- MEM18086B - Test, recover, evacuate and charge refrigeration systems
Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners
MEM18086B Mapping and Delivery Guide
Test, recover, evacuate and charge refrigeration systems
Version 1.0
Issue Date: April 2024
| Qualification | - |
Unit of Competency | MEM18086B - Test, recover, evacuate and charge refrigeration systems |
|---|---|---|---|
| Description | This unit covers testing, recovering, evacuating and charging refrigeration systems to achieve performance specification. | ||
| Employability Skills | This unit contains employability skills. | ||
| Learning Outcomes and Application | This unit applies to refrigeration systems associated with refrigeration and air conditioning, including commercial, industrial, domestic, marine and transport applications.The application of this competency must cover a variety of refrigeration equipment and systems.Demonstration of competency must be in accordance with Australian Standards, including AS - HB40 Refrigeration and Air Conditioning codes of practice, and relevant ozone and greenhouse substance legislation.Band: AUnit Weight: 4 | ||
| Duration and Setting | X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting. |
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| Prerequisites/co-requisites | Path 1MEM09002B Interpret technical drawing MEM12023A Perform engineering measurements MEM18001C Use hand tools MEM18002B Use power tools/hand held operations MEM18055B Dismantle, replace and assemble engineering components | ||
| 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 | |
|---|---|---|---|---|---|---|---|---|
| Elements of Competency | Performance Criteria | |||||||
| Element: Assess refrigeration system operation |
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| Element: Recover refrigerant and evacuate system |
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| Element: Charge the refrigeration system |
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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 test, recover, evacuate and charge refrigeration systems. 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 assessment, evacuation and charging of refrigeration systems, 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: planning and sequencing operations developing operating procedures for equipment as required selecting correct refrigerant for a given system obtaining and interpreting drawings, instructions, specifications, procedures, codes and regulations testing and checking refrigeration components and systems including electrical safety checks and tests checking for conformance to specifications undertaking numerical operations within the scope of this unit determining pressures and temperatures documenting test results and procedures undertaken using equipment and test techniques identifying faulty components and system contamination applying safety procedures, standard operating procedures and legislative requirements to all work undertaken selecting appropriate materials, equipment and solutions for specific refrigeration systems |
Required knowledge |
Look for evidence that confirms knowledge of: operating principles of refrigeration systems characteristics, properties and operating specifications of each type of refrigerant safety precautions and work practices to be undertaken when handling or working with refrigerants methods of identifying stored refrigerants methods of identifying the type of refrigerant used in refrigeration systems relevant codes and regulations applying to refrigeration systems procedures and safety precautions for testing/checking refrigeration systems corrective actions for system and component faults including appropriate basic electrical safety checks types of leak detection equipment/techniques and their applications causes of contamination in refrigeration systems and their effect on refrigeration system performance procedures, tools and equipment to be used to clean up contaminated systems care and use of vacuum pumps tools, techniques and equipment required to carry out recovery procedures procedures for storing/disposing of recovered refrigerant consequences of releasing quantities of refrigerant into the atmosphere procedures for charging refrigeration systems correct refrigerant for a range of given applications tools, techniques and equipment required to charge a refrigeration system with refrigerant precautions to be taken when charging by various methods, refrigeration systems with refrigerant procedures for checking level and adding lubricating oil properties and uses of refrigeration oil hazards and control measures associated with handling refrigerants, including housekeeping safe work practices and procedures |
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. | |
Relevant information | Manufacturers' technical data, pressure temperature charts, operating manuals |
Appropriate operating procedures | In the case where specific equipment does not have standard operating procedures |
Appropriate corrective action | Isolation and tagging of faulty components, repair and/or replacement |
Contamination | Moisture, non-condensables, solids, acids etc. |
Refrigerant | All refrigerants including CFCs, HCFCs, HFCs, natural refrigerants, ammonia, etc. |
Relevant codes and regulations | Australian Standards Refrigeration and Air Conditioning codes of practice, relevant ozone and greenhouse substance 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 |
|---|---|---|---|
| Refrigeration system operating principles and terminology are applied to assessment activities. | |||
| All relevant information is obtained and correctly interpreted prior to the commencement of work on the refrigeration system. | |||
| Refrigeration system checks are undertaken safely in accordance with standard operating procedures, relevant codes and regulations. | |||
| Appropriate operating procedures are developed as required. | |||
| Pressures and temperatures are correctly determined and recorded. | |||
| Faults are correctly isolated to component level and appropriate corrective action is determined. | |||
| The refrigeration system is checked for leaks. | |||
| The refrigeration system is checked for contamination. | |||
| The refrigerant in the system is recovered in accordance with standard operating procedures, codes and regulations. | |||
| The refrigerant recovered from the refrigeration system is contained in accordance with the relevant codes and regulations. | |||
| The refrigeration system is evacuated in accordance with standard operating procedures, codes and regulations. | |||
| The refrigeration system is charged with the correct refrigerant in accordance with standard operating procedures. | |||
| The appropriate lubricating oil is added to the refrigeration system in accordance with standard operating procedures. | |||
| The refrigeration system is checked for leaks. |
Forms
Assessment Cover Sheet
MEM18086B - Test, recover, evacuate and charge refrigeration systems
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:
Signature:
Date:
Assessment Record Sheet
MEM18086B - Test, recover, evacuate and charge refrigeration systems
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: