SAQA

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SOUTH AFRICAN QUALIFICATIONS AUTHORITY

REGISTERED UNIT STANDARD THAT HAS PASSED THE END DATE:

Interpret basic (simplex) electrical diagrams and connect single-phase equipment and components used in air-conditioning, refrigeration and ventilation systems

SAQA US ID	UNIT STANDARD TITLE
9391	Interpret basic (simplex) electrical diagrams and connect single-phase equipment and components used in air-conditioning, refrigeration and ventilation systems
ORIGINATOR
SGB Air-conditioning Refrigeration and Ventilation
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-
FIELD			SUBFIELD
Field 06 - Manufacturing, Engineering and Technology			Engineering and Related Design
ABET BAND	UNIT STANDARD TYPE	PRE-2009 NQF LEVEL	NQF LEVEL	CREDITS
Undefined	Regular	Level 3	NQF Level 03	6
REGISTRATION STATUS		REGISTRATION START DATE	REGISTRATION END DATE	SAQA DECISION NUMBER
Passed the End Date - Status was "Registered"		2001-06-13	2004-06-13	SAQA 0836/01
LAST DATE FOR ENROLMENT		LAST DATE FOR ACHIEVEMENT
2005-06-13		2008-06-13

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

Connect typical single-phase motors, equipment, components and accessories used in air-conditioning, refrigeration and ventilation systems with the aid of electrical drawings.

LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING

It is assumed that people starting to learn towards this unit standard are already able to communicate effectively with others. Use of tools and measuring instruments, identification of mechanical and electrical equipment and components.

UNIT STANDARD RANGE

Motors, equipment components and accessories:

Motors, with their associated control gear are those found driving compressors, fans, pumps etc. and are of the shaded pole, permanent-split capacitor, split phase, capacitor start capacitor run, single and multi speed type. Solid state, voltage operated and current operated start relays. Simplex electrical diagrams with combined power and control circuits, not necessarily complying with I.E.C. requirements, and suitable for the domestic or light commercial air-conditioning and refrigeration equipment at hand are to be available.

Relevant details about components:

Operating voltage, microfarad capacity, normal current, whether normally connected to other components in series or in parallel, whether contacts on relays are normally open or normally closed, whether motors are single or multi-speed, are single phase or 3-phase, whether capacitors are of the starting or running variety.

Specific Outcomes and Assessment Criteria:

SPECIFIC OUTCOME 1

Identify the electrical items/components in the machine, as represented by the symbols and lines

OUTCOME NOTES

Identify the electrical items/components in the machine, as represented by the symbols and lines on the diagram.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. All symbols or lines on the diagram are correctly named and the item/component represented thereby is pointed out in the machine.

SPECIFIC OUTCOME 2

Using the diagram, connect the equipment, the components and the power source to the terminals

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. Connection diagrams are correctly matched to the unit at hand.

ASSESSMENT CRITERION 2

2. All terminals are correctly identified.

ASSESSMENT CRITERION 3

3. All connections are made correctly.

SPECIFIC OUTCOME 3

Provide relevant details about any of the components

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. The details are provided for each component/item without errors, and in accordance with its manufacturer's specification.

SPECIFIC OUTCOME 4

Connect equipment and components according to electrical diagram

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. Wires supplying power are connected to the correct terminals and equipment without trial and error.

ASSESSMENT CRITERION 2

2. There are no stray strands or loose terminations.

SPECIFIC OUTCOME 5

Describe the sequence of operation of the machine as shown on the diagram

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. The operating sequence is correctly described, starting at any point on the diagram.

UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS

Any person wishing to be assessed against this unit standard may apply to an assessment agency, assessor or provider institution accredited by the relevant ETQA, who may appoint a moderator to be present at the assessment.
The assessor must have knowledge and experience of air-conditioning or refrigeration.

UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE

Importance of correct identification and application of components and terminals and application of correct voltage to avoid components malfunctioning or being destroyed.
Realisation that symbols used on drawings represent actual components but may not resemble them physically.
Knowledge how components in the machine react to power being applied or removed.

Critical Cross-field Outcomes (CCFO):

UNIT STANDARD CCFO IDENTIFYING

Identify and solve problems:

Selection of tools and instruments to carry out the tasks

Determine positions for measurements

Interpret electrical diagrams

UNIT STANDARD CCFO ORGANISING

Organise and manage myself and my activities:

Prepare, plan and select resources

UNIT STANDARD CCFO COLLECTING

Collect, analyse, organise and critically evaluate information:

Reading and interpreting manufacturers` instructions

UNIT STANDARD CCFO SCIENCE

Use science and technology effectively and critically:

Identification of equipment and components

UNIT STANDARD NOTES

Supplementary information:

All work to be done and answers to be given to questions in a reasonable time.
Diagrams on commonly used air-conditioning, refrigeration and ventilation equipment to be made available.

QUALIFICATIONS UTILISING THIS UNIT STANDARD:

	ID	QUALIFICATION TITLE	PRE-2009 NQF LEVEL	NQF LEVEL	STATUS	END DATE	PRIMARY OR DELEGATED QA FUNCTIONARY
Core	20720	National Certificate: Air-Conditioning, Refrigeration and Ventilation	Level 3	NQF Level 03	Passed the End Date - Status was "Registered"	2004-06-13	Was MERSETA until Last Date for Achievement

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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