Carrier TRANSICOLD PrimeLINE 69NT40-571 Operation And Service Manual
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Carrier TRANSICOLD PrimeLINE 69NT40-571 Operation And Service Manual

Container refrigeration units
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Container Refrigeration
OPERATIONS AND SERVICE
MANUAL
For
PrimeLINE
69NT40-571-100 to 199
Container Refrigeration Units
T-372 Rev E

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Summary of Contents for Carrier TRANSICOLD PrimeLINE 69NT40-571

  • Page 1 Container Refrigeration OPERATIONS AND SERVICE MANUAL PrimeLINE 69NT40-571-100 to 199 Container Refrigeration Units T-372 Rev E...
  • Page 2 OPERATIONS AND SERVICE MANUAL PrimeLINE 69NT40-571-100 to 199 Container Refrigeration Units This manual is also available in Carrier’s ContainerLINK™ app. ContainerLINK can be downloaded by scanning the QR code below. ContainerLINK provides technicians with access to a suite of tools and resources from one location. ©...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS PARAGRAPH NUMBER PAGE 1 SAFETY SUMMARY ..............1–1 GENERAL SAFETY NOTICES .
  • Page 4 3.1.5 Fresh Air Makeup Vent ........... . . 3–5 3.1.6 Evaporator Section .
  • Page 5 5.2.2 Connecting to 190/230 VAC Power ......... . . 5–1 ADJUSTING FRESH AIR MAKEUP VENT .
  • Page 6 7.4.2 Manual Pump Down ............7–4 REFRIGERANT LEAK CHECKING .
  • Page 7 7.20.3 Removing an ESV Coil ........... . 7–23 7.20.4 Installing an ESV Coil .
  • Page 9 LIST OF ILLUSTRATIONS FIGURE NUMBER Page Figure 3.1 Refrigeration Unit - Front Section ..........3–1 Figure 3.2 Compressor .
  • Page 10 Figure 7.16 Economizer Expansion Valve (EXV) ..........7–24 Figure 7.17 Adapter and O-Ring .
  • Page 11 LIST OF TABLES TABLE NUMBER Page Table 3–1 Refrigeration System Data ............3–8 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 The statements listed below are applicable to the refrigeration unit and appear elsewhere in this manual. These recommended precautions must be understood and applied during operation and maintenance of the equipment covered herein. WARNING EXPLOSION HAZARD: Failure to follow this WARNING can result in death, serious personal injury and / or property damage.
  • Page 15 WARNING Wear rubber gloves and wash the solution from the skin immediately if accidental contact occurs. Do not allow the solution to splash onto concrete. WARNING Always turn OFF the unit circuit breakers (CB-1 & CB-2) and disconnect main power supply before working on moving parts.
  • Page 16 CAUTION Allowing the scroll compressor to operate in reverse for more than two minutes will result in internal compressor damage. Turn the Start-Stop switch OFF immediately. CAUTION To prevent trapping liquid refrigerant in the manifold gauge set, make sure set is brought to suction pressure before disconnecting.

  • Page 17: Introduction

    18 and 24 volts, single phase. The controller is a Carrier Transicold Micro-Link 5 microprocessor. The controller operates automatically to select cooling, holding or heating as required to maintain the desired set point temperature within very close limits. The unit may also be equipped with an electronic temperature recorder.

  • Page 18: Condenser Coil

    2.4.5 Condenser Coil The unit is fitted with a micro channel heat exchanger condenser coil. 2.4.6 Evaporator The evaporator section is equipped with an evaporator coil and electronic expansion valve (EEV). 2.4.7 Evaporator Fan Operation Units are equipped with three-phase evaporator fan motors. Opening of an evaporator fan internal protector will shut down the unit.

  • Page 19: Volt Cable

    Safety Instruction and Function Code listing labels differ depending on the options installed. Labels available with additional languages are listed in the parts list. 2.5.13 Controller The controller is a Carrier Transicold Micro-Link 5 microprocessor. See Section 4.1 for more information.

  • Page 20: Tripwise

    2.5.17 TripWise TripWise™ is a new premium option available for PrimeLINE units. TripWise is software logic that runs in the background during every voyage and will let you know whenever a standard pre-trip inspection (PTI) is needed. Section 5.9.3 for more detail. 2.5.18 FuelWise FuelWise™...

  • Page 21: Description

    Section 3 Description 3.1 General Description 3.1.1 Refrigeration Unit - Front Section The unit is designed so that the majority of the components are accessible from the front, see Figure 3.1. The unit model number, serial number and parts identification number can be found on the unit nameplate on the back wall of the condenser section.

  • Page 22: Compressor Section

    3.1.2 Compressor Section The compressor, see Figure 3.2, 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, see Figure 3.3, includes the following components: compressor, digital unloader valve (DUV), high pressure switch (HPS), discharge pressure transducer (DPT), evaporator pressure transducer (EPT) and the suction pressure transducer (SPT).

  • Page 23: Air-Cooled Condenser Section

    3.1.3 Air-Cooled Condenser Section The air-cooled condenser removes latent heat from the refrigerant gas by using a condenser fan, see Figure 3.4, to blow air across the condenser coil fins and tubes to cool the gas to saturation temperature. The condenser fan pulls air from around the coil and discharges it horizontally through the condenser fan grille.

  • Page 24: Figure 3.6 Condenser Section For Pids > Nt3100 (Aluminum Receiver)

    Figure 3.6 Condenser Section for PIDs > NT3100 (Aluminum Receiver) Receiver Assembly Economizer Assembly 1) Condenser Coil, Microchannel Heat Exchanger (MCHE) 4) Service Access Valve 2) Receiver (aluminum) with: a) sight glass, 5) Economizer b) moisture indicator and c) fusible plug 6) Economizer Solenoid Valve (ESV) 3) Filter Drier 7) Economizer Expansion Valve (EXV)

  • Page 25: Water-Cooled Condenser Section

    3.1.4 Water-Cooled Condenser Section The unit may contain a brazed plate water-cooled condenser (WCC) installed as an option. When operating on the water-cooled condenser, the condenser fan is deactivated by a water pressure switch or condenser fan switch. The WCC, see Figure 3.7, consists of a brazed plate water-cooled condenser, water couplings and a water pressure switch.

  • Page 26: Evaporator Section

    3.1.6 Evaporator Section The evaporator section is shown in Figure 3.9. The evaporator fans circulate air through the container by pulling it into the top of the unit, directing it through the evaporator coil to be heated or cooled, and discharging it at the bottom. Most evaporator components are accessible by removing the upper rear panel or by removing the evaporator fan access panels.

  • Page 27: Control Box Section

    3.1.7 Control Box Section The control box, see Figure 3.10, includes the manual operation switches, circuit breaker (CB-1), compressor, fan and heater contactors, control power transformer, transformer AC line filter, fuses, keypad, display module, current sensor module, and the controller module. Figure 3.10 Control Box Section 1) Compressor Contactor (CH) 8) Current Sensor Module...

  • Page 28: Refrigeration System Data

    3.2 Refrigeration System Data Table 3–1 Refrigeration System Data Compressor / Motor Assembly Model Number ZMD26KVE-TFD-272 Weight (With Oil) 42.9 kg (95 lb) Approved Oil Uniqema Emkarate RL-32-3MAF Oil Charge 1774 ml (60 ounces) Electronic Expansion Valve Verify at - 18°C (0°F) 4.4 to 6.7°C (8 to 12°F) Superheat (Evaporator) container box temperature...
  • Page 29 Table 3–2 Electrical Data (Continued) Condenser Fan Motor Nominal Supply 380 VAC / 3 Phase / 50 Hz 460 VAC / 3 Phase / 60 Hz Full Load Amps 0.71 amps 0.72 amps Horsepower 0.21 hp 0.36 hp Rotations Per Minute 1450 rpm 1750 rpm Voltage and Frequency...

  • Page 30: Safety And Protective Devices

    Table 3–2 Electrical Data (Continued) Humidity Sensor Orange wire Power Red wire Output Brown wire Ground Input voltage 5 VDC Output voltage 0 to 3.3 VDC Output voltage readings verses relative humidity (RH) percentage: 0.99 V 1.65 V 2.31 V 2.97 V Controller Setpoint Range...

