Figure 1-1. Air Conditioner - TM-9-4120-388-140011CHAPTER 1INTRODUCTION - TM-9-4120-388-140012LOCATION AND DESCRIPTION OF MAJOR COMPONENTS. - TM-9-4120-388-140013PERFORMANCE DATA.Section Ill. TECHNICAL PRINCIPLES OF OPERATION - TM-9-4120-388-140015 HEATING.CHAPTER 2 OPERATING INSTRUCTIONS - TM-9-4120-388-140017Figure 2-1. Operator's Controls Front - TM-9-4120-388-140018Figure 2-2. Operators Controls RearTable 2-1. Operator Preventive Maintenance Checks and Services - TM-9-4120-388-140020Table 2-1. Operator Preventive Maintenance Checks and Services (Cont.) - TM-9-4120-388-140021Table 2-1. Operator Preventive Maintenance Checks and Services (Cont.) - TM-9-4120-388-140022Table 2-1. Operator Preventive Maintenance Checks and Services (Cont.) - TM-9-4120-388-140023Table 2-1. Operator Preventive Maintenance Checks and Services (Cont.) - TM-9-4120-388-140024Table 2-1. Operator Preventive Maintenance Checks and Services (Cont.) - TM-9-4120-388-140025Section Ill. OPERATION UNDER USUAL CONDITIONS - TM-9-4120-388-140026Figure 2-4. Air Openings and Drains - TM-9-4120-388-140027During cold weatherOPERATION IN VENTILATE MODE. - TM-9-4120-388-140029OPERATION IN LO HEAT MODE - TM-9-4120-388-140030Figure 2-9. Fresh Air Damper (Door) Adjustment - TM-9-4120-388-140031OPERATlON IN HI HEAT MODEFigure 2-13. Louver Adjustment - TM-9-4120-388-140033OPERATION IN COOL MODE. - TM-9-4120-388-140034SHUTDOWN (OFF).Figure 2-19. OFF Setting - TM-9-4120-388-140036Figure 2-20. Information PlatesSection IV. OPERATION UNDER UNUSUAL CONDITIONS - TM-9-4120-388-140038OPERATION IN DUSTY OR SANDY CONDITIONS. - TM-9-4120-388-140039CHAPTER 3 OPERATOR'S MAINTENANCE INSTRUCTIONS - TM-9-4120-388-140040COMPRESSOR DOES NOT START IN COOL MODE. - TM-9-4120-388-140041COMPRESSOR DOES NOT START IN COOL MODE. (CONT)REDUCED COOLING CAPACITY. - TM-9-4120-388-140043REDUCED HEATING CAPACITY - TM-9-4120-388-140044REDUCED HEATING CAPACITY (CONT) - TM-9-4120-388-140045CHAPTER 4 UNIT MAINTENANCE INSTRUCTIONS - TM-9-4120-388-140046RECEIVING INSPECTION - TM-9-4120-388-140047INSTALLATION SITE PREPARATION.Figure 4-2. Installation Dimensions (Sheet 1 of 4)Figure 4-2. Installation Dimensions (Sheet 2 of 4)Figure 4-2. Installation Dimensions (Sheet 3 of 4)Figure 4-2. Installation Dimensions (Sheet 4 of 4)REMOTE MOUNTING OF CONTROL PANEL - TM-9-4120-388-140053Figure 4-5. Control PanelFigure 4-6. Sensing Bulb Secured for Remote MountingFigure 4-8. Interconnecting Remote Control Cable Diagram - TM-9-4120-388-140056CABLE CONNECTIONS THROUGH RETURN (CONDITIONED AIR INTAKE) DUCT - TM-9-4120-388-140057ALTERNATE INPUT POWER CABLE CONNECTOR (J1) LOCATIONS - TM-9-4120-388-140058Figure 4-13. J1 to P13 Harness RemovalINSTALLATIONS THAT REQUIRE REMOVAL OF FABRIC COVER - TM-9-4120-388-140060 INSTALLATION INSTRUCTIONS - Continued.Figure 4-16. Wiring Diagram (Sheet 1 of 3)Figure 4-16. Wiring Diagram (Sheet 2 of 3)Figure 4-16. Wiring Diagram (Sheet 3 of 3)Figure 4-17. Electrical SchematicINPUT POWER CABLE. - TM-9-4120-388-140066Section IV. PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) - TM-9-4120-388-140067Table 4-1. Unit Preventive Maintenance Checks and Services (PMCS) Table 4-1. Unit Preventive Maintenance Checks and Services (PMCS) (Cont) - TM-9-4120-388-140069Table 4-1. Unit Preventive Maintenance Checks and Services (PMCS) (Cont.) - TM-9-4120-388-140070Table 4-1. Unit Preventive Maintenance Checks and Services (PMCS) (Cont.) - TM-9-4120-388-140071Table 4-1. Unit Preventive Maintenance Checks and Services (PMCS) (Cont.) - TM-9-4120-388-140072Table 4-1. Unit Preventive Maintenance Checks and Services (PMCS) (Cont.) - TM-9-4120-388-140073Table 4-1. Unit Preventive Maintenance Checks and Services (PMCS) (Cont.) - TM-9-4120-388-140074Table 4-1. Unit Preventive Maintenance Checks and Services (PMCS) (Cont.) - TM-9-4120-388-140075Section V. TROUBLESHOOTING - TM-9-4120-388-140076AIR CONDITIONER DOES NOT START IN ANY MODE. - TM-9-4120-388-140077CONDITIONED AIR (EVAPORATOR) AND CONDENSER FANS BOTH RUN, BUT COMPRESSOR DOES NOT START AFTER TIME DELAY.CONDITIONED AIR (EVAPORATOR) AND CONDENSER FANS BOTH RUN, BUT COMPRESSOR DOES NOT START AFTER TIME DELAY. (cont)COMPRESSOR STARTS NORMALLY, BUT COMPRESSOR CIRCUIT BREAKER SOON TRIPS. - TM-9-4120-388-140080COMPRESSOR STARTS NORMALLY BUT HIGH OR LOW PRESSURE CUT-OUT SWITCH SOON TRIPS.REDUCED COOLING CAPACITY. - TM-9-4120-388-140082REDUCED COOLING CAPACITY. (cont) - TM-9-4120-388-140083REDUCED COOLING CAPACITY. (CONT) - TM-9-4120-388-140084REDUCED HEATING CAPACITY. - TM-9-4120-388-140085REDUCED HEATING CAPACITY. (CONT)NO HEAT IN EITHER HI HEAT OR LO HEAT NODE.FAN MOTOR (B2) DOES NOT OPERATE. - TM-9-4120-388-140088Section VI. MAINTENANCE PROCEDURESRemoval - TM-9-4120-388-140090CBR (CHEMICAL, BIOLOGICAL, RADIOLOGICAL) DUCT COVER. - TM-9-4120-388-140091ACCESS (SERVICE VALVES) COVER. - TM-9-4120-388-140092 CONNECTOR COVER PLATES.SIDE ACCESS PLATE COVER.CONDITIONED AIR DISCHARGE (OUTLET) GRILLE ASSEMBLY. - TM-9-4120-388-140095CONDITIONED AIR INTAKE GRILLE ASSEMBLY. - TM-9-4120-388-140096CONDENSER (FAN) GUARD. - TM-9-4120-388-140097CONDENSER COIL GUARD. - TM-9-4120-388-140098TOP PANEL. - TM-9-4120-388-140099Inspection. - TM-9-4120-388-140100LOWER FRONT PANEL. - TM-9-4120-388-140101CIRCUIT BREAKER ACCESS PANEL.FILTER (RADIO FREQUENCY) MOUNTING PLATE.REAR PANEL - TM-9-4120-388-140104Inspection. - TM-9-4120-388-140105FRESH AIR (INLET) SCREEN.CONDITIONED AIR FlLTER.CONDITIONED AIR FILTER - Continued.FRESH AIR FlLTERMIST ELIMINATOR. - TM-9-4120-388-140110MIST ELIMINATOR - Continued.ELECTRICAL WIRING REPAIR GENERAL - TM-9-4120-388-140112Table 4-3 Wire List Table 4-3 Wire List (Cont). - TM-9-4120-388-140114Table 4-3 Wire List (Cont). - TM-9-4120-388-140115CONTROL PANEL. - TM-9-4120-388-140116Figure 4-38. Intake Grille and FilterTest/Replace/Repair.WIRING HARNESS, CONTROL PANEL. - TM-9-4120-388-140119Removal. - TM-9-4120-388-140120TEMPERATURE CONTROL THERMOSTAT (S2).Test. - TM-9-4120-388-140122MODE SELECTOR (ROTARY) SWITCH (S1).Replace - TM-9-4120-388-140124CONTROL PANEL HOUSING.BLOCK OFF ASSEMBLY.Figure 4-46. Block Off Assembly InstalledWIRING HARNESSES. - TM-9-4120-388-140128Inspection/Test.RADIO FREQUENCY FILTER (FL1).Inspection/Test - TM-9-4120-388-140131JUNCTION BOX. - TM-9-4120-388-140132JUNCTION BOX REMOVAL INSTALLATION.Figure 4-50. Junction Box Removal/InstallationInstallation. - TM-9-4120-388-140135JUNCTION BOX ACCESS TO INTERNAL COMPONENTS. Reassemble.CIRCUIT BREAKER EXTERNAL RESET CONTROL.JUNCTION BOX HARNESSES.TRANSFORMER (T1). - TM-9-4120-388-140140Installation. - TM-9-4120-388-140141COMPRESSOR CIRCUIT BREAKER (CB1).Removal. - TM-9-4120-388-140143FUSES (F1 , F2 AND F3).RECTIFIER (CR1). - TM-9-4120-388-140145Table 4-4. Rectifier Test.TIME DELAY RELAY (K3).Installation. - TM-9-4120-388-140148COMPRESSOR START RELAY (K1).Installation. - TM-9-4120-388-140150HEATER RELAY (K2).Installation. - TM-9-4120-388-140152FAN MOTOR RELAY (K4).Installation. - TM-9-4120-388-140154TERMINAL BOARDS (TB1 and TB2).JUNCTION BOX HOUSING, PANEL AND COVER.HEAT CUTOUT (THERMOSTAT) SWITCH (S4).HEAT CUTOUT (THERMOSTAT) SWITCH (S4) - Continued.ELECTRIC HEATER (ELEMENTS) (HR1 THROUGH HR6).Heater support installation.EVAPORATOR FAN. - TM-9-4120-388-140161Inspect. - TM-9-4120-388-140162EVAPORATOR AND CONDENSER FAN MOTOR (62) AND CONDENSER FAN.Removal. - TM-9-4120-388-140164Installation - TM-9-4120-388-140165EVAPORATOR COIL CLEANING. - TM-9-4120-388-140166Installation. - TM-9-4120-388-140167CONDENSER COIL CLEANING. - TM-9-4120-388-140168CONDENSATE TRAPS.Inspection. - TM-9-4120-388-140170Section VII. PREPARATION FOR STORAGE OR SHIPMENT.CHAPTER 5 DIRECT SUPPORT MAINTENANCE INSTRUCTIONS - TM-9-4120-388-140172COMPRESSOR WILL NOT START. - TM-9-4120-388-140173COMPRESSOR SHORT CYCLES. - TM-9-4120-388-140174REFRIGERANT SYSTEM CONTINUOUSLY LOSING REFRIGERANT. - TM-9-4120-388-140175UNIT OPERATES CONTINUOUSLY ON COOLING CYCLE.AIR CONDITIONER NOISY DURING OPERATION.Section Ill. MAINTENANCE PROCEDURES - TM-9-4120-388-140178To replace or repair gasket or insulation:EVAPORATOR AND CONDENSER FAN MOTOR (B2) REPAIR. - TM-9-4120-388-140180To replace connector (J12) (lMC):To replace bearings (Welco):To replace bearings (lMC):REFRIGERATION SYSTEM REPAIRS GENERAL - TM-9-4120-388-140184DISCHARGING THE REFRIGERANT SYSTEM. - TM-9-4120-388-140185Figure 5-4. Discharging RefrigerantPURGING THE REFRIGERANT SYSTEM. - TM-9-4120-388-140187PURGING THE REFRIGERANT SYSTEM - Continued. - TM-9-4120-388-140188BRAZING/DEBRAZING PROCEDURES. - TM-9-4120-388-140189Brazing - TM-9-4120-388-140190LEAK TESTING THE REFRIGERANT SYSTEM. - TM-9-4120-388-140191LEAK TESTING THE REFRIGERANT SYSTEM - Continued.EVACUATING THE REFRIGERANT SYSTEM, EVACUATING THE REFRIGERANT SYSTEM - Continued.CHARGING THE REFRIGERATION SYSTEM. - TM-9-4120-388-140195CHARGING THE REFRIGERATION SYSTEM - Continued.Figure 5-8. Service Valve Caps and CoversREFRIGERANT PRESSURE CHECK. - TM-9-4120-388-140198Discharged pressure too high.Suction pressure too low. - TM-9-4120-388-140200Table 5-2. Pressure-Temperature Relationship of Saturated Refrigerant-22 - TM-9-4120-388-140201Table 5-3. Normal Operating Pressure (In Full Cooling DECREASE Mode.)DESICCANT REFRIGERANT DEHYDRATOR (FILTER DRIER).Installation. - TM-9-4120-388-140204LOW PRESSURE CUT-OUT SWITCH (S7).Removal. - TM-9-4120-388-140206HIGH PRESSURE CUT-OUT SWITCH (S6).Removal. - TM-9-4120-388-140208SERVICE VALVES. - TM-9-4120-388-140209Installation. - TM-9-4120-388-140210SOLENOID VALVES (L1 ad L2) TEST AND COlL REPLACEMENT.Figure 5-15. Solenoid Valve Coil ReplacementSOLENOID VALVES (L1 AND L2) - TM-9-4120-388-140213Installation. - TM-9-4120-388-140214LIQUID QUENCH EXPANSION VALVE.LIQUID QUENCH EXPANSION - Continued.Installation. - TM-9-4120-388-140217 COMPRESSOR (B1).Carefully feel lower part of compressor.Connector replacement - TM-9-4120-388-140220Compressor replacement. - TM-9-4120-388-140221Compressor motor burn out. - TM-9-4120-388-140222Compressor motor burn out (CONT)Compressor installation. - TM-9-4120-388-140224LIQUID SIGHT INDICATOR (SIGHT GLASS). - TM-9-4120-388-140225Installation. - TM-9-4120-388-140226EXPANSION VALVE. - TM-9-4120-388-140227Testing and superheat adjustmentRemoval. - TM-9-4120-388-140229EVAPORATOR COIL. - TM-9-4120-388-140230Repair. - TM-9-4120-388-140231Installation. - TM-9-4120-388-140232PRESSURE REGULATING VALVE. - TM-9-4120-388-140233Removal. - TM-9-4120-388-140234Installation. - TM-9-4120-388-140235RECEIVER. - TM-9-4120-388-140236PRESSURE RELIEF VALVE. - TM-9-4120-388-140237CONDENSER COIL. - TM-9-4120-388-140238Installation. - TM-9-4120-388-140239TUBING AND FITTINGS. - TM-9-4120-388-140240 INSULATION, CASING. FRESH AIR DAMPER.Gasket replacement. - TM-9-4120-388-140243CHAPTER 6 GENERAL SUPPORT MAINTENANCE INSTRUCTIONS - TM-9-4120-388-140244LIFTING HANDLES.WELDING REPAIRS TO THE CASING.APPENDIX A REFERENCES - TM-9-4120-388-140247APPENDIX B MAINTENANCE ALLOCATION CHART - TM-9-4120-388-140248EXPLANATION OF COLUMNS IN THE MAC, SECTION II,EXPLANATION OF COLUMN IN TOOL AND TEST EQUIPMENT REQUIREMENTS, SECTION III.Section Il. MAINTENANCE ALLOCATION CHART FOR AIR CONDITIONERSection Il. MAINTENANCE ALLOCATION CHART FOR AIR CONDITIONER (Con't) - TM-9-4120-388-140252Section Il. MAINTENANCE ALLOCATION CHART FOR AIR CONDITIONER (Con't) - TM-9-4120-388-140253Section IV. REMARKS - TM-9-4120-388-140254APPENDIX C COMPONENTS OF END ITEM AND BASIC ISSUE ITEMS LIST - TM-9-4120-388-140255Section Il. COMPONENTS OF END ITEMSSection III. BASIC ISSUE ITEMS - TM-9-4120-388-140257APPENDIX D ADDITIONAL AUTHORIZATION LIST - TM-9-4120-388-140258APPENDIX E EXPENDABLE SUPPLIES AND MATERIALS LIST - TM-9-4120-388-140259Section II. EXPENDABLE SUPPLIES AND MATERIALS LIST - TM-9-4120-388-140260TM-9-4120-388-14 Air Conditioner Vertical Compact 18 000 BTU/HR 208 Volt 3 Phase 50/60 Hertz NSN 4120-01-21 4-3692 Manual