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: 

Remove, install and service bearings used on air-conditioning, refrigeration and ventilation equipment 
SAQA US ID UNIT STANDARD TITLE
9394  Remove, install and service bearings used on air-conditioning, refrigeration and ventilation equipment 
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 is replaced by: 
US ID Unit Standard Title Pre-2009 NQF Level NQF Level Credits Replacement Status
116715  Remove, install and service bearings used on air-conditioning, refrigeration and ventilation equipment  Level 3  NQF Level 03  6   

PURPOSE OF THE UNIT STANDARD 
People credited with this unit standard have proven the ability to:
  • Identify and explain the purpose of and select the various types of bearings used in refrigeration, air-conditioning and ventilation equipment.
  • Explain the causes, effects and prevention of bearing failure.
  • Carry out maintenance, fitting and/or removing bearings in accordance with manufacturer`s instructions. 
    		•

    LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
    Ability to use and maintain hand and specialist tools used in the trade of air-conditioning, refrigeration and ventilation and required for removal and replacement of bearings. 

    UNIT STANDARD RANGE 
    Ball bearings, roller bearings, sleeve bearings, flanged and journal bearings, thrust bearings, bushes, sintered bronze, sealed. 

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    State the principle of operation and identify the various types of bearings. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    1. The basic construction and principle on which the operation of various types of bearings are based, is explained. 

    ASSESSMENT CRITERION 2 
    2. The reasons for using bearings are discussed. 

    ASSESSMENT CRITERION 3 
    3. Typical applications of various bearing types are given and explained. 

    ASSESSMENT CRITERION 4 
    4. The various types of bearings are identified. 

    SPECIFIC OUTCOME 2 
    State and explain typical applications of the various types of bearings. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    1. The factors influencing the selection of a specific bearing for a particular application are explained. 

    ASSESSMENT CRITERION 2 
    2. The advantages and limitations of various bearings are discussed. 

    SPECIFIC OUTCOME 3 
    State the purpose of removing, installing and servicing bearings. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    1. Common running defects in bearings and their causes are described and remedial action proposed. 

    ASSESSMENT CRITERION 2 
    2. Failure symptoms in bearings and their causes are listed. 

    ASSESSMENT CRITERION 3 
    3. The importance of ensuring correct clearance and alignment are described. 

    ASSESSMENT CRITERION 4 
    4. Factors to be considered in the lubrication of bearings are discussed. 

    ASSESSMENT CRITERION 5 
    5. The importance of lubrication as well as using the correct lubricant is described. 

    SPECIFIC OUTCOME 4 
    Carry out removal, installation and servicing of bearings. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    1. The procedure of removal and replacement of bearings in line with specified requirements is explained. 

    ASSESSMENT CRITERION 2 
    2. The consequence of sub-standard removal and installation of bearings on bearing life and load carrying capacity is explained. 

    ASSESSMENT CRITERION 3 
    3. The importance of working in a clean environment in accordance with accepted housekeeping principles is explained. 

    ASSESSMENT CRITERION 4 
    4. The work is checked in accordance with written instructions to ensure compliance. 

    ASSESSMENT CRITERION 5 
    5. The work is carried out within agreed time frames. 

    ASSESSMENT CRITERION 6 
    6. Operation after installation is checked in accordance with specified operating instructions. 

    ASSESSMENT CRITERION 7 
    7. Completion of the work is reported in line with agreed company procedures. 


    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 
  • Correct identification and selection of bearings used in air-conditioning, refrigeration and ventilation equipment as well as their correct removal and installation from equipment.
  • Purposes, advantages and limitations of different types of bearings.
  • Ability to detect bearing problems using sensory cues, i.e. on the basis of noise, smell emitted and unacceptable heat generated.
  • Consequences of incorrectly removing, selecting, installing and servicing bearings.
  • Working in accordance with specific manufacturer`s instructions. 
    		•


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identify and solve problems
  • Select correct removal and installation method and bearing type 
    		•

    UNIT STANDARD CCFO WORKING 
    Work effectively with others
  • Other trade hands (Mechanics) during execution of removal and installation 
    		•

    UNIT STANDARD CCFO ORGANISING 
    Organize and manage myself and my activities responsibly and effectively
  • Prepare, plan and select correct tools and procedures for removal and installation of bearings in equipment 
    		•

    UNIT STANDARD CCFO COMMUNICATING 
    Communicate effectively
  • Present oral or written report on completion of job 
    		•

    UNIT STANDARD CCFO SCIENCE 
    Use science and technology effectively and critically
  • Use correct selection of tools, instruments, parts and procedures 
    		•

    UNIT STANDARD CCFO DEMONSTRATING 
    Demonstrate an understanding of the world as a set of related systems
  • Impact of incorrect procedures on equipment operation 
    		•

    UNIT STANDARD CCFO CONTRIBUTING 
    Learner and societal development
  • By learning the importance of bearings in the efficient operation of equipment 
    		•

    UNIT STANDARD NOTES 
    This unit standard has been replaced by unit standard 116715, which is "Remove, install and service bearings used on air-conditioning, refrigeration and ventilation equipment", Level 3, 6 credits.

    Specific requirements are contained in one or more of the following documents:
  • Manufacturer`s instructions and technical information regarding the removal, installation and servicing of bearings.
  • Company procedures and guidelines.
  • Relevant technical drawings, specifications and workshop manuals. 
    		•

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Elective  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.
     
    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.