Carrier TRANSICOLD 69NT20-274 Operation And Service
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Carrier TRANSICOLD 69NT20-274 Operation And Service

Carrier TRANSICOLD 69NT20-274 Operation And Service

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69NT20-274
69NT40-441
69NT40-444
69NT40-454
T-246-10
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Summary of Contents for Carrier TRANSICOLD 69NT20-274

  • Page 1 Models 69NT20-274 69NT40-441 69NT40-444 69NT40-454 T-246-10 Downloaded from ManualsNet.com search engine...
  • Page 2 Downloaded from ManualsNet.com search engine...
  • Page 3 OPERATION AND SERVICE MANUAL CONTAINER REFRIGERATION UNIT MODELS 69NT20-274 69NT40-441 69NT40-444 69NT40-454 Carrier Transicold Division, Carrier Corporation, P .O. Box 4805, Syracuse, N.Y. 13221 ã Carrier Corporation 1993 D Printed in U. S. A. 0593 Downloaded from ManualsNet.com search engine...
  • Page 4 Downloaded from ManualsNet.com search engine...

  • Page 5: Table Of Contents

    TABLE OF CONTENTS Section Page DESCRIPTION ............Introduction .
  • Page 6 TABLE OF CONTENTS (CONTINUED) Section Page SERVICE ............. Removing the Refrigerant .
  • Page 7 LIST OF ILLUSTRATIONS Figure Page Refrigeration Unit --- Front ..........Refrigeration Unit --- Rear (Panels Removed) .
  • Page 8 LIST OF ILLUSTRATIONS (CONTINUED) Figure Page 5-15. Electrical Wiring Schematic (Model 69NT40-444-6) ......5-30 5-16. Electrical Wiring Diagram (Model 69NT40-444-6) .

  • Page 9: Description

    Some units are equipped with a Carrier Transicold cooling and heating refrigeration unit. The unit is DataCORDER (Microprocessor recorder). Detailed designed to fit in the front of a container and to serve as information on the DataCORDER will be found in the container front wall.
  • Page 10 Table 1-1. Model Chart REFRIGER- UNIT WEIGHT MODELS 69NT20-274 1200 69NT20-274-1 1325 69NT40-444 1235 69NT40-444-1 1215 69NT40-444-2 1235 69NT40-444-3 1360 12.0 69NT40-444-4 1230 12.0 69NT40-444-6 1200 12.0 69NT40-454 1195 12.0 UNITS THAT HAVE PROVISIONS TO CONVERT TO R-22 69NT20-274-2 1175 69NT20-274-3 1175 69NT40-441-21...
  • Page 11 Access Panel (Evap. Fan Motor #2) Discharge Service Valve Access Panel (Heater Location) Compressor Sight Glass TIR Locking Devices High Pressure Switch (HPS) Recording Thermometer (Optional) Compressor Motor (CP) Make-Up Air Cover Pressure Gauges (Optional) Condenser Fan Motor (CM) Control Box Interrogator Connector Fork Lift Pockets Power Cables and Plug...
  • Page 12 Evaporator Fan Motor #1 (EM1) Heater Termination Thermostat (HTT) Humidistat (HCS) (Optional) Evaporator Coil Heaters Return Air Temperature Sensor (RTS) Drain Pan Heater (DPH) Chart Recording Thermometer Bulb Dummy Receptacle Return Recorder Sensor (RRS) USDA Probe Receptacle (PR3) Defrost Termination Thermostat (DTT) USDA Probe Receptacle (PR1) Evaporator Fan Motor #2 (EM2) Interrogator Receptacle...

  • Page 13: Water-Cooled Condenser/Receiver Section

    11,12,20 UNITS WITH WATER-COOLED CONDENSER SIDE VIEW 18,19 UNITS WITH RECEIVER UNITS WITH PROVISIONS FOR R-22 Compressor Discharge Sensor (CPDS If Used) Supply Recorder Sensor (SRS) (Optional) High Pressure Switch (HPS) Suction Service Valve Compressor Suction Sensor (CPSS) Filter-Drier Solenoid Modulating Valve (SMV) Pressure Relief Valve Suction Solenoid Valve (SSV) --- 69NT40 Liquid Line and Charging Valve...
  • Page 14 UNITS WITH TWO-SPEED EVAPORATOR MOTOR Cool Heat Defrost In range Alarm SETPOINT/Code AIR TEMP/Data DataCORDER 13,14 UNITS WITH ONE-SPEED EVAPORATOR MOTOR 12. Control Transformer (TR) 1. Compressor Contactor (C) 2. Condenser Fan Motor Relay (CF) 13. Control Fuse (F) (6 amp) 3.

  • Page 15: General Description

    Some units are equipped with two-speed evaporator 1.2 GENERAL DESCRIPTION fan motors. Refer to Table 1-1. When transporting a. Compressor Section perishable commodities, the fan motors will be in high NOTE speed (above ---10_C = +14_F). Check the compressor Serial/Model Number The evaporator coil heaters are accessible by plate for CFM displacement, refer to Table 1-2.

  • Page 16: Electrical Data

    Rotation k. Pressure Relief Valves Evap. Fan Motor #1 (See Figure 1-2): Low Side: CW when viewed from shaft end Opens: 18.63 kg/cm@ (265 psig) CCW when viewed from end opposite shaft end High Side for R-12: Evap. Fan Motor #2 (See Figure 1-2): Opens: 24 kg/cm@ (340 psig) CCW when viewed from shaft end CW when viewed from end opposite shaft end...

  • Page 17: Fresh Air Makeup Vent

    Loosen the hex nut and adjust each disk to the 1.6 FRESH AIR MAKEUP VENT required air flow and tighten hex nut. The purpose of the vent is to provide ventilation for commodities that require fresh air circulation and must NOTE be closed when transporting frozen foods.

  • Page 18: Safety And Protective Devices

    Table 1-3. Safety and Protective Devices UNSAFE CONDITIONS SAFETY DEVICES DEVICE SETTING 1. Excessive current draw 1. Circuit Breaker (CB-1) --- 1. Trips at 24 amps Manual Reset (460 vac 69NT20) 1. Trips at 29 amps (460 vac 69NT40) 1. Circuit Breaker (CB-2) --- 1.

  • Page 19: Water-Cooled Condenser (Optional)

    denser fan motor will stop and will remain stopped until the water pressure switch closes. refrigeration unit operating with water-cooled condenser will perform as outlined in section 2.4 except that the condenser fan motor is stopped in all modes. To shift to air-cooled condenser operation, do the following: Disconnect the water supply and the discharge line to the water-cooled condenser.

  • Page 20: Remote Monitoring Receptacle

    Adhesive-backed labels depicting allowable frost b. Suction Solenoid Override patterns on compressors are available from Carrier This function restricts the opening of the suction Transicold Replacement Component Group. solenoid valve (SSV) under certain ambient and box temperature conditions.

  • Page 21: Computer Control

    Signal malfunction alarm light and/or digital display The Carrier Transicold Computer Control --- identification of the following: Electronics Center (CC-EC) is a custom-designed Internal or Fuse Protection of Control Circuit,...

  • Page 22: General Layout Of Control Center

    This data is recorded for a minimum of 1500 hours of unit operation (the equivalent of 62 days continuous Function running operation or approximately 120 calendar days of average container utilization) and can be printed out for Arrow Up Change set point upward. each hour interval.

  • Page 23: Suction Solenoid Valves

    After this time and at 0.2_C (0.4_F) or greater below set point, the compressor will be turned OFF. DataCORDER Key Display (Optional) The heaters will be energized if the temperature drops to 0.5_C (0.9_F) below set point. The heaters will Hours Since Last Hours since last trip start.
  • Page 24 de-energized to allow the system to recover. The Table 1-4. Function Code Assignments out-of-range timer starts as soon as the temperature exceeds the in-range tolerance value set by code Cd29. FUNCTION CODE DATA Cooling capacity reduction by modulation is the same as described for the conventional operating mode Display Only Functions when any of the above 4 conditions are invalid.
  • Page 25 to 1.3 Amps. The valve remains 100% open below 0.2 A Code 10 --- Compressor Suction Temperature and is 0% open at 1.3 A. Measured just prior to the compressor suction Code 02 --- Quench Valve (Open or Closed) service valve, the compressor suction temperature is used for pre-trip diagnostics as an indicator of proper quench NOTE operation.
  • Page 26 closes, or at power-up if DTT is already closed, the time Code 23 --- Secondary Return Air Temperature (not applicable for some units) interval to the first defrost cycle is entered into the microprocessor. secondary return air temperature (for four-probe systems) is measured at the same place as the When the interval timer has counted down 2.5 hr, the primary return air temperature.
  • Page 27 The controller must be in the “Normal Display Mode.” Code 31 --- Current Limit (ie., Set point and control Probe Display) and all alarms The current limit is the maximum current demand must be inactive to clear the alarm light and queue. allowed on any phase at any time.
  • Page 28 Alarm 53 --- Main Voltage Sensor Failure Alarm 24 --- Condenser Fan Motor Alarm 53 is caused by a line voltage reading of less Alarm 24 is triggered by the opening of the than 30V. It is a display alarm with no associated failure condenser motor internal protector and will disable all action.
  • Page 29 Alarm 61 --- Defrost Termination Thermostat Open Failure This message will be alternately displayed with the Alarm 61 is an indication of a DTT stuck open set point whenever the main voltage drops more than failure. It is activated if DTT is not sensed closed 30 20% of its proper voltage.

  • Page 30: Datacorder (Optional)

    P6-2 above. run for 8 minutes to eliminate air temperature 1.13.7 DataCORDER (Optional) differences. Carrier Transicold has developed a microprocessor recorder for container refrigeration units which P5-1 Primary/Secondary Probe Test eliminates the mechanical recorder and paper chart, and (For unit with DataCORDER only) After 8 minutes,...

  • Page 31: Communications

    Contact the Carrier with a desktop PC for downloading, data storage and service representative for details. output processing. These functions can be performed on The DataCORDER records four probe temperature the portable computer using floppy disks.

  • Page 32: Setting Function Codes Without Ac Power (Optional)

    This installation program is easily loaded into the PC 1.13.9 Setting Function Codes Without AC Power (Optional) and is menu driven so that the portable computer can be programmed to provide the desired customer report For units equipped with software Revision 106 or format headings and revised easily by the customer.

  • Page 33: Usda Cold Treatment Procedure

    In response to the demand to replace fumigation Plug power cable into module and start unit or apply with this enviromentally sound process, Carrier has 24 vac to module. If low battery charge light illuminates, integrated this Cold Treatment capability into its charge battery by operating unit or applying 24 vac to microprocessor controller.

  • Page 34: Nitrogen Feed (Optional)

    For testing purposes: data from the DataCORDER memory. Contact a WARNING Carrier service representative for details. Beware of rotating evaporator fan when 1.16 NITROGEN FEED (Optional) conducting following test. The purpose of the option is to provide a way to inject 1.

  • Page 35: Controller Set Point Below

    FALLING RISING TEMPERATURE TEMPERATURE +1.5 C (2.7 C (1.8 COOLING COOLING +0.5 C (0.9 +.20 SET POINT ---.20 ---0.5 C (0.9 ---1 C (1.8 CIRCULATION CIRCULATION ONLY ONLY ---1.5 C (2.7 NOTE For In-Range Tolerance, Refer to section 1.13.4 Code 29. Figure 1-9.

  • Page 36: Controller Set Point Above

    FALLING RISING TEMPERATURE TEMPERATURE +1.5 C (2.7 MODULATING MODULATING C (1.8 COOLING COOLING +0.5 C (0.9 +.20 SET POINT AIR CIRCULATION ONLY ---.20 AIR CIRCULATION ONLY ---0.5 C (0.9 ---1 C (1.8 HEATING HEATING ---1.5 C (2.7 NOTE For In-Range Tolerance, Refer to section 1.13.4 Code 29. Figure 1-10.

  • Page 37: Operation

    SECTION 2 OPERATION 2.1 PRE-TRIP INSPECTION (Before Starting) 2. Lift stylus (pen) by pushing in the stylus lifter and rotating the lifter clockwise (raising stylus at same time) until lifter locks in position. WARNING 3. Install new chart on recording thermometer Beware Of Unannounced Starting Of The making sure chart is under the four corner tabs.

  • Page 38: Unit Operation

    a. Cooling (See Figure 2-1.) 2.4 UNIT OPERATION With decreasing supply air temperature and if the 2.4.1 Cooling --- Controller Set Below --- 10_C (+14_F) supply air is above set point, the unit will be cooling with the condenser fan motor, compressor motor and NOTES evaporator fan motors energized.
  • Page 39 TO CONTROL TRANSFORMER = Energized Circuit = De-energized Circuit Figure 2-1. Cooling Downloaded from ManualsNet.com search engine...

  • Page 40: Heating Mode

    As the supply air decreases to the in-range tolerance b. Heating (See Figure 2-2.) below set point, relay TI and the in-range light de-energize (after 15 minutes time delay) and will remain The unit will only heat when the controller is set de-energized until the supply air increases to a tolerance above ---10_C (+14_F) as relay TH is electronically below set point.
  • Page 41 When the coil temperature reaches 24_C (75_F) 2.4.3 Defrost (See Figure 2-3.) defrost termination thermostat (DTT) opens to interrupt Refer to section 1.13.4 (Code 26) for description of the defrost cycle and the unit returns to its normal the defrost interval selector and automatic defrost function.

  • Page 42: Defrost

    Table 2-1. Electrical Control Positions --- Above --- 10_C (+14_F) CONTROL CIRCUIT COOLING HOLDING * Dehumidifica- HEATING DEFROST ZONE tion Compressor Contactor (C) Energized De-energized Energized De-energized De-energized Condenser Fan Motor Energized De-energized Energized De-energized De-energized Contactor (CF) One Speed Evaporator Energized Energized Energized...

  • Page 43: Troubleshooting

    SECTION 3 TROUBLESHOOTING INDICATION/ REFERENCE TROUBLE POSSIBLE CAUSES SECTION 3.1 UNIT WILL NOT START OR STARTS THEN STOPS No power to unit External power source OFF Turn on Start-Stop switch OFF or defective Check Circuit breaker tripped or OFF Check Loss of control power Circuit breaker OFF or defective Check...

  • Page 44: Unit Will Not Heat Or Has Insufficient Heating

    INDICATION/ REFERENCE TROUBLE POSSIBLE CAUSES SECTION 3.4 UNIT WILL NOT HEAT OR HAS INSUFFICIENT HEATING No power to unit Start-Stop switch OFF or defective Check Circuit breaker OFF or defective Check External power source OFF Turn on No control power Circuit breaker or fuse defective Replace Transformer defective (TR)

  • Page 45: Abnormal Pressures (Cooling)

    INDICATION/ REFERENCE TROUBLE POSSIBLE CAUSES SECTION ABNORMAL PRESSURES (COOLING) High discharge pressure Condenser coil dirty 4.16 or 4.21 Condenser fan rotating backwards 4.17 Condenser fan inoperative 4.17 Refrigerant overcharge or noncondensibles Quench solenoid valve malfunction 4.12 Condenser fan switch (CFS) (If used) in position “0” when water is not circulating thru water-cooled Condenser.

  • Page 46: Expansion Valve Malfunction

    INDICATION/ REFERENCE TROUBLE POSSIBLE CAUSES SECTION 3.11 EXPANSION VALVE MALFUNCTION Low suction Low refrigerant charge 4.2/4.4 pressure with high External equalizer line plugged Open superheat Wax, oil or dirt plugging valve or orifice 4.26 Ice formation at valve seat 4.2/4.3 Superheat too high 4.26.c Power assembly failure...

  • Page 47: Service

    SECTION 4 SERVICE 4.1 REMOVING THE REFRIGERANT d. Replace the filter-drier with a section of copper tubing with the appropiate fittings. This idea will help NOTE speed up the evacuation procedure. To avoid damage to the earth’s ozone layer, 4.3.3 Procedure use a refrigerant recovery system whenever removing refrigerant.

  • Page 48: Adding Or Checking The Refrigerant Charge

    hoses only, to the vacuum pump, electronic vacuum Units equipped with air-cooled condenser only, gauge, and refrigerant recovery system. partially block the condenser coil inlet air starting from the front of the condenser coil. Increase the area blocked With the unit service valves closed (back seated) and until the compressor discharge pressure increases to the vacuum pump and electronic vacuum gauge valves approximately 13 kg/cm@ (190 psig) with the container...

  • Page 49: Replacing The Compressor

    NOTES 4.5 REPLACING THE COMPRESSOR (See Figure 4-2.) 1. Check compressor Serial/Model Number plate for CFM displacement, refer to WARNING Table 1-2. Make sure power to the unit is OFF and power 2. The service replacement compressor is sold plug disconnected before replacing...

  • Page 50: Compressor Disassembly

    q. Fully backseat (open) both suction and discharge stops and valves have been removed. Remove the valve service valves. plate gasket. (See Figure 4-4.) Remove vacuum pump lines. d. Turn the compressor over on its side and remove the bottom plate. Remove the bolts and connecting rod caps Start unit and check refrigerant charge.

  • Page 51: Vane Oil Pump And Bearing Head

    5. A new bearing head complete with oil pump should be obtained from Carrier Transicold as a replacement to eliminate oil pump trouble. However, if the cause of pump failure can be determined in the field, replacement parts may be ordered from Carrier Transicold to repair the pump.

  • Page 52: Compressor Reassembly

    vapor from the crankcase. It may discharge through a tee The terminal mounting plate assembly as originally or a single equalizer tube. installed is assembled so as to leave a small space between the outer terminal bushing and the surface of the If the piston rings extend beyond the cylinder tops, mounting plate.

