MEM27026 — Service and repair mobile plant air conditioning systems

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What an assessment for MEM27026 must cover

60 assessable components: 4 elements (25 performance criteria), 11 performance evidence and 24 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
1.5Plan job to conform to Australian Refrigeration Council (ARC) code of practice requirements

2 Service mobile plant air conditioning system

2.1Check that mobile plant is parked and engine/power source are safe for air conditioning system access and work
2.2Conduct visual check of mobile plant air conditioning system
2.3Identify control modules, fieldbus wiring, sensors and control module locations for air conditioning system
2.4Test air conditioning system according to manufacturer specifications
2.5Service system and components to manufacturer specifications and workplace requirements
2.6Identify performance faults, leaks and blockages
2.7Comply with regulations regarding any required topping up of refrigerant
2.8Document test results according to workplace procedures

3 Fault find mobile plant air conditioning system

3.1Interpret system/circuit diagrams and data sheets
3.2Identify and inspect system and circuit components
3.3Select diagnostic procedures and test equipment appropriate to the system and operational history of the vehicle
3.4Check for leaks and blockages
3.5Conduct diagnostic tests on system and components performance
3.6Inspect and assess system/circuit parts against operational specifications
3.7Evaluate faulty conditions, analyse root cause and plan corrective action
3.8Repair or replace faulty components
3.9Recharge refrigerant according to procedures and regulations

4 Recommission mobile plant air conditioning system

4.1Reassemble air conditioning system
4.2Conduct post-repair/post-servicing system checks for correct operation
4.3Document service and repair actions according to workplace procedures

Performance evidence

following work instructions, standard operating procedures (SOPs) and safe work practices including refrigerant safe handling procedures
obtaining and interpreting specifications air conditioning system/circuit diagrams, system operation and control data records, and identifying and inspecting system components for compliance with specifications
planning and undertaking sequential servicing of air conditioning system in accordance with manufacturer specifications and regulatory requirements
checking and adjusting control and system operation using appropriate test equipment, including checking for: ambient and vent temperature, condenser and suction temperature, manifold gauge pressure, refrigerant leaks, heater core and system water coolant leaks
ensuring that the sequence of operations conforms to specifications and operational requirements
recording/reporting any modifications/alterations to the system in accordance with SOPs
fault finding air conditioning systems controls and circuits using fault-finding techniques and appropriate test equipment
repairing/replacing faulty items after testing for compliance to specifications using appropriate tools, equipment and techniques
reassembling of air conditioning system to meet specifications
verifying correct operation of air conditioning system after service and repair
initiating maintenance and/or service follow-up procedures and completing maintenance and/or service reports according to SOPs

Knowledge evidence

safe work practices and procedures and use of personal protective equipment (PPE)
types of air conditioning systems used in mobile applications, including: piston, scroll and rotary vane compressors, electric compressors, variable displacement compressors, clutchless compressors, single and multi- zone
system operational and control requirements and specifications, including: high and low pressure switches, pressure relief valves, temperature sensors, sunlight sensors, zone temperature sensors, carbon dioxide sensors
heating system components, including core, control valve, blower motor and fan, ducts, controls and sensors
typical mobile systems refrigerants, their features and applications and relationship to Australian Refrigerant Council (ARC) regulatory requirements
lubricating oils
application of air conditioning system components and controls
digital controllers in mobile fieldbus systems (e.g. controller area network (CAN) bus) and their function and capabilities in regards to air conditioning systems
controller fault code interrogation and interpretation where installed
circuit sensors and controllers
special system installation requirements
air conditioning system test equipment and test procedures, including use of: manifold gauges, surface probe thermocouples, temperature gauges, scan tools, electrical test equipment, electronic leak detectors, recovery units, vacuum pumps, electronic scales, other test equipment relevant to the vehicle system
correct operational sequence of the system
typical adjustments to correct sequencing variations from specification
procedures for recording/reporting modifications/alterations and consequences of not recording/reporting
air conditioning system commissioning procedures
components not complying with operational specification and typical causes of component failure
cause of the faulty condition in the component and appropriate procedures for rectifying the faulty condition
appropriate maintenance schedule and procedures
appropriate control component repair procedures
typical test equipment and its application
common adjustments that can be made to control systems and their effect
any maintenance/service follow-up procedures
maintenance/service recording/reporting requirements

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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Questions about assessing MEM27026

What does an assessment tool for MEM27026 need to cover?

To satisfy the Principles of Assessment and Rules of Evidence, an assessment for MEM27026 needs to address all 60 unit components: 4 elements with 25 performance criteria, 11 performance evidence requirements, 24 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 MEM27026?

Auditori pulls the current release of MEM27026 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 MEM27026 — with no card and no subscription required. After that it's pay-as-you-go per unit.

Can I check my existing MEM27026 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 MEM27026, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.

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