IEC 60335-2-89:2019

Overview

IEC 60335-2-89:2019 is an international standard established by the International Electrotechnical Commission (IEC) that specifies safety requirements for commercial refrigerating appliances and ice-makers. This standard covers appliances with either an incorporated motor-compressor or those supplied in split systems with remote refrigerant units or motor-compressors. It addresses a range of commercial refrigeration equipment designed for professional use, providing crucial safety guidelines to mitigate risks associated with electrical operation and refrigerant handling.

The third edition of IEC 60335-2-89 replaces prior editions and amendments, incorporating technical revisions to reflect advancements in safety, refrigerant usage, and appliance installation. It serves as a complement to IEC 60335-1, which covers general safety requirements for household and similar electrical appliances.

Key Topics

• Scope of Appliances Covered
  IEC 60335-2-89 applies to a variety of commercial refrigeration equipment including:

  • Refrigerated display and storage cabinets
  • Refrigerated trolley cabinets
  • Service counters and self-service counters
  • Blast chillers and blast freezers
  • Commercial ice-makers

• Safety for Refrigerants
  The standard addresses common hazards including those linked to the use of flammable refrigerants and R-744 (carbon dioxide) refrigerant. It excludes appliances with refrigerant charges above specified limits or with classified toxic refrigerants (toxicity class B per ISO 817).

• Installation and Operational Requirements
  Clear instructions are required for installation, especially for split systems and appliances with remote refrigerant units. New clauses clarify installation specifics for appliances using R-744 in transcritical refrigeration systems.

• Electrical and Mechanical Safety
  IEC 60335-2-89 includes requirements for protection against electrical hazards such as leakage current, overvoltage, and mechanical hazards like stability, structural integrity, and mechanical strength.

• Testing and Performance Measures
  The standard mandates rigorous testing, including pressure tests for R-744 refrigerant, locked-rotor motor tests, and gas concentration sampling to ensure safe operation and compliance.

• Marking and User Instructions
  Appliance markings must provide comprehensive guidance for safe use, maintenance, and correct refrigerant handling, tailored to commercial settings.

• Updates and Alignment
  The 2019 edition integrates changes to align with Ed 5.2 of IEC 60335-1 and updates Annexes on motor voltage, electrical apparatus for hazardous areas, and refrigerant data referencing ISO standards.

Applications

IEC 60335-2-89:2019 is essential for manufacturers, testing laboratories, regulatory authorities, and commercial end-users operating or supplying refrigerated equipment in sectors such as retail, food service, and industrial food preparation. Its applications include:

• Commercial Refrigeration Manufacturing: Ensuring products meet globally recognized safety standards for electrical and refrigerant systems.
• Safety Compliance Testing: Guiding conformity assessments for commercial refrigerators and ice-makers.
• Installation Guidance: Supporting safe and compliant installation of split refrigeration systems in commercial facilities.
• Risk Mitigation: Minimizing hazards related to flammable or toxic refrigerants and electrical faults in commercial refrigeration units.
• Regulatory Adoption: Providing a base for national safety regulations and certification schemes within different jurisdictions.

Related Standards

• IEC 60335-1: General safety requirements for household and similar electrical appliances; IEC 60335-2-89 supplements and modifies clauses specific to commercial appliances.
• IEC 60335-2-24: Safety standard for domestic refrigerating appliances; distinguishes from commercial refrigeration applications.
• IEC 60079-15: Standards for electrical apparatus in explosive atmospheres; referenced in Annex BB for equipment in hazardous locations.
• ISO 817: Refrigerant classification standard; referenced for toxicity and flammability designations.
• ISO 5149-1: Safety and environmental requirements in refrigeration systems, used for refrigerant properties and safety limits.
• IEC 60335-2-34: Safety requirements for motor-compressors relevant to split refrigeration systems.
• IEC 60335-2-75: Safety for commercial dispensing and vending machines, distinguishing from commercial refrigeration appliances under this standard.

Keywords: IEC 60335-2-89, commercial refrigerating appliances, ice-makers, motor-compressor, refrigerant safety, flammable refrigerants, R-744 refrigerant, electrical appliance safety, refrigeration installation, IEC standards, commercial refrigeration equipment safety, refrigeration safety requirements.