Modification History
Prerequisite unit MEM05006B updated to MEM05006C
Unit Descriptor
Unit descriptor |
This unit covers installing, servicing and repairing domestic air conditioning and refrigeration appliances to relevant standards, codes and local regulations. |
Application of the Unit
Application of the unit |
This competency is limited to domestic air conditioning and refrigeration systems only. It includes the application of safe working practices, following standard procedures to perform functional checks, test system performance and carry out straightforward maintenance. This unit refers to plug in appliances only. For hard wired installations a licensed electrical tradesperson must undertake connection and disconnection. Aspects of this unit may require a restricted electrical license in some jurisdictions. Band : A Unit Weight : 6 |
Licensing/Regulatory Information
Not Applicable
Pre-Requisites
Prerequisite units |
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Path 1 |
MEM05006C |
Perform brazing and/or silver soldering |
MEM12002B |
Perform electrical/electronic measurement |
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MEM12023A |
Perform engineering measurements |
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MEM18001C |
Use hand tools |
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MEM18002B |
Use power tools/hand held operations |
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MEM18055B |
Dismantle, replace and assemble engineering components |
Employability Skills Information
Employability skills |
This unit contains employability skills. |
Elements and Performance Criteria Pre-Content
Elements describe the essential outcomes of a unit of competency. |
Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold italicised text is used, further information is detailed in the required skills and knowledge section and the range statement. Assessment of performance is to be consistent with the evidence guide. |
Elements and Performance Criteria
ELEMENT |
PERFORMANCE CRITERIA |
1. Install and remove domestic refrigeration and air conditioning appliances |
1.1. Appliance location is identified and sited in accordance with customer requirements, regulations, standards, codes of practice and industry guidelines 1.2. Site is prepared for installation of appliance 1.3. Appliance is installed and secured in accordance with manufacturer instructions and industry best practice 1.4. Operation of the appliance is checked in accordance with manufacturer instructions 1.5. Waste materials and products are disposed of in accordance with Commonwealth and State legislation, environmental and industry codes of practice |
2. Determine operating condition of domestic refrigeration and air conditioning appliances |
2.1. Established procedures and standard electrical tests are carried out to determine actual operating condition 2.2. Established OHS risk control measures and procedures are followed to enable the system to be isolated and checked where necessary 2.3. Tools, equipment and testing devices needed to determine the basic refrigeration operating conditions are obtained and checked for correct operation and safety 2.4. Industry codes of practice and manufacturer service instructions are followed |
3. Carry out routine maintenance of domestic refrigeration and air conditioning appliances |
3.1. Safety hazards are identified and recorded and established risk control measures implemented 3.2. Routine maintenance procedure is performed as per manufacturer and client scheduling 3.3. Routine maintenance records are maintained and faults recorded |
4. Fault-find and troubleshoot domestic refrigeration and air conditioning appliance faults |
4.1. OHS requirements are determined 4.2. Equipment and testing devices needed to determine fault are selected 4.3. Apply standard test procedures to determine faults against equipment specifications 4.4. Test data and faults are recorded as required |
5. Replace, repair or service faulty components in domestic refrigeration and air conditioning appliances |
5.1. Plug in appliance is electrically disconnected or arrangements made for appropriately licensed person to isolate hard-wired appliances 5.2. Electrical components are replaced in accordance with manufacturer recommendation and industry best practice 5.3. Refrigeration system replacement components are selected and prepared 5.4. Refrigerants are recovered, stored and disposed of in accordance with Commonwealth legislation and industry codes of practice 5.5. Refrigeration system components are installed in accordance with industry best practice, standards and codes 5.6. Refrigeration system is returned to operating condition using standard refrigeration return to service procedures |
6. Return to service domestic refrigeration and air conditioning appliances |
6.1. Standard electrical tests are applied to identify electrical faults before operating 6.2. Appliance is started and operated in accordance with manufacturer standards 6.3. Standard tests are carried out to confirm system performance to manufacturer specifications 6.4. Appliance operating data is recorded as required 6.5. Worksite is cleaned and left in presentable condition in accordance with original presentation, client requirements, industry standards and organisational requirements |
Required Skills and Knowledge
REQUIRED SKILLS AND KNOWLEDGE |
This section describes the skills and knowledge required for this unit. |
Required skills |
Look for evidence that confirms skills in:
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Required knowledge |
Look for evidence that confirms knowledge of:
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Evidence Guide
EVIDENCE GUIDE |
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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. |
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Overview of assessment |
A person who demonstrates competency in this unit must be able to install service and repair domestic refrigerators and air conditioners 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 installing, servicing and repairing domestic refrigerators and air conditioners or 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
RANGE STATEMENT |
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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, 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. |
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Routine maintenance |
Electrical testing of the appliance, polarity testing, cleaning condensers, clearing drains, checking temperatures, pressures, component operation, air flow and system capacity, cleaning filters. |
Standard electrical tests |
Earth continuity, Insulation resistance, and Circuit resistance to meet electrical equipment regulations and codes (AS3000). Testing of supply voltage and the appliance or individual component current draw. |
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. |
Industry best practice |
Pipe fabrication techniques and industry best practice for pipe brazing. |
Standard refrigeration return to service procedures |
Leak detection, evacuation, and refrigerant charging of domestic air conditioning and refrigeration plug in appliances. |
Commonwealth , State and Territory legislation , regulations , standards and codes of practice , industry guidelines |
The Ozone Protection and Synthetic Greenhouse Gas Legislation Amendment Bill 2003; air conditioning residential best practice guidelines (AIRAH); State and local building regulations; Codes of Practice for domestic refrigeration and air conditioning. (HB40) |
System performance |
Pressure; temperature; sub cooling; superheating; evaporator coil to air temperature difference |
Domestic refrigeration and air conditioning appliances |
Self contained plug in appliances primarily designed for domestic and residential situations:
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Unit Sector(s)
Unit sector |
Co-requisite units
Co-requisite units |
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Competency field
Competency field |
Installation and commissioning |