  • Page 31: Refrigeration Circuit

    3.5 Refrigeration Circuit 3.5.1 Standard Operation Figure 3.11 for Circuit Diagram of Standard Operation Figure 3.13 for Circuit Diagram of Standard Operation with Water-Cooled Condenser Starting at the compressor, the suction gas is compressed to a higher pressure and temperature. The refrigerant gas flows through the discharge line and continues into the air-cooled condenser.

  • Page 32: Figure 3.11 Refrigeration Circuit Diagram - Standard Operation

    Figure 3.11 Refrigeration Circuit Diagram - Standard Operation Discharge Liquid Saturated Suction Vapor Mixture Vapor 1) Compressor 13) Economizer Solenoid Valve (ESV) 2) Discharge Service Valve 14) Economizer Expansion Valve (EXV) 3) High Pressure Switch (HPS) 15) Economizer Expansion Valve (EXV) Sensing Bulb 4) Discharge Pressure Transducer (DPT) 16) Economizer Connection 5) Condenser...

  • Page 33: Figure 3.12 Refrigeration Circuit Diagram - Economized Operation

    Figure 3.12 Refrigeration Circuit Diagram - Economized Operation Discharge Liquid Saturated Suction Vapor Mixture Vapor 1) Compressor 13) Economizer Solenoid Valve (ESV) 2) Discharge Service Valve 14) Economizer Expansion Valve (EXV) 3) High Pressure Switch (HPS) 15) Economizer Expansion Valve (EXV) Sensing Bulb 4) Discharge Pressure Transducer (DPT) 16) Economizer Connection 5) Condenser...

  • Page 34: Figure 3.13 Refrigeration Circuit Diagram - Water-Cooled Condenser

    Figure 3.13 Refrigeration Circuit Diagram - Water-Cooled Condenser Discharge Liquid Saturated Suction Vapor Mixture Vapor 1) Compressor 15) Filter Drier 2) Discharge Service Valve 16) Economizer 3) High Pressure Switch (HPS) 17) Economizer Solenoid Valve (ESV) 4) Discharge Pressure Transducer (DPT) 18) Economizer Expansion Valve (EXV) 5) Condenser 19) Economizer Expansion Valve (EXV) Sensing Bulb...

  • Page 35: Microprocessor

    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 36: Display Module And Keypad

    4.1.2 Display Module and Keypad The display module and keypad, see 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 37: Controller Software

    Table 4–2 Keypad Function Function CODE Access function codes. SELECT Display Pre-Trip selection menu. TRIP Discontinue a Pre-Trip in progress. If TripWise is enabled, display a current TripWise status message. ALARM Display alarm list and clear alarm queue. LIST MANUAL Display selected defrost mode.

  • Page 38: Configuration Software (Cnf Variables)

    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. Changes to the configuration software are required only when a new controller has been installed or a physical change has been made to the unit such as the addition or removal of an option.

  • Page 39: Table 4-3 Controller Function Codes (Cd) - Summary

    Table 4–3 Controller Function Codes (Cd) - Summary Code Description Code Description Cd36 Evaporator Fan Speed Cd01 Capacity Modulation (%) Cd37 Variable DTT Setting (Bulb Mode) Cd03 Compressor Motor Current Cd38 Supply Temperature Sensor Cd04 Line Current, Phase A Cd39 Return Temperature Sensor Cd05 Line Current, Phase B...

