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Evidence Guide: MEM23154A - Analyse and service HVACR systems

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

MEM23154A - Analyse and service HVACR systems

What evidence can you provide to prove your understanding of each of the following citeria?

Prepare for analysis and service task

  1. Obtain and implement work health and safety (WHS) and environmental requirements for a given work area
  2. Identify essential elements of a control system
  3. Determine the function of electrical, pneumatic and electronic control and flow devices using control circuit diagrams and/or specifications or other specialised resources
  4. Obtain sequence of control, specify settings and adjust control devices from system’s specifications
  5. Consult appropriate personnel to ensure that work is coordinated effectively with others
  6. Obtain equipment and resources needed for the task in accordance with enterprise procedures and check for correct operation and safety
Obtain and implement work health and safety (WHS) and environmental requirements for a given work area

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify essential elements of a control system

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine the function of electrical, pneumatic and electronic control and flow devices using control circuit diagrams and/or specifications or other specialised resources

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Obtain sequence of control, specify settings and adjust control devices from system’s specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Consult appropriate personnel to ensure that work is coordinated effectively with others

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Obtain equipment and resources needed for the task in accordance with enterprise procedures and check for correct operation and safety

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

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.

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Assessors must be satisfied that the candidate can competently and consistently:

implement WHS workplace procedures and practices, including the use of risk control measures

demonstrate essential knowledge and skills to analyse and service HVAC/R control systems

demonstrate the competency within a timeframe typically expected of the discipline, work function and industrial environment

demonstrate analysing and servicing HVAC/R control systems consistently in different applications.

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, 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.

Method of assessment

Assessment must satisfy the endorsed Assessment Guidelines of the MEM05 Metal and Engineering Training Package.

Assessment methods must confirm consistency and accuracy of performance (over time and in a range of workplace relevant contexts) together with application of underpinning knowledge.

Assessment methods must be by direct observation of tasks and include questioning on underpinning knowledge to ensure correct interpretation and application.

Assessment may be applied under project-related conditions (real or simulated) and require evidence of process.

Assessment must confirm a reasonable inference that competency is not only able to be satisfied under the particular circumstance, but is able to be transferred to other circumstances.

Assessment may be in conjunction with assessment of other units of competency where required.

Guidance information for assessment

Assessment processes and techniques must be culturally appropriate and appropriate to the language and literacy capacity of the candidate and the work being performed.

Required Skills and Knowledge

Required skills

Required skills include:

interpreting standards, codes and regulations relevant to HVAC/R control systems

producing control diagrams

evaluating automatic control systems

determining control requirements, including:

full and partial load performance requirements

automated and manual control sequences

integration with energy management system requirements

commissioning control systems

using relevant software tools effectively

interpreting drawings and specifications

communicating effectively with others

working in teams and with others

communicating technical and procedural requirements to others

dealing effectively with unexpected situations

Required knowledge

Required knowledge includes:

thermodynamic principles relevant to HVAC/R controls

control fundamentals

types of control equipment, including microprocessors, sensors, and so on

direct data control (DDC) systems

supervisory control systems

Range Statement

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. 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.

WHS requirements

WHS requirements include:

relevant legislation

protective equipment

material safety management systems

hazardous substances and dangerous goods code

local safe operation procedures

awards provisions

Environmental requirements

Environmental requirements include:

relevant legislation, regulations and codes

correct handling and disposal of liquid and solid waste

elimination or minimisation of gas, fume, vapour and smoke emissions, including fugitive emissions

dust elimination, minimisation and control

minimisation of energy and water use

elimination or control of excessive noise

use and recycling of refrigerants

Appropriate personnel

Appropriate personnel may include:

supervisor

leading hand

foreman

manager

engineer

technician

trainer

mentor

team member

customer

client

Resources

Resources may include:

reference manuals

scientific calculator

appropriate manuals

stationery

suitable computer software

Enterprise procedures

Enterprise procedures may include:

the use of tools and equipment

instructions, including job sheets, plans, drawings and designs

reporting and communication

operational procedures

industry standards

Equipment

Equipment may include:

computer workstation and software, either stand alone or networked

appropriate tools

appropriate spare parts

cables and connectors

test equipment

consumables

appropriate software licences

manufacturer specifications and manuals

diagnostics software

personal computer