- MEM18087B - Service and repair domestic and light commercial refrigeration and air conditioning equipment
Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners
MEM18087B Mapping and Delivery Guide
Service and repair domestic and light commercial refrigeration and air conditioning equipment
Version 1.0
Issue Date: May 2024
Qualification | - |
Unit of Competency | MEM18087B - Service and repair domestic and light commercial refrigeration and air conditioning equipment |
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Description | This unit covers servicing of domestic and light commercial refrigeration and air conditioning equipment and components.It includes interpreting diagrams of refrigeration and air conditioning equipment; utilising basic fault finding procedures, service manifolds and test equipment to identify and diagnose faults in equipment; isolating faulty components including control components; and rectifying common faults. | ||
Employability Skills | This unit contains employability skills. | ||
Learning Outcomes and Application | This unit applies to retrofitting existing domestic and light commercial refrigeration and air conditioning equipment with alternative refrigerants; reconditioning components; returning to service; testing equipment; and completing service reports for administrative action. Prerequisite pathways must be applied within a refrigeration/air conditioning context.Band: AUnit Weight: 6 | ||
Duration and Setting | X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting. |
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Prerequisites/co-requisites | Path 1MEM05006C Perform brazing and/or silver solderingMEM09002B Interpret technical drawingMEM12002B Perform electrical/electronic measurementMEM12023A Perform engineering measurementsMEM18001C Use hand toolsMEM18002B Use power tools/hand held operationsMEM18055B Dismantle, replace and assemble engineering componentsMEM18086B Test, recover, evacuate and charge refrigeration systems | ||
Competency Field | Maintenance and diagnostics |
Development and validation strategy and guide for assessors and learners | Student Learning Resources | Handouts Activities |
Slides PPT |
Assessment 1 | Assessment 2 | Assessment 3 | Assessment 4 | |
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Elements of Competency | Performance Criteria | |||||||
Element: Undertake preventive maintenance checks/adjustment on domestic/light commercial refrigeration/air conditioning |
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Element: Undertake fault finding on domestic/light commercial refrigeration/air conditioning equipment |
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Element: Repair/replace faulty domestic/light commercial refrigeration/air conditioning components |
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Element: Return to service domestic/light commercial refrigeration/air conditioning equipment |
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Evidence Required
List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.
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 service and repair domestic and light commercial refrigeration and air conditioning equipment. 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 servicing of domestic and light commercial refrigeration and air conditioning equipment and components 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 |
Submission Requirements
List each assessment task's title, type (eg project, observation/demonstration, essay, assignment, checklist) and due date here
Assessment task 1: [title] Due date:
(add new lines for each of the assessment tasks)
Assessment Tasks
Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.
Required skills |
Look for evidence that confirms skills in: using tools, techniques and equipment necessary to check refrigeration/air conditioning system components for correct operation obtaining, reading and interpreting specifications comparing component performance/operation against specification identifying faulty components and non-compliances making required adjustments to achieve specifications sourcing and using relevant catalogues/lists applying safety procedures, standard operating procedures and legislative requirements to all work undertaken documenting results of the adjustments reading, interpreting and following information on written job instructions, specifications, standard operating procedures, charts, lists, drawings and other applicable reference documents planning and sequencing operations checking task-related information undertake calculations and numerical operations within the scope of this unit recording and reporting service activities |
Required knowledge |
Look for evidence that confirms knowledge of: preventative maintenance requirements variations in component identities operation and characteristics of range of components procedures for checking refrigeration/air conditioning components for correct operation procedures for identifying components for repair or replacement recovery, containment and storage procedures effect of poor repair practices processes and resources to select replacement parts assembly procedures procedures, tools, techniques and equipment for adjusting refrigeration/air conditioning systems for correct operation and to specification procedures for obtaining authorisation of adjustments outside of operational specifications basic electrical principles, testing and fault identification hazards and control measures associated with the service and repair of domestic and light commercial refrigeration and air conditioning equipment safe work practices and procedures codes and regulations relevant to the refrigeration/air conditioning industry including environmental and ozone and greenhouse substance legislation |
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. | |
Test equipment | Pressure gauges, vacuum gauges, multimeter, ampmeter, megohm meter, vacuum pump |
Preventative maintenance tasks | Check/adjust fan belts, check/clean filters, check/clean heat exchangers (evaporator and condenser), overhaul of major system components, cleaning of major system components, testing operation of all control and safety devices, testing refrigeration charge, testing operational current, testing insulation resistance of relevant electrical components |
Relevant legislation | Noise and environmental regulations. Other applicable Commonwealth, State and Territory regulations and legislation |
Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.
Observation Checklist
Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice | Yes | No | Comments/feedback |
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Visual inspection and testing with appropriate test equipment are carried out according to refrigeration/air conditioning principles, procedures and safety requirements. | |||
Preventative maintenance tasks are performed according to manufacturers' specifications using refrigeration/air conditioning techniques/practices. | |||
Equipment components are identified correctly. | |||
The characteristics and operation of each component is understood. | |||
The operational function of each component is inspected and tested. | |||
Correct operation of each component is assessed against specification. | |||
Faulty components are localised and malfunction is confirmed by inspection and testing using refrigeration and air conditioning principles, procedures and safety requirements. | |||
The refrigerant is removed safely from the system and contained in accordance with standard operating procedures and regulatory requirements where appropriate. | |||
Faulty components are dismantled and repaired/replaced to manufacturers' specifications as required. | |||
Replacement parts are selected from manufacturers' catalogues according to required specifications and relevant legislation. | |||
Components are reassembled and tested for correct operation and assessed against specification. | |||
Using domestic refrigeration/air conditioning principles and system application techniques, correct operation of the equipment is verified. | |||
Maintenance records/service reports are completed by appropriate designated means. |
Forms
Assessment Cover Sheet
MEM18087B - Service and repair domestic and light commercial refrigeration and air conditioning equipment
Assessment task 1: [title]
Student name:
Student ID:
I declare that the assessment tasks submitted for this unit are my own work.
Student signature:
Result: Competent Not yet competent
Feedback to student
Assessor name:
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Date:
Assessment Record Sheet
MEM18087B - Service and repair domestic and light commercial refrigeration and air conditioning equipment
Student name:
Student ID:
Assessment task 1: [title] Result: Competent Not yet competent
(add lines for each task)
Feedback to student:
Overall assessment result: Competent Not yet competent
Assessor name:
Signature:
Date:
Student signature:
Date: