SAQA

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SOUTH AFRICAN QUALIFICATIONS AUTHORITY

REGISTERED UNIT STANDARD THAT HAS PASSED THE END DATE:

Diagnose, service and maintain automobile air conditioning systems

SAQA US ID	UNIT STANDARD TITLE
12226	Diagnose, service and maintain automobile air conditioning systems
ORIGINATOR
SGB Manufacturing and Assembly Processes
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-
FIELD			SUBFIELD
Field 06 - Manufacturing, Engineering and Technology			Manufacturing and Assembly
ABET BAND	UNIT STANDARD TYPE	PRE-2009 NQF LEVEL	NQF LEVEL	CREDITS
Undefined	Regular	Level 4	NQF Level 04	12
REGISTRATION STATUS		REGISTRATION START DATE	REGISTRATION END DATE	SAQA DECISION NUMBER
Passed the End Date - Status was "Reregistered"		2018-07-01	2023-06-30	SAQA 06120/18
LAST DATE FOR ENROLMENT		LAST DATE FOR ACHIEVEMENT
2024-06-30		2027-06-30

In all of the tables in this document, both the pre-2009 NQF Level and the NQF Level is shown. In the text (purpose statements, qualification rules, etc), any references to NQF Levels are to the pre-2009 levels unless specifically stated otherwise.

This unit standard does not replace any other unit standard and is not replaced by any other unit standard.

PURPOSE OF THE UNIT STANDARD

The skills, values and knowledge reflected in this unit standard are required for the people in the field of autotronics.

The learning outcomes of this unit standard also contribute to the exit levels outcomes required for the autotronics NQF4 level qualification.

Qualifying learners are able to diagnose, test, maintain and service automobile air-conditioning systems using product specific service manuals, circuit diagrams, work instructions and in accordance with procedures in a safe, aware manner.

LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING

This unit standard is designed as part of a progression.

The credits allocated to this unit standard assume that a learner is competent at the relevant unit standard/s at the lower levels.

UNIT STANDARD RANGE

The scope and level of this unit standard is determined by the ranges as indicated under specific outcomes.

The learner should be able to work autonomously.

Specific Outcomes and Assessment Criteria:

SPECIFIC OUTCOME 1

Discuss and explain the basic operating principles of the refrigeration cycle

OUTCOME NOTES

Discuss and explain the basic operating principles of the refrigeration cycle and the function of air-conditioning components of an automobile air-conditioning system.

OUTCOME RANGE

Components include compressor (axial type, scroll type, vane type) magnetic clutch, condenser, receiver-dryer, expansion valve, evaporator, blower (auxiliary and main), refrigerant, controls, pressure switch (high and low).

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

Results achieved:

1. Operation of an automobile air conditioning is explained
2. Automobile air conditioning components are identified and function explained
3. Air conditioning electric circuit diagrams are correctly interpreted
4. Air conditioning system is maintained to specifications
5. Problems are correctly diagnosed and rectified
6. Relevant documentation is correctly filled in

Indicators:

1. Correct tools are utilised, cared for and stored
2. Safe working practices are adhered to when carrying out activities
7. Air conditioning system is discharged, evacuated, charged and tested in accordance to procedures
3. Air conditioner components are removed and fitted without vehicle damage
4. Air conditioner is recharged and operation tested
5. Procedures are followed

Understanding confirmed:

Respond to "what if" and "why" questions covering:
1. Safety
2. Air conditioning systems
3. Manufacturers specifications and procedures
4. Air conditioning system maintenance
5. Refrigerant (old type versus new type)

SPECIFIC OUTCOME 2

Read and interpret air-conditioning electrical circuit diagrams and component symbols

OUTCOME RANGE

Symbols include blower switch, relays, blower motor, fuses, circuit breakers, ignition switch, indicator lamp, air conditioner switch, magnetic clutch, pressure switches and sensors.

Circuits include radiator fan, evaporator fan and air-conditioner control circuits.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

SPECIFIC OUTCOME 3

Maintain automobile air-conditioning systems

OUTCOME RANGE

Maintenance includes compressor belt drive tension, Hose, fitting, seals and connections, condenser, sight glass.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

SPECIFIC OUTCOME 4

Service an automobile air-conditioning system

OUTCOME RANGE

Servicing includes discharge, evacuate, recharge and test the system.

Specialised equipment includes refrigerant recovery unit (manifold gauge set, compressor, oil separator with a sight glass and a recovery cylinder, gas leak detector, multimeter, test lamp, electronic thermometer).

