MEM18084 — Commission and decommission split air conditioning systems

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What an assessment for MEM18084 must cover

62 assessable components: 9 elements (37 performance criteria), 10 performance evidence and 15 knowledge evidence requirements. An audit-defensible tool maps every question and task back to these — that mapping is the coverage matrix Auditori generates alongside the assessment.

Elements & performance criteria

1 Determine job requirements

1.1Follow standard operating procedures (SOPs)
1.2Comply with work health and safety (WHS) requirements at all times
1.3Use appropriate personal protective equipment (PPE) in accordance with SOPs
1.4Identify job requirements from specifications, drawings, job sheets or work instructions

2 Determine the operating conditions of vapour compression systems

2.1Determine the actual and specified range of operating conditions from measured and calculated values using established procedures to determine as they apply to particular vapour compression systems
2.2Establish operating conditions and record on commissioning documentation
2.3Obtain tools, equipment and testing devices needed to determine the basic operating conditions and check for correct operation and safety

3 Recover refrigerants from split air conditioning systems

3.1Check for, and protect site from, ignition sources if R32 or other flammable refrigerants are used
3.2Isolate circuits/appliances in strict accordance with work health and safety (WHS) requirements and procedures, where necessary
3.3Remove refrigerants safely into suitably labelled containers in accordance with legislative and industry requirements
3.4Deal with contaminated refrigerant in accordance with requirements

4 Pressure and leak test split air conditioning systems

4.1Identify and note safety hazards and implement established risk control measures
4.2Follow industry codes of practice and manufacturer installation instructions
4.3Take precautions to prevent damage to components while pressure testing the system
4.4Conduct pressure testing at a pressure compatible with the refrigerant to be used
4.5Located leak, isolate and repair using methods appropriate to the system type under test and in accordance with industry practices

5 Evacuate split air conditioning systems

5.1Note safety hazards which have not previously been identified, and implement established risk control measures
5.2Evacuate the system to the required level and clean the system of all moisture and other containments in accordance with requirements
5.3Apply a standing vacuum test in accordance with industry codes of practice and applicable standards

6 Charge split air conditioning systems

6.1Select correct refrigerant for the system, in accordance with manufacturer requirements and industry practices
6.2Measure the refrigerant charge by weight in accordance with manufacturer specifications
6.3Charge the system in accordance with manufacturer requirements and industry practices
6.4Check all components and maintain in accordance with manufacturer requirements

7 Test the operation of split air conditioning systems

7.1Start and operate the system
7.2Carry out standard tests to confirm system performance to manufacturer specifications
7.3Check the refrigerant charge and add refrigerant, if required
7.4Leak check the system
7.5Record test data, as required

8 Complete the commissioning/recommissioning of split air conditioning systems

8.1Ensure the worksite is cleaned and left in presentable condition in accordance with original presentation, client requirements, industry standards and organisational requirements
8.2Undertake final inspections to ensure installation conforms to industry, legislative and work order requirements
8.3Instruct the client on the use of the product in accordance with organisational requirements and manufacturer specifications
8.4Complete certificates of compliance and other relevant commissioning documentation and process in accordance with state/territory regulatory requirements

9 Decommission split air conditioning systems

9.1Electrically disconnect plug in appliance
9.2Recover refrigerants, store and dispose of in accordance with legislative and industry requirements
9.3Remove units and components and dispose of safely and in accordance with regulations, industry codes of practice and sustainable environmental practices
9.4Clean the worksite and leave in presentable condition, to client and organisational requirements, industry standards and sustainable environmental practices
9.5Complete decommissioning documentation and process in accordance with state/territory regulatory requirements

Performance evidence

following work instructions, standard operating procedures (SOPs) and safe work practices
identifying and interpreting charts, lists, catalogues, specifications, legislative and industry requirements and drawings and obtaining relevant data with respect to commissioning and decommissioning split air conditioning systems
checking system for correct operation using appropriate tools, techniques and equipment and comparing system and component performance/operation against specifications
isolating circuit and appliances in strict accordance with work health and safety (WHS) requirements and procedures, where necessary
identifying faulty components and non-compliances using appropriate tools, equipment and testing
removing, containing and adding refrigerant safely in compliance with relevant Australian Standards or codes and regulations
pressure and leak testing split air conditioning systems at a pressure compatible with the refrigerant to be used and locating leaks, isolating and applying appropriate repairs, adjustments or remedial action to achieve specifications
completing commissioning procedures, including undertaking final inspection, instructing the client and completing certificates of compliance and other relevant commissioning documentation and processes
decommissioning split air conditioning – single head systems using sustainable environmental practices
completing all relevant commissioning and decommissioning documentation in accordance with state/territory regulatory requirements.

Knowledge evidence

safe work practices and procedures and use of personal protective equipment (PPE)
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
applicable procedures for working with R32 and other flammable refrigerants where used in split air conditioning 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 determining the actual and specified range of operating conditions from measured and calculated values as they apply to particular vapour compression systems
procedures for evacuating system, leak testing, adding refrigerant and checking air flow
requirements and procedures to isolate circuits/appliances
measuring instruments/equipment, specifications and procedures for checking temperature, system performance and components
process for identifying refrigerant type
types of commissioning documentation
requirements and procedures for reporting non-compliances completing documentation.

Unit content sourced from training.gov.au — © Commonwealth of Australia, licensed under CC BY 4.0. Auditori is not affiliated with the Department of Employment and Workplace Relations.

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Real, unedited Auditori output (RIIHAN201E shown), branded for a sample RTO:

Questions about assessing MEM18084

What does an assessment tool for MEM18084 need to cover?

To satisfy the Principles of Assessment and Rules of Evidence, an assessment for MEM18084 needs to address all 62 unit components: 9 elements with 37 performance criteria, 10 performance evidence requirements, 15 knowledge evidence requirements, and the foundation skills. A coverage matrix mapping each question and task to these components is what an auditor looks for.

How does Auditori generate an assessment tool for MEM18084?

Auditori pulls the current release of MEM18084 from training.gov.au and generates a complete package: candidate assessment, assessor guide with model answers and observation criteria, and a coverage matrix mapping every component. A suitably qualified person then reviews and approves the draft in a built-in workflow — consistent with ASQA's guidance on AI use in VET — before export as branded PDF and editable Word.

Is the first assessment tool really free?

Yes. Every new account includes one free credit — enough to generate the complete assessment tool for MEM18084 — with no card and no subscription required. After that it's pay-as-you-go per unit.

Can I check my existing MEM18084 assessment instead of generating a new one?

Yes — upload your existing assessment or learner guide and Auditori maps it against every element, performance criterion, PE and KE of MEM18084, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.

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