  • Page 53: Checking The Compressor Oil Level

    against the cylinder deck (middle bowed away from There are two types of oil pumps; vane and gear. See cylinder deck). Use new gaskets when reinstalling valve Figure 4-3 to identify which oil pump is used, then follow plates and cylinder heads. the correct procedure below.

  • Page 54: Checking Or Replacing Moisture-Liquid Indicator

    3. Turn unit off and the correct oil level should be fill plug. (See Figure 4-2.) Some compressors have the oil between 1/4 and 1/2 of the sight glass. If the level is above plug located on the crankcase, at the right or left side of 1/2, oil must be removed from the compressor.

  • Page 55: Checking Or Replacing High Pressure Switch

    After unit is in operation, inspect for moisture in 4.12 SERVICING QUENCH SOLENOID VALVE (QV) system. (Refer to section 4.9.) NOTE 4.11 CHECKING OR REPLACING HIGH This section is NOT APPLICABLE to PRESSURE SWITCH models having a thermostatic expansion 4.11.1 Replacing High Pressure Switch quench valve.

  • Page 56: Replacing The Evaporator Fan And Motor Assembly

    b. Determine which heater(s) need replacing by 4.14 REPLACING THE EVAPORATOR FAN AND MOTOR ASSEMBLY checking resistance on each heater as shown in section 1.4.e. The evaporator fans circulate air throughout the container by pulling air in the top of the unit. The air is Remove hold-down clamp securing heaters to coil.

  • Page 57: Recording Thermometer (Partlow)

    (mounted to instrument case.) Single probe is attached CAUTION to the element (bulb) capillary which senses the container Take necessary steps (place plywood over coil or return air temperature. If using two probes, the other use sling on motor) to prevent motor from falling probe is attached to the supply air temperature sensor.

  • Page 58: Recording Thermometer (Saginomiya)

    prepared by filling an insulated container (of sufficient 4. Push replacement bulb end and capillary size to completely immerse bulb) with ice cubes or through the unit. chipped ice, then filling voids between ice with water, and 5. Fill slots with silastic (RTV432, Dow Corning). agitating until mixture reaches 0_C (32_F) as shown by a 6.

  • Page 59: Rust Prevention And Maintenance Of Painted Surfaces

    rich primer. After the primer has dried, spray or brush on Replacing Sensor Probe finish coat of paint to match original unit color. 1. Remove box from unit. 4.21 SERVICING THE WATER-COOLED 2. Remove nut and bushing, item 9, Figure 4-17. CONDENSER 3.

  • Page 60: Water-Cooled Condenser Cleaning

    4. Acid proof pump and containers, or bottles with Centrifugal pump Close vent pipe rubber hose. 30 GPM at 35’ head vent valve when pump Priming What You Will Do --- (Summary): is running. Globe connection valves 1. Drain water from condenser tubing circuit. Clean Pump water tubes with Oakite No.

  • Page 61: Checkout Procedure For Optional Power Transformer

    d. Remove capscrews lower NOTE Microprocessor Control Panel. If the condenser cooling water is not being used as drinking water or is not re-circulated in a e. Remove three screws and loosen three other screws closed or tower system, neutralizing is not to remove cover (Item 3, Figure 4-26).

  • Page 62: Servicing Suction Solenoid Valve (69Nt40 Only)

    insulation). Make sure all seams are sealed tightly against 4. Remove enclosing tube and locknut assembly. the wiring to prevent moisture seepage. The gasket is inside the enclosing tube. k. Slide large heat shrink tubing over both splices and 5. Remove seat disc from inside of body and check shrink tubing and heat as in step j.

  • Page 63: Servicing The Modulating Solenoid Valve

    3. Remove enclosing tube collar (item NOTE Figure 4-22) using installation/removal tool supplied A cold coil is a coil which had not been operating with repair kit (item 3). and is assumed to be at ambient temperature. Hot coil temperatures, taken after the unit has been 4.

  • Page 64: Thermostatic Expansion Valve

    valve with a wet cloth while brazing. The coil need not be Tighten bolts equally. Fasten equalizer flare nut to removed. expansion valve. 4. Install new suction service valve gasket and 2. Leak check the unit per section 4.2. Evacuate install bolts in suction service valve.

  • Page 65: Evaporator Fan Motor Capacitors

    valve (one complete turn will change the setting The function of the analyzer is to read the approximately 1.7_C (3_F). microfarad value of a capacitor and to detect insulation breakdown under load conditions. The important 3. Reassemble the valve and then start the unit. advantages of a analyzer is its ability to locate capacitors 4.

  • Page 66: Microprocessor Controller

    5. At this point, if you are servicing the 4.29 MICROPROCESSOR CONTROLLER refrigeration unit, you are free to remove the ground NOTE strap from your wrist and complete your work. manual override operation microprocessor, refer to Table 4-7. 5a. Upon completion of your service work put the wrist strap back on, and re-install the controller into the CAUTION refrigeration unit.

  • Page 67: Microprocessor Control Panel

    Cool Heat Defrost In range Alarm SETPOINT/Code AIR TEMP/Data DataCORDER Screw Microprocessor Control Box Spacer Screw Cover Microprocessor Control Panel Figure 4-26. Microprocessor Control Box 4-21 Downloaded from ManualsNet.com search engine...
  • Page 68 Table 4-1. Wear Limits For Compressors MAXIMUM WEAR MAXIMUM WEAR FACTORY MAXIMUM FACTORY MAXIMUM FACTORY MINIMUM FACTORY MINIMUM BEFORE REPAIR PART NAME PART NAME INCHES INCHES INCHES MAIN BEARING Main Bearing Diameter 1.6268 41.3207 .0020 0.0508 Main Bearing Journal Diameter 1.6233 41.2318 .0020...
  • Page 69 Table 4-2. Compressor Torque Values TORQUE RANGE TORQUE RANGE SIZE USAGE USAGE DIAMETER THREADS FT LB FT-LB (INCHES) PER INCH 1/16 27 (pipe) 8 --- 12 1.11 --- 1.66 Pipe Plug --- Crankshaft 20 (pipe) 6 --- 10 0.83 --- 1.38 Oil Return Check Valve --- Crankcase 20 (pipe) 20 --- 25...
  • Page 70 Table 4-3. Partlow Bulb Temperature-Resistance Chart Table 4-5. Recommended Bolt Torque Values TEMPERATURE RESISTANCE BOLT DIA. THREADS TORQUE ˚F ˚C (OHMS) FREE SPINNING ---10 ---23.3 12561.00 5.2 in-lbs 0.05 9.6 in-lbs 0.11 ---5 ---20.6 10579.70 20 in-lbs 0.23 ---17.8 8944.17 23 in-lbs 0.26 75 in-lbs...
  • Page 71 Table 4-6. Temperature-Pressure Chart --- R-12 BOLD FIGURES = Inches Mercury Vacuum (cm Hg Vac) LIGHT FIGURES = psig (kg/cm@) TEMPERATURE PRESSURE TEMPERATURE PRESSURE ˚F ˚C Psig Kg/cm ˚F ˚C Psig Kg/cm ---40 ---40 11.0 27.90 -- .37 ---2 26.9 1.89 1.85 ---35...

  • Page 72: Defrost

    Table 4-7. Manual Override Operation of Microprocessor MODE STEP OPERATION DISCONNECT WIRE JUMPER WIRE Condenser Fan PD14 to TB15 from TB15 TB15 to CFC1 Full Cooling Compressor PD2 to TB7 from TB7 TB7 to CC1 Evaporator Fan PD6 to TB14 from TB14 TB14 to EFC1 Low Heating Evaporator Fan...

  • Page 73: Electrical Wiring Schematic (Models 69Nt40-444 & 444-2)

    SECTION 5 ELECTRICAL WIRING SCHEMATIC AND DIAGRAMS 5.1 INTRODUCTION This section contains Electrical Wiring Schematics and Diagrams covering the Models listed in Table 1-1. The following general safety notices supplement the specific warnings and cautions appearing elsewhere in this manual. They are recommended precautions that must be understood and applied during operation and maintenance of the equipment covered herein.
  • Page 74 Figure 5-1. Electrical Wiring Schematic (Models 69NT40-444 & 444-2) (Sheet 1 of 2) Downloaded from ManualsNet.com search engine...
  • Page 75 Figure 5-1. Electrical Wiring Schematic (Models 69NT40-444 & 444-2) (Sheet 2 of 2) Downloaded from ManualsNet.com search engine...

  • Page 76: Electrical Wiring Diagram (Models 69Nt40-444 & 444-2)

