Figure 1-1. Air Conditioner - TM-9-4120-398-140010
CHAPTER 1 INTRODUCTION - TM-9-4120-398-140011
Section II. EQUIPMENT DESCRIPTION - TM-9-4120-398-140012
LOCATION AND DESCRIPTION OF MAJOR COMPONENTS - TM-9-4120-398-140013
Figure 12. Location of Major Components
PERFORMANCE DATA - TM-9-4120-398-140015
Figure 13. Air Conditioner Airflow System
Figure 1-4. Refrigeration System Schematic Diagram
REFRIGERATION SYSTEM. - TM-9-4120-398-140018
ELECTRICAL CONTROL SYSTEM
AUTOMATIC MODE HEATING
TABLE 1-1. AIR CONDITIONER SAFETY CONTROLS
FIGURE 1-5. AIR CONDITIONER ELECTRICAL SCHEMATIC DIAGRAM
CHAPTER 2 OPERATING INSTRUCTIONS - TM-9-4120-398-140023
Figure 2-1. Operator's Controls - TM-9-4120-398-140024
TABLE 2-1. OPERATOR PREVENTIVE MAINTENANCE CHECKS AND SERVICES - TM-9-4120-398-140025
TABLE 2-1. OPERATOR PREVENTIVE MAINTENANCE CHECKS AND SERVICES - Continued - TM-9-4120-398-140026
GENERAL OPERATING PROCEDURES - TM-9-4120-398-140027
General operation of controls
Table 2-2. OPERATOR CONTROL SETTINGS - TM-9-4120-398-140029
Figure 2-4. Fresh Air Damper (Door) Adjustment
OPERATION IN AUTO MODE (COOLING OR HEATING)
Figure 2-7. Fresh Air Damper (Door Adjustment
RESET MODE
Figure 2-10. OFF-RESET Setting
Figure 2-11. Information Plate
Section IV. OPERATING UNDER UNUSUAL CONDITIONS
OPERATION IN DUSTY OR SANDY CONDITIONS. - TM-9-4120-398-140037
CHAPTER 3 OPERATOR'S MAINTENANCE INSTRUCTIONS - TM-9-4120-398-140038
AIR CONDITIONER DOES NOT START IN ANY MODE. - TM-9-4120-398-140039
REDUCED HEATING CAPACITY. - TM-9-4120-398-140040
CHAPTER 4 UNIT MAINTENANCE INSTRUCTIONS - TM-9-4120-398-140041
CHECKING UNPACKED EQUIPMENT. - TM-9-4120-398-140042
Figure 4-1. Installation Dimcnsions
Figure 4-2. Air Conditioner Duct Attachment to Structure
INSTALLATION INSTRUCTIONS - TM-9-4120-398-140045
Section III. UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) - TM-9-4120-398-140046
INTRODUCTION, INSPECTION, AND SERVICE - TM-9-4120-398-140047
TABLE 4-1. UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) - TM-9-4120-398-140048
TABLE 4-1. UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) - Continued - TM-9-4120-398-140049
TABLE 4-1. UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) - Continued - TM-9-4120-398-140050
TABLE 4-1. UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) - Continued - TM-9-4120-398-140051
Section IV. UNIT TROUBLESHOOTING - TM-9-4120-398-140052
TABLE 4-2. UNIT TROUBLESHOOTING - TM-9-4120-398-140053
AIR CONDITIONER STOPS - AUTO MODE.
EXCESSIVE COOLING.
MOTOR/COMPRESSOR UNIT INOPERATIVE (OTHER COMPONENTS FUNCTIONING).
CONDENSER FAN INOPERATIVE.
Section V. UNIT MAINTENANCE PROCEDURES - TM-9-4120-398-140058
INFORMATION PLATES - TM-9-4120-398-140059
Rivet mounted.
