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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