    Figure 5-2. Electrical Wiring Diagram (Models 69NT40-444 & 444-2) (Sheet 1 of 2) Downloaded from ManualsNet.com search engine...
  • Page 77 Figure 5-2. Electrical Wiring Diagram (Models 69NT40-444 & 444-2) (Sheet 2 of 2) Downloaded from ManualsNet.com search engine...
  • Page 78 Figure 5-3. Electrical Wiring Schematic (Model 69NT40-444-1) (Sheet 1 of 2) Downloaded from ManualsNet.com search engine...
  • Page 79 Figure 5-3. Electrical Wiring Schematic (Model 69NT40-444-1) (Sheet 2 of 2) Downloaded from ManualsNet.com search engine...
  • Page 80 Figure 5-4. Electrical Wiring Diagram (Model 69NT40-444-1) (Sheet 1 of 2) Downloaded from ManualsNet.com search engine...
  • Page 81 Figure 5-4. Electrical Wiring Diagram (Model 69NT40-444-1) (Sheet 2 of 2) Downloaded from ManualsNet.com search engine...
  • Page 82 Figure 5-5. Electrical Wiring Schematic (Model 69NT40-444-3) (Sheet 1 of 2) 5-10 Downloaded from ManualsNet.com search engine...
  • Page 83 Figure 5-5. Electrical Wiring Schematic (Model 69NT40-444-3) (Sheet 2 of 2) 5-11 Downloaded from ManualsNet.com search engine...
  • Page 84 Figure 5-6. Electrical Wiring Diagram (Model 69NT40-444-3) (Sheet 1 of 2) 5-12 Downloaded from ManualsNet.com search engine...
  • Page 85 Figure 5-6. Electrical Wiring Diagram (Model 69NT40-444-3) (Sheet 2 of 2) 5-13 Downloaded from ManualsNet.com search engine...
  • Page 86 Figure 5-7. Electrical Wiring Schematic (Model 69NT40-444-4) (Sheet 1 of 2) 5-14 Downloaded from ManualsNet.com search engine...
  • Page 87 Figure 5-7. Electrical Wiring Schematic (Model 69NT40-444-4) (Sheet 2 of 2) 5-15 Downloaded from ManualsNet.com search engine...
  • Page 88 Figure 5-8. Electrical Wiring Diagram (Model 69NT40-444-4) (Sheet 1 of 2) 5-16 Downloaded from ManualsNet.com search engine...
  • Page 89 Figure 5-8. Electrical Wiring Diagram (Model 69NT40-444-4) (Sheet 2 of 2) 5-17 Downloaded from ManualsNet.com search engine...
  • Page 90 Figure 5-9. Electrical Wiring Schematic (Model 69NT40-454) (Sheet 1 of 2) 5-18 Downloaded from ManualsNet.com search engine...
  • Page 91 Figure 5-9. Electrical Wiring Schematic (Model 69NT40-454) (Sheet 2 of 2) 5-19 Downloaded from ManualsNet.com search engine...
  • Page 92 Figure 5-10. Electrical Wiring Diagram (Model 69NT40-454) (Sheet 1 of 2) 5-20 Downloaded from ManualsNet.com search engine...
  • Page 93 Figure 5-10. Electrical Wiring Diagram (Model 69NT40-454) (Sheet 2 of 2) 5-21 Downloaded from ManualsNet.com search engine...
  • Page 94 Figure 5-11. Electrical Wiring Schematic (Model 69NT20-274) (Sheet 1 of 2) 5-22 Downloaded from ManualsNet.com search engine...
  • Page 95 Figure 5-11. Electrical Wiring Schematic (Model 69NT20-274) (Sheet 2 of 2) 5-23 Downloaded from ManualsNet.com search engine...
  • Page 96 Figure 5-12. Electrical Wiring Diagram (Model 69NT20-274) (Sheet 1 of 2) 5-24 Downloaded from ManualsNet.com search engine...
  • Page 97 Figure 5-12. Electrical Wiring Diagram (Model 69NT20-274) (Sheet 2 of 2) 5-25 Downloaded from ManualsNet.com search engine...
  • Page 98 Figure 5-13. Electrical Wiring Schematic (Model 69NT20-274-1) (Sheet 1 of 2) 5-26 Downloaded from ManualsNet.com search engine...
  • Page 99 Figure 5-13. Electrical Wiring Schematic (Model 69NT20-274-1) (Sheet 2 of 2) 5-27 Downloaded from ManualsNet.com search engine...
  • Page 100 Figure 5-14. Electrical Wiring Diagram (Model 69NT20-274-1) (Sheet 1 of 2) 5-28 Downloaded from ManualsNet.com search engine...
  • Page 101 Figure 5-14. Electrical Wiring Diagram (Model 69NT20-274-1) (Sheet 2 of 2) 5-29 Downloaded from ManualsNet.com search engine...
  • Page 102 Figure 5-15. Electrical Wiring Schematic (Model 69NT40-444-6) (Sheet 1 of 2) 5-30 Downloaded from ManualsNet.com search engine...
  • Page 103 Figure 5-15. Electrical Wiring Schematic (Model 69NT40-444-6) (Sheet 2 of 2) 5-31 Downloaded from ManualsNet.com search engine...
  • Page 104 Figure 5-16. Electrical Wiring Diagram (Model 69NT40-444-6) (Sheet 1 of 2) 5-32 Downloaded from ManualsNet.com search engine...
  • Page 105 Figure 5-16. Electrical Wiring Diagram (Model 69NT40-444-6) (Sheet 2 of 2) 5-33 Downloaded from ManualsNet.com search engine...
  • Page 106 Figure 5-17. Electrical Wiring Schematic (Model 69NT40-454-1) (Sheet 1 of 2) 5-34 Downloaded from ManualsNet.com search engine...
  • Page 107 Figure 5-17. Electrical Wiring Schematic (Model 69NT40-454-1) (Sheet 2 of 2) 5-35 Downloaded from ManualsNet.com search engine...
  • Page 108 Figure 5-18. Electrical Wiring Diagram (Model 69NT40-454-1) (Sheet 1 of 2) 5-36 Downloaded from ManualsNet.com search engine...
  • Page 109 Figure 5-18. Electrical Wiring Diagram (Model 69NT40-454-1) (Sheet 2 of 2) 5-37 Downloaded from ManualsNet.com search engine...
  • Page 110 Figure 5-19. Electrical Wiring Schematic (Model 69NT40-444-9) (Sheet 1 of 2) 5-38 Downloaded from ManualsNet.com search engine...
  • Page 111 Figure 5-19. Electrical Wiring Schematic (Model 69NT40-444-9) (Sheet 2 of 2) 5-39 Downloaded from ManualsNet.com search engine...
  • Page 112 Figure 5-20. Electrical Wiring Diagram (Model 69NT40-444-9) (Sheet 1 of 2) 5-40 Downloaded from ManualsNet.com search engine...
  • Page 113 Figure 5-20. Electrical Wiring Diagram (Model 69NT40-444-9) (Sheet 2 of 2) 5-41 Downloaded from ManualsNet.com search engine...
