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Air Conditioning Units Maintenance And Repair

Refrigeration And Air Conditioning · Level 6  ·  7 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, ensuring they operate safely, efficiently, and in line with environmental standards. By mastering the use of technical manuals, tools, and workplace procedures, you’ll be equipped to diagnose faults, carry out repairs, handle refrigerants responsibly, and perform retrofitting or conversions. Your skills will make a real difference in keeping environments comfortable and systems running smoothly, all while prioritizing safety and sustainability.

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Careers after Air Conditioning Units Maintenance And Repair

Mastering Air Conditioning Units Maintenance and Repair opens up a world of practical opportunities across Kenya’s vibrant industries. With the country’s growing urban centers, expanding hospitality sector, and increasing focus on modern infrastructure, skilled technicians are in high demand to ensure comfort and efficiency in homes, offices, and public spaces.

  • In the hospitality industry—hotels, lodges, and resorts in Nairobi, Mombasa, and Kisumu—your skills keep guests comfortable, ensuring air conditioning systems run smoothly, which directly impacts customer satisfaction and business success.
  • The matatu industry and public transport operators rely on well-maintained air conditioning systems to enhance passenger comfort on long routes, creating steady employment or business opportunities for skilled technicians.
  • In the construction sector and county government projects, especially in urban counties like Nairobi and Kiambu, you’ll be involved in installing and maintaining air conditioning units in new buildings, offices, and public facilities.
  • The jua kali sector offers entrepreneurial avenues where you can start your own workshop servicing residential and commercial air conditioners, providing affordable and reliable repairs in your community.
  • Large organizations such as KenGen and KTDA require maintenance of climate control systems in their offices and operational centers, offering formal employment opportunities with competitive pay.
  • By mastering safe refrigerant recovery and handling, you contribute to environmental protection, aligning with Kenya’s commitment to sustainable development and occupational safety laws.

By becoming proficient in air conditioning maintenance and repair, you’re not only securing a valuable skill but also positioning yourself for a rewarding career—whether employed by top companies or running your own successful business—helping Kenya’s economy grow while improving everyday comfort for countless people. Your expertise will keep homes cool, workplaces efficient, and the environment safe. Step into this future with confidence!

Chapters

1
Identify and repair faults in refrigeration units
21 topics
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2
Carry out refrigerant recovery
10 topics
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3
Service refrigeration units
21 topics
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4
Pressure testing refrigeration units
4 topics
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5
Evacuate refrigeration units
5 topics
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6
Charge refrigeration units
9 topics
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7
Test-run the maintained Refrigeration units
7 topics
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What Air Conditioning Units Maintenance And Repair covers: 57 main topics in 7 chapters

1. Identify and repair faults in refrigeration units

  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. Carry out 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. Service refrigeration 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 refrigeration units

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

5. Evacuate refrigeration 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 refrigeration 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 the maintained Refrigeration units

  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 Learning Materials

Practise this unit

The practical 80 The assessment itself: tools, materials and the marks Step-by-step guide 80 PPE, each step, what good looks like, common mistakes

Revise this unit

Exam-style questions 98 Written to CDACC standard, with answers Test yourself 280 Multiple-choice, one at a time Practise questions 184 Quick recall — check you know the facts
3 more for this unit
Oral exam preparation 65 What the assessor asks, and how to answer out loud Worked calculations 42 Step-by-step maths with the common mistakes Quick cards 1,382 Myth busters, skill tips and scenarios

Beyond the syllabus

Decision simulator 7 On site, what would you do? Workplace scenarios 142 Real site situations — what would you do? Turn this into income 84 Where this skill earns — what to charge, how to find clients

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