Evaporator Section | Carrier 69NT40-511-199, 69NT40-521 instruction

b. Evaporator Section

The evaporator section contains the optional mechanical temperature recording bulb, return recorder sensor (RRS), return temperature sensor (RTS), thermostatic expansion valve, dual-speed evaporator fan motors and fans (2), evaporator coil and heaters, drain pan and heater, defrost termination sensor, heat termination thermostat, and heat exchanger. See Figure 2-2 and Figure 2-5 for sensor locations.

The evaporator fans circulate air throughout the container by pulling air in the top of the refrigeration unit, directing the air through the evaporator coil where it is either heated or cooled, and discharging the air through the bottom of the refrigeration unit into the container.

When transporting perishable (chilled) commodities, the fan motors will normally be in high speed above -10_C (+14_F), or -5_C (+23_F) optionally.

The evaporator coil heaters are accessible by removing the front lower access panel. The defrost termination sensor (DTS) is located on the coil center tube sheet and may be serviced by removing the upper rear panel, or by removing the left front upper access panel, disconnecting the evaporator fan connector and reaching through the access panel opening.

WARNING

Before servicing unit, make sure the unit circuit breakers (CB-1 & CB-2) and the start-stop switch (ST) are in the OFF position. Also disconnect power plug and cable.

T-268-07

2-2

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Carrier 69NT40-511-199, 69NT40-521 manual Evaporator Section

