268-07 | Carrier 69NT40-511-199, 69NT40-521 guide

When the air temperature decreases to a predetermined tolerance above set point, relay TI energizes and the in-range light is illuminated.

(Refer to section 3.1.4, Code 30.)

If the air temperature continues to fall, modulating cooling starts at approximately 2.5_C (4.5_F) above set point. The modulating valve will have a variable current up to 1.30 amps at full modulation.

During this cooling mode, a running sum of the temperature differential (supply air temperature minus the set point) is kept. When the supply air falls below set point, the differential is negative. The longer supply air remains below set point, the greater the differential in the running sum.

When the supply air temperature decreases to 0.2_C below set point and the running sum is less than -250 degrees C-seconds, relays TN and TC de-energize

shutting off the condenser fan and compressor motors. Also, the cool light is de-energized.

The evaporator fan motors continue to run to circulate air throughout the container. The in-range light remains illuminated as long as the supply air is within a tolerance of set point, and the 15 minute override is met.

If the unit is in the holding mode (neither heating nor cooling) and the supply air temperature increases to 0.2_C (0.4_F) above set point, and providing a six minute off time has elapsed, relay TC energizes to restart the compressor. Also, at this time, the condenser fan motor starts and the cool light is illuminated.

During this mode the dual speed compressor can be either running in high or low speed depending on the box load. Refer to Figure 3-6 for a description of the speed change logic.

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Carrier 69NT40-511-199, 69NT40-521 manual 268-07

Contents

Container Refrigeration Unit Operation Container Refrigeration Unit Models Safety-1 268-07 General Safety NoticesOperating Precautions Maintenance Precautions 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 123 Control Box with a Single-Speed Compressor6 9 Control Box with a Two-Speed Compressor Optional Refrigeration System Data Electrical Data To Operate Unit on 190/230 vac Power Supply Power Autotransformer OptionalStep-Up Power Autotransformer To Operate Unit on 380/460 vac Power Supply Air Sampling for Carbon Dioxide CO2 Level Upper Fresh AIR Makeup VentFull Open or Closed Positions Lower Fresh AIR Makeup Vent Optional Refrigeration Circuit with Receiver 10. Refrigeration Circuit with Receiver 268-07 Water-Cooled Condenser with Condenser Fan Switch CFS Water--Cooled Condenser with Water Pressure Switch WPWATER-COOLED Condenser Optional Section Remote Monitoring Optional Suction Solenoid ValveOperation Suction Solenoid Override 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 Controller Programming Memory Cards Procedure for loading softwareConfiguration Software Operational Software Configuration Title Default Option Number Controller Configuration Variables KEY Function General Layout of the Controller Section Display Module Inapplicable Functions Display Controller Function CodesController Function Code Assignments Code Title Description CPC Variable option 34 is set to F refer to Table Code Title Description Controller Alarms Model 69NT40-511-72 Controller Alarm IndicationsALL Models Check for recharging or replacing battery pack ERR Error DescriptionMicroprocessor 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 Test Codes Pre-Trip ModeTitle Description Seconds Component Normal Logic Crel 3 minutes Crel Component Normal LogicSeconds Minutes Addition, the test will fail if Addition, this test is skipped if Fail Integrated Datacorder Optional DataCORDER Configuration ConfigurationSetting Factory Default Code # Title Description DataCORDER Function Codes DataCORDER Alarms DataCORDER Alarm Indications Access to DataCORDER Functions DataCORDER Alarm Configurations Description Selection Standard Mode Generic ModeDataCorder Standard Configuration Description Tion Usda Recording USDA/ Message Trip CommentPre-Trip Data Recording DataCORDER Scrollback Usda Cold Treatment Procedure Test # Title Data 10. DataCORDER Pre-Trip Data Standard Configuration Report Sample AIR Falling Rising TemperatureCooling SET Point YES Step Compressor Cycles OFF PRE-TRIP Inspection Before Starting Operation Unit Operation Units equipped with the integrated DataCORDERStarting and Stopping Instructions After Starting Inspection Cooling in High Speed with Two-Speed Compressor See Figure Defrost indicator will remain on throughout this periodProbe Check Controller Set Above --10C +14F, or --5C +23F optionally 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 Defrost Snap Freeze OptionArctic = 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 Unit will not Terminate Heating RemedyUnit will not Defrost Properly Abnormal Noise or Vibrations Temperature Controller MalfunctionNo Evaporator AIR Flow or Restricted AIR Flow WATER-COOLED Condenser or Water Pressure Switch Power Autotransformer Malfunction Opened Manifold Gauge SETClosed Removing the Manifold Gauge Set Blue Knob To Discharge Service orPort Blue Hose Pumping the Unit Down Suction and Discharge Service ValvesRefrigerant Leak Checking Refrigerant Charge Evacuation and Dehydration 268-07 Vacuum Pump Connections Adding Refrigerant to System Partial Charge Adding Refrigerant to System Full ChargeCompressor -- Model 06DR Turn off valves on both hoses to pump Compressor Disassembly10 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 To Check the Oil Level in the Compressor Adding Oil to Service Replacement CompressorIf compressor is without oil Compressor OIL Level FILTER-DRIER High Pressure SwitchTo Check Filter-Drier To Replace Filter-Drier To disassemble the Evaporator Fan Assembly To Replace the Evaporator Fan AssemblyTo Replace the Evaporator Coil Removing the capacitor To assemble the Evaporator Fan AssemblyWhen to check for a defective capacitor Evaporator FAN Motor Capacitors Condenser Coil Condenser FAN and Motor AssemblyCapacitor analyzer To Replace Condenser Coil Unit Running OhmmeterUnit Off Calibration BatteryTo replace the recording thermometer element Saginomiya Recording Thermometer Replacing Sensor Probe Maintenance of Painted SurfacesPower Autotransformer Optional Sensor Checkout Procedure AMBS, DTS, RRS, RTS, SRS & STS OLD Style Probe Holder RTS or STSRRS or SRS Replacing Sensor STS and SRS Sensor Cable Heat Shrink Large Heat Shrink Tubing Sensor Mm 1-5/8 inches 35 mm 1/4 inchReplacing Sensor RRS and RTS Sensor Crimp Fitting Heat Shrink Crimp FittingTubing Ambs or DTSReplacing Sensor Ambs or DTS Sensor 25.4 mm 1.0 inch Mounting Stud 35mm 1/4 inch Replacing Valve Internal Parts -- Alco See Figure Coil Checkout ProcedureSuction Solenoid Valve SSV Replacing the Coil Removing Expansion Valve See Figure Ambient Temperature Cold CoilTo Replace Valve Thermostatic Expansion Valve To Measure Superheat Installing Expansion Valve Handling of Controller/DataCORDER Removing and Installing the Controller/DataCORDER ModuleRemoval CONTROLLER/DATACORDER Controller/DataCORDER Programming Procedure InstallationProcedure for loading Operational Software Procedure for loading Configuration Software What You Will Need Summary of Procedure Return Detailed ProcedurePump Fine mesh Support Screen Ambs and DTS Partlow Bulb Temperature-Resistance ChartTemperature Resistance Ohms What You Can Do For Further Help Wear Limits For Compressors Recommended Bolt Torque ValuesBolt DIA Threads Torque MKG Free Spinning Nonfree Spinning Locknuts ETC Compressor Torque Values Temperature Pressure 0F --17.8C Box 35F 1.7C Box 35F 1.7C Box 0F --17.8C Box Ambient Air Temperature35 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