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

SPECIFIC OUTCOME 5

Remove and fit automobile air conditioner components

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

SPECIFIC OUTCOME 6

Diagnose automobile air conditioning problems

OUTCOME RANGE

Problems include: mechanical (gas) and electrical aspects.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

SPECIFIC OUTCOME 7

Apply relevant safety practices when working with automobile air conditioning systems

OUTCOME RANGE

Safety includes work area, electrical safety, gas usage safety, work area safety and vehicle cleanliness restored.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

SPECIFIC OUTCOME 8

Discuss and report incidents and problems related to automobile air conditioning systems

OUTCOME NOTES

Discuss and report incidents and problems related to automobile air conditioning systems and compile fault finding reports and requisition forms.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS

My assessment will be governed by the policies and guidelines of the MERSETA Education and Training Quality Assurer who has jurisdiction over this field of learning. My assessor will (at the very least) be accredited and have a technical qualification in this learning area.

I can be assessed in the language of my choice although if I have to report incidents or conditions to someone else, I will be assessed on my ability to report in the language commonly used in my working environment.

I will be assessed in the workplace but I can submit documents, projects, test results and assignments that were not produced in the workplace.

I can be assessed against this unit standard to obtain credits or as part of an integrated assessment for a qualification.

UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE

1. Names and functions of:

Automotive air conditioning components

Personal and automotive protective equipment

Leakage tests

Discharging, evacuation and Recharging

Refrigeration cycle

Blower

Evaporator
2. Purpose of:

Refrigerant

Manufacturers specifications and procedures

Air conditioning systems
3. Attributes, descriptions, characteristics and properties:

Refrigerant

Refrigeration cycle
4. Sensory cues:

Use of sight when checking the system
5. Causes and effects, implications of:

Implications of not using personal protection equipment

Implications of not disposing of the refrigerant correctly

Implications of not carrying out leakage tests
6. Procedures and techniques:

Safety procedures

Testing procedures

Discharging, evacuation and recharging procedures
7. Regulations, legislation, agreements, policies, standards:

Regulations regarding working with compressors

Disposal of refrigerants

Applicable safety, health and environmental legislation
8. Theory: rules, principles, laws:

Heat and heat transfer

Condensation

Conduction

Evaporation

Pressure laws
9. Relationships, systems:

Relationship of an automobile air conditioning system to other automobile operating systems

Critical Cross-field Outcomes (CCFO):

UNIT STANDARD CCFO IDENTIFYING

Identify and solve problems:

Recognise situations that require action and correct when necessary

UNIT STANDARD CCFO WORKING

Work effectively with others:

When servicing and maintaining an automobile air conditioning system

UNIT STANDARD CCFO ORGANISING

Organise and manage myself and my activities:

Apply the correct procedures for using, storing and looking after equipment, tools, test equipment, components and chemicals

Plan and prepare job function activities

UNIT STANDARD CCFO COMMUNICATING

Communicate effectively:

Use common names for tools and equipment

Fill in and use fault reports, requisition forms and job cards

UNIT STANDARD CCFO SCIENCE

Use science and technology:

Apply the principles of the refrigeration cycle

Apply the principles of heat transfer

UNIT STANDARD CCFO DEMONSTRATING

Demonstrate an understanding of the world as a set of related systems:

Relate the operation of automobile air conditioning systems to that of other air conditioners

REREGISTRATION HISTORY

As per the SAQA Board decision/s at that time, this unit standard was Reregistered in 2012; 2015.

QUALIFICATIONS UTILISING THIS UNIT STANDARD:

	ID	QUALIFICATION TITLE	PRE-2009 NQF LEVEL	NQF LEVEL	STATUS	END DATE	PRIMARY OR DELEGATED QA FUNCTIONARY
Core	22860	National Certificate: Autotronics	Level 4	Level TBA: Pre-2009 was L4	Passed the End Date - Status was "Reregistered"	2012-06-30	MERSETA

PROVIDERS CURRENTLY ACCREDITED TO OFFER THIS UNIT STANDARD:

This information shows the current accreditations (i.e. those not past their accreditation end dates), and is the most complete record available to SAQA as of today. Some Primary or Delegated Quality Assurance Functionaries have a lag in their recording systems for provider accreditation, in turn leading to a lag in notifying SAQA of all the providers that they have accredited to offer qualifications and unit standards, as well as any extensions to accreditation end dates. The relevant Primary or Delegated Quality Assurance Functionary should be notified if a record appears to be missing from here.

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