Elements and Performance Criteria

Range of contexts:
This competency standard applies to:
Truck/Bus/Trailer Manufacture and Assembly

Sources of information/documentation may include:
Manufacturer specifications
Company operating procedures
Customer requirements
Industry codes of practice
Statutory legislation
Statutory legislation for vehicle road worthiness (including ADRs)
Material safety data sheets
State/industry OH&S legislation
Award provisions

Resources may include:
Hand tools, refrigerant leak detecting equipment, evacuation equipment, refrigerant recovery and/or recycling equipment, thermometers, refrigerant gassing equipment, refrigerant, refrigerant oils, refrigeration system kits
Ram air fan
Pipes, hoses, fittings
Work order and company documentation
Qualified workplace assessor
Workplace or simulated workplace

Context:
Competency must be assessed in a safe working environment and in accordance with endorsed industry assessment guidelines.
The underpinning knowledge and skills may be assessed on or off-the-job.
The assessment of practical skills must take place only after a period of supervised practice and repetitive experience. If workplace conditions are not available, assessment in simulated workplace conditions is acceptable.
The prescribed outcome must be able to be achieved without direct supervision.

Concurrent assessment and pre-requisite relationship:
This unit may be assessed in conjunction with other units that form part of the function or for a particular job role for a company.

Consistency of performance:
Competency is best assessed through observation over a period of time and in a variety of situations. Supplementary evidence of underpinning knowledge and the capability to manage tasks and operational and workplace contingencies should be gained through questioning and the use of work based examples.
Questioning should be undertaken in such a manner as is appropriate to the language and literacy levels of the operator and to the requirements of the unit of competency.

Language, literacy and numeracy skills:
Speaking and listening skills may include:
Listening to and following verbal instructions
Giving verbal instructions and technical information

Reading and writing skills may include:
Reading and interpreting company forms and technical information eg work orders, company standards documentation, installation procedures, test procedures
Completing company forms (written / electronic) eg job sheets
Reading and interpreting tags and labels

Numeracy skills may include:
Measuring gas quantities used

Critical aspects of evidence:
Evidence of achievement is required in all of the following:
Install and commission refrigeration systems in accordance with specifications
Purge refrigeration system
Gas the refrigerant system
Conduct system performance test
Conduct a leak test
Complete company documentation - written / electronic

Underpinning knowledge:
OH&S legislation
Industry codes of practice
Statutory legislation where application
Refrigeration installation procedures
Construction and operation relevant to application
Leakage test procedures
System electrical circuits
Equipment/material safety requirements
Equipment maintenance procedures
Appropriate refrigerant/oils and capacities
Pipe and hose fabrication procedures