  • Page 40: Table 4-4 Controller Function Codes (Cd) - Descriptions

    Table 4–4 Controller Function Codes (Cd) - Descriptions Code Description Display Only Functions - Cd01 through Cd26 are display only functions. Cd01 Capacity Modulation (%) Cd01 displays the DUV percent closed. The right display reads 100% when the valve is fully closed. The valve will usually be at 10% on start up of the unit except in very high ambient temperatures.
  • Page 41 Table 4–4 Controller Function Codes (Cd) - Descriptions Code Description Cd17 Relative Humidity (%) Cd17 displays the Humidity Sensor (HS) reading, as a percent value. Cd18 Software Revision Number Cd18 displays the software revision number. Cd19 Backup Battery Check Cd19 runs a backup battery test and also displays results. After selecting Cd19, press the ENTER key while “btESt”...
  • Page 42 Table 4–4 Controller Function Codes (Cd) - Descriptions Code Description Configurable Functions - Cd27 through Cd37 are user-selectable functions. Cd27 Defrost Interval (Hours or Automatic) Cd27 controls the Defrost Timer Interval, which is the desired period of time between defrost cycles. The user- selected intervals are 2, 3, 6, 9, 12, 24 Hours, Off, AUTO, AUTO2, or AUTO3.
  • Page 43 Table 4–4 Controller Function Codes (Cd) - Descriptions Code Description 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 44 Table 4–4 Controller Function Codes (Cd) - Descriptions Code Description Cd37 Variable DTT Setting (Bulb Mode) Cd37 displays the variable Defrost Termination Thermostat (DTT) setting to be used with the optional Bulb Mode functionality. This item is only displayed if the Bulb Mode option is configured on. The temperature at which the DTT will be considered “open”...
  • Page 45 Table 4–4 Controller Function Codes (Cd) - Descriptions Code Description Configurable Functions - Cd45 through Cd48 are user-selectable functions. Cd45 Vent Position Sensor (VPS) Position Cd45 displays positional values for the Vent Position Sensor (VPS). Values are: 0 to 240. If a unit is not configured for a VPS, dashes “-----”...
  • Page 46 Table 4–4 Controller Function Codes (Cd) - Descriptions Code Description Display Only Function - Cd49 is a display only function. Cd49 Days Since Last Successful Pre-Trip Cd49 displays the number of days since the last successful pre-trip sequence. Press the ENTER key to view the number of days since the last successful pre-trip for AUTO1, AUTO2, and AUTO3 in sequence.
  • Page 47 Table 4–4 Controller Function Codes (Cd) - Descriptions Code Description Cd51 Automatic Cold Treatment (ACT) Mode Parameter Selection Cd51 controls the Automated Cold Treatment (ACT) Mode option, which is a method to simplify the task of completing cold treatment by automating the process of changing the setpoints. Cold treatment is an effective post-harvest method to control Mediterranean and certain other tropical fruit flies.
  • Page 48 Table 4–4 Controller Function Codes (Cd) - Descriptions Code Description Cd53 Automatic Setpoint Change (ASC) Mode Parameter Selection Cd53 controls the Automated Setpoint Change (ASC) Mode option, which allows up to 6 setpoint changes to be pre-programmed over defined periods. If the unit is not configured for ASC, then this will not be allowed and Cd53 will display dashes “-----”.
  • Page 49 Table 4–4 Controller Function Codes (Cd) - Descriptions Code Description Cd56 Enable Comms Mode Cd56 is only active for specific model number units that disable access to the USB port or Rear Interrogation port. Cd56 will allow access to these ports for a period of one hour. For all other model number units that allow access to the USB and Rear Interrogation ports, Cd56 will display dashes “-----”.
  • Page 50 Table 4–4 Controller Function Codes (Cd) - Descriptions Code Description Cd63 FuelWise Cd63 controls FuelWise Mode, which is an option that saves energy while operating in the perishable setpoint range. When operating in the frozen setpoint range, Frozen Economy Mode complements FuelWise. Note: FuelWise was previously referred to as Enhanced Economy Mode.
  • Page 51 Table 4–4 Controller Function Codes (Cd) - Descriptions Code Description Display Only Functions - Cd66 through Cd67 are display only functions. Cd66 Instantaneous Power (kW) Cd66 displays real power (in kW) currently being used by the system. Cd67 Energy (kW-hr) Cd67 displays energy used by the system, in kW-hrs, since the last Trip Start.
  • Page 52 Table 4–4 Controller Function Codes (Cd) - Descriptions Code Description Cd75 Pharma Mode Cd75 controls the Pharma Mode option, which 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 an available option for units that have installed software versions 5381 or higher and a humidity sensor that has not been disabled.

  • Page 53: Modes Of Operation

    4.3 Modes of Operation General operation sequences for cooling, heating and defrost are provided in the following sub-sections. Operational software responds to various inputs. These inputs come from the temperature sensors and pressure transducers, the temperature setpoint, the settings of the configuration variables and the function code assignments.

  • Page 54: Figure 4.3 Perishable Mode - Cooling And Heating Chart

    4.3.2.3 Perishable Idle / Air Circulation When it is unnecessary to run the compressor to maintain control temperature, the system enters Perishable Idle Mode. The controller has determined that cooling is not required or the controller logic determines suction pressure is at the low pressure limit.

  • Page 55: Figure 4.4 Perishable Mode Cooling Schematic

    4.3.2.6 Perishable Mode Cooling - Sequence of Operation NOTE In Standard Perishable Mode, the evaporator motors run in high speed. In Economy Fan Mode, the fan speed is varied. a. When supply air temperature is above setpoint and decreasing, the unit will cool with the condenser fan motor (CF), compressor motor (CH), and evaporator fan motors (EF) energized, and the white COOL light illuminated.

  • Page 56: Perishable Mode - Modes And Options

    4.3.2.7 Perishable Mode Heating - Sequence of Operation a. If the supply air temperature decreases 0.5°C (0.9°F) below setpoint, the system enters the Heating Mode The controller closes contacts TH, see Figure 4.5, to allow power flow through the heat termination thermostat (HTT) to energize the heaters (HR).
  • Page 57 If the above conditions are true for at least one hour, the evaporator fans will switch from high speed to low speed. Evaporator fan speed will then switch every hour, as long as the four conditions are met. See Bulb mode, Section 4.3.3.2, for different evaporator fan speed options.
  • Page 58 4.3.3.4 QUEST or QUEST II Mode QUEST is a power saving option that reduces energy requirements. Quest is a method of temperature control used during Perishable Steady State cooling that cycles the compressor on and off according to return air temperature. Code Cd50 enables/disables QUEST or QUEST II (additional savings over QUEST), depending on which option...

  • Page 59: Frozen Mode Temperature Control

    4.3.4 Frozen Mode Temperature Control Frozen mode is active with any setpoint entered on the unit display that is below either -10°C (+14°F) or -5°C (+23°F). This is dependent on the setting chosen in configuration variable Heat Lockout Temperature. In Frozen Mode, the controller maintains the return air temperature at setpoint, the yellow RETURN indicator light is illuminated, and the default reading on the display window is the return temperature sensor (RTS).

  • Page 60: Frozen Mode - Modes And Options

    4.3.4.5 Frozen Mode Cooling - Sequence of Operation a. When the return air temperature is above setpoint and decreasing, the unit will transition to economized cooling with the condenser fan motor (CF), compressor motor (CH), economizer solenoid valve (ESV), low speed evaporator fan motors (ES) energized and the white COOL light illuminated.

  • Page 61: Defrost

    4.3.6 Defrost Defrost is initiated to remove ice buildup from the evaporator coil which can obstruct air flow and reduce the cooling capacity of the unit. The defrost cycle may consist of up to three distinct operations depending upon the reason for the defrost or model number configuration.

  • Page 62: Defrost Related Settings

    When defrost is initiated, the controller closes the EEV, opens contacts TC, TN and TE (or TV) to de-energize the compressor, condenser fan and evaporator fans. The controller then closes contacts TH to supply power to the heaters. The orange DEFROST light and HEAT light are illuminated and the COOL light is also de-energized. Figure 4.8 Defrost Schematic ENERGIZED DE-ENERGIZED...

  • Page 63: Controller Alarms

    4.3.9.3 Generator Protection Function codes Cd31 (Stagger Start, Offset Time) and Cd32 (Current Limit) may be operator set to control the start up sequence of multiple units and operating current draw. The factory default allows on demand starting (no delay) of units and normal current draw.
  • Page 64 Procedure to Display Alarm Codes: 1. While in the default display mode, press the ALARM LIST key, then use the Arrow keys to scroll any alarms archived in the alarm queue. The alarm queue stores up to 64 alarms in the sequence in which they occurred.

  • Page 65: Table 4-5 Alarm Indications - Summary

    Table 4–5 Alarm Indications - Summary Code Description Code Description AL263 Exceed Current Limit Setting AL003 Loss of Superheat Control AL264 Discharge Temperature Sensor (CPDS) AL017 Compressor Pressure Delta Fault Fault AL020 Control Fuse (F3 / F4) Open AL265 Discharge Pressure Transducer (DPT) Fault AL021 Control Fuse (F1 / F2) Open AL266...

