Figure 1-1. Field Deployable Environmental Control Unit (FDECU).
CHAPTER 1 INTRODUCTION - TM-9-4120-411-140012
WARRANTY INFORMATION
Figure 1-2. Identification Plates (Sheet 1 of 3).
Figure 1-2. Identification Plates (Sheet 2 of 3).
Figure 1-2. Identification Plates (Sheet 3 of 3).
LOCATION AND DESCRIPTION OF MAJOR COMPONENTS - TM-9-4120-411-140017
Figure 1-3. Major Components
EQUIPMENT DATA. - TM-9-4120-411-140019
Section III. PRINCIPLES OF OPERATION - TM-9-4120-411-140020
COOLING AND DEHUMIDIFYING
Figure 1-6. Cooling, Dehumidifying, and Heating System Schematic
CONTROL
Figure 1-7. Control System
CHAPTER 2 OPERATING INSTRUCTIONS - TM-9-4120-411-140025
Figure 2-1. Operator Controls and Indicators.
Section II. OPERATOR PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) - TM-9-4120-411-140027
Table 2-1. Operator Preventive Maintenance Checks and Services for FDECU.
Table 2-1. Operator Preventive Maintenance Checks and Services for FDECU - Continued. - TM-9-4120-411-140029
Table 2-1. Operator Preventive Maintenance Checks and Services for FDECU - Continued. - TM-9-4120-411-140030
Section III. OPERATION UNDER USUAL CONDITIONS - TM-9-4120-411-140031
Vent Mode
Figure 2-2. Operation (Sheet 1 of 2).
DECALS AND INSTRUCTION PLATES
Section IV. OPERATION UNDER UNUSUAL CONDITIONS - TM-9-4120-411-140035
NUCLEAR, BIOLOGICAL, AND CHEMICAL (NBC) DECONTAMINATION PROCEDURES.
CHAPTER 3 OPERATOR MAINTENANCE INSTRUCTIONS - TM-9-4120-411-140037
Table 3-1. Operator Troubleshooting - TM-9-4120-411-140038
Section III. OPERATOR MAINTENANCE PROCEDURES - TM-9-4120-411-140039
CHAPTER 4 UNIT MAINTENANCE INSTRUCTIONS - TM-9-4120-411-140040
Section I. SERVICE UPON RECEIPT - TM-9-4120-411-140041
Figure 4-1. Siting.
RAISING AND LOWERING COVER.
SERVICE UPON RECEIPT OF MATERIEL.
Figure 4-3. Unpacking Components.
Figure 4-4. Shipping Covers and Condensate Drain Hose.
INSTALLATION INSTRUCTIONS - TM-9-4120-411-140047
Figure 4-5. Remote Control Box.
Lower and secure cover per
Figure 4-6. Ducts and Input Power Connection.
INSTALLATION INSTRUCTIONS - TM-9-4120-411-140051
Figure 4-7. NBC Hardening.
Section II. UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES
Table 4-1. Unit Preventive Maintenance Checks and Services for FDECU.
Table 4-1. Unit Preventive Maintenance Checks and Services for FDECU - Continued.
Section III. UNIT TROUBLESHOOTING PROCEDURES
ACCESS FOR TROUBLESHOOTING
PC Board Layout and Component Functions
Figure 4-9. PC Board Layout.
Overall Control Logic.
Table 4-2. LED Condition For Normal Operating Modes.
Table 4-3. LED Condition For Binary Code.
Manual Override of Logic Control
TEMPERATURE POTENTIOMETER SETTINGS
THERMISTOR TEMPERATURE SENSORS TESTING
GENERAL TROUBLESHOOTING PROCEDURES - TM-9-4120-411-140066
GENERAL TROUBLESHOOTING PROCEDURES - TM-9-4120-411-140067
Figure 4-11. Overload Relays.
Table 4-4. Unit Troubleshooting.
SECURE ELECTRICAL ASSEMBLY
Figure 4-12. Frame Cover Assembly.
OUTSIDE FAN REPLACEMENT.
ELECTRICAL SYSTEM GENERAL REPAIR.
Figure 4-14. Wiring Diagram (Sheet 1 of 5).
Figure 4-14. Wiring Diagram (Sheet 2 of 5).
Figure 4-14. Wiring Diagram (Sheet 3 of 5).
Figure 4-14. Wiring Diagram (Sheet 4 of 5).
Figure 4-14. Wiring Diagram (Sheet 5 of 5).
Figure 4-15. Electrical Schematic (Sheet 1 of 15).
Figure 4-15. Electrical Schematic (Sheet 2 of 15).
Figure 4-15. Electrical Schematic (Sheet 3 of 15).
