Carrier OptimaLINE 69NT40-701-001 Operation And Service Manual
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Carrier OptimaLINE 69NT40-701-001 Operation And Service Manual

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Container Refrigeration
OPERATIONS AND SERVICE
MANUAL
For
OptimaLINE
69NT40-701-001 to 099
Container Refrigeration Units
T-383

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Summary of Contents for Carrier OptimaLINE 69NT40-701-001

  • Page 1 Container Refrigeration OPERATIONS AND SERVICE MANUAL OptimaLINE 69NT40-701-001 to 099 Container Refrigeration Units T-383...
  • Page 3 OPERATIONS AND SERVICE MANUAL OptimaLINE 69NT40-701-001 to 099 Container Refrigeration Units © 2024 Carrier Corporation Printed in USA October 2024 ●...

  • Page 5: Table Of Contents

    Table of Contents PARAGRAPH NUMBER PAGE 1 SAFETY SUMMARY ..............1–1 GENERAL SAFETY NOTICES .
  • Page 6 3.3.3 Water-Cooled Condenser Option ..........3–9 3.3.4 Receiver...
  • Page 7 4.3.5 Defrost Operation ............4–19 4.3.6 Defrost Related Settings .
  • Page 8 UNIT WILL NOT TERMINATE HEATING ......... . . 6–3 UNIT WILL NOT DEFROST PROPERLY .
  • Page 9 7.7.2 Installing an Expansion Valve (ECV or EEV) ........7–28 CONTROLLER SERVICE PROCEDURES .
  • Page 10 List of Figures FIGURE NUMBER Page Figure 2.1 Unit Nameplate ............. . . 2–1 Figure 3.1 Container Unit - Front Section .
  • Page 11 Figure 4.6 ContainerLINK - Downloads ........... . 4–50 Figure 4.7 ContainerLINK - View Real Time Data .

  • Page 12: List Of Tables

    List of Tables TABLE NUMBER Page Table 3–1 Refrigeration System Data ............3–22 Table 3–2 Electrical Data .

  • Page 13: Safety Summary

    Section 1 Safety Summary 1.1 General Safety Notices Installation and servicing of refrigeration equipment can be hazardous due to system pressures and electrical components. Only trained and qualified service personnel should install, repair, or service refrigeration equipment. When working on refrigeration equipment, observe all potential Danger, Warning and Caution hazards, including those shown below and on hazard labels attached to the unit.
  • Page 14 WARNING Beware of unannounced starting of the evaporator and condenser fans. The unit may cycle the fans and compressor unexpectedly as control requirements dictate. WARNING Do not attempt to remove power plug(s) before turning OFF the Start-Stop switch (ST), unit circuit breaker(s) and external power source.
  • Page 15 WARNING Always turn OFF the unit circuit breakers (CB-1 & optional CB-2) and disconnect main power supply before working on moving parts. WARNING Installation requires wiring to the main unit circuit breaker, CB-1. Make sure the power to the unit is off and power plug disconnected before beginning installation.
  • Page 16 To repair the unit, remove the faulty compressor and replace with an approved Carrier compressor. If the return of the compressor is not required, follow local waste collection & recycling regulations in discarding the compressor.

  • Page 17: Introduction

    Introduction 2.1 Introduction The Carrier Transicold OptimaLINE units, model numbers 69NT40-701-000 to 099, are of lightweight aluminum frame construction, designed to be bolted onto the front of a container and serve as the container’s front wall. Forklift pockets are provided for unit installation and removal.

  • Page 18: Feature Descriptions

    Carrier-provided rechargeable batteries can be recharged via the ML5 controller and allow for wireless communication in battery mode. A non-carrier rechargeable 3-wire battery would charge but the controller will not monitor anything related to it. A standard 2-wire NiCAD battery would not charge.

  • Page 19: Option Descriptions

    2.5 Option Descriptions Various options may be factory or field equipped to the base unit. These options are described below. 2.5.1 Dehumidification The unit is fitted with a humidity sensor and unit software can be configured to allow for dehumidification. In dehumidification mode, the controller will operate to reduce internal container moisture level.

  • Page 21: Description

    Section 3 Description 3.1 Introduction The container unit, shown in Figure 3.1, is designed so that the majority of the components are accessible from the front. The unit model number, unit serial number and parts identification number can be found on the unit nameplate on the side wall next to the power cable storage area.

  • Page 22: Component Overviews

    3.2 Component Overviews The container unit components, as shown in Figure 3.2, are explained in this manual by dividing into four sections: 1. Compressor section 2. Condenser section 3. Evaporator section 4. Control box section Figure 3.2 Container Unit Sections T-383...

  • Page 23: Compressor Section

    3.2.1 Compressor Section The compressor is a variable speed scroll compressor that receives refrigerant vapor from the evaporator and compresses it to a high pressure, high temperature gas before directing it to the condenser. The compressor section includes a compressor, variable frequency drive (VFD), discharge service valves (discharge and suction), discharge pressure transducer (DPT), suction pressure transducer (SPT), evaporator pressure transducer (EPT), a high pressure switch (HPS), a discharge temperature sensor (CPDS) and connections to the compressor.

  • Page 24: Figure 3.3 Compressor And Condenser Sections

    Figure 3.3 Compressor and Condenser Sections Standard Unit Unit with Water-Cooled Condenser 1) Compressor 5) Receiver with Sight Glass and Moisture Indicator 2) Variable Frequency Drive (VFD) 6) Filter Drier 3) Condenser Coil, MCHE 7) Economizer 4) Condenser Fan and Motor 8) Water Cooled Condenser (Option) - - - - - T-383...

  • Page 25: Figure 3.4 Compressor And Condenser Sections

    Figure 3.4 Compressor and Condenser Sections Receiver Assembly Economizer Assembly Compressor 1) Compressor Terminal Box 9) Receiver Sight Glass 2) Discharge Service Valve 10) Receiver Moisture Indicator 3) High Pressure Switch (HPS) 11) Fusible Plug 4) Discharge Temperature Sensor (CPDS) 12) Liquid Line Service Valve / King Valve 5) Discharge Pressure Transducer (DPT) 13) Economizer Expansion Valve (ECV)

  • Page 26: Figure 3.5 Evaporator Section

    Figure 3.5 Evaporator Section 9, 10 1) Evaporator Fan and Motor (EM1, EM2) 6) Evaporator Coil 2) Return Temperature Sensor (RTS) / Return 7) Heaters (6) Recorder Sensor (RRS) 8) Defrost Drain 3) Humidity Sensor (HS)** 9) Heat Termination Thermostat (HTT)** 4) Electronic Expansion Valve (EEV) 10) Defrost Temperature Sensor (DTS)** 5) Evaporator Temperature Sensors (ETS1 / ETS2)

  • Page 27: Figure 3.6 Control Box Section

    Figure 3.6 Control Box Section 1) Controller 8) Condenser Fan Contactor Low Speed (CL) 2) Controller Battery Pack and Battery 9) Condenser Fan Contactor High Speed (CF) Note: located above controller (not shown) 10) Low Speed Evaporator Fan Contactor (ES) 3) Start/Stop Switch 11) High Speed Evaporator Fan Contactor (EF) 4) Compressor Contactor (CH)

  • Page 28: Main Component Descriptions

    3.3 Main Component Descriptions 3.3.1 Compressor The compressor, shown in Figure 3.7, receives refrigerant vapor from the evaporator and compresses it to a high pressure, high temperature gas before directing it to the condenser. The compressor contains a terminal box, oil drain, refrigerant discharge and suction connections.

  • Page 29: Water-Cooled Condenser Option

    3.3.3 Water-Cooled Condenser Option The unit may contain an optional brazed plate water-cooled condenser (WCC), shown in Figure 3.9. The WCC contains a heat exchanger, water lines and a water pressure switch. When operating with a WCC, the condenser fan is deactivated by the water pressure switch. The receiver is retained in this configuration and the WCC is placed between the air-cooled condenser and the receiver.

  • Page 30: Filter Drier

    3.3.5 Filter Drier Refrigerant flows from the receiver through the filter drier, shown in Figure 3.11, which removes particulates and small amounts of water from the refrigerant to keep it clean and dry. Figure 3.11 Filter Drier 3.3.6 Economizer The economizer, shown in Figure 3.12, is only active when the unit enables economized mode and the controller energizes the economizer expansion valve (ECV), see...

