Modern Refrigeration and Air Conditioning
xxi
Section 14
Installing and Servicing Commercial
Systems
Chapter 50
Installing Commercial Systems 1226
50.1 Types of Commercial Installations 1228
50.2 Codes and Standards 1228
50.3 Installing Condensing Units 1229
50.4 Installing Expansion Valves 1231
50.5 Installing Evaporators 1233
50.6 Installing Refrigerant Lines 1235
50.7 Installing Electric Motors 1239
50.8 Testing Installations 1241
50.9 Charging Commercial Systems 1242
50.10 Starting a Commercial Refrigeration
System 1246
Chapter 51
Troubleshooting Commercial Systems—
System Diagnosis 1250
51.1 Commercial Refrigeration
Troubleshooting 1252
51.2 Checking Refrigerant Charge 1257
51.3 Diagnosing Common Symptoms 1258
51.4 Troubleshooting Ice Machines 1279
Chapter 52
Troubleshooting Commercial Systems—
Component Diagnosis 1290
52.1 Checking Electrical Circuits 1292
52.2 Checking External Motors 1293
52.3 Checking Condensing Units 1293
52.4 Checking Liquid Lines 1306
52.5 Checking Thermostatic Expansion Valves
(TXVs) 1306
52.6 Checking Electronic Expansion Valves
(EEVs) 1307
52.7 Checking Evaporator Pressure Regulators
(EPRs) 1309
52.8 Checking Hot-Gas Valves 1310
52.9 Checking Solenoid Valves 1310
52.10 Checking Evaporators 1311
52.11 Checking Suction Lines 1311
Chapter 53
Servicing Commercial Systems 1316
53.1 System Service Fundamentals 1318
53.2 Servicing Motors and Compressors 1322
53.3 Servicing Condensers 1326
53.4 Servicing Liquid Lines 1333
53.5 Servicing Evaporators 1334
53.6 Servicing Valves 1335
53.7 Reconditioning Equipment after a
Flood 1339
Section 15
Professional Development
Chapter 54
Technician Certification 1342
54.1 EPA Certification 1344
54.2 EPA Service Requirements 1349
54.3 Service Organizations and Industry
Associations 1351
Appendixes 1356
Appendix A: Service Information 1357
Appendix B: Troubleshooting Charts 1361
Appendix C: Refrigerants 1374
Appendix D: Electricity and Electronics 1384
Appendix E: Heat, Temperature, and
Pressure 1385
Appendix F: Equivalent Charts 1390
Glossary 1398
Index 1433