Assessor Resource

MEM18085
Install, service and repair domestic air conditioning and refrigeration appliances

Assessment tool

Version 1.0
Issue Date: May 2024


This unit of competency defines the skills and knowledge required to install, service and repair domestic air conditioning and refrigeration appliances to relevant standards, codes and local regulations and is limited to domestic air conditioning and refrigeration systems only.

It includes the application of safe working practices, following standard procedures to perform functional checks, test system performance and carry out straightforward maintenance.

This unit refers to plug-in appliances only.

Where interpretation of technical drawings is required unit MEM09002 Interpret technical drawing should also be selected.

A Refrigerant Handling Licence must be held by any person who carries out work in relation to refrigeration and air conditioning equipment.

Band: A

Unit Weight: 6

You may want to include more information here about the target group and the purpose of the assessments (eg formative, summative, recognition)

Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assingnment, 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.

This field allows for different work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included.

Routine maintenance includes the following:

electrical testing of the appliance

polarity testing

cleaning condensers

clearing drains

checking temperatures

pressures

component operation

air flow and system capacity

cleaning filters

Standard electrical tests include:

earth continuity, insulation resistance, and circuit resistance to meet electrical equipment regulations and codes (AS/NZS 3000:2007 Electrical Installations (known as the Australian/New Zealand Wiring Rules)

testing of supply voltage and the appliance or individual component current draw

Tools, equipment and testing devices include one (1) or more of the following:

refrigeration gauge manifold

Schraeder access valves; quick connect couplings, thermometer/thermocouple temperature measuring devices

analog and digital vacuum measuring gauges

digital scales

refrigerant recovery unit

vacuum pump

electronic leak detectors

refrigerant containers/cylinders

Industry best practice includes:

pipe fabrication techniques and industry best practice for pipe brazing

Standard refrigeration return to service procedures include one (1) or more of the following:

leak detection

evacuation

refrigerant charging of domestic air conditioning and refrigeration plug-in appliances

Commonwealth, state and territory legislation, regulations, standards, codes of practice and industry guidelines include one (1) or more of the following:

Ozone Protection and Synthetic Greenhouse Gas Legislation Amendment Bill 2003

air conditioning residential best practice guidelines (AIRAH)

AIRAH flammable refrigerant fact sheets and guide

state/territory and local building regulations

codes of practice for domestic refrigeration and air conditioning. (HB40)

System performance includes one (1) or more of the following:

pressure

temperature

sub-cooling

superheating

evaporator coil to air temperature difference

Domestic refrigeration and air conditioning appliances include:

self-contained plug in appliances primarily designed for domestic and residential situations, including one or more of the following:

refrigerators - single door, two door and two door side by side

freezers - chest and vertical door using, for example, refrigeration systems with cyclic defrost, frost-free with electric and hot-gas defrost, and manual defrost

air conditioners (window and wall mounted self-contained room air conditioners)

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
Follow standard operating procedures (SOPs) 
 
 
 
Identify appliance location and site in accordance with customer requirements, regulations, standards, codes of practice and industry guidelines 
 
 
 
Identify refrigerant used in equipment and protect from ignition sources if refrigerant is flammable 
 
 
 
 
Identify safety hazards and record and implement established risk control measures 
 
 
Select equipment and testing devices needed to determine fault 
 
 
Disconnect plug in appliance electrically 
 
 
 
 
Identify standard electrical tests to identify electrical faults before operating 
 
 
 
 

Forms

Assessment Cover Sheet

MEM18085 - Install, service and repair domestic air conditioning and refrigeration 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

MEM18085 - Install, service and repair domestic air conditioning and refrigeration 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: