Unit of competency Outline

Date retreived
22/07/2026 9:43 AM AWST

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Repair and service secondary refrigeration systems

Repair and service secondary refrigeration systems

Unit of competency
National Code
UEERA0067
State Code
OBZ87
TGA Status
Current
DTWD Status
Approved
Current Release Number
1.00
Current Release Date
05/10/2020
View on TGA
State Implementation and Classification
Approved Date
12/07/2021
Field of Education
031315 - Refrigeration And Air Conditioning Mechanics
Original Release Date
12/07/2021
Nominal Hours
18
Description
This unit involves the skills and knowledge required to repair and service secondary refrigeration systems.It includes maintaining the effective and efficient operation of refrigeration equipment using non-phase changing secondary refrigerant systems. It also includes applying safe working practices, utilising service manuals and refrigeration principles to test and perform maintenance operations to these systems and to locate defective components and repair faults, and completing reports on service and performance outcomes.The skills and knowledgein this unit will be applied by refrigeration and air conditioning technicians during the service and repair of secondary refrigerant systems.The skills and knowledge described in this unit require a licence or permit to practice in the workplace where work is carried out on electrical installations which are designed to operate at voltages greater than 50 volt (V) alternating current (a.c.) or 120 V direct current (d.c.). Competency development activities in this unit are subject to regulations directly related to licensing. Where a licence or permit to practice is not held, skills and knowledge described in this unit require a relevant contract of training, such as an Australian Apprenticeship. Additional and/or other conditions may apply in some jurisdictions subject to regulations related to refrigeration, air conditioning or electrical work. Practice in the workplace and during training is also subject to work health and safety (WHS)/occupational health and safety (OHS) regulations. Permits may also be required for some work environments, such as confined spaces, working aloft, near live electrical apparatus and site rehabilitation.
Notes
Elements and Performance Criteria
1 Prepare to service secondary refrigeration system
  • 1.1 Type of secondary refrigeration system components and operation are identified
  • 1.2 WHS/OHS requirements and workplace procedures and safety data sheets (SDS) are identified and risk control measures implemented, including wearing personal protective equipment (PPE)
  • 1.3 Safety hazards not previously identified are assessed, documented and risk control measures devised and implemented
  • 1.4 Extent of faults is determined from reports, documentation, observation and discussions with appropriate person/s
  • 1.5 Appropriate person/s is consulted to ensure the work is coordinated effectively with others involved on the worksite
  • 1.6 Tools, equipment and testing devices needed to carry out refrigeration work are obtained in accordance with workplace procedures and checked for correct operation and safety
2 Carry out secondary refrigeration maintenance requirements
  • 2.1 WHS/OHS requirements, regulations, workplace procedures and risk control measures are followed
  • 2.2 Components are checked and isolated in accordance with WHS/OHS requirements and procedures
  • 2.3 Refrigeration maintenance tests are performed on the primary cooling source, operating pressures, operating current, refrigerant charge, secondary flow rates and condenser cooling system, and system faults or non-compliance documented to operational specifications
  • 2.4 Refrigeration operational maintenance tests are performed on the secondary refrigerant pumping/circulation devices, pressure and flow rates recorded, and faults or non-compliance to system specification documented
  • 2.5 Chemical integrity, including the dilution rate, anti-bacterial and anti-corrosion rates of the secondary refrigerant, is checked using test kit and following approved WHS/OHS procedures, including PPE, and results or non-compliance are documented
  • 2.6 Secondary refrigerant pipe work is checked for leaks and stability and its insulation is checked for soundness
  • 2.7 Refrigeration system components, evaporators, blowers, other heat exchangers, heat recovery or defrost systems are checked for correct operation and cleanliness
  • 2.8 Control system operation, including safety controls and any faults or non-conformity to system specifications are documented in accordance with WHS/OHS guidelines and workplace practices
3 Repair secondary refrigeration system
  • 3.1 Justification for solutions used to solve refrigeration system problems is documented in accordance with workplace procedures
  • 3.3 Repair work is documented and appropriate person/s notified in accordance with workplace procedures
  • 3.4 Repairs to refrigeration system components are performed to achieve compliance to design operation and manufacturer recommendations for effective operation
  • 3.5 Refrigeration control system are adjusted, as required, to achieve compliance to design operation and manufacturer recommendations for effective operation
  • 3.6 Record of flows, pressures and temperatures obtained before and after repair are compared to refrigeration specifications and contingency measures implemented, as required, to ensure compliance to design operation and manufacturer recommendations for effective operation
4 Complete reports on refrigeration maintenance and repair activities
  • 4.1 Work area is cleaned and made safe in accordance with workplace procedures and practices
  • 4.2 Refrigeration service/maintenance and repair activities on secondary refrigeration system and relevant non-compliance specification after repair are documented and reported to appropriate person/s
No information
No information
Replaces
State Code National Code Title Type
S7412 UEENEEJ182A Repair and service secondary refrigeration systems Unit of competency