Figure 4-15. Electrical Schematic (Sheet 4 of 15).
Figure 4-15. Electrical Schematic (Sheet 5 of 15).
Figure 4-15. Electrical Schematic (Sheet 6 of 15).
Figure 4-15. Electrical Schematic (Sheet 7 of 15).
Figure 4-15. Electrical Schematic (Sheet 8 of 15).
Figure 4-15. Electrical Schematic (Sheet 9 of 15).
Figure 4-15. Electrical Schematic (Sheet 10 of 15).
Figure 4-15. Electrical Schematic (Sheet 11 of 15).
Figure 4-15. Electrical Schematic (Sheet 12 of 15)
Figure 4-15. Electrical Schematic (Sheet 13 of 15).
Figure 4-15. Electrical Schematic (Sheet 14 of 15).
Figure 4-15. Electrical Schematic (Sheet 15 of 15).
Disconnect wire lead, cable, or harness ends.
ELECTRICAL SYSTEM GENERAL REPAIR
OUTSIDE FAN MOTOR REPLACEMENT.
Figure 4-16. Outside Fan Motor.
HANDLE REPLACEMENT.
LATCH HINGE AND LATCH HINGE DOUBLER REPLACEMENT.
END PANEL REPLACEMENT.
ACCESS PANEL REPLACEMENT. - TM-9-4120-411-140101
REAR SCREEN REPLACEMENT.
END SCREEN REPLACEMENT.
FRONT SCREEN REPLACEMENT.
SUPPLY PANEL REPLACEMENT.
ELECTRICAL ASSEMBLY REPLACEMENT.
ELECTRICAL ASSEMBLY REPLACEMENT - CONTINUED.
Figure 4-25. Electrical Assembly (Sheet 1 of 2).
Figure 4-25. Electrical Assembly (Sheet 2 of 2).
Installation. - TM-9-4120-411-140110
Installation (CONT) - TM-9-4120-411-140111
POWER BOX ASSEMBLY REPLACEMENT.
Removal - TM-9-4120-411-140113
Figure 4-26. Power Box Assembly (Sheet 1 of 2).
Figure 4-26. Power Box Assembly (Sheet 2 of 2).
Installation - TM-9-4120-411-140116
CAPACITORS (C7 THRU C9) REPLACEMENT.
Figure 4-27. Capacitors (C7 thru C9).
CAPACITORS (C1 THRU C6) REPLACEMENT.
Figure 4-28. Capacitors (C1 thru C6).
RELAYS (K1 THRU K5) REPLACEMENT.
Figure 4-29. Relays (K1 thru K5).
OVERLOAD RELAYS (K7 & K8) REPLACEMENT.
Figure 4-30. Overload Relays (K7 & K8).
LARGE OVERLOAD RELAY (K6) REPLACEMENT (FDECU-2 AND FDECU-3 ONLY).
Figure 4-31. Overload Relay (K6) (FDECU-2 and FDECU-3 only).
ELECTRICAL ASSEMBLY MOUNTING BRACKET AND SLIDE REPAIR OR REPLACEMENT.
Figure 4-32. Electrical Assembly Mounting Bracket and Slide.
Assembly - TM-9-4120-411-140129
MAGNETIC PROXIMITY SWITCH (S1) REPLACEMENT.
Figure 4-33. Magnetic Proximity Switch (S1).
TEMPERATURE SENSOR (RT5) REPLACEMENT.
Figure 4-34. Temperature Sensor (RT5).
REMOTE BOX ASSEMBLY REPLACEMENT.
Figure 4-35. Remote Box Assembly.
TEMPERATURE SENSOR (RT1) REPLACEMENT.
Figure 4-36. Temperature Sensor (RT1).
LIGHT EMITTING DIODES (FDECU-2 DS1 THRU DS3) (UNITS AFTER FDECU-2 DS2 AND DS3) REPLACEMENT.
PUSH BUTTON SWITCHES (S1 & S2) REPLACEMENT.
Figure 4-38. Push Button Switches (S1 & S2).
POTENTIOMETER (R1) REPLACEMENT.
Figure 4-39. Potentiometer (R1).
CONTROL BOX ASSEMBLY REPLACEMENT. - TM-9-4120-411-140143
Removal - TM-9-4120-411-140144
Figure 4-40. Control Box Assembly.
Installation - TM-9-4120-411-140146
POTENTIOMETER (R2) REPLACEMENT.
Figure 4-41. Potentiometer (R2).
PUSH BUTTON SWITCHES (S4 & S5) REPLACEMENT.
Figure 4-42. Push Button Switches (S4 & S5).
TOGGLE SWITCH (S7) REPLACEMENT.
Figure 4-43. Toggle Switch (S7).
LIGHT EMITTING DIODES (FDECU-2 DS4 THRU DS6) (UNITS AFTER FDECU-2 DS5 AND DS6) REPLACEMENT.
Figure 4-44. Light Emitting Diodes (FDECU-2 DS4 thru DS6) (Units After FDECU-2 DS5 and DS6).
HEATER ASSEMBLY REPLACEMENT.
Figure 4-45. Heater Assembly.
INSIDE BLOWER REPLACEMENT.
Figure 4-46. Inside Blower Assembly.
INSIDE BLOWER MOTOR REPLACEMENT.
Figure 4-47. Inside Blower Motor.
CRANKCASE HEATERS (HR1 & HR8) REPLACEMENT (FDECU-2 ONLY).
Figure 4-48. Crankcase Heaters (HR1 & HR8) (FDECU-2 ONLY).
CRANKCASE TEMPERATURE SENSOR (RT4) REPLACEMENT (FDECU-2 ONLY).
Figure 4-49. Crankcase Temperature Sensor (RT4) (FDECU-2 ONLY).
OUTSIDE COIL TEMPERATURE SENSOR (RT3) REPLACEMENT.
COVER RETAINING ROD REPLACEMENT.
END RAIL REPLACEMENT.
Figure 4-52. End Rail.
REAR RAIL REPLACEMENT.
FRONT RAIL REPLACEMENT.
Figure 4-54. Front Rail.
Section V. PREPARATION FOR STORAGE OR SHIPMENT - TM-9-4120-411-140172
Figure 4-55. NBC Hardened.
DISCONNECT INPUT POWER AND DUCTS
Figure 4-56. Ducts and Input Power Connection.
SECURE REMOTE CONTROL BOX IF USED
SECURE CONDENSATE DRAIN HOSE AND INSTALL SHIPPING COVERS
Figure 4-58. Shipping Covers and Condensate Drain Hose.
PACK COMPONENTS INSIDE FDECU.
CHAPTER 5 DIRECT SUPPORT MAINTENANCE INSTRUCTIONS - TM-9-4120-411-140180
Figure 5-1. Circuit Board.
REFRIGERATION SYSTEM REPAIRS. - TM-9-4120-411-140182
SERVICE MANIFOLD INSTALLATION. - TM-9-4120-411-140183
Figure 5-2. Service Manifold Installation
REMOVAL AND RECOVERY OF THE SYSTEM REFRIGERANT.
Figure 5-3. Removal And Recovery Of Refrigerant
PURGING THE REFRIGERANT SYSTEM. - TM-9-4120-411-140187
Figure 5-4. Nitrogen Tank Connection
BRAZING/DEBRAZE PROCEDURE. - TM-9-4120-411-140189
Braze. - TM-9-4120-411-140190
REFILLING COMPRESSOR LUBRICATING OIL.
Filling.
LEAK TESTING THE REFRIGERANT SYSTEM. - TM-9-4120-411-140193
EVACUATING THE REFRIGERANT SYSTEM. - TM-9-4120-411-140194
Figure 5-5. Evacuation of Refrigerant System
CHARGING THE REFRIGERANT SYSTEM. - TM-9-4120-411-140196
Full Charge - TM-9-4120-411-140197
Figure 5-6. Refrigerant Charging (Total System)
Partial Charge - TM-9-4120-411-140199
Figure 5-7. Refrigerant Charging (Partial System /Small Quantity Charge)
Partial Charge (CONT) - TM-9-4120-411-140201
REFRIGERANT SYSTEM PRESSURE CHECK. - TM-9-4120-411-140202
Table 5-1. Pressure Temperature Relationship of Saturated Refrigerant R-134a - Continued. - TM-9-4120-411-140203
Table 5-1. Pressure Temperature Relationship of Saturated Refrigerant R-134a - Continued. - TM-9-4120-411-140204
TUBING AND FITTINGS TESTING, REPAIR AND REPLACEMENT.
Figure 5-8. Tubing And Fittings
AIR HANDLING ASSEMBLY REPLACEMENT.
Figure 5-9. Air Handling Assembly
Installation - TM-9-4120-411-140209
Installation (CONT) - TM-9-4120-411-140210
VOLUTE ASSEMBLY REPLACEMENT.
Figure 5-10. Expansion Valve
Installation - TM-9-4120-411-140213
LIQUID INDICATOR REPLACEMENT.
FILTER-DRIER REPLACEMENT.
Figure 5-12. Filter-Drier
COMPRESSOR AND REVERSING VALVE ASSEMBLY REPLACEMENT.
Figure 5-13. Compressor and Reversing Valve Assembly (Sheet 1 of 2).