  • Page 31: Evaporator Coil And Fans

    3.3.7 Evaporator Coil and Fans Refrigerant enters the evaporator coil, shown in Figure 3.13, as a low pressure, low temperature saturated mixture and exits as a vapor. As the refrigerant enters the coil, two dual speed evaporator fans blow air on the coil. Heat is absorbed from the air by the balance of the liquid, causing it to vaporize in the coil.

  • Page 32: Heat Termination Thermostat

    3.3.9 Heat Termination Thermostat The heat termination thermostat (HTT), shown in Figure 3.15, is a safety device attached to an evaporator coil circuit that opens the heating circuit if overheating occurs. Figure 3.15 Heat Termination Thermostat (HTT) 3.3.10 Evaporator Access Panels and Air Makeup Vent Most evaporator components are accessible by removing the upper back rear panel, inside the container unit.

  • Page 33: Service Valves Descriptions

    3.4 Service Valves Descriptions 3.4.1 Compressor Service Valves The discharge service valve and suction service valve, shown in Figure 3.17, allow connecting of the manifold gauge set to perform refrigerant service. The service valves are provided with a double seat and an access valve which enables servicing of the compressor and refrigerant lines.

  • Page 34: Refrigerant Valves Descriptions

    3.5 Refrigerant Valves Descriptions 3.5.1 Electronic Expansion Valve The electronic expansion valve (EEV), shown in Figure 3.19, drops the pressure of the liquid refrigerant to suction pressure. As this happens, some of the liquid vaporizes to a gas (flash gas), removing heat from the remaining liquid.

  • Page 35: Refrigerant Probes Description

    3.6 Refrigerant Probes Description 3.6.1 Compressor Discharge Temperature Sensor The compressor discharge temperature sensor (CPDS), shown in Figure 3.21, measures the temperature of the refrigerant as it is discharged from the compressor. NOTE: The CPDS reading can be viewed on the unit display at function code Cd11. Figure 3.21 Compressor Discharge Temperature Sensor (CPDS) 3.6.2 High Pressure Switch...

  • Page 36: Discharge Pressure Transducer

    3.6.3 Discharge Pressure Transducer The discharge pressure transducer (DPT), shown in Figure 3.23, monitors refrigerant pressure on the discharge side of the compressor. The DPT is located behind the receiver. NOTE: The DPT reading can be viewed on the unit display at function code Cd14. Figure 3.23 Discharge Pressure Transducer (DPT) 3.6.4 Economizer Pressure Transducer...

  • Page 37: Economizer Temperature Sensor

    3.6.5 Economizer Temperature Sensor The economizer temperature sensor (ECT), shown in Figure 3.25, monitors refrigerant temperature between the economizer and the compressor. It is located near the economizer connection to the compressor. NOTE: The ECP reading can be viewed on the unit display at function code Cd84. Figure 3.25 Economizer Temperature Sensor (ECT) 3.6.6 Evaporator Temperature Sensor...

  • Page 38: Evaporator / Suction Pressure Transducer

    3.6.7 Evaporator / Suction Pressure Transducer The evaporator pressure transducer (EPT) and suction pressure transducer (SPT), shown in Figure 3.27, monitors refrigerant on the suction side of the compressor. NOTE: The EPT and SPT readings can be viewed on the unit display at function code Cd12. Figure 3.27 Evaporator Pressure Transducers - EPT (top) and SPT (bottom) 3.7 Air Stream Sensors Descriptions 3.7.1...

  • Page 39: Return Temperature Sensors

    3.7.2 Return Temperature Sensors The return temperature sensor (RTS) and return recorder sensor (RRS) are shown in Figure 3.29. The RTS monitors the return air temperature at the top of the container unit above the evaporator fans. The controller maintains the return air temperature at setpoint during frozen mode according to the RTS. The RRS is for recording temperature and also to backup the RTS in case of failure.

  • Page 40: Defrost Temperature Sensor

    3.7.4 Defrost Temperature Sensor The defrost temperature sensor (DTS), shown in Figure 3.31, determines the initiation of Defrost mode. When the DTS senses a temperature less than 10°C (50°F), the defrost options become active and the timer is engaged for the initiation of the defrost cycle.

  • Page 41: Usda Probes And Cargo Probe

    3.7.6 USDA Probes and Cargo Probe If equipped, the unit has the capability of recording three USDA probes (USDA 1-3) and one cargo probe. The 3- pin receptacles for plugging in the probes are located in the evaporator section. The probe leads are plugged into the desired receptacle, shown in Figure 3.33.

  • Page 42: Table 3-1 Refrigeration System Data

    3.9 Refrigeration System Data WARNING EXPLOSION HAZARD: Failure to follow this WARNING can result in death, serious personal injury and / or property damage. Never use air or gas mixtures containing oxygen (O2) for leak testing or operating the product. Charge only with refrigerants R-134a or R-513A as specified for the unit model number.

  • Page 43: Safety And Protective Devices

    Table 3–2 Electrical Data (Continued) Evaporator Coil Heaters Number of Heaters Rating 750 watts +5/-10% each @ 230 VAC Resistance (cold) 66.8 to 77.2 ohms @ 20°C (68°F) Type Sheath Evaporator Fan Motor(s) Nominal Supply 380 VAC, 3 Phase, 460 VAC, 3 Phase, 50 Hz +/- 1.25 Hz 60 +/- 1.25 Hz Full Load Amps (H / L)

  • Page 44: Table 3-3 Safety And Protective Devices

    Table 3–3 Safety and Protective Devices Unsafe Condition Device Device Setting Excessive current draw Circuit Breaker (CB-1, 25 amp) - Manual Reset Trips at 29 amps (460 VAC) Excessive current draw in the Fuse (F3 / F4) 7.5 amp rating control circuit Excessive current draw by the Fuse (F1 / F2)

  • Page 45: Figure 3.34 Refrigeration Circuit - Standard Units

    Figure 3.34 Refrigeration Circuit - Standard Units Discharge Liquid Saturated Suction Vapor Mixture Vapor 1) Compressor 13) Economizer 2) Discharge Service Valve 14) Economizer Expansion Valve (ECV) 3) High Pressure Switch (HPS) 15) Economizer Pressure Transducer (ECP) 4) Discharge Temperature Sensor (CPDS) 16) Economizer Temperature Sensor (ECT) 5) Discharge Pressure Transducer (DPT) 17) Economizer Connection...

  • Page 46: Figure 3.35 Refrigeration Circuit - Units With Water-Cooled Condenser

    Figure 3.35 Refrigeration Circuit - Units with Water-Cooled Condenser Discharge Liquid Saturated Suction Vapor Mixture Vapor 1) Compressor 14) Economizer 2) Discharge Service Valve 15) Economizer Expansion Valve (ECV) 3) High Pressure Switch (HPS) 16) Economizer Pressure Transducer (ECP) 4) Discharge Temperature Sensor (CPDS) 17) Economizer Temperature Sensor (ECT) 5) Discharge Pressure Transducer (DPT) 18) Economizer Connection...

  • Page 47: Temperature Control Microprocessor System

    Section 4 Microprocessor 4.1 Temperature Control Microprocessor System The temperature control Micro-Link 5 microprocessor system consists of a controller (control module), display module, keypad and interconnecting wiring. 4.1.1 Controller The controller, see Figure 4.1, is fitted with power connectors, a micro USB port and short range wireless connectivity.

  • Page 48: Figure 4.2 Display Module And Keypad

    4.1.2 Display Module and Keypad The display module and keypad, as shown in Figure 4.2, are mounted on the control box door and serve to provide user access and readouts for both of the controller functions: temperature control and DataCORDER. The functions are accessed by keypad selections and viewed on the display module.

  • Page 49: Controller Software

    • Provides battery-powered ability to access or change selected codes and setpoint without AC power connected. This is only if the carrier-provided rechargeable battery option is installed. 4.2.1 Configuration Software (CnF Variables) Configuration software is a variable listing of the components available for use by the operational software. This software is factory installed in accordance with the equipment fitted and options listed on the original purchase order.

