Individuals must be able to demonstrate knowledge of:
work health and safety (WHS) and occupational health and safety (OHS) requirements relating to diagnosing and repairing HVAC and RESS cooling systems, including procedures for:
identifying hazards and controlling risks associated with:
working with high voltages in BEV electrical systems
wearing jewellery while working around high electrical currents
working with refrigerants at boiling point given risk of frostbite
working with system lubricants, including carcinogenic oils
handling flammable refrigerants
determining appropriate procedures for minimising risk associated with hazards, including applying electrical safety precautions:
using personal protective equipment (PPE), including electrical safety gloves with 1000 volt rating and high voltage (HV) insulating mat with Australian standards rating
identifying and using fire safety equipment as appropriate
using the ‘one hand rule’
following live system warning tags and signs
depowering the vehicle
isolating the HV RESS electrical supply
stabilising the vehicle electrical system
environmental requirements, including procedures for:
trapping, storing and disposing of waste released from HVAC and RESS cooling systems
preventing the escape of refrigerant to the atmosphere
key requirements of AS 5732 Electric vehicle operations: Maintenance and repair
operating principles of HVAC systems and RESS cooling systems and associated components, including:
types of HVAC systems, including engine operated and electric motor operated systems
types of RESS and RESS charging
reasons for cooling the RESS
application, purpose and operation of HVAC systems and RESS cooling systems and components, including:
alternating current (AC) electric motor compressors
HVAC control units
HVAC control unit inputs and outputs
HVAC ejector cycle systems
RESS cooling systems, including air cooling, liquid cooling and HVAC cooled systems
diagnostic testing procedures for HVAC and RESS cooling systems, including:
accessing and interpreting scan tool system data, including:
diagnostic trouble codes (DTCs)
live data
freeze frame data
waveforms
using diagnostic flow charts
testing electrical systems, including procedures for:
accessing electrical terminals and using test probes without damaging connectors, fuse holders or wiring
determining damage to compressor motor windings
checking insulation resistance of compressor motor windings
checking routing and damage to HV cabling
HVAC dynamic and static testing
analysing abnormal noise
analysing component failure
repair procedures for HVAC systems and RESS cooling systems, including:
tightening connections
replacing faulty or damaged cable connections
removing and replacing faulty or damaged components
post-repair testing procedures for HVAC and RESS cooling systems, including:
DTC clearing procedures
checking for electrical connector mating
static and dynamic performance tests of HVAC systems and RESS cooling systems.
Assessors must satisfy NVR/AQTF assessor requirements and hold an Australian Refrigerant Council (ARC) Refrigerant Handling licence.
Competency is to be assessed in the workplace or a simulated environment that accurately reflects performance in a real workplace setting.
Assessment must include direct observation of tasks.
Where assessment of competency includes third-party evidence, individuals must provide evidence that links them to the BEV HVAC and RESS cooling systems that they have worked on, e.g. repair orders.
Assessors must verify performance evidence through questioning on skills and knowledge to ensure correct interpretation and application.
The following resources must be made available:
automotive repair workplace or simulated workplace
ARC accredited service decal sticker (ARCtick)
PPE and safety equipment, including electrical safety gloves with 1000 volt rating and HV insulating mat with Australian standards rating
manufacturer specifications for BEV HVAC and RESS cooling systems
AS 5732 Electric vehicle operations: Maintenance and repair
two different BEVs with HVAC and RESS cooling system components accessible for diagnosis and repair or replacement activities
electrical diagnostic equipment appropriate to the BEV HVAC and RESS cooling being diagnosed and repaired as specified under tools and equipment in the range of conditions
tools, equipment and materials appropriate for repairing HVAC and RESS cooling systems in BEVs.