Hermetic Compressor - Tecumseh

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12 SERVICE HANDBOOK Follow the Labels Tecumseh Products Company compressors have labels and markings with important information. For your safety and the safety of others, read the labels and markings on the product. Serial Label Information The only source for complete compressor information is on the compressor serial label. On earlier compressors, the serial plate is usually spot-welded on the upper housing of the compressor. For current compressors, the serial label is affixed in the same location. Both describe the characteristics of the compressor. The months are identified in Table 2-1. BILL OF MATERIAL NUMBER SECOND LETTER INDICATES MONTH (SEE TABLE 2-1), NEXT TWO DIGITS INDICATE DAY OF MONTH, THE FOLLOWING 2 DIGITS INDICATE YEAR ELECTRICAL RATING VOLTS - HERTZ FIGURE 2-3: SERIAL NUMBER A H 3 0 1 F T - 0 7 7 SE1490C 281254 AH5540E V230/208HZ60 LRA103.0 V200 HZ50 PHI USA P PHASE Example of compressor serial plate COMPRESSOR MODEL NUMGER BILL OF MATERIAL NUMBER ELECTRICAL RATING VOLTS - HERTZ - LRA - PHASE COMPRESSOR MODEL NUMBER LETTER INDICATES MONTH (SEE TABLE 2-1), NEXT 2 DIGITS INDICATE DAY OF THE MONTH, FOLLOWING 2 DIGITS INDICATE YEAR FIGURE 2-4: Example of compressor serial label MANUFACTURING CODE DATE MONTH=SEPTEMBER J2400 YEAR=2000 DAY = 24 THE LETTER REPRESENTS THE MONTH (SEE TABLE 2-1). THE NUMBERS REPRESENT THE YEAR. FIGURE 2-5: Example of condensing unit serial label
13 Table 2-1: Serial Label Month Identifiers A – January D – April G – July K – October B – February E – May H – August L – November C – March F – June J – September M – December Basic Application Information for Hermetic Compressors Tecumseh hermetic compressors are engineered to do specific air conditioning and refrigeration tasks. Hermetic compressors are designed for a particular evaporator temperature range and a specific refrigerant. Evaporator Temperatures The key specification is the evaporator temperature of the system. Compressors that are operating outside their design evaporator temperature range can be expected to have poor pumping efficiency and experience motor problems. Tecumseh hermetic compressors are designed for one of the following evaporator temperature ranges shown in Table 2-2. Refrigerant Use only the serial label refrigerant when charging the system. Using a different refrigerant can lead to excess system pressure, damage to the compressor and an explosion. For example, using R-404A in a compressor designed for R-134a can lead to higher operating pressures that can overload the bearings and overwork the motor. Use of a refrigerant other than the serial label refrigerant will void the compressor warranty. Air conditioning Table 2-2: Evaporator Temperature Ranges Application Approved Evaporator Temperatures +32°F to +55°F Improved performance air conditioning Heat pump (approved models) High evaporator temperature Medium evaporator temperature Low evaporator temperature (normal torque motor) Low evaporator temperature (high torque motor) Commercial Low Evaporator Temperature - Vapor Injection (high torgue motor) Low Evaporator Temperature - Liquid Injection (high torque motor) *Some exceptions exist, contact Tecumseh Products Company +32°F to +57°F -15°F to +55°F +20°F to +55°F -10°F to +30°F -10°F to +30°F -40°F to +10°F 0°F to +50°F* -40°F to +10°F -40°F to +10°F
Page 1: Hermetic Compressor Service Handboo
Page 5 and 6: Handbook Purpose and Description Te
Page 7: Table of Contents Servicing 29 Intr
Page 10 and 11: 2 SERVICE HANDBOOK Introduction Tec
Page 12 and 13: 4 SERVICE HANDBOOK Refrigerants and
Page 14 and 15: 6 SERVICE HANDBOOK Prevention of Wa
Page 17 and 18: Model and Application Chapter 2
Page 19: 11 AEA4440YXA XC Condensing Unit Mo
Page 24 and 25: 16 SERVICE HANDBOOK Single-phase Co
Page 26 and 27: 18 SERVICE HANDBOOK Minimum startin
Page 28 and 29: 20 SERVICE HANDBOOK External Line-B
Page 30 and 31: 22 SERVICE HANDBOOK Relay Type Tabl
Page 32 and 33: 24 SERVICE HANDBOOK FIGURE 3-16: Po
Page 34 and 35: 26 SERVICE HANDBOOK Capacitor Type
Page 37 and 38: Servicing Chapter 4
Page 39 and 40: Servicing 31 Introduction to Servic
Page 41 and 42: 33 Step 1: Check for a Ground Fault
Page 43 and 44: 35 Table 4-1: Troubleshooting Chart
Page 45 and 46: 37 Table 4-1: Troubleshooting Chart
Page 47 and 48: 39 Complaint Possible Causes Respon
Page 49 and 50: 41 electrocution, always follow the
Page 51 and 52: 43 Checking for Other Electrical Pr
Page 53 and 54: 45 Step 1: Before Continuing with T
Page 55 and 56: 47 Step 1: Before Continuing Troubl
Page 61 and 62: 53 This CSIR compressor has the fol
Page 63 and 64: 55 Step 6: Check Start Capacitor CA
Page 67 and 68: 59 This CSR compressor has the foll
Page 69 and 70: 61 to the OEM service information.
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63 Step 1: Before Continuing with T
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Page 75 and 76:
Page 77 and 78:
Page 81 and 82:
Installation and Replacement Chapte
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75 Discharge Tube Discharge Tube AK
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77 Table 5-1: R-22 Refrigerant Line
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79 Table 5-4: R-134a Refrigerant Li
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81 Table 5-7: R-404A Refrigerant Li
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83 7. If a suction line accumulator
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85 WARNING! Never use a compressor
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87 Replacing Compressors in Water-U
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90 SERVICE HANDBOOK Control of Liqu
Page 100 and 101:
92 SERVICE HANDBOOK Crankcase Heate
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94 SERVICE HANDBOOK Starting a Syst
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96 SERVICE HANDBOOK FIGURE 6-10: Li
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98 SERVICE HANDBOOK Accumulator Sel
Page 109 and 110:
Appendix
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103 Condenser Fan Receiver Tank Hea
Page 113 and 114:
105 Reciprocating Compressor FIGURE
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107 Table A-1: continued Capillary
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109 Source Table A-4: Most Common O
Page 120:
When it comes to compressors... Thi
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Hermetic Compressor - Tecumseh

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