BTU Buddy Notebook

COOLING SEASON. Introduction. Service Call 1. Servicing A Frozen Suction Line and Compressor. Service Call 2. Charging an Expansion Valve System after Loss of Charge. Service Call 3. Charging a Fixed Bore System with a Fixed Bore Office. Service Call 4. Cleaning a Very Dirty Air Cooled Condenser. Service Call 5. A Conversation about Vacuum Procedures. Service Call 6. Removing Water from a Wet Heat Pump. Service Call 7. Changing a Badly Burned Compressor. Service Call 8. Burned Four-Way Valve Coil on a Heat Pump. Service Call 9. Discovering Reduced Airflow in the Ducts. Service Call 10. Fixing a Chronic Leaking Residential A/C Unit. Service Call 11. Quickly Cooling a Hot Hermetic Compressor. Service Call 12. Troubleshooting a Water-Cooled Condenser. Service Call 13. Examining a Cooling Tower Problem. Service Call 14. Compressor with Refrigerant Flooding Back. Service Call 15. Compressor with Low Oil Level. Service Call 16. A Training Lunch with BTU Buddy. Service Call 17. A Compressor with Internal Leak. Service Call 18. A Stopped Up Condensate Line. Service Call 19. Outdoor Unit with Restricted Airflow. Service Call 20. Repairing a Restricted Liquid Line. Service Call 21. High-Efficiency Cooling in Mild Weather. Service Call 22. Frozen Evaporator on a 15-Ton Cooling Unit. Service Call 23. High Head Pressure, Air in the System. Service Call 24. Stopped Up Condensate Line. Service Call 25. 50-Ton System with a Defective Solenoid Valve. Service Call 26. Reciprocating Chiller with Fouled Condenser Tubes. Service Call 27. Topping Off the Charge for a Fixed Bore Metering Device System. Service Call 28. Topping Off the Charge for a TXV System. Service Call 29. Helping on a 100o F Day. Service Call 30. A Cooling Tower Starved for Water. Service Call 31. Evacuation Leak. HEATING SEASON. Service Call 32. Working with a Gas Furnace that is Down Drafting. Service Call 33. Handling an Over-Fired Boiler. Service Call 34. Tackling Low Airflow with Electric Heat. Service Call 35. A

Now retired, Bill Johnson has taught heating, air conditioning, and refrigeration for more than two decades in various technical colleges and factory schools. A graduate of Southern Technical Institute, a branch of Georgia Tech in Atlanta, he has also served as service manager for a major manufacturer for six years. Mr. Johnson owned his own HVAC/R business for 10 years and has been a member of the Refrigeration Service Engineers Society and the American Society of Heating Refrigerating Air Conditioning Engineers. His authoring credits include three major textbooks on the market today as well as their ancillary materials. He has also written monthly articles--BTU Buddy--that are available online.