  • Page 114 Figure 5-21. Electrical Wiring Schematic (Model 69NT40-444-11) (Sheet 1 of 2) 5-42 Downloaded from ManualsNet.com search engine...
  • Page 115 Figure 5-21. Electrical Wiring Schematic (Model 69NT40-444-11) (Sheet 2 of 2) 5-43 Downloaded from ManualsNet.com search engine...
  • Page 116 Figure 5-22. Electrical Wiring Diagram (Model 69NT40-444-11) (Sheet 1 of 2) 5-44 Downloaded from ManualsNet.com search engine...
  • Page 117 Figure 5-22. Electrical Wiring Diagram (Model 69NT40-444-11) (Sheet 2 of 2) 5-45 Downloaded from ManualsNet.com search engine...
  • Page 118 Figure 5-23. Electrical Wiring Schematic (Model 69NT40-444-10) (Sheet 1 of 2) 5-46 Downloaded from ManualsNet.com search engine...
  • Page 119 Figure 5-23. Electrical Wiring Schematic (Model 69NT40-444-10) (Sheet 2 of 2) 5-47 Downloaded from ManualsNet.com search engine...
  • Page 120 Figure 5-24. Electrical Wiring Diagram (Model 69NT40-444-10) (Sheet 1 of 2) 5-48 Downloaded from ManualsNet.com search engine...
  • Page 121 Figure 5-24. Electrical Wiring Diagram (Model 69NT40-444-10) (Sheet 2 of 2) 5-49 Downloaded from ManualsNet.com search engine...
  • Page 122 Figure 5-25. Electrical Wiring Schematic (Model 69NT40-444-7 & 444-8) (Sheet 1 of 2) 5-50 Downloaded from ManualsNet.com search engine...
  • Page 123 Figure 5-25. Electrical Wiring Schematic (Model 69NT40-444-7 & 444-8) (Sheet 2 of 2) 5-51 Downloaded from ManualsNet.com search engine...
  • Page 124 Figure 5-26. Electrical Wiring Diagram (Model 69NT40-444-7 & 444-8) (Sheet 1 of 2) 5-52 Downloaded from ManualsNet.com search engine...
  • Page 125 Figure 5-26. Electrical Wiring Diagram (Model 69NT40-444-7 & 444-8) (Sheet 2 of 2) 5-53 Downloaded from ManualsNet.com search engine...
  • Page 126 Figure 5-27. Electrical Wiring Schematic (Model 69NT40-444-12) (Sheet 1 of 2) 5-54 Downloaded from ManualsNet.com search engine...
  • Page 127 Figure 5-27. Electrical Wiring Schematic (Model 69NT40-444-12) (Sheet 2 of 2) 5-55 Downloaded from ManualsNet.com search engine...
  • Page 128 Figure 5-28. Electrical Wiring Diagram (Model 69NT40-444-12) (Sheet 1 of 2) 5-56 Downloaded from ManualsNet.com search engine...
  • Page 129 Figure 5-28. Electrical Wiring Diagram (Model 69NT40-444-12) (Sheet 2 of 2) 5-57 Downloaded from ManualsNet.com search engine...
  • Page 130 Figure 5-29. Electrical Wiring Schematic (Model 69NT40-454-2 & 454-3) (Sheet 1 of 2) 5-58 Downloaded from ManualsNet.com search engine...
  • Page 131 Figure 5-29. Electrical Wiring Schematic (Model 69NT40-454-2 & 454-3) (Sheet 2 of 2) 5-59 Downloaded from ManualsNet.com search engine...
  • Page 132 Figure 5-30. Electrical Wiring Diagram (Model 69NT40-454-2 & 454-3) (Sheet 1 of 2) 5-60 Downloaded from ManualsNet.com search engine...
  • Page 133 Figure 5-30. Electrical Wiring Diagram (Model 69NT40-454-2 & 454-3) (Sheet 2 of 2) 5-61 Downloaded from ManualsNet.com search engine...
  • Page 134 Figure 5-31. Electrical Wiring Schematic (Model 69NT20--- 274--- 2) (Sheet 1 of 2) 5-62 Downloaded from ManualsNet.com search engine...
  • Page 135 Figure 5-31. Electrical Wiring Schematic (Model 69NT20--- 274--- 2) (Sheet 2 of 2) 5-63 Downloaded from ManualsNet.com search engine...
  • Page 136 Figure 5-32. Electrical Wiring Diagram (Model 69NT20--- 274--- 2) (Sheet 1 of 2) 5-64 Downloaded from ManualsNet.com search engine...
  • Page 137 Figure 5-32. Electrical Wiring Diagram (Model 69NT20--- 274--- 2) (Sheet 2 of 2) 5-65 Downloaded from ManualsNet.com search engine...
  • Page 138 Figure 5-33. Electrical Wiring Schematic (Model 69NT40-444--- 13) (Sheet 1 of 2) 5-66 Downloaded from ManualsNet.com search engine...
  • Page 139 Figure 5-33. Electrical Wiring Schematic (Model 69NT40-444--- 13) (Sheet 2 of 2) 5-67 Downloaded from ManualsNet.com search engine...
  • Page 140 Figure 5-34. Electrical Wiring Diagram (Model 69NT40-444--- 13) (Sheet 1 of 2) 5-68 Downloaded from ManualsNet.com search engine...
  • Page 141 Figure 5-34. Electrical Wiring Diagram (Model 69NT40-444--- 13) (Sheet 2 of 2) 5-69 Downloaded from ManualsNet.com search engine...
  • Page 142 Figure 5-35. Electrical Wiring Schematic (Model 69NT40-444--- 14) (Sheet 1 of 2) 5-70 Downloaded from ManualsNet.com search engine...
  • Page 143 Figure 5-35. Electrical Wiring Schematic (Model 69NT40-444--- 14) (Sheet 2 of 2) 5-71 Downloaded from ManualsNet.com search engine...
  • Page 144 Figure 5-36. Electrical Wiring Diagram (Model 69NT40-444--- 14) (Sheet 1 of 2) 5-72 Downloaded from ManualsNet.com search engine...
  • Page 145 Figure 5-36. Electrical Wiring Diagram (Model 69NT40-444--- 14) (Sheet 2 of 2) 5-73 Downloaded from ManualsNet.com search engine...
  • Page 146 Figure 5-37. Electrical Wiring Schematic (Model 69NT40-444-15) (Sheet 1 of 2) 5-74 Downloaded from ManualsNet.com search engine...
  • Page 147 Figure 5-37. Electrical Wiring Schematic (Model 69NT40-444-15) (Sheet 2 of 2) 5-75 Downloaded from ManualsNet.com search engine...
  • Page 148 Figure 5-38. Electrical Wiring Diagram (Model 69NT40-444-15) (Sheet 1 of 2) 5-76 Downloaded from ManualsNet.com search engine...
  • Page 149 Figure 5-38. Electrical Wiring Diagram (Model 69NT40-444-15) (Sheet 2 of 2) 5-77 Downloaded from ManualsNet.com search engine...
