blast freezers;
– commercial ice-makers.
As far as is practicable, this standard deals with the common hazards presented by these types of appliances including those that use flammable refrigerants and appliances employing R 744 refrigerant.
This International Standard is not applicable to appliances with a mass of flammable refrigerant exceeding the limits specified in 22.110 or to appliances with that use refrigerants with a toxicity classification of B according to ISO 817.
It does not cover those features of construction and operation of refrigerating appliances that are dealt with in ISO standards.
Attention is drawn to the fact that
– for appliances intended to be used in vehicles or aboard ships or aircraft, additional requirements can be necessary;
– in many countries, additional requirements are specified by national health authorities, the national authorities responsible for the protection of labour, the national water supply authorities and similar authorities.
This standard does not apply to
– appliances using flammable refrigerant in transcritical refrigeration systems;
– domestic refrigerating appliances (IEC 60335-2-24);
– split systems having a refrigerant charge of flammable refrigerant exceeding 150 g in any refrigerating circuit;
– industrial refrigerating systems;
– motor-compressors (IEC 60335-2-34);
– commercial dispensing appliances and vending machines (IEC 60335-2-75);
– commercial ice-cream appliances;
– cold temperature rooms;
– multiple refrigerated chambers with a remote motor-compressor.
This third edition cancels and replaces the second edition published in 2010, Amendment 1:2012 and Amendment 2:2015. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
– the text has been aligned with Ed 5.2 of Part 1;
– some notes have been deleted or converted to normative text (4, 5.2, 7.6, 22.111, 22.111.1);
– some subclauses have been renumbered (22.103, 22.104, 22.105, 22.106, 22.107, 22.109, 22.110, 22.111, 22.112, 22.113, 22.114, 22.115);
– requirements for commercial ice-makers have been added (5.7, 5.101, 7.1, 11.8, 19.102);
– installation of appliances with a remote refrigerant unit or motor-compressor has been clarified (5.10, 11.2);
– installation instructions for appliances with a remote refrigerant unit employing R-744 refrigerant in a transcritical refrigeration system have been added (7.12.1);
– a pressure test for appliances employing R-744 refrigerant has been added (22.7);
– additional refrigerants have been added to Table 102 and it has been updated to reference only ISO 817 and ISO 5149-1 data;
– additional requirements for appliances with a refrigerant charge exceeding 150 g of flammable refrigerant within each refrigerating circuit have been added (7.1, 21.103, 22.108, 22.110, 22.116, 22.117, 22.118, 22.119, 22.120, 22.121, Annex CC);
– Annex AA has been modified to cover motors that are supplied at a voltage that is different from the rated voltage of the appliance;
– Annex BB has been updated to align with the latest edition of IEC 60079-15.
This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its amendments. It was established on the basis of the fifth edition (2010) of that standard.