  • Page 50: Operational Software (Cd Function Codes)

    4.2.2 Operational Software (Cd Function Codes) The operational software is the actual operation programming of the controller which activates or deactivates components in accordance with current unit operating conditions and selected modes of operation. The programming is divided into function codes. Some of the codes are read only, while the remaining codes may be user configured.

  • Page 51: Table 4-3 Controller Function Codes (Cd) - Summary

    Table 4–3 Controller Function Codes (Cd) - Summary Code Description Configurable Cd01 Compressor Capacity Percentage Cd03 Compressor Current / Percentage / Power Cd04 Line Current, Phase A Cd05 Line Current, Phase B Cd06 Line Current, Phase C Cd07 Mains Supply Voltage Cd08 Mains Supply Frequency Cd09...
  • Page 52 Code Description Configurable Cd65 TripWise Cd66 Power (kW) Cd67 Energy (kW-hr) Cd70 Temperature Setpoint Lock Cd71 EverFRESH Mode Cd72 Air Compressor Hours Since Last Service Cd73 Air Compressor Total Operational Hours Cd74 Controller Diagnostic Cd75 Pharma Mode Cd76 CO2 Injection Mode Cd77 Baudrate Selection Cd78...
  • Page 53 If the test result detects a temperature out of range condition (greater than 45 deg C), the display will show “toor”. The smart battery will not charge. • If the test result is Non-Carrier, the display will show “not C”. • If the test result is No Battery, the display will show “nobAt”.
  • Page 54 Cd23 Evaporator Fan State Cd23 displays the current state of the evaporator fan as OFF, LOW or HIGH. Cd25 Time Remaining Until Defrost Cd25 displays the time remaining until the unit goes into defrost (in tenths of an hour). This value is based on the actual accumulated compressor running time.
  • Page 55 Cd32 System Current Limit (Amperes) Cd32 displays the current limit, which is the maximum current draw allowed on any phase at any time. Limiting the unit’s current reduces the load on the main power supply. When desirable, the limit can be lowered. Note, however, that capacity is also reduced.
  • Page 56 Cd48 Dehumidification / Bulb Mode Cd48 will initially display current Dehumidification Mode; “bUlb” (bulb cargo mode), “dEhUM” (normal dehumidification), or “OFF”. Press the ENTER key to take the interface down into a hierarchy of parameter selection menus (mode, setpoint, evaporator speed, DTT setting). Press the ENTER key in any parameter selection menu to commit selection of the currently displayed parameter and cause the interface to descend into the next parameter selection menu.
  • Page 57 Turn On ACT: 1. With “ACt” displayed, select “On” and press the ENTER key to enable ACT Mode. See Section 5.9.3 detail procedure to set ACT values using Cd51. While ACT is On: • The left display will flash “COLd” and the right display will flash “trEAt”, and this will alternate between the unit setpoint and control temperature at 5 second intervals.
  • Page 58 Cd54 Suction Port Superheat / Electronic Expansion Valve Status Cd54 displays the reading for evaporator superheat (suction temperature minus suction saturation temperature as calculated from suction pressure) in the right display. Press the ENTER key to show the reading for Electronic Expansion Valve (EEV) position (%) in the left display. Cd55 Discharge Superheat Cd55 displays discharge superheat (discharge temperature minus discharge saturation temperature as calculated from discharge pressure) values in C / F as calculated by the discharge temperature minus the...
  • Page 59 Perishable FuelWise Mode is an extension of Perishable Mode. When active, the system will perform Perishable Pulldown operation. The compressor will be turned off when the controlled temperature is less than or equal to the setpoint. During the compressor off-cycle period, the evaporator fans are switched to low speed. When the heater is turned on, or when the compressor is turned on to provide cooling, the evaporator fans are switched to high speed.
  • Page 60 Cd70 Temperature Setpoint Lock Cd70 enables or disables the Temperature Setpoint Lock feature. When set to “On”, this will prevent setpoint change from the keypad. The default setting is “OFF”. An event will be recorded in the DataCorder each time an action is taken at Cd70.
  • Page 61 Cd74 Controller Diagnostic Cd74 is for running a Controller Self Diagnostic test. After selecting CD74, press the ENTER key while “tESt” is displayed to run the test. While the test is running, “tESt” will flash on the display. Once the test is complete, the Test Result will be displayed.

  • Page 62: Modes Of Operation

    Cd78 EverFRESH Air Compressor State Cd78 displays the state of the EverFRESH Air Compressor as On or OFF. If a unit does not have the EverFRESH option, dashes “-----” will be displayed. This code has no sub menu. Cd79 EverFRESH Water Drain Valve (WDV) State Cd79 displays the state of the EverFRESH Water Drain Valve (WDV) as On or OFF.

  • Page 63: Figure 4.3 Perishable Mode - Cooling And Heating Chart

    Figure 4.3 Perishable Mode - Cooling and Heating Chart Perishable Pulldown ° +2.0 Perishable Cooling ° +0.25 Setpoint Setpoint ° ° -0.25 -0.25 ° -0.50 Perishable Heating Temperature Temperature Decreasing Increasing 4.3.2.1 Perishable Dehumidification Perishable Dehumidification is provided to control the return air humidity levels inside the container to below a set value.

  • Page 64: Frozen Mode Temperature Control

    4.3.2.7 Pharma Mode Pharma Mode option (ML3 only for now) allows cargoes to be maintained at temperature setpoints of either 5°C (41°F) or 20°C (68°F), while maintaining lower humidity levels. Pharma Mode is active when a unit is equipped with a humidity sensor, code Cd75 is set to ON and a temperature setpoint has been chosen at Cd75.

  • Page 65: Defrost Operation

    • If defrost was initiated by the probe check logic, then the Probe Check is carried out after the completion of the defrost cycle. A Probe Check is initiated only when there is an inaccuracy between the controller temperature sensors. For more information on Probe Diagnostics, see Section 5.8.

  • Page 66: Controller Alarms

    4.4 Controller Alarms Alarm display is an independent controller software function. If an operating parameter is outside of expected range or a component does not return the correct signals back to the controller, an alarm is generated. The alarm philosophy balances the protection of the refrigeration unit and that of the refrigerated cargo. The action taken when an error is detected always considers the survival of the cargo.

  • Page 67: Alarm Code Descriptions

    4.4.2 Alarm Code Descriptions A summary of alarms is provided in Table 4–4, and completed descriptions below the table. Table 4–4 Alarm Indications - Summary Code Description AL003 Evaporator Superheat Control Failure AL012 Variable Frequency Drive (VFD) Control Instruction Timeout AL013 Variable Frequency Drive (VFD) Communication Failure AL015...
  • Page 68 Table 4–4 Alarm Indications - Summary Code Description AL265 Discharge Pressure Transducer (DPT) Fault AL266 Evaporator Pressure Transducer (EPT) Fault AL267 Humidity Sensor (HS) Fault AL269 Evaporator Temperature Sensors (ETS1 / ETS2) Fault AL270 Supply Recorder Sensor (SRS) Fault AL271 Return Recorder Sensor (RRS) Fault AL272 USDA1 Temperature Out of Range...
  • Page 69 Component: Evaporator Fans Troubleshooting: Confirm that the fans are operating properly. Replace fan(s) if defective. See Evaporator Fan Motor Assembly, Section 7.6. AL012 Variable Frequency Drive (VFD) Control Instruction Timeout Cause: Communication timeout between the VFD and the controller after attempted VFD restart. Component: Variable Frequency Drive (VFD) Troubleshooting:...
  • Page 70 Troubleshooting: Confirm accurate SPT pressure readings. Hook up the Manifold Gauge Set to check pressures. See Manifold Gauge Set, Section 7.1.1. Replace the SPT if defective. Component: Monitor the unit. The alarm is display only; the alarm may clear itself during operation. Troubleshooting: If the alarm remains active or repeats, replace the compressor at next available opportunity.
  • Page 71 AL022 Evaporator Fan Internal Protector Open Cause: The evaporator motor internal protector (IP) is open. Component: Evaporator motor Troubleshooting: Shut down the unit and disconnect power. Check the harness between CA22 and CA12. If open circuit, check the evaporator motor IP at plug connection pins 4 & 6. Replace defective evaporator fan motor. See Evaporator Fan Motor Service, Section 7.6.
  • Page 72 AL065 Discharge Pressure Transducer (DPT) Failure Cause: The Compressor Discharge Pressure Transducer (DPT) is out of range. Component: Discharge Pressure Transducer (DPT) Troubleshooting: Confirm accurate DPT pressure readings. See Refrigerant Service, Section 7.1. Replace the DPT if defective. AL066 All Low Pressure Sensor Failure (EPT and SPT) Cause: Both Suction Pressure Transducer (SPT) and Evaporator Pressure Transducer (EPT) values are outside of their operating range and the compressor has been on for at least 60 continuous seconds of controller clock time...
  • Page 73 AL093 Variable Frequency Drive (VFD) Fan Failure Cause: The Variable Frequency Drive (VFD) temperature exceeded the trip level with a fan error detected. Component: Variable Frequency Drive (VFD) Fan Troubleshooting: Verify that the fan inlet and outlets are clear and the fan is free to rotate. If the alarm cannot be reset, replace the VFD fan.
  • Page 74 AL202 Economizer Superheat Control Fault Cause: Low Economizer or Discharge Superheat while the Economizer Expansion Valve (ECV) is 0% open Component: Economizer Expansion Valve (ECV) Troubleshooting: Check the ECV wiring and ensure that stepper driver is installed securely. Check operation of the ECV. Replace the ECV if defective.
  • Page 75 AL208 Compressor Pressure Ratio High Cause: The controller detects that discharge pressure to suction pressure ratio is too high. The controller will attempt to correct the situation by restarting the compressor. Component: Discharge Pressure Transducer (DPT) Troubleshooting: Confirm accurate DPT pressure readings. See Refrigerant Service, Section 7.1.
  • Page 76 Component: Non-condensables in the refrigeration system Troubleshooting: With the unit off, allow the system to stabilize to ambient temperature. Check system pressure against the Pressure / Temperature chart. Correct as required. See Refrigerant Service, Section 7.1. Component: Refrigerant Troubleshooting: Check refrigerant level. Correct as required. See Refrigerant Service, Section 7.1.
  • Page 77 AL251 Data Storage Fault (Non-Volatile Memory Fault) Cause: Controller memory failure Component: Controller Troubleshooting: 1. Press the ENTER key when “CLEAr” is displayed to attempt to clear the alarm. If the action is successful (all alarms are inactive), alarm 251 will reset. 2.
  • Page 78 AL256 Return Temperature Sensor (RTS) Fault Cause: The Return Temperature Sensor (RTS) reading is invalid. Component: Return Temperature Sensor (RTS) Troubleshooting: Perform a pre-trip P5. If P5 passes, no further action is required. If P5 fails, replace the defective sensor as determined by P5.
  • Page 79 AL261 Improper Heater Current Fault Cause: The current draw during heat or defrost mode is improper. Component: Heater(s) Troubleshooting: While in heat or defrost mode, check for proper current draw at the heater contactors. Reference the Electrical Data table in Section 3.10.
  • Page 80 AL266 Evaporator Pressure Transducer (EPT) Fault Cause: The Evaporator Pressure Transducer (EPT) is out of range. Component: Evaporator Pressure Transducer (EPT) Troubleshooting: Confirm accurate EPT pressure readings. See Refrigerant Service, Section 7.1. Performing a pre-trip P5-9 test will also check the transducers. Replace the EPT if defective. If the alarm persists, it may indicate a failing compressor.
  • Page 81 AL272 USDA1 Temperature Out of Range Cause: The USDA Temp 1 Sensor is out of range. Component: Sensor Troubleshooting: Validate sensor values. See the Sensor Checkout Procedure, Section 7.10.2. Replace the sensor if defective. If not, verify harness wiring and controller connections. AL273 USDA2 Temperature Out of Range Cause: The USDA Temp 2 Sensor is out of range.
  • Page 82 AL289 DataCorder Storage Fault Cause: The DataCORDER is unable to store data. Component: DataCORDER Troubleshooting: Power cycle the unit and verify that the alarm goes inactive. If the alarm stays active, replace the controller. See Controller Service, Section 7.8. AL293 Variable Frequency Drive (VFD) Fan Fault Cause: A fan error was detected while the VFD temperature is not exceeding trip level.
  • Page 83 EA current is not correct. Access function code Cd74 and perform a ML5 self-check to verify the controller is functioning properly. If it passes, perform a ohm check on the back of CA08 pin and TRX2 (ground) using the carrier service tool (part # 22-50485-00). 4-37...
  • Page 84 Component: Water Drain Valve (WDV) Troubleshooting: A closed or plugged WDV or filter housing could prevent any air from entering the container. P20-3 tests valve operation. Potential failure results: • MPT pressure fails to change when the valve is energized. Check for signs of blockage by removing the WDV housing and particulate filter housings.
  • Page 85 AL977 Membrane Pressure Transducer (MPT) Fault Cause: When the EverFRESH Air Compressor (EAC) is running and pressure is not between -5 psig and 200 psig or the EAC has been OFF for five minutes and pressure is not within the range of -5 psig and 5 psig. Component: Membrane Pressure Transducer (MPT) Troubleshooting:...
  • Page 86 AL980 EverFRESH Air Valve (EA) Fault Cause: When the system energizes the EverFRESH Air Valve (EA) solenoid and membrane pressure does not drop 40 psi, the alarm is triggered. The alarm triggers OFF when membrane pressure transducer (MPT) pressure drop is more than 40 psi when EA is opened.
  • Page 87 AL983 CO2 Injection Pressure Transducer (IPT) Fault Cause: If unit is configured with the CO2 injection option, this alarm is triggered when Cd76 is set to “On” to enable CO2 injection and volts are not in the range of 0.5 to 4.95 VDC. Component: CO2 Injection Pressure Transducer (IPT) Troubleshooting:...

  • Page 88: Pre-Trip Inspection

    4.5 Pre-Trip Inspection Pre-Trip Inspection is an independent controller function that suspends the normal refrigeration control mode activities and provides pre-programmed test routines of unit operations. The test routines can be run in Auto Mode, which automatically performs a sequence of pre-programmed tests, or Manual Mode, which allows individual tests to be selected with the keypad.

  • Page 89: Pre-Trip Test Codes

    4.5.4 Pre-Trip Test Codes A summary of alarms is provided in Table 4–5, and completed descriptions below the table. Table 4–5 Pre-Trip Codes Summary Code Description Auto 1 Auto 2 Auto 3 P0-0 RMU Detection P1-0 Heaters On P1-1 Heaters Off P2-0 Low Speed Condenser Fan On P2-1...
  • Page 90 Configuration Display, Indicator Lamps, LEDs and Displays Container identifier code, Cd18 Software Revision Number, Cd20 Container Unit Model Number, & configuration database identifier CFMMYYDD are displayed in sequence. Next the unit will indicate the presence or non- presence of an RMU according to whether any RMU inquiry messages have been received since the unit was booted.
  • Page 91 P3-0 Low Speed Evaporator Fan Motors On The low speed evaporator fans start in the off condition and current draw is measured. The low speed evaporator fan contactor is energized and the current draw is measured for 4 seconds. The change in current draw is then recorded.
  • Page 92 P5-9 Primary vs. Secondary Evaporator Pressure Transducer This is a Pass / Fail test of the primary evaporator pressure transducer and secondary evaporator pressure transducer. The test passes if pressure difference between the two pressure transducers is within tolerance as noted below: •...

  • Page 93: Perishable Mode

    P6-7 Evaporator Expansion Valve (EEV) The variable frequency drive (VFD) holds the compressor speed steady while the EEV is closed. Test passes if the pressure variation meets the criteria. P6-8 Economizer Expansion Valve (ECV) After suction pressure is reduced, the compressor is shut off and the valves are closed. When the economizer expansion valve (ECV) opens, the pressure variation is checked.
  • Page 94 Defrost Termination Thermostat (DTT) For the P9 tests, the defrost termination thermostat (DTT) in this control is not a physical device, with actual metallic contacts. It is a software function that acts similar to a thermostat. Using various temperature inputs, the DTT function determines whether a thermostat mounted on the evaporator coil would have OPEN or CLOSED contacts.

