ISO 5149-4:2022
Refrigerating systems and heat pumps — Safety and environmental requirements — Part 4: Operation, maintenance, repair and recovery
This document specifies requirements for safety and environmental aspects in relation to operation, maintenance and repair of refrigerating systems and the recovery, reuse and disposal of all types of refrigerant, refrigerant oil, heat transfer fluid, refrigerating system and part thereof.
This document does not cover "motor vehicle air conditioners" constructed according to the product standards such as ISO 13043.
These requirements are intended to minimize risks of injury to persons and damage to property and the environment resulting from improper handling of the refrigerants or from contaminants leading to system breakdown and resultant emission of the refrigerant.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
4.1 Operation instructions
4.2 Instruction of operating personnel
4.3 Documentation
5 Maintenance and repair
5.1 General
5.2 Maintenance
5.3 Repair
5.4 Change of refrigerant type
5.4.1 General
5.4.2 Planning the change of refrigerant type
5.4.3 Execution of the change of refrigerant type
6 Requirements for recovery, reuse and disposal
6.1 General requirements
6.1.1 Disposal
6.1.2 Personnel
6.1.3 Parts of refrigerating systems
6.1.4 Refrigerants
6.1.5 Handling
6.2 Requirements for recovery and reuse of refrigerant
6.2.1 General
6.2.2 Tests for reuse of refrigerants
6.2.3 Recovery for reuse
6.2.4 Recovery for recycling
6.2.5 Reclaim
6.3 Requirements for disposal
6.3.1 Refrigerant intended for further processing
6.3.2 Refrigerant not intended for further processing
6.3.3 Absorbed R-717 (ammonia)
6.3.4 Refrigerating machine oil
6.3.5 Other components
6.4 Requirements for documentation
6.5 Requirements for refrigerant transfer, transport and storage
6.5.1 General
6.5.2 Refrigerant transfer
6.5.3 Transport
6.5.4 Storage
6.6 Requirements for recovery equipment
6.6.1 General
6.6.2 Operation in respect to the environment
6.6.3 Performance
6.6.4 Operation and maintenance
Annex A (normative) Draining the oil from a refrigerating system
Annex B (informative) Guide specification for recycled refrigerant
Annex C (informative) Handling and storage of refrigerants
Annex D (informative) In-service inspection
Annex E (informative) Guidelines for repairs of equipment using flammable refrigerants
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
4.1 Operation instructions
4.2 Instruction of operating personnel
4.3 Documentation
5 Maintenance and repair
5.1 General
5.2 Maintenance
5.3 Repair
5.4 Change of refrigerant type
5.4.1 General
5.4.2 Planning the change of refrigerant type
5.4.3 Execution of the change of refrigerant type
6 Requirements for recovery, reuse and disposal
6.1 General requirements
6.1.1 Disposal
6.1.2 Personnel
6.1.3 Parts of refrigerating systems
6.1.4 Refrigerants
6.1.5 Handling
6.2 Requirements for recovery and reuse of refrigerant
6.2.1 General
6.2.2 Tests for reuse of refrigerants
6.2.3 Recovery for reuse
6.2.4 Recovery for recycling
6.2.5 Reclaim
6.3 Requirements for disposal
6.3.1 Refrigerant intended for further processing
6.3.2 Refrigerant not intended for further processing
6.3.3 Absorbed R-717 (ammonia)
6.3.4 Refrigerating machine oil
6.3.5 Other components
6.4 Requirements for documentation
6.5 Requirements for refrigerant transfer, transport and storage
6.5.1 General
6.5.2 Refrigerant transfer
6.5.3 Transport
6.5.4 Storage
6.6 Requirements for recovery equipment
6.6.1 General
6.6.2 Operation in respect to the environment
6.6.3 Performance
6.6.4 Operation and maintenance
Annex A (normative) Draining the oil from a refrigerating system
Annex B (informative) Guide specification for recycled refrigerant
Annex C (informative) Handling and storage of refrigerants
Annex D (informative) In-service inspection
Annex E (informative) Guidelines for repairs of equipment using flammable refrigerants
Bibliography