Elements and Performance Criteria

Stream: Production Plant
Field: Maintenance
Equivalencies: This unit of competence is based on unit 7.2 of the Electrical Contractors
Industry Association Competency Standards (refrigeration and air
conditioning stream)
Inspection should be planned with the appropriate parties to determine access, conditions and work requirements
Equipment may include air conditioning (refrigerated and evaporative), water coolers, packaged air conditioners, refrigerators, split system air conditioners, cool rooms, constant temperature baths, refrigerant air driers, central air conditioning cooling systems and industrial process freezers
Materials may include solvents, insulation tape, contact cleaners, heat shrink, vacuum pumps, gas recovery units and gas bottles
Components may include fuses/circuit breakers, overloads, indicator lamps, plugs, residual current devices, earth leakage circuit breakers, light emitting/power diodes, ultra-sonic level/proximity flow rate sensors, magnetic level switches and plate heater exchange/liquid receiver/liquid injection/TX valve controllers and uninterrupted power supplies
Test and measurement instruments may include manifold gauges, thermometers, insulation testers, voltmeters, ammeters and refrigerant detectors
Fault finding and diagnostic techniques may include linear approach, half split rule, sensory detection andinsulation/continuity tests
Tests and operational checks may include correct air circulation, drainage, vibration, correct temperature, noise, pressure checks and leak detection
Work may be performed with equipment on line
Work completion details may include plant and maintenance records, job cards, check sheets and on device labelling updates
Work site environment may be affected by nearby plant or processes, e.g. heat, noise, dust, oil, water and chemical
Isolations can refer to electrical/mechanical or other associated processes

Critical aspects of evidence
The knowledge and application of relevant sections of: Occupational, health and safety legislation; Statutory legislation; Enterprise/site safety procedures; Enterprise/site emergency procedures
Preparation and planning of work
Verification techniques
Diagnostic and fault finding techniques and procedures
Attainment of electrical licence, where appropriate, deeming competency associated with electrical work
Repair techniques and procedures
Completion of work procedures
Context of assessment
Competency Standards should be assessed in the workplace or simulated workplace and under the normal range of workplace conditions
Assessment of this unit will be supported with documentary evidence, by means of endorsement stating type and application of work
Interdependent assessment of unit
Nil
Knowledge and Skills
A knowledge of:
Occupational health and safety standards; Relevant statutory requirements and codes of practice; Relevant Australian standards; Equipment and material required to perform the work; Isolation procedures; Layout of plant/work site and operation of its equipment; Fault finding and diagnostic techniques; Repair techniques; Complex air conditioning and refrigeration equipment; Environmental legislation; Regulatory procedures; Electrical principles; Test and measurement instruments; Circuit plan appreciation; Engineering and workshop practice; Communication principles ; Refrigerant gases
The ability to:
Apply occupational health and safety standards; Follow relevant statutory regulations and codes of practice; Apply relevant Australian standards; Use plans, drawings and texts; Use test and measurement instruments; Use fault finding and diagnostic techniques; Determine the cause of faults; Repair faults; Recover refrigerant gases; Select materials for the job; Apply regulatory procedures; Apply electrical principles; Communicate effectively ; Apply data analysis techniques and tools.