SAQA

All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.

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

ASSESSMEN