Air Conditioning and Refrigeration Repair by Fischer, Roger -- Read -- Imperial Library of Trantor

Index

Cover AIR CONDITIONING AND REFRIGERATION REPAIR, SECOND EDITION Copyright Page Contents Preface Acknowledgments Introduction 1 Basic Electricity for Refrigeration

Electricity Ohm’s Law

2 Test Meters

Checking Ac Voltage Checking Resistance with the Ohmmeter Checking Current with Clamp-On Ammeter Checking Current with In-Line Dc Ammeter Units and Prefixes for Electrical Measurement Evaluation of Electrical Components

3 Compressors

Hermetic Compressor Semi-Hermetic Compressor Electrical Connecting Terminals Compressor Testing Refrigeration Valves (Compressor Reed Valves)

4 Capacitors and Fuses

Types of Motor Capacitors Checking a Capacitor Holding-A-Charge Test Fuses Testing Fuses

5 Relays and Contactors

Current Relay Potential Relay Hot-Wire Relay Bimetal Contacts Relays and Contactors

6 Transformers

Wattage Rating Distance Between Transformer and Control Step-up Transformers Testing Transformers

7 Circuit Breakers

Non-Trip Quick-Trip Time-Delay Breaker (Slow Trip) Testing

8 Motor Starters

Auxiliary Switches

9 Safety Controls

Electrical Safety Controls Mechanical Protection Controls

10 Evaporator Section

Heat Strips (Air Handler)

11 Thermostats

Wiring Sub-Base Terminal Identification Differential Leveling Sub-Base for Mercury Switch Thermostats Pneumatic Accustats

12 Optional Components in Condensing Unit

Crankcase Heater Receiver Accumulator Hot Gas Mufflers Driers-Dehydrators Replaceable-Core, Shell-Type Filter Drier Strainers Sight Glasses Solenoid Valves

13 Wiring Schematics 14 Properties of Refrigerants

Refrigerants Color Coding Temperatures

15 Basic Mechanical Refrigeration System

Compressor Condenser (Air-Cooled) Condenser (Water-Cooled) Water Source Evaporator-DX Metering Devices

16 Humidity Control 17 Basic Air Conditioning Operation 18 Optional Controls

Fire Stat Smoke Detector Sail Switch or Pressure Switch Oil Pressure Failure Control. Solenoid Valve

19 Piping

Copper PVC Galvanized

20 Soldering

50-50 Solder 95-5 Solder Stay Brite Sil-Fos Silver Solder

21 Flare and Compression Fittings 22 Filter Driers and Air Filtration

Air Filtration

23 Fan Systems

Rules for Propeller Fan Rotation Increasing Cfm by Increasing Motor Speed Throttling Fans Throttling Water Pumps Fan Vibration Direction of Discharge Air and Fan Rotation

24 Pulleys and Belts

Belt Replacement Fan Speeds Sheave Alignment

25 Leak Testing

Condensing Unit Evaporator Unit Isolation Test Vacuum Pump

26 Charging the System

Air Conditioning Charging Tables Service Manifold and Gauges Sight Glasses Charging Cylinder Service Valves

27 Field Repairs of Semi-Hermetic Compressors 28 Heat Pumps 29 Window Units 30 Preventive Maintenance

Condensing Unit Compressor Evaporator Thermostat

31 Troubleshooting

Condensing Unit and Evaporator Not Operating Evaporator Section Blowing Warm Air Condenser Unit and Evaporator Section Operating Not Cooling Enough, Ice on Suction Line Condensing Unit Operating, Evaporation Operating, Insufficient Cooling Blown Fuse or Tripped Circuit Breaker Unit Stops Operation, Operating When Technician Arrives Cleanup of Compressor Burn-Out. Noise Complaint Odors

32 Automotive Air Conditioning 33 Heat Reclaim 34 Refrigeration

Remote Systems Reach-In Coolers Domestic Refrigerator

35 Tools

Multimeter Clamp-On Ammeter Manifold and Gauges Oxygen-Acetylene Soldering Outfit Leak Detector Electric Drill Electric Screwdriver Soldering (Iron-Gun) Adjustable Wrenches Nut Drivers Standard Screwdrivers Phillips Screwdrivers Allen Wrenches Thermometers Pliers Hammer Socket Wrenches Tubing Cutters Flaring Tool Swaging Tool Inspection Mirror Service-Valve Wrench Crimping Tool

36 Geothermodynamics 37 Solar Energy

Collector Circulating Pump Hot Water Sensing Thermostat Thermo-Bank Hot Air Solar Collectors

Index

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