  • Page 95: Controller Communications

    4.6 Controller Communications The ML5 controller allows the following methods for connectivity, as shown in Figure 4.5: • Micro USB port allows USB connection to PC for advanced functions • Wireless connection (short-range) capability for remote access via the ContainerLINK™ app •...

  • Page 96: Wireless Connection

    -20°C (-4°F). Connectivity will be intermittent below this temperature. A mobile device can wirelessly connect to the ML5 controller using Carrier’s ContainerLINK™ app, which provides container technicians with access to a suite of tools and resources from one location.

  • Page 97: Figure 4.7 Containerlink - View Real Time Data

    ContainerLINK will also display real time data from the unit in the app when a connection is established. The following components and details can be monitored, see Figure 4.7: • System status including: control mode, operating mode, box temperature, and alarms. •...
  • Page 98 2. On the display, look up the six character wireless password. The password changes every four hours. a. Press the ALT MODE key. b. Use the Arrow keys to display "nEt", then press ENTER. c. Use the Arrow keys to display "PASSW EntR", then press ENTER. d.
  • Page 99 2. Depending on the mobile device, all available networks (along with Container IDs) within range may appear. Choose a Container ID to connect to. See Section 4.6.2.1 for obtaining Container ID. On some mobile devices, this screen is bypassed and the Login screen appears directly. 3.
  • Page 100 4. If a prompt asks to Join the network, select Join. After clicking Connect, a message will appear “Connected to the WIFI Successfully”. Click OK to begin using the connected features of ContainerLINK™. 4.6.2.3 Connecting a Laptop with ContainerLINK to a Unit This procedure explains how to enter wifi settings for a particular container unit into the ContainerLINK app to establish a connection to the unit.
  • Page 101 2. Choose the container unit to connect from the Select SSID box. After selecting, the ID is filled into the Container ID box on the right. Type in the password and click Connect. See Section 4.6.2.1 for container ID and password information. Container ID Password COOL...

  • Page 102: Optional Interrrogator Ports Connection

    4.7.1 DataCORDER Description Carrier Transicold DataCORDER software is integrated into the controller and serves to eliminate the temperature recorder and paper chart. DataCORDER functions are accessed by keypad selections and viewed on the display. The DataCORDER consists of the following components: •...
  • Page 103 The Generic Mode allows user selection of up to eight network data points to be recorded. Changing the configuration to generic and selecting which data points to record may be done using the Carrier Transicold Data Retrieval Program. A list of the data points available for recording follows.

  • Page 104: Datacorder Operational Software

    Table 4–7 DataCORDER Sensor Configurations Standard Config Description 2 sensors (dCF02=2) 2 thermistor inputs (supply & return) 5 sensors (dCF02=5) 2 thermistor inputs (supply & return) 3 USDA thermistor inputs 6 sensors (dCF02=6) 2 thermistor inputs (supply & return) 3 USDA thermistor inputs 1 humidity input 6 sensors (dCF02=54) 2 thermistor inputs (supply &...
  • Page 105 Descriptions of DataCORDER function codes are provided in the following paragraphs. dC1 - Recorder Supply Temperature Current reading of the Supply Recorder Sensor (SRS). dC2 - Recorder Return Temperature Current reading of the Return Recorder Sensor (RRS). dC3 - USDA 1 Temperatures Current readings of the USDA #1 probe.

  • Page 106: Datacorder Power Up

    4.7.4 DataCORDER Power Up The DataCORDER may be powered up in any one of the following methods: 1. Normal AC power: The DataCORDER is powered up when the unit is turned on via the Stop-Start switch. 2. Controller DC battery pack power: If a battery pack is installed, the DataCORDER will power up for communication when the user presses the battery key.

  • Page 107: Operation

    Section 5 Operation 5.1 Inspecting the Unit WARNING Beware of unannounced starting of the evaporator and condenser fans. The unit may cycle the fans and compress or unexpectedly as control requirements dictate. 1. Check inside the unit for the following conditions: •...

  • Page 108: Starting And Stopping Instructions

    5.3 Starting and Stopping Instructions WARNING Make sure that the unit circuit breaker(s) (CB-1 & optional CB-2) and the Start-Stop switch (ST) are in the “O” (OFF) position before connecting to any electrical power source. NOTE: The electronic phase detection system will check for proper compressor rotation within the first 30 seconds.

  • Page 109: Upper Fresh Air Makeup Vent

    5.5.1 Upper Fresh Air Makeup Vent Two slots and a stop are designed into the Upper Fresh Air disc for air flow adjustments. The first slot allows for a 0 to 30% air flow; the second slot allows for a 30 to 100% air flow. To adjust the percentage of air flow, loosen the wing nut and rotate the disc until the desired percentage of air flow matches with the arrow.

  • Page 110: Displaying Pre-Trip Test Results From The Keypad

    3. To Run an Automatic Test: Scroll through the selections by pressing the Arrow keys to display AUtO1, AUtO2 or AUtO3 as desired, then press the ENTER key. • The unit will execute the series of tests without any additional need for user interaction. These tests vary in length, depending on the component under test.

  • Page 111: Probe Disagreement

    In Perishable Mode, both pairs of supply and return probes are monitored for probe disagreement. Probe disagreement is considered a difference of 0.5°C (0.9°F) or greater between the supply air sensors and / or a difference of 2.0°C (3.6°F) between the return air sensors. Probe disagreement found in either pair can trigger a defrost probe check. In Frozen Mode, only the controlling probes are considered.
  • Page 112 NOTE: The expiration interval is the total maximum days allowed between the running of each test. For example, if days are set to 30 and the low speed evaporator fan test has not run within those 30 days, the TripWise expired message will be displayed. If the TripWise expired message is displayed, it is recommended to Pre-Trip the unit following customer specific guidelines prior to the next trip.

  • Page 113: Automatic Setpoint Change (Asc) Mode

    8. The display will show “SPnEW | ##.#°C” with the right display flashing the setpoint for when cold treatment process has completed. Use the Arrow keys to select the setpoint and press ENTER to confirm. COOL HEAT DEFROST IN RANGE ALARM SUPPLY RETURN...

  • Page 114: Pharma Mode

    13. The Cd53 menu is returned to the top level and the display will show “Cd 53 | 0 0“. Upon exiting Cd53 and then returning, the display will now show “Cd 53 | # #“, where the right display is the countdown timer of days and hours remaining.
  • Page 115 4. The CO2 setpoint is displayed. “CO2SP” appears in the left display with the setpoint value blinking in the right display. Use the Arrow keys to change the setpoint and press ENTER to confirm. Or, just press ENTER to keep the originally displayed value. 5.

  • Page 117: Troubleshooting

    Section 6 Troubleshooting Figure 6.1 Unit Troubleshooting Sequence Start Troubleshooting Section 5.2 Connecting Check Power Unit does Power Procedure. self test? Supply Section 5.2 Connecting Check Power Evaporator Power Procedure. Supply fans start? Install Latest Section 7.9 Controller Correct Software software Software Loading Procedure.

  • Page 118: Unit Will Not Start Or Starts Then Stops

    Table 6–1 Troubleshooting Symptoms Condition Possible Cause Remedy / Reference Unit will not Start or Starts then Stops External power source OFF Turn on No power to unit Start-Stop switch (ST) OFF or defective Check Circuit breaker tripped or OFF Check Circuit breaker OFF or defective Check...

  • Page 119: Unit Runs But Has Insufficient Cooling

    Table 6–1 Troubleshooting Symptoms (Continued) Condition Possible Cause Remedy / Reference Unit Runs but has Insufficient Cooling Abnormal pressures Section 6.7 Abnormal temperatures Section 6.13 Abnormal currents Section 6.14 Controller malfunction Section 6.9 Refrigeration system Evaporator fan or motor defective Section 7.6 Compressor service valves or liquid line shutoff valve par- Open valves complete-...

