Course Title: Recover, pressure test, evacuate, charge and leak test refrigerants - split systems

Part B: Course Detail

Teaching Period: Term2 2015

Course Code: EEET7328C

Course Title: Recover, pressure test, evacuate, charge and leak test refrigerants - split systems

School: 130T Vocational Engineering

Campus: City Campus

Program: C3312 - Certificate III in Plumbing

Course Contact : Program Manager

Course Contact Phone: +61 3 9925 4468

Course Contact Email:vocengineering@rmit.edu.au


Name and Contact Details of All Other Relevant Staff

Program Manager - Warren James
Tel: +61 3 9925 4632
Email: warren.james@rmit.edu.au

Nominal Hours: 60

Regardless of the mode of delivery, represent a guide to the relative teaching time and student effort required to successfully achieve a particular competency/module. This may include not only scheduled classes or workplace visits but also the amount of effort required to undertake, evaluate and complete all assessment requirements, including any non-classroom activities.

Pre-requisites and Co-requisites

Competency in this unit shall be granted only after competency in the following unit(s) has/have been confirmed.
UEENEEJ102A Prepare and connect refrigerant tubing and fittings
UEENEEE101A Apply Occupational Health and Safety regulations, codes and practices in the workplace
 

Course Description

This competency standard unit covers the recovery of refrigerant, pressure and leak testing, evacuation and refrigerant charging in split air conditioning and heat pump systems. It encompasses working safely and to standards, following regulations and industry practices for handling refrigerants and completing the necessary documentation.

Note: The Ozone Protection and Synthetic Greenhouse Gas Legislation Amendment Bill 2003 may apply to this competency standard unit. Prior to planning the delivery of any training and/or assessment activities all legislative and regulatory requirements shall be identified and included.

The skills and knowledge described in this unit may, in some States/Territories, require a license to practice in the workplace subject to regulations for undertaking refrigeration and air conditioning work. Practice in workplace and during training is also subject to regulations directly related to occupational health and safety and where applicable contracts of training such as apprenticeships.

Note:
1.The Ozone Protection and Synthetic Greenhouse Gas Legislation Amendment Bill 2003 may apply to this unit. Prior to planning the delivery of any training and/or assessment activities all legislative and regulatory requirements shall be identified and included.
2.Compliance with permits may be required in various jurisdictions and typically relates to the operation of plant, machinery and equipment such as elevating work platforms, powder operated fixing tools, power operated tools, vehicles, road signage and traffic control, lifting equipment. Permits may also be required for some work environments such as confined spaces, working aloft, near live electrical apparatus and site rehabilitation.
3.Compliance may be required in various jurisdictions relating to currency in First Aid, confined space, lifting and risk safety measures


National Codes, Titles, Elements and Performance Criteria

National Element Code & Title:

UEENEEJ172A Recover, pressure test, evacuate, charge and leak test refrigerants - split systems

Element:

1. Prepare to recover refrigerants, pressure and leak test, evacuate and charge split systems.

Performance Criteria:

1.1
OHS procedures for a given work area are identified, identified, obtained and understood

1.2
Established OHS risk control measures and procedures are followed in preparation for the work.

1.3
Safety hazards which have not previously been identified are noted and established risk control measures are implemented.


1.4
The nature of the problem is obtained from documentation or from work supervisor to establish the scope of work to be undertaken.


1.5
The work is appropriately sequenced in accordance with job schedule.


1.6
Appropriate personnel are consulted to ensure the work is coordinated effectively with others involved on the work site.


1.7
Refrigerants, lubricants and cleaning materials needed for the work are obtained in accordance with established procedures and checked against job requirements


1.8
Tools, equipment and testing devices needed to carry out the work are obtained and checked for correct operation and safety


1.9
Preparatory work is checked to ensure no damage has occurred and complies with requirements.

Element:

2. Recover refrigerants, pressure and leak test, evacuate and charge split systems.

Performance Criteria:

2.1
OHS risk control measures and procedures for carrying out the work are followed

2.2
Checks are carried out to ensure the system or component parts are isolated, when necessary, in strict accordance with OHS requirements and procedures

2.3
Machines/plant are checked as being isolated where necessary in strict accordance OHS requirements and procedures and circuits are isolated and confirmed by appropriately competent personnel


2.4
Refrigerants are removed from a split system safely into suitably labelled containers in accordance with regulatory requirements and industry practices, and any electrical work is referred to an appropriate licensed person