Figure 5-13. Compressor and Reversing Valve Assembly (Sheet 2 of 2).
Installation - TM-9-4120-411-140220
Installation (CONT) - TM-9-4120-411-140221
HIGH OR LOW PRESSURE CUTOUT SWITCH (S2 OR S3) REPLACEMENT
Installation - TM-9-4120-411-140223
Figure 5-14. High or Low Pressure Cutout Switch (S2 or S3).
REVERSING VALVE REPLACEMENT.
Figure 5-15. Reversing Valve
COMPRESSOR REPLACEMENT. - TM-9-4120-411-140227
OUTSIDE COIL REPLACEMENT.
Figure 5-17. Outside Coil (Sheet 1 of 2).
Figure 5-17. Outside Coil (Sheet 2 of 2).
Installation - TM-9-4120-411-140231
Installation (CONT) - TM-9-4120-411-140232
CHAPTER 6 GENERAL SUPPORT MAINTENANCE INSTRUCTIONS - TM-9-4120-411-140233
APPENDIX A REFERENCES - TM-9-4120-411-140234
APPENDIX A REFERENCES (CONT)
APPENDIX B MAINTENANCE ALLOCATION CHART - TM-9-4120-411-140236
GENERAL -
Section II. MAINTENANCE ALLOCATION CHART FOR FIELD DEPLOYABLE ENVIRONMENTAL CONTROL UNIT, 66,000 BTU/HR
Section II. MAINTENANCE ALLOCATION CHART FOR FIELD DEPLOYABLE ENVIRONMENTAL CONTROL UNIT, 66,000 BTU/HR (CONT) - TM-9-4120-411-140239
Section II. MAINTENANCE ALLOCATION CHART FOR FIELD DEPLOYABLE ENVIRONMENTAL CONTROL UNIT, 66,000 BTU/HR (CONT) - TM-9-4120-411-140240
Section III. TOOL AND TEST EQUIPMENT FOR FIELD DEPLOYABLE ENVIRONMENTAL CONTROL UNIT, 66,000 BTU/HR
Section IV. REMARKS FOR FIELD DEPLOYABLE ENVIRONMENTAL CONTROL UNIT, 66,000 BTU/HR
APPENDIX C COMPONENTS OF END ITEM AND BASIC ISSUE ITEMS LISTS - TM-9-4120-411-140243
Section II. COMPONENTS OF END ITEM - TM-9-4120-411-140244
Section III. BASIC ISSUE ITEMS - TM-9-4120-411-140245
APPENDIX D ADDITIONAL AUTHORIZATION LIST - TM-9-4120-411-140246
APPENDIX E EXPENDABLE AND DURABLE ITEMS LIST - TM-9-4120-411-140247
Section II. EXPENDABLE AND DURABLE ITEMS LIST - TM-9-4120-411-140248
APPENDIX F ILLUSTRATED LIST OF MANUFACTURED ITEMS - TM-9-4120-411-140249
Section III. MANUFACTURED ITEMS ILLUSTRATIONS - TM-9-4120-411-140250
Figure F-2. Insulation Sleeving.
Figure F-3. Cable.
Figure F-5. Vinyl Foam, Part Number 9454108 ITEM 27.
Figure F-6. Vinyl Foam, Part Number 9454108 ITEM 26.
Figure F-7. Hose, Part Number 9454078 ITEM 18.
Figure F-8. Tube, Part Number 9454135-8-17.50.
Figure F-9. Tube, Part Number 9454135-8-41.38.
Figure F-10. Tube, Part Number 9454135-11-13.43.
Figure F-11. Tube, Part Number 9454135-8-21.02.
Figure F-12. Tube, Part Number 9454135-8-18.76.
Figure F-13. Tube, Part Number 9454135-11-35.15.
Figure F-15. Tube, Part Number 9454135-9-5.05.
Figure F-16. Tube, Part Number 9454135-9-7.11.
Figure F-17. Tube, Part Number 9454317 ITEM 12.
Figure F-18. Control Box Wiring List 2, Part Number 9454130.
Figure F-19. Electrical Assembly Wiring List 1, Part Number 9454109 (Sheet 1 of 3).
Figure F- 19. Electrical Assembly Wiring List 1, Part Number 9454109 (Sheet 2 of 3).
Figure F- 19. Electrical Assembly Wiring List 1, Part Number 9454109 (Sheet 3 of 3).
APPENDIX G MANDATORY REPLACEMENT PARTS - TM-9-4120-411-140269
APPENDIX H LUBRICATION APPENDIX
APPENDIX I TORQUE LIMITS
TM-9-4120-411-14 Field Deployable Environmental Control Unit Models FDECU-2 FDECU-3 and FDECU-4 (NSN 4120-01-449-0459) Manual
CHAPTER 1 INTRODUCTION - TM-9-4120-411-140012
WARRANTY INFORMATION
Figure 1-2. Identification Plates (Sheet 1 of 3).
Figure 1-2. Identification Plates (Sheet 2 of 3).
Figure 1-2. Identification Plates (Sheet 3 of 3).
LOCATION AND DESCRIPTION OF MAJOR COMPONENTS - TM-9-4120-411-140017
Figure 1-3. Major Components
EQUIPMENT DATA. - TM-9-4120-411-140019
Section III. PRINCIPLES OF OPERATION - TM-9-4120-411-140020
COOLING AND DEHUMIDIFYING
Figure 1-6. Cooling, Dehumidifying, and Heating System Schematic
CONTROL
Figure 1-7. Control System
CHAPTER 2 OPERATING INSTRUCTIONS - TM-9-4120-411-140025
Figure 2-1. Operator Controls and Indicators.
Section II. OPERATOR PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) - TM-9-4120-411-140027
Table 2-1. Operator Preventive Maintenance Checks and Services for FDECU.
Table 2-1. Operator Preventive Maintenance Checks and Services for FDECU - Continued. - TM-9-4120-411-140029
Table 2-1. Operator Preventive Maintenance Checks and Services for FDECU - Continued. - TM-9-4120-411-140030
Section III. OPERATION UNDER USUAL CONDITIONS - TM-9-4120-411-140031
Vent Mode
Figure 2-2. Operation (Sheet 1 of 2).
DECALS AND INSTRUCTION PLATES
Section IV. OPERATION UNDER UNUSUAL CONDITIONS - TM-9-4120-411-140035
NUCLEAR, BIOLOGICAL, AND CHEMICAL (NBC) DECONTAMINATION PROCEDURES.
CHAPTER 3 OPERATOR MAINTENANCE INSTRUCTIONS - TM-9-4120-411-140037
Table 3-1. Operator Troubleshooting - TM-9-4120-411-140038
Section III. OPERATOR MAINTENANCE PROCEDURES - TM-9-4120-411-140039
CHAPTER 4 UNIT MAINTENANCE INSTRUCTIONS - TM-9-4120-411-140040
Section I. SERVICE UPON RECEIPT - TM-9-4120-411-140041
Figure 4-1. Siting.
RAISING AND LOWERING COVER.
SERVICE UPON RECEIPT OF MATERIEL.
Figure 4-3. Unpacking Components.
Figure 4-4. Shipping Covers and Condensate Drain Hose.
INSTALLATION INSTRUCTIONS - TM-9-4120-411-140047
Figure 4-5. Remote Control Box.
Lower and secure cover per
Figure 4-6. Ducts and Input Power Connection.
INSTALLATION INSTRUCTIONS - TM-9-4120-411-140051
Figure 4-7. NBC Hardening.
Section II. UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES
Table 4-1. Unit Preventive Maintenance Checks and Services for FDECU.
Table 4-1. Unit Preventive Maintenance Checks and Services for FDECU - Continued.
Section III. UNIT TROUBLESHOOTING PROCEDURES
ACCESS FOR TROUBLESHOOTING
PC Board Layout and Component Functions
Figure 4-9. PC Board Layout.
Overall Control Logic.
Table 4-2. LED Condition For Normal Operating Modes.
Table 4-3. LED Condition For Binary Code.
Manual Override of Logic Control
TEMPERATURE POTENTIOMETER SETTINGS
THERMISTOR TEMPERATURE SENSORS TESTING
GENERAL TROUBLESHOOTING PROCEDURES - TM-9-4120-411-140066
GENERAL TROUBLESHOOTING PROCEDURES - TM-9-4120-411-140067
Figure 4-11. Overload Relays.
Table 4-4. Unit Troubleshooting.
SECURE ELECTRICAL ASSEMBLY
Figure 4-12. Frame Cover Assembly.
OUTSIDE FAN REPLACEMENT.
ELECTRICAL SYSTEM GENERAL REPAIR.
Figure 4-14. Wiring Diagram (Sheet 1 of 5).
Figure 4-14. Wiring Diagram (Sheet 2 of 5).
Figure 4-14. Wiring Diagram (Sheet 3 of 5).
Figure 4-14. Wiring Diagram (Sheet 4 of 5).
Figure 4-14. Wiring Diagram (Sheet 5 of 5).
Figure 4-15. Electrical Schematic (Sheet 1 of 15).
Figure 4-15. Electrical Schematic (Sheet 2 of 15).
Figure 4-15. Electrical Schematic (Sheet 3 of 15).
Figure 4-15. Electrical Schematic (Sheet 4 of 15).
Figure 4-15. Electrical Schematic (Sheet 5 of 15).
Figure 4-15. Electrical Schematic (Sheet 6 of 15).
Figure 4-15. Electrical Schematic (Sheet 7 of 15).
Figure 4-15. Electrical Schematic (Sheet 8 of 15).
Figure 4-15. Electrical Schematic (Sheet 9 of 15).
Figure 4-15. Electrical Schematic (Sheet 10 of 15).
Figure 4-15. Electrical Schematic (Sheet 11 of 15).
Figure 4-15. Electrical Schematic (Sheet 12 of 15)
Figure 4-15. Electrical Schematic (Sheet 13 of 15).
Figure 4-15. Electrical Schematic (Sheet 14 of 15).
Figure 4-15. Electrical Schematic (Sheet 15 of 15).
Disconnect wire lead, cable, or harness ends.
ELECTRICAL SYSTEM GENERAL REPAIR
OUTSIDE FAN MOTOR REPLACEMENT.
Figure 4-16. Outside Fan Motor.
HANDLE REPLACEMENT.
LATCH HINGE AND LATCH HINGE DOUBLER REPLACEMENT.
END PANEL REPLACEMENT.
ACCESS PANEL REPLACEMENT. - TM-9-4120-411-140101
REAR SCREEN REPLACEMENT.
END SCREEN REPLACEMENT.
FRONT SCREEN REPLACEMENT.
SUPPLY PANEL REPLACEMENT.
ELECTRICAL ASSEMBLY REPLACEMENT.
ELECTRICAL ASSEMBLY REPLACEMENT - CONTINUED.
Figure 4-25. Electrical Assembly (Sheet 1 of 2).
Figure 4-25. Electrical Assembly (Sheet 2 of 2).
Installation. - TM-9-4120-411-140110
Installation (CONT) - TM-9-4120-411-140111
POWER BOX ASSEMBLY REPLACEMENT.
Removal - TM-9-4120-411-140113
Figure 4-26. Power Box Assembly (Sheet 1 of 2).
Figure 4-26. Power Box Assembly (Sheet 2 of 2).
Installation - TM-9-4120-411-140116
CAPACITORS (C7 THRU C9) REPLACEMENT.
Figure 4-27. Capacitors (C7 thru C9).
CAPACITORS (C1 THRU C6) REPLACEMENT.
Figure 4-28. Capacitors (C1 thru C6).
RELAYS (K1 THRU K5) REPLACEMENT.
Figure 4-29. Relays (K1 thru K5).
OVERLOAD RELAYS (K7 & K8) REPLACEMENT.
Figure 4-30. Overload Relays (K7 & K8).
LARGE OVERLOAD RELAY (K6) REPLACEMENT (FDECU-2 AND FDECU-3 ONLY).
Figure 4-31. Overload Relay (K6) (FDECU-2 and FDECU-3 only).
ELECTRICAL ASSEMBLY MOUNTING BRACKET AND SLIDE REPAIR OR REPLACEMENT.
Figure 4-32. Electrical Assembly Mounting Bracket and Slide.
Assembly - TM-9-4120-411-140129
MAGNETIC PROXIMITY SWITCH (S1) REPLACEMENT.
Figure 4-33. Magnetic Proximity Switch (S1).
TEMPERATURE SENSOR (RT5) REPLACEMENT.
Figure 4-34. Temperature Sensor (RT5).
REMOTE BOX ASSEMBLY REPLACEMENT.
Figure 4-35. Remote Box Assembly.
TEMPERATURE SENSOR (RT1) REPLACEMENT.
Figure 4-36. Temperature Sensor (RT1).
LIGHT EMITTING DIODES (FDECU-2 DS1 THRU DS3) (UNITS AFTER FDECU-2 DS2 AND DS3) REPLACEMENT.
PUSH BUTTON SWITCHES (S1 & S2) REPLACEMENT.
Figure 4-38. Push Button Switches (S1 & S2).
POTENTIOMETER (R1) REPLACEMENT.
Figure 4-39. Potentiometer (R1).
CONTROL BOX ASSEMBLY REPLACEMENT. - TM-9-4120-411-140143
Removal - TM-9-4120-411-140144
Figure 4-40. Control Box Assembly.
Installation - TM-9-4120-411-140146
POTENTIOMETER (R2) REPLACEMENT.
Figure 4-41. Potentiometer (R2).
PUSH BUTTON SWITCHES (S4 & S5) REPLACEMENT.
Figure 4-42. Push Button Switches (S4 & S5).
TOGGLE SWITCH (S7) REPLACEMENT.
Figure 4-43. Toggle Switch (S7).
LIGHT EMITTING DIODES (FDECU-2 DS4 THRU DS6) (UNITS AFTER FDECU-2 DS5 AND DS6) REPLACEMENT.
Figure 4-44. Light Emitting Diodes (FDECU-2 DS4 thru DS6) (Units After FDECU-2 DS5 and DS6).
HEATER ASSEMBLY REPLACEMENT.
Figure 4-45. Heater Assembly.
INSIDE BLOWER REPLACEMENT.
Figure 4-46. Inside Blower Assembly.
INSIDE BLOWER MOTOR REPLACEMENT.
Figure 4-47. Inside Blower Motor.
CRANKCASE HEATERS (HR1 & HR8) REPLACEMENT (FDECU-2 ONLY).
Figure 4-48. Crankcase Heaters (HR1 & HR8) (FDECU-2 ONLY).
CRANKCASE TEMPERATURE SENSOR (RT4) REPLACEMENT (FDECU-2 ONLY).
Figure 4-49. Crankcase Temperature Sensor (RT4) (FDECU-2 ONLY).
OUTSIDE COIL TEMPERATURE SENSOR (RT3) REPLACEMENT.
COVER RETAINING ROD REPLACEMENT.
END RAIL REPLACEMENT.
Figure 4-52. End Rail.
REAR RAIL REPLACEMENT.
FRONT RAIL REPLACEMENT.
Figure 4-54. Front Rail.
Section V. PREPARATION FOR STORAGE OR SHIPMENT - TM-9-4120-411-140172
Figure 4-55. NBC Hardened.
DISCONNECT INPUT POWER AND DUCTS
Figure 4-56. Ducts and Input Power Connection.
SECURE REMOTE CONTROL BOX IF USED
SECURE CONDENSATE DRAIN HOSE AND INSTALL SHIPPING COVERS
Figure 4-58. Shipping Covers and Condensate Drain Hose.
PACK COMPONENTS INSIDE FDECU.
CHAPTER 5 DIRECT SUPPORT MAINTENANCE INSTRUCTIONS - TM-9-4120-411-140180
Figure 5-1. Circuit Board.
REFRIGERATION SYSTEM REPAIRS. - TM-9-4120-411-140182
SERVICE MANIFOLD INSTALLATION. - TM-9-4120-411-140183
Figure 5-2. Service Manifold Installation
REMOVAL AND RECOVERY OF THE SYSTEM REFRIGERANT.
Figure 5-3. Removal And Recovery Of Refrigerant
PURGING THE REFRIGERANT SYSTEM. - TM-9-4120-411-140187
Figure 5-4. Nitrogen Tank Connection
BRAZING/DEBRAZE PROCEDURE. - TM-9-4120-411-140189
Braze. - TM-9-4120-411-140190
REFILLING COMPRESSOR LUBRICATING OIL.
Filling.
LEAK TESTING THE REFRIGERANT SYSTEM. - TM-9-4120-411-140193
EVACUATING THE REFRIGERANT SYSTEM. - TM-9-4120-411-140194
Figure 5-5. Evacuation of Refrigerant System
CHARGING THE REFRIGERANT SYSTEM. - TM-9-4120-411-140196
Full Charge - TM-9-4120-411-140197
Figure 5-6. Refrigerant Charging (Total System)
Partial Charge - TM-9-4120-411-140199
Figure 5-7. Refrigerant Charging (Partial System /Small Quantity Charge)
Partial Charge (CONT) - TM-9-4120-411-140201
REFRIGERANT SYSTEM PRESSURE CHECK. - TM-9-4120-411-140202
Table 5-1. Pressure Temperature Relationship of Saturated Refrigerant R-134a - Continued. - TM-9-4120-411-140203
Table 5-1. Pressure Temperature Relationship of Saturated Refrigerant R-134a - Continued. - TM-9-4120-411-140204
TUBING AND FITTINGS TESTING, REPAIR AND REPLACEMENT.
Figure 5-8. Tubing And Fittings
AIR HANDLING ASSEMBLY REPLACEMENT.
Figure 5-9. Air Handling Assembly
Installation - TM-9-4120-411-140209
Installation (CONT) - TM-9-4120-411-140210
VOLUTE ASSEMBLY REPLACEMENT.
Figure 5-10. Expansion Valve
Installation - TM-9-4120-411-140213
LIQUID INDICATOR REPLACEMENT.
FILTER-DRIER REPLACEMENT.
Figure 5-12. Filter-Drier
COMPRESSOR AND REVERSING VALVE ASSEMBLY REPLACEMENT.
Figure 5-13. Compressor and Reversing Valve Assembly (Sheet 1 of 2).
Figure 5-13. Compressor and Reversing Valve Assembly (Sheet 2 of 2).