  • Page 120: Figure 3.7 Compressor

    Table 6–1 Troubleshooting Symptoms (Continued) Condition Possible Cause Remedy / Reference Manual defrost switch defective Replace Will not initiate defrost Keypad defective Replace manually Defrost Temperature Sensor (DTS) open Replace Initiates but relay (DR) drops Line voltage is low Section 3.10 Heater contactor or coil defective Replace Initiates but does not defrost...
  • Page 121 Table 6–1 Troubleshooting Symptoms (Continued) Condition Possible Cause Remedy / Reference Microprocessor Malfunction Software and/or controller configuration incorrect Check Sensor defective Section 7.10 Will not control Wiring defective Check Refrigerant charge low 6.10 No Evaporator Air Flow or Restricted Air Flow Coil has frost build-up Section 6.6 Evaporator coil blocked...
  • Page 122 Table 6–1 Troubleshooting Symptoms (Continued) Condition Possible Cause Remedy / Reference 6.13 Abnormal Temperatures Condenser coil dirty Section 7.3 Condenser fan rotating backwards Section 7.3 Condenser fan inoperative Section 7.3 Refrigerant overcharge or non-condensibles Discharge service valve partially closed Open Electronic Expansion Valve (EEV) control malfunction Replace High discharge temperature...

  • Page 123: Section 7 Service

    The manifold gauge set with self-sealing hoses and couplers is required for service of the models covered within this manual. The set is available from Carrier Transicold, part number 07-00294-00 or 07-00294-05 (metric). Hoses are refrigeration and/or evacuation hoses (SAE J2196/R-134a).

  • Page 124: Figure 7.2 Manifold Gauge Set Layout

    The gauge set layout with hoses and couplings is shown in Figure 7.2. The gauge set connects to the service connections on the refrigeration unit using the blue and red hoses. Service connections are described in Section 7.1.3. The yellow hose is a utility connection that can be connected to a a refrigerant cylinder or vacuum pump. Once connected, the following procedures can be performed: •...

  • Page 125: Service Connections

    7.1.2 Evacuating the Manifold Gauge Set If a manifold gauge set is new or was exposed to the atmosphere, it will need to be evacuated to remove contaminants and air. This is done while the gauge set blue and red hoses are not connected to the service connections.

  • Page 126: Connecting The Manifold Gauge Set

    7.1.4 Connecting the Manifold Gauge Set Connection of the manifold gauge set is dependent on the procedure performed or components serviced. For reading system pressures, performing a manual pump down, or checking refrigerant charge, the manifold gauge set connects to the suction service valve (blue hose) and discharge service valve (red hose): •...

  • Page 127: Figure 7.5 Connection For Adding A Partial Charge

    Figure 7.5 Connection for Adding a Partial Charge 1) Manifold Gauge Set 4) Compressor 2) Discharge Service Valve 5) Refrigerant Cylinder 3) Suction Service Valve - - - - - Figure 7.6 Connection for Adding a Full Charge (Liquid) 1) Manifold Gauge Set 4) Compressor 2) Liquid Line Service Valve 5) Refrigerant Cylinder...

  • Page 128: Figure 7.7 Connection For Evacuation And Dehydration

    Figure 7.7 Connection for Evacuation and Dehydration 1) Manifold Gauge Set 5) Compressor 2) Liquid Line Service Valve 6) Vacuum Micron Gauge 3) Discharge Service Valve 7) Refrigerant Recovery System 4) Suction Service Valve 8) Vacuum Pump - - - - - 7.1.4.1 Connect the Manifold Gauge Set to Access Valves 1.

  • Page 129: Checking The Refrigerant Charge

    7.1.5 Reading System Pressures 1. Connect the manifold gauge set to the suction service valve and discharge service valve. Section 7.1.4.1 for procedure to connect to valves. See Figure 7.4 for connection diagram. 2. Make sure both hand valves on the manifold gauge set are fully closed. 3.

  • Page 130: Refrigerant Leak Checking

    Tools Required: • Refrigerant recovery system. Carrier part # 07-00609-00. • Vacuum pump, 2 stage, 3 to 5 cfm capacity. Carrier part # 07-00176-11. • Electronic micron vacuum gauge. Carrier part # 07-00414-00. 7.1.8.1 Preparation 1.
  • Page 131 7.1.8.2 Evacuating and Dehydrating - Complete System 1. Remove all refrigerant using the refrigerant recovery system. First recover liquid refrigerant from the receiver. Then, finish the recovery procedure in vapor mode. Connect a manifold gauge set to a refrigerant recovery system (blue hose), electronic micron gauge (red hose) and a vacuum pump (yellow hose).

  • Page 132: Replacing The Compressor

    To repair the unit, remove the faulty compressor and replace with an approved Carrier compressor. If the return of the compressor is not required, follow local waste collection & recycling regulations in discarding the compressor.

  • Page 133: Figure 7.8 Compressor Base Mounting Hardware

    6. Disconnect the compressor wires on the VFD terminals making a note of the exact wire positions as the replacement compressor will need to be wired using the same connections. 7. Remove the compressor power cable from the conduit connection on the VFD, leaving the power cable attached to the compressor.

  • Page 134: Figure 7.9 Variable Frequency Drive (Vfd)

    18. Replace the filter drier. See Section 7.5.2. 19. Perform a leak check of the system. See Section 7.1.7 20. Evacuate the system to 1000 microns. if the unit was pumped down before the replaced compressor was removed. Otherwise, evacuate the complete unit and charge it with a full charge of refrigerant, as specified on the unit nameplate.
  • Page 135 2. Remove the bracket / guard below the control box for better access to the VFD. Save the mounting hardware. Note: the compressor guard may also need to be removed to gain proper access. 3. Open the VFD service cover to gain access to the wiring. 4.
  • Page 136 5. Remove both conduit connectors and cable assemblies from the VFD. 6. Carefully remove the VFD from the unit back wall by removing and saving the four mounting bolts. 7. Install and wire the new VFD by reversing the above steps 7.2.3 Replacing the Variable Frequency Drive (VFD) Fan The procedure to replace the VFD fan is detailed below.
  • Page 137 4. Remove and save the fan bolt by using a Torx T25 screwdriver. Then, loosen and pull out the fan wire grommet. 5. Remove (pull out) the red and black fan wires from the terminal. This is done by inserting a small flathead screwdriver in the terminal hole above the wire to be removed, followed by a gentle lifting the screwdriver until the terminal jaws open and the wire is free to be pulled out.
  • Page 138 6. Pull up the fan lever lock, located in the bottom back corner. 7. Pull the lower end of the fan assembly radially out. Use a screwdriver to pull out the fan assembly if needed. 8. The replacement fan (part # 10-00560-31) comes with new wire grommet installed. Assemble the replacement VFD fan by reversing the order of the above steps: a.

  • Page 139: Figure 7.10 High Pressure Switch Testing With Nitrogen

    2. Close the valve on the cylinder and open the bleed-off valve. 3. Open the cylinder valve. Slowly close the bleed-off valve to increase pressure on the switch. The switch should open at a static pressure up to 25 kg/cm (350 psig).
  • Page 140 1. Turn the unit start-stop switch (ST) and unit circuit breaker (CB-1) off and disconnect power to the unit. 2. Remove the condenser fan grille. 3. Starting from the top of the coil, use a water hose with a nozzle to wash the coil from the inside out. 4.

  • Page 141: Figure 7.11 Condenser Fan Position

    2. Secure the condenser coil into the unit using the retained hardware; refit the mylar and fender washers: a. Refit the side support bracket bolts. b. Refit the top support bracket bolts as well as the top grille extension support. c.

  • Page 142: Water-Cooled Condenser Cleaning

    7.3.5 Replacing the Condenser Fan Motor 1. Turn the unit start-stop switch (ST) and unit circuit breaker (CB-1) off and disconnect power to the unit. 2. Remove the condenser fan grille. Retain all bolts and washers for reuse. 3. Remove the condenser fan by loosening the two set screws. 4.
  • Page 143 3. Drain water from the condenser tubing circuit. 4. Clean the water tubes with Oakite Aluminum Cleaner® 164 to remove mud and slime. 5. Flush. 6. De-scale the water tubes with Oakite No. 32 to remove scale. 7. Flush. 8. Neutralize. 9.

  • Page 144: Replacing The Filter Drier

    7.5 Filter Drier WARNING Make sure the start/stop switch is OFF, unit circuit breaker (CB-1) is OFF and the power plug disconnected before servicing unit components or moving parts. Follow local lockout / tagout procedures for working on equipment. The filter drier, as shown in Figure 7.12, should be replaced any time the system is opened for service.