Contents

Container Refrigeration Unit Operation Container Refrigeration Unit Models Operating Precautions General Safety NoticesMaintenance Precautions Safety-1 268-07 Specific Warning and Caution Statements Safety-2 Table of Contents Operation Iii 268-07 Section Service List of Illustrations 27 Suction Solenoid Valve SSV -- Alco List of Tables Introduction Section Introduction Model Model Chart Transformer Humidity Sensor TransFresh PID 69NT40-511-58 69NT40-511-71 69NT40-511-95 69NT40-521-10 Refrigeration Unit -- Front Section General Description Evaporator Section Refrigeration Unit -- Rear Panels Removed 1011 Compressor Section Condenser Section 268-07 Condenser Section 1716 Receiver Section Units with Water-Cooled Condenser Water-Cooled Condenser Section Optional Control Box with a Single-Speed Compressor 1236 9 Control Box with a Two-Speed Compressor Optional Refrigeration System Data Electrical Data Step-Up Power Autotransformer Power Autotransformer OptionalTo Operate Unit on 380/460 vac Power Supply To Operate Unit on 190/230 vac Power Supply Full Open or Closed Positions Upper Fresh AIR Makeup VentLower Fresh AIR Makeup Vent Optional Air Sampling for Carbon Dioxide CO2 Level Refrigeration Circuit with Receiver 10. Refrigeration Circuit with Receiver 268-07 Water--Cooled Condenser with Water Pressure Switch WP Water-Cooled Condenser with Condenser Fan Switch CFSWATER-COOLED Condenser Optional Section Operation Suction Solenoid ValveSuction Solenoid Override Remote Monitoring Optional Safety and Protective Devices Safety and Protective DevicesUnsafe Condition Safety Device Device Setting Micro-Link 2i Controller/DataCORDER Module Brief Description MICRO-LINK 2i Controller Module Configuration Software Procedure for loading softwareOperational Software Controller Programming Memory Cards Configuration Title Default Option Number Controller Configuration Variables KEY Function General Layout of the Controller Section Display Module Controller Function Code Assignments Controller Function CodesCode Title Description Inapplicable Functions Display CPC Variable option 34 is set to F refer to Table Code Title Description Controller Alarms Controller Alarm Indications Model 69NT40-511-72ALL Models Check for recharging or replacing battery pack Error Description ERRMicroprocessor Condenser Pressure Control CPC Controller Temperature Control Section Operation in the economy mode Code 34 set to on PRE-TRIP Diagnostics PRE-TRIP Selection Menu Pre-Trip Mode Pre-Trip Test CodesTitle Description Seconds Component Normal Logic Crel 3 minutes Component Normal Logic CrelSeconds Minutes Addition, the test will fail if Addition, this test is skipped if Fail Integrated Datacorder Optional Configuration DataCORDER ConfigurationSetting Factory Default Code # Title Description DataCORDER Function Codes DataCORDER Alarms DataCORDER Alarm Indications Access to DataCORDER Functions DataCORDER Alarm Configurations Description Selection Generic Mode Standard ModeDataCorder Standard Configuration Description Tion USDA/ Message Trip Comment Usda RecordingPre-Trip Data Recording DataCORDER Scrollback Usda Cold Treatment Procedure Test # Title Data 10. DataCORDER Pre-Trip Data Standard Configuration Report Sample Cooling Falling Rising TemperatureSET Point AIR YES Step Compressor Cycles OFF PRE-TRIP Inspection Before Starting Operation Starting and Stopping Instructions Units equipped with the integrated DataCORDERAfter Starting Inspection Unit Operation Probe Check Defrost indicator will remain on throughout this periodController Set Above --10C +14F, or --5C +23F optionally Cooling in High Speed with Two-Speed Compressor See Figure 268-07 Cooling in High Speed with Two-Speed Compressor Control Transformer Cooling in Low Speed with Two-Speed Compressor See Figure Cooling in Low Speed with Two-Speed Compressor 268-07 Cooling with Single-Speed Compressor See Figure Cooling with Single-Speed Compressor 268-07 Heating See Figure Heating Mode 268-07 Snap Freeze Option DefrostArctic = 18 Volt Energized Circuit = De-energized Circuit Two-Speed Compressor Holding Zone Holding Zone Unit Operates Long or Continuously in Cooling Unit Runs but has Insufficient Cooling Remedy Unit will not Terminate HeatingUnit will not Defrost Properly Temperature Controller Malfunction Abnormal Noise or VibrationsNo Evaporator AIR Flow or Restricted AIR Flow WATER-COOLED Condenser or Water Pressure Switch Power Autotransformer Malfunction Manifold Gauge SET OpenedClosed Removing the Manifold Gauge Set Port To Discharge Service orBlue Hose Blue Knob Suction and Discharge Service Valves Pumping the Unit DownRefrigerant Leak Checking Refrigerant Charge Evacuation and Dehydration 268-07 Vacuum Pump Connections Adding Refrigerant to System Full Charge Adding Refrigerant to System Partial ChargeCompressor -- Model 06DR Compressor Disassembly Turn off valves on both hoses to pump10 9 8 Exploded View of Valve Plate Jack here Low Profile Gear Oil Pump Oil Pump and Bearing Head 11. Crankshaft Assembly Compression Rings Compressor Reassembly If compressor is without oil Adding Oil to Service Replacement CompressorCompressor OIL Level To Check the Oil Level in the Compressor To Check Filter-Drier High Pressure SwitchTo Replace Filter-Drier FILTER-DRIER To Replace the Evaporator Fan Assembly To disassemble the Evaporator Fan AssemblyTo Replace the Evaporator Coil When to check for a defective capacitor To assemble the Evaporator Fan AssemblyEvaporator FAN Motor Capacitors Removing the capacitor Capacitor analyzer Condenser FAN and Motor AssemblyTo Replace Condenser Coil Condenser Coil Ohmmeter Unit RunningUnit Off To replace the recording thermometer element BatterySaginomiya Recording Thermometer Calibration Power Autotransformer Optional Maintenance of Painted SurfacesSensor Checkout Procedure AMBS, DTS, RRS, RTS, SRS & STS Replacing Sensor Probe RRS or SRS RTS or STSReplacing Sensor STS and SRS OLD Style Probe Holder Sensor Mm 1-5/8 inches 35 mm 1/4 inch Sensor Cable Heat Shrink Large Heat Shrink TubingReplacing Sensor RRS and RTS Replacing Sensor Ambs or DTS Ambs or DTSSensor 25.4 mm 1.0 inch Mounting Stud 35mm 1/4 inch Sensor Crimp Fitting Heat Shrink Crimp FittingTubing Suction Solenoid Valve SSV Coil Checkout ProcedureReplacing the Coil Replacing Valve Internal Parts -- Alco See Figure To Replace Valve Ambient Temperature Cold CoilThermostatic Expansion Valve Removing Expansion Valve See Figure To Measure Superheat Installing Expansion Valve Removal Removing and Installing the Controller/DataCORDER ModuleCONTROLLER/DATACORDER Handling of Controller/DataCORDER Procedure for loading Operational Software InstallationProcedure for loading Configuration Software Controller/DataCORDER Programming Procedure What You Will Need Summary of Procedure Detailed Procedure ReturnPump Fine mesh Support Screen Temperature Resistance Ohms Partlow Bulb Temperature-Resistance ChartWhat You Can Do For Further Help Ambs and DTS Bolt DIA Threads Torque MKG Free Spinning Recommended Bolt Torque ValuesNonfree Spinning Locknuts ETC Wear Limits For Compressors Compressor Torque Values Temperature Pressure 0F --17.8C Box 35F 1.7C Box Ambient Air Temperature 35F 1.7C Box 0F --17.8C Box35 F 1.7 C Box 17.8 C Box Please Refer to File Diagrams For Schematics and Diagrams Index-1 268-07 Index Index-2 Index-3 268-07 Index-4 Index-5 268-07 Index-6