Welcome to: Air Conditioning Maintenance & Repair Course Visit for more Learning Resources 1

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

Your Roles and Responsibilities in Air Conditioning 3

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

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

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

Refrigerants and their Special Properties 7

The Air Conditioning System 8

Key Parts of an Air Conditioning System 9

Cleaning the Condenser 10

Replacing a Filter 11

Cleaning the Evaporator Pan and Drain Line 12

Tightening Loose Fan Blades 13

The Super Heat Method 14

The Sub-cooling Method 15

The Sub-cooling Method 16

Recovering Refrigerant 17

Evacuating and Dehydrating the System 18

Group Discussion on the Refrigeration System 19

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

Measure the Input Voltage 21

Test Fuses and Circuit Breakers 22

Check the Thermostat Operation 23

Check the Compressor Motor Start Relay 24

Check the Start and Run Capacitors 25

Test the Compressor for Open or Shorted Windings 26

Test the Compressor Motor for Grounded Windings 27

Identify Unmarked Compressor Terminals 28

Check the Fan Motor Run Capacitor 29

Test Fan Motor for Open, Shorted, or Grounded Windings 30

Two Types of Blowers 31

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

Test a Blower Motor 33

Replace a Blower Motor 34

Unit Replacement 35

Air Conditioners with SEER 13 Ratings For more detail contact us 36