  • Page 145: Evaporator Section Cleaning

    HD) for the unit. This will assist in helping to remove the corrosive fumigation chemicals and dislodging of the corrosive elements. This cleaner is available from the Carrier Transicold Performance Parts Group (PPG) and can be ordered through any of the PPG locations; Part Number NU4371-88.

  • Page 146: Figure 7.13 Heater Arrangement

    3. Disconnect the defrost heater wiring. 4. Remove the mounting hardware from the coil. 5. Unsolder the two coil connections, one at the distributor and the other at the coil header. 6. Disconnect the defrost temperature sensor from the coil. See Section 7.10.
  • Page 147 3. Identify the faulty heater(s) for units with a heater access panel: a. Open the access panel and cut out all wire splices to isolate all heaters inside of the unit. b. Repeat the Megger test on each individual heater. Connect the ground clip to the outer metal sheath of the heater and the test clip to one of the wires from the same heater.

  • Page 148: Figure 7.14 Access Panel Torque Pattern

    7.6.4 Replacing the Evaporator Fan Assembly WARNING Make sure the start/stop switch is OFF, unit circuit breaker (CB-1) is OFF and the power plug disconnected before servicing unit components or moving parts. Follow local lockout / tagout procedures for working on equipment. 1.

  • Page 149: Figure 7.15 Expansion Valve (Ecv / Eev)

    7.7 Expansion Valve (ECV / EEV) WARNING Make sure the start/stop switch is OFF, unit circuit breaker (CB-1) is OFF and the power plug disconnected before servicing unit components or moving parts. Follow local lockout / tagout procedures for working on equipment. The expansion valve, as shown in Figure 7.15, is an automatic device that maintains required superheat of the...

  • Page 150: Installing An Expansion Valve (Ecv Or Eev)

    The Electronic Expansion Valve (EEV, as shown in Figure 7.17, maintains superheat of the refrigerant gas leaving the evaporator. The valve functions are: (a) automatic response of refrigerant flow to match the evaporator load and (b) prevention of liquid refrigerant entering the compressor. Figure 7.17 Electronic Expansion Valve (EEV) 7.7.1 Removing an Expansion Valve (ECV or EEV)

  • Page 151: Handling Modules

    1. Obtain a grounding wrist strap (Carrier Transicold P/N 07-00304-00) and a static dissipation mat (Carrier Transicold P/N 07-00277-00). The wrist strap, when properly grounded, will dissipate any potential static buildup on the body.

  • Page 152: Ac Line Filter

    4. Using a Driver Bit, Carrier Transicold part number 07-00418-00, loosen the left hand screw on the battery pack cover then remove the second screw on the outer edge of the battery pack cover.
  • Page 153 Apply power to the container, turn on the ST switch, and verify that 36 VDC is present across pins 1 and 3 on the AC Line Filter. Once input power is verified, check the power on the output of the filter on pins 2 and 4. Input and output voltages should match.
  • Page 154 5. Each individual pin can also be verified between the ground pin #5 and 1, 2, 3, 4. Testing each individual pin to the ground pin should read a capacitance of 0.011 uF +/-10%. Note that meter to left reading in nF but passing value 0.01052 uF.

  • Page 155: Controller Programming Procedures

    8. Connect wires to the power filter using the hot stamping on the wire harness and pin marking on the power filter. Line or Load Wire Filter Line PF5-TRX2 to Pin 5 Line PF3-TRX3 to Pin 3 Line PF1-TRX4 to Pin 1 Load ST5-PF2 to...

  • Page 156: Uploading Controller Software From A Usb Device

    7.9.2 Uploading Controller Software from a USB Device Refer to Carrier’s YouTube Channel to watch a video of this procedure. 1. Turn unit power on (“I”) at the Start-Stop switch (ST). Wait for controller information to be displayed. 2. Insert the Micro USB drive (part # 12-50173-00), pre-loaded with controller software, into the controller Micro USB port.

  • Page 157: Setting The Container Id

    7. The date values are displayed in YYYY MM-DD format. Configure the date using the keypad. • The values will be edited from left to right: the year first (YYYY), then month (MM) and then day (DD). • Press the Arrow keys to increase or decrease a date value. •...

  • Page 158: Preparing An Ice-Water Bath

    7.10.1 Preparing an Ice-Water Bath The ice-water bath is a method for testing the accuracy of sensors by submerging the sensors in an insulated container with ice cubes or chipped ice, then filling voids between ice with water and agitating until mixture reaches 0°C (32°F) measured on a laboratory thermometer.

  • Page 159: Supply And Return Sensor Calibration - Gdp

    1. Remove power from the unit and follow lockout / tagout regulations. 2. Disconnect the harness from the ML5 controller and install the harness tool. 3. Locate the proper wires to be ohmed by referring to the system schematic. 4. Check against the temperature resistance chart provided in Table 9–1 Table 9–2.
  • Page 160 NOTE: Only the latest controller software will allow users to carry out Good Distribution Practice (GDP) calibration. Do not downgrade the software after installing the latest software. NOTE: Before proceeding with the calibration procedure, it is recommended to check the sensors by running pre-trip P5-0.
  • Page 161 GDP Calibration, Removing Return Sensors (RTS / RRS) from Unit: 1. Remove both front access panels from the unit by removing 8 fasteners from each panel. Save all hardware for re-installation. 2. On the right side, disconnect the fan motor wiring, loosen the fastener and remove (slide) the evaporator motor from the unit.
  • Page 162 4. Cut all the wire ties that are securing the sensors to the harness and remove sensor. GDP Calibration, Perform Calibration: WARNING Before powering on the unit, it is important to ensure that all dismantling work is done and tools are away and service personnel are not working on the unit at the time of power on. 1.

  • Page 163: Usda Cold Treatment

    USDA Treatment Manual. In response to the demand to replace fumigation with this environmentally sound process, Carrier has integrated Cold Treatment capability into its microprocessor system. These units have the ability to maintain supply air temperature within one quarter degree Celsius of setpoint and record minute changes in product temperature within the DataCORDER memory, thus meeting USDA criteria.

  • Page 164: Replacing A Sensor

    7. After the sensor readings have stabilized, click the Start Calibration button. Probes are calibrated individually once they are determined to be stable. This calibration generates the probe offsets which, when entered into the controller by the user or automatically depending on how ContainerLINK is configured, are stored in the controller and applied to the USDA sensors for use in generating sensor type reports.

  • Page 165: Installing A Supply Sensor (Sts / Srs)

    6. Slide a large piece of heat shrink tubing over the cable, and place the two small pieces of heat shrink tubing, one over each wire, before adding crimp fittings as shown in Figure 7.20. Figure 7.20 Sensor and Cable Splice 1) Sensor (typical) 3) Cable 2) Large Heat Shrink Tubing (1)

  • Page 166: Installing A Return Sensor (Rts / Rrs)

    Figure 7.21 Supply Sensor (STS / SRS) Supply Air Stream 6mm (1/4”) 1) Sensor Wire 4) Evaporator Back Panel 2) Cap & Grommet Assembly 5) Supply Sensor 3) Probe Holder - - - - - 7.10.8 Installing a Return Sensor (RTS / RRS) Reinstall the Return Temperature or Return Recorder sensor (RTS / RRS), as shown in Figure 7.22.

  • Page 167: Installing A Compressor Discharge Temperature Sensor (Cpds)

    Figure 7.23 Evaporator Temperature Sensor (ETS1 / ETS2) Tube holder and insulation for ETS1 / ETS2. 7.10.11 Installing a Compressor Discharge Temperature Sensor (CPDS) The Compressor Discharge Temperature Sensor (CPDS), see Figure 7.24, monitors refrigerant temperature in the dome of the compressor. Figure 7.24 Compressor Discharge Temperature Sensor (CPDS) CPDS 1.