2.5
Precautions are taken to prevent damage to components while pressure testing the system


2.6
Pressure testing is conducted using dry nitrogen at a pressure relative to the refrigerant to be used


2.7
Leaks are located and rectified using testing methods appropriate to the system under test and in accordance with industry practices


2.8
Split system is evacuated to the required level and cleaned the system of all moisture and other containments in accordance with industry practices


2.9
A 'Drop test' is used to prove effectiveness of the evacuation in accordance with industry practice using an appropriate electronic vacuum gauge


2.10
Components lubricants are checked and maintained in accordance with manufacturer's requirements


2.11
Split systems are charged with the appropriate refrigerant in accordance with manufacturer's requirements and industry practices


2.12
Problematic situations that arise during the work are dealt with in an appropriate manner


2.13
Split systems are pressure and leak tested, evacuated and charged efficiently without unnecessary waste of materials or damage to apparatus and the surrounding environment or services and using sustainable energy practices

Element:

3. Complete and report refrigerants recovery, pressure and leak test and evacuate and charge work

Performance Criteria:

3.1
OHS risk control work completion measures and procedures are followed

3.2
Work site is cleaned and made safe in accordance with established procedures


3.3
Contaminated refrigerant is dealt with in accordance with legislative/regulatory requirements


3.4
Completion of the work is documented and an appropriate person or persons notified in accordance with established procedures

Learning Outcomes


Refer to Elements


Details of Learning Activities

Learning activities include in class workbook activities and researching industry practices and standards. This may include online learning activities. Students are expected to undertake design, size and documentation to relevant industry standards to include sustainability and WHS principles.


Teaching Schedule

This unit is delivered over 2 sessions

Session Number Topic                                                      Learning Activities/Resource Elements/Performance criteria Assessments                 
1 Theory of  Recover, pressure test, evacuate, charge and leak test refrigerants - split systems RMIT Refrigeration manual. 1.1, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9.  
1 cont’d Swms, Underpinnings, Formative tasks Students complete Swms, underpinning questions in student recording book. 1.2, 2.1, .2., 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 2.10, 2.11, 2.12, 2.13. Assessment 1- Submit Swms, work book, underpinning questions.
2 Practical task- Recover, pressure test, evacuate, charge and leak test refrigerants - split systems Students Recover, pressure test, evacuate, charge and leak test refrigerants - split systems using tools and equipment in workshop. Student recording book required for self assessment. 3.1, 3.2, 3.3, 3.4. Assessment 2- Practical installation of task .
         


Learning Resources

Prescribed Texts

Learning activities include in class workbook activities and researching industry practices and standards. This may include online learning activities. Students are expected to undertake design, size and documentation to relevant industry standards to include sustainability and WHS principles.


References


Other Resources


Overview of Assessment

Assessment may incorporate a variety of methods including written/oral activities and demonstration of practical skills to the relevant industry standards. Participants are advised that they are likely to be asked to personally demonstrate their assessment activities to their teacher/assessor. Feedback will be provided throughout the course.


Assessment Tasks

Students are required to complete 2 different types of assessment tasks
Assessment 1- Submit workbook underpinning questions and completed Swms (weighting 30%)
Assessment 2- Practical installationof tasks . (weighting 70%)
To successfully complete this unit, a student needs to be deemed competent (CA grade) in both assessment tasks.
Grading Criteria:
NYC - Not yet competent
CA - Competence Achieved
DNS - Did not submit assessment


Assessment Matrix

Assessment task                                            Element/PC                                                                                   Percentage weighting
Assessment 1- Written tasks from workbook 1.1, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 1.2, 2.1, .2., 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 2.10, 2.11, 2.12, 2.13. 30%
Assessment 2- Practical installation of 3.1, 3.2, 3.3, 3.4. 70%

Other Information

Academic Misconduct

Students are reminded that cheating, whether by fabrication, falsification of data, or plagiarism, is an offence subject to University disciplinary procedures. Plagiarism in oral or written presentations is the presentation of the work, idea or creation of another person, without appropriate referencing, as though it is one’s own. Plagiarism is not acceptable.
The use of another person’s work or ideas must be acknowledged. Failure to do so may result in charges of academic misconduct which carry a range of penalties including cancellation of results and exclusion from your course.
Students are responsible for ensuring that their work is kept in a secure place. It is also a disciplinary offence for students to allow their work to be plagiarized by another student.
Students should be aware of their rights and responsibilities regarding the use of copyright material. It is strongly recommended that students refer to the Guidelines for Students at the RMIT University Homepage.

Course Overview: Access Course Overview