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SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD THAT HAS PASSED THE END DATE: 

Operate water treatment systems used in air-conditioning and refrigeration installations 
SAQA US ID UNIT STANDARD TITLE
116706  Operate water treatment systems used in air-conditioning and refrigeration installations 
ORIGINATOR
SGB Air-conditioning Refrigeration and Ventilation 
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 3  NQF Level 03  3 
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 replaces: 
US ID Unit Standard Title Pre-2009 NQF Level NQF Level Credits Replacement Status
13378  Operate water treatment systems used in air-conditioning and refrigeration installations  Level 3  NQF Level 03  3   

PURPOSE OF THE UNIT STANDARD 
Operate water treatment systems used in refrigeration and air-conditioning installations without injury to persons or damage to equipment or environment. 

LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
  • Identify water filtration systems and components, accessories and controls
  • Interpretation of drawings and operating instructions 
    		•

    UNIT STANDARD RANGE 
  • The commonly applied chemicals for treatment of chilled water, condenser water and hot water systems as used in air-conditioning and refrigeration plants.
  • Hot water, condenser water and chilled water circuits. 
    		•

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Explain the reasons for water treatment. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The factors that reduce heat exchange are listed and explained. 

    ASSESSMENT CRITERION 2 
    The effects of heating the water on the heat exchange are listed and discussed. 

    SPECIFIC OUTCOME 2 
    Explain the effect of non-treatment of the water. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The effects non-treatment has on plant operation and life are listed and discussed. 

    SPECIFIC OUTCOME 3 
    Obtain water samples from each of the circuits. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The need for taking precautions against samples becoming contaminated by external contaminants is explained. 

    ASSESSMENT CRITERION 2 
    Samples being taken for analysis are not contaminated by or during the sampling process. 

    ASSESSMENT CRITERION 3 
    No water other than the amount required for the sample is lost from the circuit. 

    SPECIFIC OUTCOME 4 
    Explain and demonstrate the safety precautions to take and the personal protective equipment (PPE) to wear when handling biocides and other chemicals used in treating the water. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The safe handling procedures of biocides and each of the other chemicals must conform to the requirements of the manufacturer of each product are listed and explained. 

    ASSESSMENT CRITERION 2 
    Chemicals are handled using personal protective equipment and in accordance with the requirements of each manufacturer. 

    SPECIFIC OUTCOME 5 
    Dose each circuit with the correct chemical(s) and in the amount prescribed in the analyst's report. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Explain the need for accurate dosing. 

    ASSESSMENT CRITERION 2 
    Chemicals are correctly identified. 

    ASSESSMENT CRITERION 3 
    The prescribed amount of chemical is transferred from its container into a dosing cylinder without spillage. 

    ASSESSMENT CRITERION 4 
    The chemical is successfully put into the correct water circuit 


    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 
  • The need for accurate dosing. The safety precautions to take when handling the chemicals
  • The PPE to wear. The necessity for preventing external contamination of the samples. 
    		•

    UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identify and solve problems
  • Selection of water sampling and chemical charge points. 
    		•

    UNIT STANDARD CCFO ORGANISING 
    Organise and manage myself and my activities
  • Prepare and plan to operate a water treatment plant 
    		•

    UNIT STANDARD CCFO COLLECTING 
    Collect, analyse, organise and critically evaluate information
  • Interpretation of manufacturers' instructions 
    		•

    UNIT STANDARD CCFO SCIENCE 
    Use science and technology effectively and critically
  • Apply correct safety procedures 
    		•

    UNIT STANDARD CCFO DEMONSTRATING 
    Demonstrate an understanding of the world as a set of related systems
  • Understand the effects of the environment on cleanliness of water 
    		•

    UNIT STANDARD ASSESSOR CRITERIA 
    N/A 

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

    UNIT STANDARD NOTES 
    This unit standard replaces unit standard 13378, which is "Operate water treatment systems used in air-conditioning and refrigeration installations, Level 3, 3 credits.

    Supplementary information:
    Questions must be answered and work done within a reasonable time. 

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Elective  65489   National Certificate: Air-Conditioning, Refrigeration and Ventilation  Level 3  NQF Level 03  Passed the End Date -
    Status was "Reregistered"     		 2023-06-30  MERSETA 
    Elective  48963   National Certificate: Air-Conditioning, Refrigeration and Ventilation  Level 3  NQF Level 03  Passed the End Date -
    Status was "Reregistered"     		 2009-03-12  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.
     
    NONE 


    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.