Installation - TM-9-4120-411-140220
Installation (CONT) - TM-9-4120-411-140221
HIGH OR LOW PRESSURE CUTOUT SWITCH (S2 OR S3) REPLACEMENT
Installation - TM-9-4120-411-140223
Figure 5-14. High or Low Pressure Cutout Switch (S2 or S3).
REVERSING VALVE REPLACEMENT.
Figure 5-15. Reversing Valve
COMPRESSOR REPLACEMENT. - TM-9-4120-411-140227
OUTSIDE COIL REPLACEMENT.
Figure 5-17. Outside Coil (Sheet 1 of 2).
Figure 5-17. Outside Coil (Sheet 2 of 2).
Installation - TM-9-4120-411-140231
Installation (CONT) - TM-9-4120-411-140232
CHAPTER 6 GENERAL SUPPORT MAINTENANCE INSTRUCTIONS - TM-9-4120-411-140233
APPENDIX A REFERENCES - TM-9-4120-411-140234
APPENDIX A REFERENCES (CONT)
APPENDIX B MAINTENANCE ALLOCATION CHART - TM-9-4120-411-140236
GENERAL -
Section II. MAINTENANCE ALLOCATION CHART FOR FIELD DEPLOYABLE ENVIRONMENTAL CONTROL UNIT, 66,000 BTU/HR
Section II. MAINTENANCE ALLOCATION CHART FOR FIELD DEPLOYABLE ENVIRONMENTAL CONTROL UNIT, 66,000 BTU/HR (CONT) - TM-9-4120-411-140239
Section II. MAINTENANCE ALLOCATION CHART FOR FIELD DEPLOYABLE ENVIRONMENTAL CONTROL UNIT, 66,000 BTU/HR (CONT) - TM-9-4120-411-140240
Section III. TOOL AND TEST EQUIPMENT FOR FIELD DEPLOYABLE ENVIRONMENTAL CONTROL UNIT, 66,000 BTU/HR
Section IV. REMARKS FOR FIELD DEPLOYABLE ENVIRONMENTAL CONTROL UNIT, 66,000 BTU/HR
APPENDIX C COMPONENTS OF END ITEM AND BASIC ISSUE ITEMS LISTS - TM-9-4120-411-140243
Section II. COMPONENTS OF END ITEM - TM-9-4120-411-140244
Section III. BASIC ISSUE ITEMS - TM-9-4120-411-140245
APPENDIX D ADDITIONAL AUTHORIZATION LIST - TM-9-4120-411-140246
APPENDIX E EXPENDABLE AND DURABLE ITEMS LIST - TM-9-4120-411-140247
Section II. EXPENDABLE AND DURABLE ITEMS LIST - TM-9-4120-411-140248
APPENDIX F ILLUSTRATED LIST OF MANUFACTURED ITEMS - TM-9-4120-411-140249
Section III. MANUFACTURED ITEMS ILLUSTRATIONS - TM-9-4120-411-140250
Figure F-2. Insulation Sleeving.
Figure F-3. Cable.
Figure F-5. Vinyl Foam, Part Number 9454108 ITEM 27.
Figure F-6. Vinyl Foam, Part Number 9454108 ITEM 26.
Figure F-7. Hose, Part Number 9454078 ITEM 18.
Figure F-8. Tube, Part Number 9454135-8-17.50.
Figure F-9. Tube, Part Number 9454135-8-41.38.
Figure F-10. Tube, Part Number 9454135-11-13.43.
Figure F-11. Tube, Part Number 9454135-8-21.02.
Figure F-12. Tube, Part Number 9454135-8-18.76.
Figure F-13. Tube, Part Number 9454135-11-35.15.
Figure F-15. Tube, Part Number 9454135-9-5.05.
Figure F-16. Tube, Part Number 9454135-9-7.11.
Figure F-17. Tube, Part Number 9454317 ITEM 12.
Figure F-18. Control Box Wiring List 2, Part Number 9454130.
Figure F-19. Electrical Assembly Wiring List 1, Part Number 9454109 (Sheet 1 of 3).
Figure F- 19. Electrical Assembly Wiring List 1, Part Number 9454109 (Sheet 2 of 3).
Figure F- 19. Electrical Assembly Wiring List 1, Part Number 9454109 (Sheet 3 of 3).
APPENDIX G MANDATORY REPLACEMENT PARTS - TM-9-4120-411-140269
APPENDIX H LUBRICATION APPENDIX
APPENDIX I TORQUE LIMITS
TM-9-4120-411-14 Field Deployable Environmental Control Unit Models FDECU-2 FDECU-3 and FDECU-4 (NSN 4120-01-449-0459) Manual
