Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners

UEERA0063 Mapping and Delivery Guide
Recover, pressure test, evacuate, charge and leak test refrigerants - appliances

Version 1.0
Issue Date: May 2024


Qualification -
Unit of Competency UEERA0063 - Recover, pressure test, evacuate, charge and leak test refrigerants - appliances
Description
Employability Skills
Learning Outcomes and Application This unit involves the skills and knowledge required to recover refrigerants, conduct pressure and leak tests, and evacuate and charge refrigerants in a self-contained appliance. This includes flammable and non-flammable refrigerants.Competency in this unit requires the ability to work safely, prepare for and implement the recovery of refrigerants, undertake pressure and leak testing, perform evacuations and charging of refrigeration appliances as well as completing all required documentation.Individuals will typically work independently to safely handle refrigerants used in appliances.To undertake this unit, the learner must have a Trainee Refrigerant Handling Licence as it includes work on refrigeration and air conditioning equipment that carries the risk of a fluorocarbon refrigerant being emitted.The skills and knowledge described in this unit may require a national Refrigerant Handling Licence as it includes work on refrigeration and air conditioning equipment that carries the risk of a fluorocarbon refrigerant being emitted while decanting the refrigerant or manufacturing, installing, commissioning, servicing, maintaining or decommissioning refrigeration and air conditioning equipment.The skills and knowledge described in this unit require a licence or permit to practice in the workplace where work is carried out on electrical installations which are designed to operate at voltages greater than 50 volt (V) alternating current (a.c.) or 120 V direct current (d.c.). Competency development activities in this unit are subject to regulations directly related to licensing. Where a licence or permit to practice is not held, a relevant contract of training, such as an Australian Apprenticeship, is required. Additional and/or other conditions may apply in some jurisdictions subject to regulations related to electrical work. Practice in the workplace and during training is also subject to work health and safety (WHS)/occupational health and safety (OHS) regulations.
Duration and Setting X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.

Assessors must hold credentials specified within the Standards for Registered Training Organisations current at the time of assessment.

Assessment must satisfy the Principles of Assessment and Rules of Evidence and all regulatory requirements included within the Standards for Registered Training Organisations current at the time of assessment.

Assessment must occur in workplace operational situations where it is appropriate to do so; where this is not appropriate, assessment must occur in simulated workplace operational situations that replicate workplace conditions.

Assessment processes and techniques must be appropriate to the language, literacy and numeracy requirements of the work being performed and the needs of the candidate.

Resources for assessment must include access to:

a range of relevant exercises, case studies and/or other simulations

relevant and appropriate materials, tools, equipment and personal protective equipment (PPE) currently used in industry

applicable documentation, including workplace procedures, industry standards, equipment specifications, regulations, codes of practice and operation manuals.
Prerequisites/co-requisites
Competency Field Refrigeration and air-conditioning
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: Prepare to recover refrigerants, pressure and leak test, evacuate and charge refrigeration appliance
  • WHS/OHS hazards, risk control methods, relevant standards, codes and legislation are obtained and applied in accordance with workplace procedures
       
Element: Safety hazards which have not previously been identified are noted and risk control measures implemented in accordance with workplace procedures
       
Element: Extent of work to be completed is determined from documentation and/or discussion with supervisor/appropriate person/s in accordance with workplace procedures
       
Element: Work is sequenced in accordance with job schedule and workplace procedures
       
Element: Appropriate person/s is consulted, as required, to ensure work is coordinated with others
       
Element: Refrigerants, lubricants and cleaning materials are obtained in accordance with workplace procedures
       
Element: Tools, equipment and testing devices are obtained in accordance with workplace procedures and checked for operational safety
       
Element: Recover refrigerants, pressure and leak test, evacuate and charge refrigeration appliance
  • Checks are carried out to ensure system or component parts are isolated, when necessary, in accordance with workplace procedures and WHS/OHS requirements
       
Element: Circuits, machines and plant are checked as being isolated, where necessary, in accordance with workplace procedures and WHS/OHS requirements
       
Element: Refrigerant is removed from appliance safely and is placed into labelled containers in accordance with workplace procedures and regulatory requirements
       
Element: Precautions are taken in accordance with workplace procedures to prevent damage to components while pressure testing appliance
       
