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

UEERA0033 Mapping and Delivery Guide
Diagnose faults in complex HVAC/refrigeration control systems

Version 1.0
Issue Date: May 2024


Qualification -
Unit of Competency UEERA0033 - Diagnose faults in complex HVAC/refrigeration control systems
Description
Employability Skills
Learning Outcomes and Application This unit involves the skills and knowledge required to diagnose and rectify faults in complex heating, ventilation and air conditioning (HVAC) or refrigeration control systems.It includes applying safe working practices, interpreting technical data and applying knowledge of complex refrigeration or HVAC control system operating parameters to logical fault-finding processes. It also includes implementing fault rectification, safety and functional testing; and completing and reporting fault diagnosis and rectification activities and outcomes.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, skills and knowledge described in this unit require a relevant contract of training, such as an Australian Apprenticeship.Additional and/or other conditions may apply in some jurisdictions subject to regulations related to refrigeration, air conditioning or electrical work. Practice in the workplace and during training is also subject to work health and safety (WHS)/occupational health and safety (OHS) regulations.Permits may also be required for some work environments, such as confined spaces, working aloft, near live electrical apparatus and site rehabilitation.
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 suitable workplace operational situations where it is appropriate to do so; where this is not appropriate, assessment must occur in simulated suitable 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 simulations

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

applicable documentation, including workplace procedures, 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 diagnose and rectify faults
  • WHS/OHS requirements and workplace procedures are identified, obtained and applied
       
Element: WHS/OHS risk control measures and procedures are followed
       
Element: Hazards not previously identified are documented and risk control measures devised and implemented in consultation with relevant person/s
       
Element: Extent of faults are determined from reports/documentation and/or discussions with relevant person/s
       
Element: Relevant person/s is consulted to ensure work is coordinated effectively with others involved on the worksite
       
Element: Tools, equipment and testing devices required to diagnose faults are obtained and checked for correct operation and safety in accordance with workplace procedures
       
Element: Diagnose and rectify faults
  • WHS/OHS risk control measures and workplace procedures for carrying out the work are followed
       
Element: Need to test and measure live work is determined in accordance with workplace procedures and WHS/OHS requirements
       
Element: Circuits/machines/plant are checked and isolated in accordance with workplace procedures and WHS/OHS requirements
       
Element: Logical diagnostic methods, measurements and estimations are applied to diagnose control system faults in accordance with system operating parameters and operational requirements
       
Element: Suspected fault sources are tested to confirm source of system problems
       
Element: Fault causes are identified and appropriately competent person/s engaged to rectify the fault where it is outside the scope of the control system
       
Element: Faults in system components are rectified to return the refrigeration or HVAC system to its operational standard
       
Element: System is tested to verify that the system operates as intended and to specified requirements and operational standards
       
Element: Methods for resolving unplanned events are discussed with appropriate person/s in accordance with job specifications and requirements
       
Element: Methods for resolving unplanned situations are selected on the basis of safety and specified work outcomes
       
Element: Diagnosis and rectification activities are conducted without waste of materials, damage to apparatus, the surrounding environment and/or services using sustainable energy practices
       
Element: Complete and report fault diagnosis and rectification activities
  • WHS/OHS work completion risk control measures and workplace procedures are followed
       
Element: Worksite is made safe in accordance with workplace safety procedures
       
Element: Fault diagnosis and rectification activities are documented in accordance with workplace procedures
       
Element: Appropriate person/s is notified that system faults have been rectified 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 one occasion and include:

applying logical diagnostic methods

using fault scenarios to test the cause of system faults

identifying faults and competency needed to rectify them

rectifying faults in system controls

verifying that the system operates correctly

documenting fault rectification

dealing with unplanned events

applying relevant legislation, industry standards, codes of practice and regulations

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

applying safe working practices

hazard identification and reporting

implementing risk control measures

determining need to test or measure live work

diagnosing faults in complex refrigeration or heating, ventilation and air conditioning (HVAC) control systems

isolating circuits/machines/plant

using relevant tools, equipment and testing devices.

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:

complex HVAC/refrigeration control systems, fault finding, safe working practices and relevant standards, codes and regulations, including:

control fundamentals, including:

control terminology

refrigeration system characteristics

HVAC system characteristics

control system characteristics

control system components

control system diagrams and symbols

product knowledge

types of control equipment, including:

electrical:

classification of circuits

two position control

floating control

sensors

controllers

flow control devices

control systems diagrams

electronic:

operating principles

sensors

controllers

control system diagrams

digital control systems, including:

computer-based control fundamentals:

definitions

principles

controller configuration:

equipment

zone level controllers

system level controllers

controller software:

operating software

application software

controller programming:

system diagrams

control diagrams

configuration

programming

initialisation

EMS and BMS

supervisory control and data acquisition (SCADA) system

lan and Bacnet

control systems applications, including:

refrigeration

air conditioning:

air handling system controls

ventilation

heating

building airflow system control

airflow control

singles and multi-zones

chiller/boiler and distribution system control (chilled water, boiler and distribution systems)

diagnostic methods, measurements and estimations

faults within scope of work

relevant manufacturer specifications

relevant WHS/OHS legislated requirements, including:

risk control measures

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.

Diagnosing and rectifying faults in complex HVAC and refrigeration control systems must include at least the following:

four faults in complex refrigeration or HVAC control systems

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 requirements and workplace procedures are identified, obtained and applied 
 
 
 
 
 
WHS/OHS risk control measures and workplace procedures for carrying out the work are followed 
 
 
 
 
 
 
 
 
 
 
WHS/OHS work completion risk control measures and workplace procedures are followed 
 
 
 

Forms

Assessment Cover Sheet

UEERA0033 - Diagnose faults in complex HVAC/refrigeration control 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:

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Assessment Record Sheet

UEERA0033 - Diagnose faults in complex HVAC/refrigeration control 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: