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Air Conditioning Units Maintenance And Repair

Refrigeration And Air Conditioning · Level 5  ·  8 Chapters

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What Air Conditioning Units Maintenance And Repair covers

In this unit, you will be able to confidently maintain and repair air conditioning units, from diagnosing faults using technical manuals to safely handling refrigerants and performing essential repairs or retrofits. You’ll master the use of specialized tools, follow strict safety and environmental standards, and ensure every job is completed efficiently and responsibly. By the end, you’ll be ready to tackle real-world air conditioning challenges with skill, safety, and professionalism.

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Careers after Air Conditioning Units Maintenance And Repair

Mastering Air Conditioning Units Maintenance and Repair opens doors to a thriving and essential service sector in Kenya’s growing economy. Whether in urban centers like Nairobi and Mombasa or in emerging towns, skilled technicians are in high demand to keep homes, offices, vehicles, and industrial facilities comfortable and operational. This skill not only offers stable employment but also empowers you to start your own business, serving diverse clients from households to large corporations.

  • Work in the Jua Kali sector, where many entrepreneurs run small workshops repairing and servicing air conditioning units for residential and commercial clients.
  • Find employment with KenGen, Kenya Power, or large manufacturing firms that require skilled technicians to maintain climate control systems critical for equipment and worker comfort.
  • Serve the hospitality industry, including hotels and lodges across Kenya, which rely on efficient air conditioning for guest satisfaction.
  • Join the matatu industry, providing maintenance and repair services for air conditioning units in public service vehicles, enhancing passenger comfort and safety.
  • Work on construction sites installing and maintaining air conditioning units in new buildings, collaborating with contractors and engineers.
  • Start an entrepreneurial venture offering mobile AC repair services, tapping into growing demand in both urban and rural areas.
  • By mastering safe working practices and environmental legislation, you ensure compliance with Kenya’s Occupational Safety and Health (OSH) Act and environmental standards, making you a trusted professional.

Your expertise in this vital trade will keep Kenya’s homes, businesses, and industries cool and efficient, making you a valuable asset in the workforce and a confident entrepreneur shaping your own future. Keep learning and honing your skills—your career in air conditioning maintenance and repair is a pathway to success and independence.

Chapters

1
Prepare for troubleshooting and repair
21 topics
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2
Perform refrigerant recovery
10 topics
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3
Identify and repair faults in automobile air conditioning units
21 topics
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4
Pressure testing Automobile Air Conditioning units
4 topics
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5
Evacuation of Automobile Air Conditioning units
5 topics
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6
Charge Automobile air conditioning units
9 topics
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7
Test-run maintained unit
7 topics
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8
Prepare service and maintenance reports
0 topics
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What Air Conditioning Units Maintenance And Repair covers: 57 main topics in 7 chapters

1. Prepare for troubleshooting and repair

  1. 1.1 Interpretation of diagrams, charts and manuals
  2. 1.2 Identification of faults
  3. 1.3 Electrical parts, components, functions and operations
  4. 1.4 Procedures for testing electrical components
  5. 1.5 Troubleshooting electrical faults
  6. 1.6 Procedures for repairing/replacing electrical components
  7. 1.7 Mechanical parts, components, functions and operation
  8. 1.8 Troubleshooting mechanical faults
  9. 1.9 Repair of Air Conditioning units
  10. 1.10 Commission repaired system

2. Perform refrigerant recovery

  1. 2.1 Type of refrigerant
  2. 2.2 Terms and concepts of refrigerant recovery
  3. 2.3 Tools, equipment and materials
  4. 2.4 Decommissioning procedures for hydrocarbon RAC systems
  5. 2.5 Safe procedures for handling potentially hazardous system materials, including hydrocarbon refrigerants
  6. 2.6 Calculate the safe fill weight for the recovery cylinder (density difference between HFCs and HCs)
  7. 2.7 Preparation for recovery
  8. 2.8 Pressure testing of the cylinder
  9. 2.9 Connecting manifold gauge set
  10. 2.10 Performing refrigerant recovery

3. Identify and repair faults in automobile air conditioning units

  1. 3.1 Fundamentals of Air Conditioning
  2. 3.2 Identification of symbols
  3. 3.3 Interpretation of drawings
  4. 3.4 Tools, equipment and materials
  5. 3.5 Air conditioning Units components and accessories
  6. 3.6 Operating parameters of air conditioning Units
  7. 3.7 Types of refrigerants
  8. 3.8 Types of lubricants
  9. 3.9 Safe handling of refrigerants (including hydrocarbons)
  10. 3.10 Safety in handling nitrogen gas
  11. 3.11 Diagnosing air conditioning Units' faults
  12. 3.12 Repair of air conditioning Units
  13. 3.13 Ozone depletion substances (ODS)

4. Pressure testing Automobile Air Conditioning units

  1. 4.1 Pressure strength test
  2. 4.2 Pressure tightness test
  3. 4.3 Applicable ISO standards

5. Evacuation of Automobile Air Conditioning units

  1. 5.1 Identifying A/C unit for evacuation
  2. 5.2 Health, safety and environmental requirements
  3. 5.3 Tools, equipment and instruments
  4. 5.4 Evacuation Procedure
  5. 5.5 Housekeeping practices

6. Charge Automobile air conditioning units

  1. 6.1 Identifying Air Conditioning unit to be charged
  2. 6.2 Identifying relevant refrigerant
  3. 6.3 Health and safety requirements and standards
  4. 6.4 KS ISO 5149-4:2014
  5. 6.5 ISO 22712
  6. 6.7 Air Conditioning Charging Procedure
  7. 6.8 Hydrocarbon charging (R290, R600a)
  8. 6.9 Housekeeping practices
  9. 6.10 Preparing refrigeration charging report

7. Test-run maintained unit

  1. 7.1 Temperature testing
  2. 7.2 Current and voltage measurement
  3. 7.3 Sound and vibration checking
  4. 7.4 Operation of Air Conditioning unit within acceptable parameters
  5. 7.5 Training the user on use of the unit
  6. 7.6 Handing over procedures
  7. 7.7 Report writing The delivery may also be supplemented and enhanced by the following, if the opportunity allows; S/No. Quantity Recommended Ratio (Item: Trainee) A

Practise this unit

The practical 90 The assessment itself: tools, materials and the marks Step-by-step guide 90 PPE, each step, what good looks like, common mistakes

Revise this unit

Exam-style questions 112 Written to CDACC standard, with answers Test yourself 284 Multiple-choice, one at a time Practise questions 184 Quick recall — check you know the facts
3 more for this unit
Oral exam preparation 64 What the assessor asks, and how to answer out loud Worked calculations 36 Step-by-step maths with the common mistakes Quick cards 1,398 Myth busters, skill tips and scenarios

Beyond the syllabus

Decision simulator 7 On site, what would you do? Workplace scenarios 100 Real site situations — what would you do? Turn this into income 48 Where this skill earns — what to charge, how to find clients

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