CONDENSER INLET GRILLE
Figure 4-6. Condenser Inlet Grille
EVAPORATOR ACCESS DOOR
Installation. - TM-9-4120-398-140064
EVAPORATOR ACCESS PANEL
Installation. - TM-9-4120-398-140066
CONDENSER ACCESS DOOR
Figure 4-9. Condenser Access Door
CONDENSER OUTLET PANEL AND GRILLE
To replace gasket:
TOP FRONT PANEL
To replace insulation:
CONTROL BOARD PANEL
Installation. - TM-9-4120-398-140074
FRONT PANEL
Installation. - TM-9-4120-398-140076
SUPPLY DUCT ADAPTER
Figure 4-14. Supply Duct Adapter
RETURN DUCT ADAPTER
To replace gasket or insulation:
AIR FILTER - TM-9-4120-398-140081
Figure 4-16. Air Filter
FRESH AIR DAMPER - TM-9-4120-398-140083
To replace gasket
CONDENSATE TRAPS AND DRAIN HOSES
Figure 4-18. Condensate Traps and Drain Hoses
EXTERNAL CONTROL PANEL
Figure 4-19. External Control Panel
MODE SELECTOR SWITCH
Installation. - TM-9-4120-398-140090
THERMOSTAT - TM-9-4120-398-140091
Figure 4-22. Thermostat Terminal Location and Continuity Points
Removal. - TM-9-4120-398-140093
CIRCUIT BREAKER
Installation. - TM-9-4120-398-140095
INTERNAL CONTROL BOARD
Motor starter
Relays K4 and KS
Figure 4-29. Internal Control Board
Installation. - TM-9-4120-398-140100
ELECTRICAL WIRING REPAIR GENERAL.
Table 4-3. Wire List - TM-9-4120-398-140102
Table 4-4. Voltage and Resistance Test Points
POWER CABLE
Installation. - TM-9-4120-398-140105
EVAPORATOR BLOWER MOTOR
Installation. - TM-9-4120-398-140107
EVAPORATOR BLOWER
Installation. - TM-9-4120-398-140109
EVAPORATOR BLOWER BELT
Figure 4-33. Evaporator Blower Belt Replacement
PULLEYS
Figure 4-34. Evaporator Blower and Motor Speed Adjustment
HEATING ELEMENT
Installation. - TM-9-4120-398-140115
CONDENSER IMPELLER
Figure 4-36. Condenser Impeller
CONDENSER FAN MOTOR
Figure 4-37. Condenser Fan Motor
HIGH TEMPERATURE CUTOUT SWITCH
Installation. - TM-9-4120-398-140121
Section VI PREPARATION FOR STORAGE OR SHIPMENT - TM-9-4120-398-140122
CHAPTER 5 DIRECT SUPPORT MAINTENANCE INSTRUCTIONS - TM-9-4120-398-140123
Section II. DIRECT SUPPORT TROUBLESHOOTING - TM-9-4120-398-140124
COMPRESSOR SHORT CYCLES. - TM-9-4120-398-140125
INSUFFICIENT COOLING ACTION. - TM-9-4120-398-140126
SIGHT GLASS APPEARS YELLOW INSTEAD OF GREEN. - TM-9-4120-398-140127
Section III. DIRECT SUPPORT MAINTENANCE PROCEDURES - TM-9-4120-398-140128
REFRIGERATION SYSTEM REPAIRS GENERAL.
DISCHARGING THE REFRIGERANT SYSTEM - TM-9-4120-398-140130
DISCHARGING THE REFRIGERANT SYSTEM (cont)
PURGING THE REFRIGERANT SYSTEM - TM-9-4120-398-140132
Figure 52. Nitrogen Purging Connection
BRAZING/DEBRAZING PROCEDURES - TM-9-4120-398-140134
Brazing - TM-9-4120-398-140135
LEAK TESTING THE REFRIGERANT SYSTEM - TM-9-4120-398-140136
Testing procedures. - TM-9-4120-398-140137
To pressurize a system that has been discharged and purged for leak testing with an electronic detector: - TM-9-4120-398-140138
EVACUATING THE REFRIGERANT SYSTEM
Figure 5-3. Evacuation of Refrigeration System
CHARGING THE REFRIGERATION SYSTEM - TM-9-4120-398-140141
Figure 5-4. Refrigerant Charging
CHARGING THE REFRIGERATION SYSTEM (cont) - TM-9-4120-398-140143
CHARGING THE REFRIGERATION SYSTEM (cont) - TM-9-4120-398-140144
REFRIGERANT PRESSURE CHECK - TM-9-4120-398-140145
Figure 5-5. Pressure Test Connection.
TABLE 5-2. PRESSURE-TEMPERATURE RELATIONSHIP OF SATURATED REFRIGERANT -22
REFRIGERANT PRESSURE CHECK
EVAPORATOR COIL - TM-9-4120-398-140149
Figure 5-6. Evaporator Coil
Removal. - TM-9-4120-398-140151
Installation. - TM-9-4120-398-140152
THERMOSTATIC EXPANSION VALVE
Removal. - TM-9-4120-398-140154
Installation. - TM-9-4120-398-140155
LIQUID QUENCH VALVE
Removal. - TM-9-4120-398-140157
INSTALLATION - TM-9-4120-398-140158
ACCUMULATOR
Removal. - TM-9-4120-398-140160
Installation. - TM-9-4120-398-140161
CRANKCASE HEATER
Figure 510. Crankcase Heater
HIGH PRESSURE CUT-OUT SWITCH
Installation - TM-9-4120-398-140165
CHARGING VALVES
Installation. - TM-9-4120-398-140167
CONDENSER COIL - TM-9-4120-398-140168
Removal. - TM-9-4120-398-140169
Installation. - TM-9-4120-398-140170
SIGHT LIQUID INDICATOR
Installation. - TM-9-4120-398-140172
FILTER, DRIER
Removal. - TM-9-4120-398-140174
FUSIBLE PLUG
Removal. - TM-9-4120-398-140176
COMPRESSOR - TM-9-4120-398-140177
TEST - TM-9-4120-398-140178
Installation. - TM-9-4120-398-140179
TUBING AND FITTINGS.
CHAPTER 6 GENERAL SUPPORT MAINTENANCE INSTRUCTIONS - TM-9-4120-398-140181
Insulation/removal.
APPENDIX A REFERENCES - TM-9-4120-398-140183
APPENDIX MAINTENANCE ALLOCATION CHART - TM-9-4120-398-140184
EXPLANATION OF COLUMNS IN THE MAC, SECTION II - TM-9-4120-398-140185
EXPLANATION OF COLUMNS IN TOOL AND TEST EQUIPMENT REQUIREMENTS, SECTION III
Section II. MAINTENANCE ALLOCATION CHART - TM-9-4120-398-140187
Section II. MAINTENANCE ALLOCATION CHART - CONT - TM-9-4120-398-140188
Section II. MAINTENANCE ALLOCATION CHART - CONT - TM-9-4120-398-140189
Section II. MAINTENANCE ALLOCATION CHART - CONT - TM-9-4120-398-140190
Section III. TOOL AND TEST EQUIPMENT REQUIREMENTS - TM-9-4120-398-140191
APPENDIX C COMPONENTS OF END ITEM AND BASIC ISSUE ITEMS LISTS - TM-9-4120-398-140192
Figure C-1. Components of End Item - TM-9-4120-398-140193
Figure C2. Basic Issue Items
APPENDIX D ADDITIONAL AUTHORIZATION LIST - TM-9-4120-398-140195
APPENDIX E EXPENDABLE DURABLE SUPPLIES AND MATERIALS LIST
Section II. EXPENDABLE DURABLE SUPPLIES AND MATERIALS LIST (cont) - TM-9-4120-398-140197
Section II. EXPENDABLE DURABLE SUPPLIES AND MATERIALS LIST (cont) - TM-9-4120-398-140198
GLOSSARY - TM-9-4120-398-140199
TM-9-4120-398-14 Air Conditioner 54 000 BTU/HR 208/230 Volt Three Phase 50/60 Hertz Model AH-54 NSN 4120-01-283-4096 Manual
CHAPTER 1 INTRODUCTION - TM-9-4120-398-140011
Section II. EQUIPMENT DESCRIPTION - TM-9-4120-398-140012
LOCATION AND DESCRIPTION OF MAJOR COMPONENTS - TM-9-4120-398-140013
Figure 12. Location of Major Components
PERFORMANCE DATA - TM-9-4120-398-140015
Figure 13. Air Conditioner Airflow System
Figure 1-4. Refrigeration System Schematic Diagram
REFRIGERATION SYSTEM. - TM-9-4120-398-140018
ELECTRICAL CONTROL SYSTEM
AUTOMATIC MODE HEATING
TABLE 1-1. AIR CONDITIONER SAFETY CONTROLS
FIGURE 1-5. AIR CONDITIONER ELECTRICAL SCHEMATIC DIAGRAM
CHAPTER 2 OPERATING INSTRUCTIONS - TM-9-4120-398-140023
Figure 2-1. Operator's Controls - TM-9-4120-398-140024
TABLE 2-1. OPERATOR PREVENTIVE MAINTENANCE CHECKS AND SERVICES - TM-9-4120-398-140025
TABLE 2-1. OPERATOR PREVENTIVE MAINTENANCE CHECKS AND SERVICES - Continued - TM-9-4120-398-140026
GENERAL OPERATING PROCEDURES - TM-9-4120-398-140027
General operation of controls
Table 2-2. OPERATOR CONTROL SETTINGS - TM-9-4120-398-140029
Figure 2-4. Fresh Air Damper (Door) Adjustment
OPERATION IN AUTO MODE (COOLING OR HEATING)
Figure 2-7. Fresh Air Damper (Door Adjustment
RESET MODE
Figure 2-10. OFF-RESET Setting
Figure 2-11. Information Plate
Section IV. OPERATING UNDER UNUSUAL CONDITIONS
OPERATION IN DUSTY OR SANDY CONDITIONS. - TM-9-4120-398-140037
CHAPTER 3 OPERATOR'S MAINTENANCE INSTRUCTIONS - TM-9-4120-398-140038
AIR CONDITIONER DOES NOT START IN ANY MODE. - TM-9-4120-398-140039
REDUCED HEATING CAPACITY. - TM-9-4120-398-140040
CHAPTER 4 UNIT MAINTENANCE INSTRUCTIONS - TM-9-4120-398-140041
CHECKING UNPACKED EQUIPMENT. - TM-9-4120-398-140042
Figure 4-1. Installation Dimcnsions
Figure 4-2. Air Conditioner Duct Attachment to Structure
INSTALLATION INSTRUCTIONS - TM-9-4120-398-140045
Section III. UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) - TM-9-4120-398-140046
INTRODUCTION, INSPECTION, AND SERVICE - TM-9-4120-398-140047
TABLE 4-1. UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) - TM-9-4120-398-140048
TABLE 4-1. UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) - Continued - TM-9-4120-398-140049
TABLE 4-1. UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) - Continued - TM-9-4120-398-140050
TABLE 4-1. UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) - Continued - TM-9-4120-398-140051
Section IV. UNIT TROUBLESHOOTING - TM-9-4120-398-140052
TABLE 4-2. UNIT TROUBLESHOOTING - TM-9-4120-398-140053
AIR CONDITIONER STOPS - AUTO MODE.
EXCESSIVE COOLING.
MOTOR/COMPRESSOR UNIT INOPERATIVE (OTHER COMPONENTS FUNCTIONING).
CONDENSER FAN INOPERATIVE.
Section V. UNIT MAINTENANCE PROCEDURES - TM-9-4120-398-140058
INFORMATION PLATES - TM-9-4120-398-140059
Rivet mounted.
CONDENSER INLET GRILLE
Figure 4-6. Condenser Inlet Grille
EVAPORATOR ACCESS DOOR
Installation. - TM-9-4120-398-140064
EVAPORATOR ACCESS PANEL
Installation. - TM-9-4120-398-140066
CONDENSER ACCESS DOOR
Figure 4-9. Condenser Access Door
CONDENSER OUTLET PANEL AND GRILLE
To replace gasket:
TOP FRONT PANEL
To replace insulation:
CONTROL BOARD PANEL
Installation. - TM-9-4120-398-140074
FRONT PANEL
Installation. - TM-9-4120-398-140076
SUPPLY DUCT ADAPTER
Figure 4-14. Supply Duct Adapter
RETURN DUCT ADAPTER
To replace gasket or insulation:
AIR FILTER - TM-9-4120-398-140081
Figure 4-16. Air Filter
FRESH AIR DAMPER - TM-9-4120-398-140083
To replace gasket
CONDENSATE TRAPS AND DRAIN HOSES
Figure 4-18. Condensate Traps and Drain Hoses
EXTERNAL CONTROL PANEL
Figure 4-19. External Control Panel
MODE SELECTOR SWITCH
Installation. - TM-9-4120-398-140090
THERMOSTAT - TM-9-4120-398-140091
Figure 4-22. Thermostat Terminal Location and Continuity Points
Removal. - TM-9-4120-398-140093
CIRCUIT BREAKER
Installation. - TM-9-4120-398-140095
INTERNAL CONTROL BOARD
Motor starter
Relays K4 and KS
Figure 4-29. Internal Control Board
Installation. - TM-9-4120-398-140100
ELECTRICAL WIRING REPAIR GENERAL.
Table 4-3. Wire List - TM-9-4120-398-140102
Table 4-4. Voltage and Resistance Test Points
POWER CABLE
Installation. - TM-9-4120-398-140105
EVAPORATOR BLOWER MOTOR
Installation. - TM-9-4120-398-140107
EVAPORATOR BLOWER
Installation. - TM-9-4120-398-140109
EVAPORATOR BLOWER BELT
Figure 4-33. Evaporator Blower Belt Replacement
PULLEYS
Figure 4-34. Evaporator Blower and Motor Speed Adjustment
HEATING ELEMENT
Installation. - TM-9-4120-398-140115
CONDENSER IMPELLER
Figure 4-36. Condenser Impeller
CONDENSER FAN MOTOR
Figure 4-37. Condenser Fan Motor
HIGH TEMPERATURE CUTOUT SWITCH
Installation. - TM-9-4120-398-140121
Section VI PREPARATION FOR STORAGE OR SHIPMENT - TM-9-4120-398-140122
CHAPTER 5 DIRECT SUPPORT MAINTENANCE INSTRUCTIONS - TM-9-4120-398-140123
Section II. DIRECT SUPPORT TROUBLESHOOTING - TM-9-4120-398-140124
COMPRESSOR SHORT CYCLES. - TM-9-4120-398-140125
INSUFFICIENT COOLING ACTION. - TM-9-4120-398-140126
SIGHT GLASS APPEARS YELLOW INSTEAD OF GREEN. - TM-9-4120-398-140127
Section III. DIRECT SUPPORT MAINTENANCE PROCEDURES - TM-9-4120-398-140128
REFRIGERATION SYSTEM REPAIRS GENERAL.
DISCHARGING THE REFRIGERANT SYSTEM - TM-9-4120-398-140130
DISCHARGING THE REFRIGERANT SYSTEM (cont)
PURGING THE REFRIGERANT SYSTEM - TM-9-4120-398-140132
Figure 52. Nitrogen Purging Connection
BRAZING/DEBRAZING PROCEDURES - TM-9-4120-398-140134
Brazing - TM-9-4120-398-140135
LEAK TESTING THE REFRIGERANT SYSTEM - TM-9-4120-398-140136
Testing procedures. - TM-9-4120-398-140137
To pressurize a system that has been discharged and purged for leak testing with an electronic detector: - TM-9-4120-398-140138
EVACUATING THE REFRIGERANT SYSTEM
Figure 5-3. Evacuation of Refrigeration System
CHARGING THE REFRIGERATION SYSTEM - TM-9-4120-398-140141
Figure 5-4. Refrigerant Charging
CHARGING THE REFRIGERATION SYSTEM (cont) - TM-9-4120-398-140143
CHARGING THE REFRIGERATION SYSTEM (cont) - TM-9-4120-398-140144
REFRIGERANT PRESSURE CHECK - TM-9-4120-398-140145
Figure 5-5. Pressure Test Connection.
TABLE 5-2. PRESSURE-TEMPERATURE RELATIONSHIP OF SATURATED REFRIGERANT -22
REFRIGERANT PRESSURE CHECK
EVAPORATOR COIL - TM-9-4120-398-140149
Figure 5-6. Evaporator Coil
Removal. - TM-9-4120-398-140151
Installation. - TM-9-4120-398-140152
THERMOSTATIC EXPANSION VALVE
Removal. - TM-9-4120-398-140154
Installation. - TM-9-4120-398-140155
LIQUID QUENCH VALVE
Removal. - TM-9-4120-398-140157
INSTALLATION - TM-9-4120-398-140158
ACCUMULATOR
Removal. - TM-9-4120-398-140160
Installation. - TM-9-4120-398-140161
CRANKCASE HEATER
Figure 510. Crankcase Heater
HIGH PRESSURE CUT-OUT SWITCH
Installation - TM-9-4120-398-140165
CHARGING VALVES
Installation. - TM-9-4120-398-140167
CONDENSER COIL - TM-9-4120-398-140168
Removal. - TM-9-4120-398-140169
Installation. - TM-9-4120-398-140170
SIGHT LIQUID INDICATOR
Installation. - TM-9-4120-398-140172
FILTER, DRIER
Removal. - TM-9-4120-398-140174
FUSIBLE PLUG
Removal. - TM-9-4120-398-140176
COMPRESSOR - TM-9-4120-398-140177
TEST - TM-9-4120-398-140178
Installation. - TM-9-4120-398-140179
TUBING AND FITTINGS.
CHAPTER 6 GENERAL SUPPORT MAINTENANCE INSTRUCTIONS - TM-9-4120-398-140181
Insulation/removal.
APPENDIX A REFERENCES - TM-9-4120-398-140183
APPENDIX MAINTENANCE ALLOCATION CHART - TM-9-4120-398-140184
EXPLANATION OF COLUMNS IN THE MAC, SECTION II - TM-9-4120-398-140185
EXPLANATION OF COLUMNS IN TOOL AND TEST EQUIPMENT REQUIREMENTS, SECTION III
Section II. MAINTENANCE ALLOCATION CHART - TM-9-4120-398-140187
Section II. MAINTENANCE ALLOCATION CHART - CONT - TM-9-4120-398-140188
Section II. MAINTENANCE ALLOCATION CHART - CONT - TM-9-4120-398-140189
Section II. MAINTENANCE ALLOCATION CHART - CONT - TM-9-4120-398-140190
Section III. TOOL AND TEST EQUIPMENT REQUIREMENTS - TM-9-4120-398-140191
APPENDIX C COMPONENTS OF END ITEM AND BASIC ISSUE ITEMS LISTS - TM-9-4120-398-140192
Figure C-1. Components of End Item - TM-9-4120-398-140193
Figure C2. Basic Issue Items
APPENDIX D ADDITIONAL AUTHORIZATION LIST - TM-9-4120-398-140195
APPENDIX E EXPENDABLE DURABLE SUPPLIES AND MATERIALS LIST
Section II. EXPENDABLE DURABLE SUPPLIES AND MATERIALS LIST (cont) - TM-9-4120-398-140197
Section II. EXPENDABLE DURABLE SUPPLIES AND MATERIALS LIST (cont) - TM-9-4120-398-140198
GLOSSARY - TM-9-4120-398-140199
TM-9-4120-398-14 Air Conditioner 54 000 BTU/HR 208/230 Volt Three Phase 50/60 Hertz Model AH-54 NSN 4120-01-283-4096 Manual
