Heating See Figure | Carrier 69NT40-511-199, 69NT40-521 manual

4.4.5Heating (See Figure 4-4.)

The unit will heat only when the controller set point is above -10_C (+14_F), or -5_C (+23_F) optionally, as relay TH is electronically locked out to prevent heating when the controller set point is below -10_C (+14_F), or -5_C (+23_F) optionally.

If the air temperature decreases 0.5_C (0.9_F) below controller set point, TH closes and the system enters the heating mode which is designed to raise the container air temperature. When TH closes, power flows through TH contacts and the heat termination thermostat to energize the heat contactor (HR). This in turn energizes the heaters and heat light. The evaporator fans continue to run to circulate air throughout the container.

As the supply air decreases to the in-range tolerance below set point, relay TI and the in-range light de-energize (after a 15 minute time delay) and will remain de-energized until the supply air increases to a tolerance below set point. (Refer to section 3.1.4, Code 30.)

When the temperature rises to 0.2_C (0.4_F) below set point, TH opens (heating off) and the system again enters the holding zone. The compressor and condenser fan motor are not running as contactors CH and CF remain de-energized. The evaporator fans continue to run to circulate air throughout the container.

A safety heater termination thermostat (HTT) attached to an evaporator coil support, set to open at 54.5_C (130_F), will open the heating circuit if overheating occurs.

T-268-07

4-10

Image 85

Carrier 69NT40-511-199, 69NT40-521 manual Heating See Figure

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 123 Control Box with a Single-Speed Compressor6 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 Condenser Fan Switch CFS Water--Cooled Condenser with Water Pressure Switch WPWATER-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 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 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 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 Port To Discharge Service orBlue Hose Blue Knob 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 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 disassemble the Evaporator Fan Assembly To Replace 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 Unit Running OhmmeterUnit 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 Cable Heat Shrink Large Heat Shrink Tubing Sensor Mm 1-5/8 inches 35 mm 1/4 inchReplacing 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 Return Detailed ProcedurePump 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 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