xxiii CHAPTER 51 Commercial Refrigeration Component Selection ...................1378 51.1 Sizing Compressors, Condensers, and Evaporators ...............................1380 51.2 Calculating Theoretical Compressor Volume .............................................1386 51.3 Designing Piping ...............................1388 Section 15 Installing and Servicing Commercial Refrigeration Systems CHAPTER 52 Installing Commercial Systems ...........................................1398 52.1 Types of Commercial Installations ......................................1400 52.2 Codes and Standards ....................... 1401 52.3 Installing Condensing Units .............. 1401 52.4 Installing Expansion Valves ..............1404 52.5 Installing Evaporators .......................1405 52.6 Installing Refrigerant Lines ...............1406 52.7 Installing Electric Motors .................. 1411 52.8 Testing Installations .......................... 1414 52.9 Charging Commercial Systems ........ 1415 52.10 Starting a Commercial Refrigeration System ........................ 1418 CHAPTER 53 Troubleshooting Commercial Systems—System Diagnosis.......1422 53.1 Commercial Refrigeration Troubleshooting ................................1424 53.2 Checking Refrigerant Charge ...........1430 53.3 Diagnosing Common Symptoms ......1431 53.4 Troubleshooting Ice Machines ..........1454 CHAPTER 54 Troubleshooting Commercial Systems—Component Diagnosis ........................................1466 54.1 General Inspection Overview ...........1468 54.2 Checking Electrical Circuits ..............1468 54.3 Checking External Motors ................1469 54.4 Checking Condensing Units .............1470 54.5 Checking Liquid Lines ......................1484 54.6 Checking Thermostatic Expansion Valves (TXVs) ..................................1485 54.7 Checking Electronic Expansion Valves (EEVs) ..................................1486 54.8 Checking Evaporator Pressure Regulators (EPRs) ...........................1488 54.9 Checking Hot-Gas Valves .................1489 54.10 Checking Solenoid Valves ..............1489 54.11 Checking Evaporators .....................1489 54.12 Checking Suction Lines ..................1491 CHAPTER 55 Servicing Commercial Systems ...........................................1496 55.1 System Service Fundamentals .........1498 Servicing Motors and Compressors ....................................1502 55.3 Servicing Condensers ......................1507 55.4 Servicing Liquid Lines ...................... 1513 55.5 Servicing Evaporators ...................... 1515 55.6 Servicing Valves ............................... 1516 55.7 Reconditioning Equipment after a Flood ................................................ 1519 Appendixes ...................................1524 Appendix A: Service Information ..............1525 Appendix B: Troubleshooting Charts ........1529 Appendix C: Refrigerants .........................1542 Appendix D: Electricity and Electronics .......................................1552 Appendix E: Heat, Temperature, and Pressure ...........................................1553 Appendix F: Equivalent Charts .................1558 Appendix G: EPA Certification ..................1566 Appendix H: HVACR-Related Associations and Organizations ............................1573 Glossary ..........................................1575 Index ................................................1619