  • Page 168: Optional Sensors

    7.11 Optional Sensors 7.11.1 Humidity Sensor (HS) The Humidity Sensor (HS) is an optional component that allows setting of a humidity set point in the controller. In dehumidification mode, the controller will operate to reduce internal container moisture level. Figure 7.25 Humidity Sensor (HS) 1) Cap opening (6 cm) 3) Humidity Sensor (HS) 2) Cap hole (3 cm)

  • Page 169: Vent Position Sensor (Vps)

    12. Press the CODE SELECT key on the keypad. 13. Use the Arrow keys until “Cd17” is displayed then press the ENTER key. 14. This displays the humidity sensor reading. Verify the reading is between 60% and 85% relative humidity. 15.

  • Page 170: Everfresh® Service

    To reinitialize the 30 minute installation mode, the battery within the cargo sensor needs to be removed and reinstalled. 3. Press the ALT. MODE key on the keypad. 4. Use the Arrow keys until “dC” is displayed, then press the ENTER key. 5.

  • Page 171: Electrical Schematic And Wiring Diagrams

    Section 8 Electrical Schematic and Wiring Diagrams Legend - Standard Unit T-383...
  • Page 172 Electrical Schematic and Wiring Diagrams Schematic Diagram - Standard Unit T-383...
  • Page 173 Electrical Schematic and Wiring Diagrams Wiring Diagram (Sheet 1) - Standard Unit T-383...
  • Page 174 Electrical Schematic and Wiring Diagrams Wiring Diagram (Sheet 2) - Standard Unit T-383...

  • Page 175: Appendix

    Section 9 Appendix 9.1 Sensor Resistance Tables Table 9–1 Sensor Resistance - AMBS, DTS, ETS, RRS, RTS, SRS, STS °C °F OHMS °C °F OHMS 336,500 42.8 24,173 -38.2 314,773 44.6 23,017 -36.4 294,600 46.4 21,922 -34.6 275,836 48.2 20,886 -32.8 258,336 19,900...

  • Page 176: Table 9-2 Sensor Resistance - Cpds

    Table 9–2 Sensor Resistance - CPDS °C °F OHMS °C °F OHMS 849,822 64.4 136,705 -36.4 834,450 68.0 124,876 -32.8 819,079 71.6 114,101 -29.2 803,707 75.2 104,352 -25.6 788,336 100,000 -22.0 772,964 78.8 95,585 -18.4 757,593 82.4 87,619 -14.8 742,221 83.0 80,447 -11.2...

  • Page 177: Refrigerant Pressure Temperature Charts

    9.2 Refrigerant Pressure Temperature Charts Table 9–3 R-134a Refrigerant Pressure Temperature Chart Note: Underline figures are inches of mercury vacuum °F °C PSIG °C °F -40.0 14.8 -40.0 -0.49 -38.9 13.9 -38.2 -0.46 -37.8 13.0 -36.4 -0.43 -36.7 12.0 -34.6 -0.40 -35.6 10.9...
  • Page 178 Table 9–3 R-134a Refrigerant Pressure Temperature Chart Note: Underline figures are inches of mercury vacuum °F °C PSIG °C °F 18.9 65.4 55.4 3.58 20.0 68.2 57.2 3.73 21.1 71.1 59.0 3.88 22.2 74.1 60.8 4.04 23.3 77.1 62.6 4.21 24.4 80.2 64.4...

  • Page 179: Table 9-4 R-513A Refrigerant Pressure Temperature Chart

    Table 9–4 R-513A Refrigerant Pressure Temperature Chart Note: Underline figures are inches of mercury vacuum °F °C PSIG °C °F -40.0 -40.0 -0.32 -38.9 -38.2 -0.28 -37.8 -36.4 -0.25 -36.7 -34.6 -0.21 -35.6 -32.8 -0.17 -34.4 -31.0 -0.13 -33.3 -29.2 -0.09 -32.2 -27.4...
  • Page 180 Table 9–4 R-513A Refrigerant Pressure Temperature Chart Note: Underline figures are inches of mercury vacuum °F °C PSIG °C °F 18.9 78.7 55.4 4.39 20.0 81.8 57.2 4.56 21.1 85.0 59.0 4.73 22.2 88.2 60.8 4.91 23.3 91.6 62.6 5.09 24.4 95.0 64.4...

  • Page 181: Bolt Torque Values

    9.3 Bolt Torque Values Table 9–5 Recommended Bolt Torque Values (Dry, Non-Lubricated for 18-8 Stainless Steel) Bolt Diameter Threads In-Lbs Ft-Lbs Free Spinning 5/16 14.9 27.1 7/16 58.3 9/16 77.3 1104 124.7 1488 168.1 Non Free Spinning (Locknuts etc.) 82.5 5/16 145.2 12.1...

  • Page 183: Eu Declaration Of Conformity

    Serial Number: Manufacturing Date: __________-__________ ___________ We, manufacturer: Carrier Transicold Pte Ltd 251 Jalan Ahmad Ibrahim Singapore 629146 Declare, under our sole responsibility, that the OptimaLINE Container Unit: Model: 69NT40-701 is in conformity with the provisions of the following European Directives: •...

  • Page 185: Wireless Certification

    Section 11 Wireless Certification Product name: Micro-Link 5 Controller Model name: ML5 Manufacturer: UTEC for Carrier Transicold Pte. Ltd Made in China CMIIT ID: XXXXXXXXXX IC: 703A-MICROLINK5 FCC ID: KC Number: Anatel Number: 2AK6N-MICROLINK5 R-C-Ctd-ML5 04787-19-12327 CCAJ19LP5180T0 R 018-190082 TA-2019/684 This device complies with Part 15 of the FCC Rules.
  • Page 186 China RoHS per SJ/T 11364-2014 产品中有害物质的名称及含量 有害物质 铅 汞 镉 六价铬 多溴联苯 多溴二苯醚 部件名称 (Pb) (Hg) (Cd) (Cr (VI)) (PBB) (PBDE) 金属板部件 塑料部件 盘管组件 加热部件 马达，压缩机与风扇组件 温度控制微处理器系统 断路器与接触器 变压器 传感器 通讯组件 阀组件 电缆线/电源 电池 标签与绝缘材料 玻璃部件 本表格依据 SJ/T 11364 的规定编制。 O：表示该有害物质在该部件所有均质材料中的含量均在...

  • Page 187: Index

    Index Numerics Ambient Temperature Sensor (AMBS) Description 3– 460 Volt Cable 2–3 Automatic Cold Treatment (ACT) Mode 5–6 Automatic Setpoint Change (ASC) Mode 5–7 Air Stream Sensors Descriptions 3–18 AL003 4–22 Back Panels 2–3 AL012 4–23 Battery 2–2 7–29 AL013 4–23 AL015 4–23 AL017 4–23 Cable Restraint 2–3...
  • Page 188 Cd65 4–13 dC04 4–59 Cd66 4–13 dC05 4–59 Cd67 4–13 dC14 4–59 Cd70 4–14 dC22 4–59 Cd71 4–14 dC23 4–59 Cd72 4–14 dC24 4–59 Cd73 4–14 dC28 4–59 Cd74 4–15 dC29 4–59 Cd75 4–15 dC30 4–59 Cd76 4–15 dC31 4–59 Cd77 4–15 dC32 4–59 Cd78 4–16...
  • Page 189 Evaporator Fan Operation 2–2 Evaporator Fans Location 3–3 Manifold Gauge Set 7–1 Evaporator Pressure Transducer (EPT) Description 3– Manifold Gauge Set Evacuate 7–3 Manifold Gauge Set Remove 7–6 Evaporator Section Description 3–3 Manifold Gauge Set, Connect 7–4 Evaporator Temperature Sensor (ETS1/2) Description Micro-Link 5 Microprocessor 4–1 3–17 Microprocessor 4–1...
  • Page 190 Pressure Readout 2–2 Pre-Trip Diagnosis 5–3 Upper Air 2–3 Probe Check 4–19 Upper Fresh Air Makeup Vent 2–3 5–3 Probe Diagnostics 5–4 USDA 2–3 Push Button Switches 4–2 USDA and Cargo Probes 3–21 USDA Cold Treatment 7–41 USDA Probes Description 3–21 Receiver Description 3–9 USDA Probes Location 3–3 Receiver Location 3–3...
  • Page 192 Carrier Transicold Division, Carrier Corporation P.O. Box 4805 Syracuse, NY 13221 USA www.carrier.com/container-refrigeration/...

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