1. Welcome to: Air Conditioning Maintenance & Repair Course
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2. Agenda
Your Roles and Responsibilities in Air Conditioning Maintenance & Repair.
Air Conditioning Safety.
Tools & Equipment for Air Conditioning Repairs.
Refrigerants & Their Special Properties.
The Air Conditioning System.
Simple Fixes.
Refrigerant System Repairs.
Electrical System Repairs.
Air Distribution System Repairs.
Key Takeaways, Action Plan, and Wrap-Up. 2

3. Your Roles and Responsibilities in Air Conditioning3

4. Air Conditioning Safety Rules:
Turn Power Off
Wear Personal Protective Equipment (PPE)
Follow Lock- Out/Tag-Out Procedures 4

5. Air Conditioning Safety Rules:
4. Handle Refrigerants
Correctly.
5. Use Material Safety
Data Sheets
(MSDS Sheets).
6. Keep Tools &
Equipment in Good
Working Order. 5

6. Key Tools for Air Conditioning Repairs
Specialty Air Conditioning Repair Tools
Basic Hand Tools 6

7. Refrigerants and their Special Properties7

8. The Air Conditioning System8

9. Key Parts of an Air Conditioning System9

10. Cleaning the Condenser10

11. Replacing a Filter 11

12. Cleaning the Evaporator Pan and Drain Line12

13. Tightening Loose Fan Blades13

14. The Super Heat Method 14

15. The Sub-cooling Method15

16. The Sub-cooling Method16

17. Recovering Refrigerant17

18. Evacuating and Dehydrating the System18

19. Group Discussion on the Refrigeration System19

20. Electrical System Repairs
Power Sources
Input Power
Distribution
Circuits
Control Circuits
Load Circuits 20

21. Measure the Input Voltage21

22. Test Fuses and Circuit Breakers22

23. Check the Thermostat Operation23

24. Check the Compressor Motor Start Relay24

25. Check the Start and Run Capacitors25

26. Test the Compressor for Open or Shorted Windings26

27. Test the Compressor Motor for Grounded Windings27

28. Identify Unmarked Compressor Terminals28

29. Check the Fan Motor Run Capacitor29

30. Test Fan Motor for Open, Shorted, or Grounded Windings30

31. Two Types of Blowers 31

32. Instructor’s Resource Guide
Two Types of Blowers
Add Pictures from
Instructor’s Resource Guide
Page #58 32

33. Test a Blower Motor 33

34. Replace a Blower Motor 34

35. Unit Replacement 35

36. Air Conditioners with SEER 13 Ratings
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