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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, 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. |
Workplace instructions may include: | electronic or hard copy instructionsverbal instructionswritten instructionssafe work procedures relating to refrigerant recovery and replacement. |
Job requirements may include: | diagnosis and repair methods, processes and equipment. |
Workplace health and safety requirements may include: | material safety data sheets (MSDS)first aid kitpersonal protective clothing and equipmentuse of tools and equipmentsafe handling of materialuse of fire-fighting equipmentworkplace safety policies and proceduresworkplace first aid equipmentwater shower or equivalenthazard control, including control of hazardous materials and toxic substances. |
Procedures and information may include: | verbal, written and graphical instructionssignagework schedules, plans and specificationswork bulletins and memosMSDSdiagrams and sketchessafe work procedures relating to the diagnosis and repair of air conditioning and HVAC systemsregulatory and legislative requirements relating to automotive industryAustralian Design Rulesengineerâs design specifications and instructionsworkplace work specifications and requirementsinstructions issued by authorised workplace or external personsAustralian standardsARC code of practicevehicle service requirements and repair manuals. |
Options for diagnosing faults may include: | isolation of faultscomponent inspection and evaluationuse and application of air conditioning diagnostic tools. |
Tools and equipment: | are to include the following specialist tools, which are mandatory under the ARC code of practice:manifold and gauge setrecovery unitvacuum pumpelectronic leak detectorelectronic scalesmay include:normal hand tools nitrogen cylinder and regulatordigital vacuum gauge (vacrometer)oil injectorinfra-red thermometer (pyrometer)electronic temperature probevalve core removing/replacement toolpsychrometer (humidity detector)various refrigerant hoses and couplersdigital multimeterdiagnostic scan tool. |
Critical precautions may include: | dangers associated with working with refrigerants and lubricants, including:frostbite (refrigerant boiling point -36.7ÂșC)carcinogenic oilcare taken with some flammable refrigerants. |
Air conditioning and HVAC systems may include: | single zone and multi-zone, including:climate controlelectric compressorsR12 systemsR134a systemsR1234yf systemshigh and low pressure switchespressure relief valvetemperature sensorssunlight sensorscarbon dioxide sensorszone temperature sensors. |
Inappropriate testing procedures may include: | intrusive testing (which must not be performed as it is not a recommended test and repair method), which includes:back probing terminals and connectors and fuse holders with inappropriate test probesprobing terminal and connectors with inappropriate test probespushing sharp probes and objects into wiring insulation. |
Faults may include: | system containing atmospheric air with moistureelectrical sensor malfunctiondislodged temperature sensor or transfer valvefaulty pressure relief valvevacuum leakair flow restriction or blockagereceiver drier blockageevaporator fan not workingelectrical faultelectrical system fault. |
Repair options may include: | component repair procedures, including:removal, replacement and adjustment proceduresdismantle, repair, re-assembly and adjustment procedures. |
Post-repair testing may include: | validating effectiveness of the repair action, including the following checks:ambient temperaturecentre vent temperaturecondenser and suction line temperaturemanifold gauge pressure readingsrefrigerant leaksconfirming that reported fault has been rectifiedconfirming that no other faults are present as a result of the repair action. |
Information on decal sticker must include: | name of the service organisationquantity of refrigerant addedrefrigerant and oil typeservice datetechnicianâs licence numbervehicle odometer reading. |