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

UEERA0080 Mapping and Delivery Guide
Select basic commercial refrigeration system equipment, components and accessories

Version 1.0
Issue Date: May 2024


Qualification -
Unit of Competency UEERA0080 - Select basic commercial refrigeration system equipment, components and accessories
Description
Employability Skills
Learning Outcomes and Application This unit involves the skills and knowledge required to select commercial refrigeration system equipment, components and accessories.It includes selecting commercial refrigeration system equipment and components, pipe work and controls. It also includes selecting refrigerant, condensing unit, evaporator, refrigerant controls, accessories, refrigerant and condensate pipe work, and system controls based on specifications, industry standards and manufacturer catalogues to determine calculated and deemed-to-comply solutions and documenting all selection information.The skills and knowledge described in this unit may, in some jurisdictions, require a licence or permit to practice in the workplace subject to regulations for undertaking refrigeration and air conditioning work. Practice in the workplace and during training is also subject to work health and safety (WHS)/occupational health and safety (OHS) regulations.No other licensing, legislative or certification requirements apply to this unit at the time of publication.
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, 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: Identify commercial refrigeration system equipment and components
  • Extent and nature of refrigeration installation is determined from job specifications
       
Element: Refrigeration system safety and regulatory compliance requirements are identified and applied
       
Element: Develop refrigeration pipe work arrangements
  • Location of refrigeration equipment is determined from regulatory requirements, job specifications and site drawings
       
Element: Refrigeration piping is arranged to ensure safe and functional operation of the system
       
Element: Pipe work is arranged to comply with technical industry standards, job specifications and requirements
       
Element: Select commercial refrigeration system equipment and components
  • Pipe and tubing are selected for suitability for the commercial environments it is to be installed
       
Element: Pipe and tubing are sized to meet refrigeration parameters and capacity requirements for the refrigerant to be used
       
Element: Pipe and tubing quantities are determined from equipment location diagrams and job specifications
       
Element: Refrigeration system equipment and components are selected to meet load requirements based on calculated or deemed-to-comply solutions
       
Element: Refrigerant liquid expansion valves are selected to meet functional, specified and regulatory requirements
       
Element: Automatic control devices are selected to meet functional, specified regulatory requirements, current voltage and ingress protection (IP) ratings
       
Element: Evidence is obtained that the selected refrigeration equipment and components comply with job requirements and industry standards
       
Element: Document selection of system equipment and components
  • Reasons for selections made including calculations are documented in accordance with workplace procedures
       
Element: Refrigeration installation arrangements and specifications for selected items are documented in accordance with workplace procedures and forwarded to appropriate person/s
       


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:

arranging pipe work to comply with regulatory and functional requirements

selecting appropriate type, size and quantity of pipe and tubing

selecting refrigeration equipment and components that meets load requirements

selecting automatic control devices that meet functional and regulatory requirements

documenting pipe work arrangement, specification for items selected and reasons for the selections made

dealing with unplanned events

applying relevant work health and safety (WHS)/occupational health and safety (OHS) requirements and workplace procedures and practices, including using risk control measures

applying sustainable energy principles and practices.

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:

basic commercial refrigeration system equipment, components, accessories selection, piping selection, safe working practices and relevant standards, codes and regulations, including:

calculation of capacity in heat exchangers:

Q = UA (LMTD)

Q = mc∆t

Q = m ∆h

evaporators:

commercial types and applications

coil bypass factor

effects of evaporator TD on space humidity

effects of air circulation on product conditions

selection criteria and selection tables

condensers:

commercial types and applications

effects of ambient conditions

condenser control

heat rejection factor

condenser TD

selection criteria and selection tables

compressors:

types and applications

capacity

displacement

volume flow rate

theoretical capacity

total volumetric efficiency

effect of operating conditions, including suction pressure drop and superheating

actual capacity

power

theoretical requirement

effects of operating conditions

actual requirements

post defrost loads

pull down torque requirements, high, medium and low back pressure compressors

selection tables, motor selection

refrigerant flow controls:

types, operation and applications

effects from sub-cooling

distributor types, operation and applications

selection tables

system load balance point:

graphical representation

line sizing and design:

quick selection tables

velocity tables

pressure drop in lines and fittings

oil migration stabilisation

refrigerant velocity

effect of varying system capacity

oil traps

risers

liquid migration

automatic controls:

fin spacing, suction temp to evaporator suction

hot-gas bypass valves

electronic control of valves programmable logic controller (PLC) control

refrigerant regulating valves

solenoid valves

condenser pressure regulating valves

evaporator pressure regulating valves

crankcase pressure regulating valves

cycling controls

pressure-stats

thermostats

defrost controls

monitoring and alarm controls

refrigeration automation systems

control strategies

control modes

relevant industry standards, including industry practices and technologies

relevant job safety assessments or risk mitigation processes

relevant manufacturer specifications

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.

Selecting commercial refrigeration system equipment and components, pipe work and controls must include at least the following:

two different refrigeration systems, including:

refrigerant

condensing unit

evaporator

refrigerant controls

accessories

refrigerant and condensate pipe work

system controls

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
Extent and nature of refrigeration installation is determined from job specifications 
 
Location of refrigeration equipment is determined from regulatory requirements, job specifications and site drawings 
 
 
Pipe and tubing are selected for suitability for the commercial environments it is to be installed 
 
 
 
 
 
 
Reasons for selections made including calculations are documented in accordance with workplace procedures 
 

Forms

Assessment Cover Sheet

UEERA0080 - Select basic commercial refrigeration system equipment, components and accessories
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

UEERA0080 - Select basic commercial refrigeration system equipment, components and accessories

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: