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Elements and Performance Criteria

  1. Determine the operating conditions of vapour compression systems
  2. Recover refrigerants from split air conditioning systems
  3. Pressure and leak test split air conditioning systems
  4. Evacuate split air conditioning systems
  5. Charge split air conditioning systems
  6. Test the operation of split air conditioning systems
  7. Complete the commissioning/recommissioning of split air conditioning systems
  8. Decommission split air conditioning systems

Required Skills

Required skills

Look for evidence that confirms skills in

reading interpreting and following information on written job instructions specifications standard operating procedures charts catalogues lists drawings and other applicable reference documents

effective communication with appropriate persons

planning and sequencing operations

checking and clarifying task related information

using tools techniques and equipment necessary to check for correct operation

comparing system and component performance operation against specification

identifying faulty components and noncompliances

using appropriate test equipment to identify noncompliance

safely removing containing and adding refrigerant to relevant Australian Standards or codes and regulations

making required adjustments to achieve specifications

applying safety procedures standard operating procedures and legislative requirements to all work undertaken

completing relevant commissioning and decommissioning documentation

Required knowledge

Look for evidence that confirms knowledge of

applicable legislative and regulatory requirements standards codes licensing requirements and sustainable environmental practices for commissioning and decommissioning systems

applicable procedures and legislative requirements for storage handling and treatment of ozone depleting and synthetic greenhouse gas refrigerant

procedures to determine the actual and specified range of operating conditions from measured and calculated values as they apply to particular vapour compression systems

typical work environments demands and considerations

specifications operational characteristics and process for identifying system components

typical problems contingencies and solutions

applicable tools equipment and testing devices and their operation

procedures for evacuating system

procedures for leak testing

procedures for adding refrigerant

requirements and procedures to isolate circuitsappliances

procedures for checking air flow

measuring instrumentsequipment specifications and procedures for checking temperature and system performance

measuring instrumentsequipment specifications and procedures for checking components

procedures for reporting nonconformances

process for identifying refrigerant type

types of commissiong documentation

requirements and procedures for completing documentation

OHS procedures and risk control measures

hazards and risk control measures associated with commissioning split and domestic air conditioning systems

Evidence Required

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria required skills and knowledge range statement and the Assessment Guidelines for the Training Package

Overview of assessment

A person who demonstrates competency in this unit must be able to install split air conditioning systems to manufacturer specifications safely to relevant Australian Standards codes and regulations

Competency in this unit cannot be claimed until all prerequisites have been satisfied

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Assessors must be satisfied that the candidate can competently and consistently perform all elements of the unit as specified by the criteria including required knowledge and be capable of applying the competency in new and different situations and contexts

Context of and specific resources for assessment

This unit may be assessed on the job off the job or a combination of both on and off the job Where assessment occurs off the job that is the candidate is not in productive work then an appropriate simulation must be used where the range of conditions reflects realistic workplace situations The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team The assessment environment should not disadvantage the candidate

This unit could be assessed in conjunction with any other units addressing the safety quality communication materials handling recording and reporting associated with commissioning recommissioning and decommissioning split air conditioning systems or domestic air conditioning and refrigeration appliances and other units requiring the exercise of the skills and knowledge covered by this unit

Method of assessment

Assessors should gather a range of evidence that is valid sufficient current and authentic Evidence can be gathered through a variety of ways including direct observation supervisor reports project work samples and questioning Questioning techniques should not require language literacy and numeracy skills beyond those required in this unit of competency The candidate must have access to all tools equipment materials and documentation required The candidate must be permitted to refer to any relevant workplace procedures product and manufacturing specifications codes standards manuals and reference materials

Guidance information for assessment


Range Statement

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Tools, equipment and testing devices

Refrigeration gauge manifold, Schraeder access valves; quick connect couplings, thermometer/thermocouple temperature measuring devices; analogue and digital vacuum measuring gauges; digital scales; refrigerant recovery unit; vacuum pump; electronic leak detectors, refrigerant containers/cylinders

Legislative and industry requirements

Commonwealth, State and Territory legislation, regulations, standards and industry codes of practice

The Ozone Protection and Synthetic Greenhouse Gas Legislation Amendment Bill 2003; Air conditioning residential best practice guidelines (AIRAH); State and local building regulations

Sustainable environmental practices for commissioning and decommissioning split air conditioning and domestic refrigeration.

System performance

Pressure; temperature; sub cooling; superheating; evaporator coil to air temperature difference

Residential split air conditioning systems

Single head split systems up to 18kw cooling capacity

Domestic refrigeration and air conditioning systems

Domestic refrigeration and air conditioning systems being self contained 240 volt plug in self contained appliances primarily used in domestic/residential situations