  • Page 150 Figure 5-39. Electrical Wiring Schematic (Model 69NT40-444-16) (Sheet 1 of 2) 5-78 Downloaded from ManualsNet.com search engine...
  • Page 151 Figure 5-39. Electrical Wiring Schematic (Model 69NT40-444-16) (Sheet 2 of 2) 5-79 Downloaded from ManualsNet.com search engine...
  • Page 152 Figure 5-40. Electrical Wiring Diagram (Model 69NT40-444-16) (Sheet 1 of 2) 5-80 Downloaded from ManualsNet.com search engine...
  • Page 153 Figure 5-40. Electrical Wiring Diagram (Model 69NT40-444-16) (Sheet 2 of 2) 5-81 Downloaded from ManualsNet.com search engine...
  • Page 154 Figure 5-41. Electrical Wiring Schematic (Model 69NT40-444-17) (Sheet 1 of 2) 5-82 Downloaded from ManualsNet.com search engine...
  • Page 155 Figure 5-41. Electrical Wiring Schematic (Model 69NT40-444-17) (Sheet 2 of 2) 5-83 Downloaded from ManualsNet.com search engine...
  • Page 156 Figure 5-42. Electrical Wiring Diagram (Model 69NT40-444-17) (Sheet 1 of 2) 5-84 Downloaded from ManualsNet.com search engine...
  • Page 157 Figure 5-42. Electrical Wiring Diagram (Model 69NT40-444-17) (Sheet 2 of 2) 5-85 Downloaded from ManualsNet.com search engine...
  • Page 158 Figure 5-43. Electrical Wiring Schematic (Model 69NT20-274-3) (Sheet 1 of 2) Revised 8-6-93 5-86 Downloaded from ManualsNet.com search engine...
  • Page 159 Figure 5-43. Electrical Wiring Schematic (Model 69NT20-274-3) (Sheet 2 of 2) 5-87 Revised 8-6-93 Downloaded from ManualsNet.com search engine...
  • Page 160 Figure 5-44. Electrical Wiring Diagram (Model 69NT20-274-3) (Sheet 1 of 2) Revised 8-6-93 5-88 Downloaded from ManualsNet.com search engine...
  • Page 161 Figure 5-44. Electrical Wiring Diagram (Model 69NT20-274-3) (Sheet 2 of 2) 5-89 Revised 8-6-93 Downloaded from ManualsNet.com search engine...
  • Page 162 Figure 5-45. Electrical Wiring Schematic (Model 69NT40-444-18) (Sheet 1 of 2) Revised 8-6-93 5-90 Downloaded from ManualsNet.com search engine...
  • Page 163 Figure 5-45. Electrical Wiring Schematic (Model 69NT40-444-18) (Sheet 2 of 2) 5-91 Revised 8-6-93 Downloaded from ManualsNet.com search engine...
  • Page 164 Figure 5-46. Electrical Wiring Diagram (Model 69NT40-444-18) (Sheet 1 of 2) Revised 8-6-93 5-92 Downloaded from ManualsNet.com search engine...
  • Page 165 Figure 5-46. Electrical Wiring Diagram (Model 69NT40-444-18) (Sheet 2 of 2) 5-93 Revised 8-6-93 Downloaded from ManualsNet.com search engine...
  • Page 166 Figure 5-47. Electrical Wiring Schematic (Model 69NT40-444-19) (Sheet 1 of 2) Revised 8-6-93 5-94 Downloaded from ManualsNet.com search engine...
  • Page 167 Figure 5-47. Electrical Wiring Schematic (Model 69NT40-444-19) (Sheet 2 of 2) 5-95 Revised 8-6-93 Downloaded from ManualsNet.com search engine...
  • Page 168 Figure 5-48. Electrical Wiring Diagram (Model 69NT40-444-19) (Sheet 1 of 2) Revised 8-6-93 5-96 Downloaded from ManualsNet.com search engine...
  • Page 169 Figure 5-48. Electrical Wiring Diagram (Model 69NT40-444-19) (Sheet 2 of 2) 5-97 Revised 8-6-93 Downloaded from ManualsNet.com search engine...
  • Page 170 Figure 5-49. Electrical Wiring Schematic (Models 69NT40-441-21 & 69NT40-444-21) (Sheet 1 of 2) Revised 8-6-93 5-98 Downloaded from ManualsNet.com search engine...
  • Page 171 Figure 5-49. Electrical Wiring Schematic (Models 69NT40-441-21 & 69NT40-444-21) (Sheet 2 of 2) 5-99 Revised 8-6-93 Downloaded from ManualsNet.com search engine...
  • Page 172 Figure 5-50. Electrical Wiring Diagram (Models 69NT40-441-21 & 69NT40-444-21) (Sheet 1 of 2) Revised 8-6-93 5-100 Downloaded from ManualsNet.com search engine...
  • Page 173 Figure 5-50. Electrical Wiring Diagram (Models 69NT40-441-21 & 69NT40-444-21) (Sheet 2 of 2) 5-101 Revised 8-6-93 Downloaded from ManualsNet.com search engine...
  • Page 174 Figure 5-51. Electrical Wiring Schematic (Models 69NT40-444-20, -444-22, -444-23 & 69NT40-441-22, -23, -25) (Sheet 1 of 2) Revised 8-6-93 5-102 Downloaded from ManualsNet.com search engine...
  • Page 175 Figure 5-51. Electrical Wiring Schematic (Models 69NT40-444-20, -444-22, -444-23 & 69NT40-441-22, -23, -25) (Sheet 2 of 2) 5-103 Revised 8-6-93 Downloaded from ManualsNet.com search engine...
  • Page 176 Figure 5-52. Electrical Wiring Diagram (Models 69NT40-444-20, -444-22, -444-23 & 69NT40-441-22, -23, -25) (Sheet 1 of 2) Revised 8-6-93 5-104 Downloaded from ManualsNet.com search engine...
  • Page 177 Figure 5-52. Electrical Wiring Diagram (Models 69NT40-444-20, -444-22, -444-23 & 69NT40-441-22, -23, -25) (Sheet 2 of 2) 5-105 Revised 8-6-93 Downloaded from ManualsNet.com search engine...
  • Page 178 Figure 5-53. Electrical Wiring Schematic (Model 69NT40-441-24) (Sheet 1 of 2) Revised 8-6-93 5-106 Downloaded from ManualsNet.com search engine...
  • Page 179 Figure 5-53. Electrical Wiring Schematic (Model 69NT40-441-24) (Sheet 2 of 2) 5-107 Revised 8-6-93 Downloaded from ManualsNet.com search engine...
  • Page 180 Figure 5-54. Electrical Wiring Diagram (Model 69NT40-441-24) (Sheet 1 of 2) Revised 8-6-93 5-108 Downloaded from ManualsNet.com search engine...
  • Page 181 Figure 5-54. Electrical Wiring Diagram (Model 69NT40-441-24) (Sheet 2 of 2) 5-109 Revised 8-6-93 Downloaded from ManualsNet.com search engine...
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This manual is also suitable for:

Transicold 69nt40-441Transicold 69nt40-444Transicold 69nt40-454

Table of Contents