Element: Pressure testing is conducted in accordance with workplace procedures using dry nitrogen at a pressure relative to refrigerant used
       
Element: Leaks are located and rectified using testing methods appropriate to the appliance under test in accordance with workplace procedures
       
Element: Appliance is evacuated to required level and is cleaned of all moisture and other contaminates in accordance with workplace procedures
       
Element: A 'drop test' is used to test effectiveness of evacuation in accordance with workplace procedures using an appropriate electronic vacuum gauge
       
Element: Components and lubricants are checked and maintained in accordance with workplace procedures and manufacturer specifications
       
Element: Appliance is charged with appropriate refrigerant in accordance with workplace procedures and manufacturer specifications
       
Element: Problematic situations are resolved in accordance with workplace procedures and are referred to a supervisor
       
Element: Appliance is pressure and leak tested, evacuated and charged without waste of materials or damage to apparatus, the surrounding environment and/or services using relevant sustainable energy practices in accordance with workplace procedures
       
Element: Complete and report on refrigerants recovery pressure and leak test and evacuate and charge work
  • Worksite and equipment are cleaned and made safe in accordance with workplace procedures
       
Element: Contaminated refrigerant is dealt with in accordance with workplace procedures and legislative/regulatory requirements
       
Element: Completion of work is documented and an appropriate person/supervisor is notified in accordance with workplace procedures
       


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.

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions on at least two separate occasions and include:

applying legislation, industry standards, codes of practice and regulations

applying relevant work, health and safety (WHS)/occupational health and safety (OHS) requirements, including:

applying safe working practices

identifying hazards

implementing safe handling procedures

using risk control measures

completing and reporting on work activities

preparing to recover refrigerants, pressure and leak test, evacuate and charge refrigeration appliances

recovering refrigerants, pressure and leak testing, evacuating and charging refrigerant appliance, including:

completing documentation

conducting pressure testing at appropriate pressure level without damaging components

dealing with unplanned events/situations in accordance with workplace procedures in a manner that minimises risk to personnel and equipment

evacuating system to required level

evacuating system to required standard using vacuum measuring instruments

locating and rectifying leaks

removing and storing refrigerant

using flammable and non-flammable refrigerants

selecting materials and equipment

using manufacturer specifications and manuals.

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions and include knowledge of:

flammable and non-flammable refrigerants

recover, pressure and leak test, evacuate and charge refrigerant appliances, including:

refrigerant properties

safe handling practices

refrigeration oil recovery and reclaim procedures

pressure testing

leak detection

evacuation and dehydration

refrigerant and oil charging

system contamination

refrigeration component replacement

relevant legislation, industry standards, codes of practice and regulations

relevant manufacturer specifications

relevant risk mitigation processes, including:

safe working practices

potential hazards

risk control measures

relevant WHS/OHS legislated requirements

relevant workplace documentation

relevant workplace policies and procedures.

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.

Range is restricted to essential operating conditions and any other variables essential to the work environment.

Non-essential conditions may be found in the UEE Electrotechnology Training Package Companion Volume Implementation Guide.

Recovering, pressure testing, evacuating, charging and leak testing refrigerants must include testing and charging refrigeration or air conditioning appliances using vacuum measuring instruments and include the following:

recovering refrigerant from an existing appliance that may contain contaminants

pressure and leak testing a newly installed or repaired appliance

evacuating an appliance in preparation for charging with refrigerant

charging an appliance with refrigerant with minimal loss

flammable and non-flammable refrigerants

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
WHS/OHS hazards, risk control methods, relevant standards, codes and legislation are obtained and applied in accordance with workplace procedures 
 
 
 
 
 
 
Checks are carried out to ensure system or component parts are isolated, when necessary, in accordance with workplace procedures and WHS/OHS requirements 
 
 
 
 
 
 
 
 
 
 
 
Worksite and equipment are cleaned and made safe in accordance with workplace procedures 
 
 

Forms

Assessment Cover Sheet

UEERA0063 - Recover, pressure test, evacuate, charge and leak test refrigerants - appliances
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

UEERA0063 - Recover, pressure test, evacuate, charge and leak test refrigerants - appliances

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: