Unit of competency Outline
Date retreived
22/07/2026 6:26 PM AWST
22/07/2026 6:26 PM AWST
Whilst all efforts are made to provide accurate and timely information from the relevant source/documentation, please be aware that the information supplied may not be the most current version. The accuracy of the detail has not been confirmed by the Department and therefore should not be relied upon without first confirming the contents.
Maintain and repair commercial and/or industrial refrigeration and/or air conditioning controls
Maintain and repair commercial and/or industrial refrigeration and/or air conditioning controls
Unit of competency
National Code
MEM18092B
MEM18092B
State Code
W5629
W5629
TGA Status
Replaced
Replaced
DTWD Status
Transition (Replaced)
Transition (Replaced)
State Implementation and Classification
Approved Date
11/09/2006
Field of Education
031315 - Refrigeration And Air Conditioning Mechanics
Original Release Date
11/09/2006
Nominal Hours
54
Description
This unit covers repairing or replacing commercial and/or industrial refrigeration and/or commercial air conditioning controls.
Notes
Elements and Performance Criteria
1. Install/replace refrigeration/air conditioning controls
- 1.1. Refrigeration/air conditioning control principles and system diagrams are interpreted.
- 1.2. Control circuit components are identified and inspected for compliance to specification.
- 1.3. Sequential installation is undertaken according to manufacturers' specifications and standard operating procedures.
2. Check and adjust refrigeration/air conditioning control sequence and operation
- 2.1. The temperature, quality, pressure and properties of the air delivered by the air conditioning system are checked for conformance to specification.
- 2.2. Controls operation is checked against operational specifications using appropriate test equipment and application principles/techniques.
- 2.3. Adjustments are performed to control sequence to meet/align to operational requirements and specifications.
- 2.4. Modifications/alterations are recorded and reported in accordance with standard operating procedures.
- 2.5. Controls operation is checked and returned to service to specification.
3. Fault find refrigeration/air conditioning control circuits
- 3.1. Control circuit diagrams and data sheets are interpreted.
- 3.2. Control circuit components are identified and inspected.
- 3.3. Control circuit is traced and action of components is diagnosed to identify and localise faults.
- 3.4. Control circuit parts are tested using appropriate test equipment and application principles.
- 3.5. Control circuit parts are assessed against operational specification.
- 3.6. Fault condition is localised at the component level.
- 3.7. Faulty condition is evaluated, root cause is analysed and corrective action is planned.
4. Maintain, repair/replace control components
- 4.1. Correct maintenance procedures are applied according to standard operating procedures.
- 4.2. Repair procedures are selected and applied using correct and appropriate techniques, tools and equipment.
- 4.3. Faulty items are tested, repaired or replaced using sequential installation procedures according to manufacturers' specifications.
- 4.4. Replacement items are selected from manufacturers' catalogues to meet specification.
- 4.5. Control components are reassembled using appropriate principles and procedures according to specification.
5. Check and adjust sequence of refrigeration/air conditioning controls
- 5.1. Sensors and controllers are identified using circuit diagram and refrigeration/air conditioning system control principles.
- 5.2. Necessary adjustments to sequence control circuit are made to meet operational specification.
- 5.3. Correct operation of control circuit is checked and confirmed against operational specification.
- 5.4. Refrigeration/air conditioning controls are returned to service to specification.
- 5.5. Appropriate follow-up procedures are adopted.
- 5.6. Service/maintenance report is completed to standard operating procedures.
RANGE STATEMENT
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.
Appropriate test equipment
Pressure gauges, multimeters, ampmeters, megohm meter, analyser
Modifications/alterations
Pressure control settings, timer settings, thermostat settings
Must comply with manufacturers' specifications, and all changes in site drawings/documents should be documented
Corrective action
Replacement, repair, adjustment
Maintenance procedures
Overhaul of major system components, cleaning of major system components, testing operation of all control and safety devices
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.
Appropriate test equipment
Pressure gauges, multimeters, ampmeters, megohm meter, analyser
Modifications/alterations
Pressure control settings, timer settings, thermostat settings
Must comply with manufacturers' specifications, and all changes in site drawings/documents should be documented
Corrective action
Replacement, repair, adjustment
Maintenance procedures
Overhaul of major system components, cleaning of major system components, testing operation of all control and safety devices
EVIDENCE GUIDE
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.
Overview of assessment
A person who demonstrates competency in this unit must be able to maintain and repair commercial and/or industrial refrigeration and/or air conditioning controls. 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 the repair/replacement of commercial and/or industrial refrigeration and/or commercial air conditioning controls, 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's 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
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.
Overview of assessment
A person who demonstrates competency in this unit must be able to maintain and repair commercial and/or industrial refrigeration and/or air conditioning controls. 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 the repair/replacement of commercial and/or industrial refrigeration and/or commercial air conditioning controls, 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's 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
Replaced By
| State Code | National Code | Title | Type |
|---|---|---|---|
| OAU37 | MEM18092 | Maintain and repair commercial and/or industrial refrigeration and/or air conditioning controls | Unit of competency |
| State Code | National Code | Title | Type |
|---|---|---|---|
| W245 | MEM40105 | Certificate IV in Engineering | Qualification |
| W247 | MEM50105 | Diploma of Engineering - Advanced Trade | Qualification |
| W237 | MEM30205 | Certificate III in Engineering - Mechanical Trade | Qualification |
| W726 | LMT31909 | Certificate III in Engineering - TCF Mechanic | Qualification |