  • Page 66: Table 4-6 Alarm Indications - Descriptions

    Table 4–6 Alarm Indications - Descriptions AL003 Loss of Superheat Control Cause: Superheat has remained below 1.66°C (3°F) degrees for five minutes continuously while compressor running. Compressor drawing more than 2.0 amps, compressor pressure ratio is greater than 1.8, and Electronic Expansion Valve (EEV) is at 0% open.
  • Page 67 Table 4–6 Alarm Indications - Descriptions AL021 Control Fuse (F1 / F2) Open Cause: One of the 18 VAC controller fuses (F1 or F2) is open. See Cd08. Component System Sensors Troubleshooting Check system sensors for short to ground. Corrective Action Replace defective sensor(s). Component Wiring Troubleshooting Check wiring for short to ground.
  • Page 68 Table 4–6 Alarm Indications - Descriptions AL026 All Supply / Return Probes Failure Cause: Sensors out of range. Component All sensors detected as out of range. Troubleshooting Perform pre-trip P5. Corrective Action If P5 passes, no further action is required.If P5 fails, replace the defective sensor as determined by P5.
  • Page 69 Table 4–6 Alarm Indications - Descriptions Component Sensors Troubleshooting Run Pre-Trip test P5 to test the Return Recorder Sensor (RRS), Return Temperature Sensor (RTS) or Defrost Temperature Sensor (DTS). If any sensor fails, then replace. If all sensors pass, then check the compressor. Component Compressor Troubleshooting Check to see why the compressor is over-shooting setpoint temperature.
  • Page 70 Table 4–6 Alarm Indications - Descriptions Component Current Sensor Troubleshooting Check Cd41, the right-most digit. If the display is 3 or 4, check compressor / sensor wiring. If the display is 5, the current sensor is defective. Corrective Action Replace the current sensor if defective. AL216 Compressor Current High Cause: Compressor current draw is over the calculated maximum for 10 minutes.
  • Page 71 Table 4–6 Alarm Indications - Descriptions AL219 Discharge Temperature High Cause: Discharge temperature exceeds 135°C (275°F) for 10 minutes within the last hour. Component Restrictions in the refrigeration system. Troubleshooting Ensure the discharge service valve is fully open. Check the unit for air flow restrictions.
  • Page 72 Table 4–6 Alarm Indications - Descriptions AL254 Primary Supply Temperature Sensor (STS) Fault Cause: Invalid Supply Temperature Sensor (STS) reading. Component Supply Temperature Sensor (STS) Troubleshooting Perform pre-trip P5. Corrective Action If P5 passes, no further action is required. If P5 fails, replace the defective sensor as determined by P5.
  • Page 73 Table 4–6 Alarm Indications - Descriptions AL261 Improper Heater Current Fault Cause: Improper current draw during heat or defrost mode. Component Heater(s) Troubleshooting While in heat or defrost mode, check for proper current draw at heater contactors. See Electrical Data, Section 3.3.
  • Page 74 Table 4–6 Alarm Indications - Descriptions AL267 Humidity Sensor (HS) Fault Cause: Humidity Sensor (HS) reading out of range. Component Humidity Sensor (HS) Troubleshooting Make sure the HS is properly connected in the socket. Make sure the HS wires have not been damaged.
  • Page 75 Table 4–6 Alarm Indications - Descriptions AL275 Cargo Probe 4 Out of Range Cause: Cargo Probe 4 Sensor is out of range. Component Sensor Troubleshooting Validate sensor values. Follow the Sensor checkout procedure. See Section 7.28. Corrective Action If the sensor is bad, replace. If not, verify harness wiring and controller connections. AL286 RTC Battery Low Cause: RTC Battery output low.
  • Page 76 Table 4–6 Alarm Indications - Descriptions Component O2 Sensor, O2 Amplifier Troubleshooting Check Cd44 and scroll down to 02V. The O2 sensor output will be displayed in millivolts (130mV to 4100mV is a good range). Check wiring (See schematic), and check for bad connections or wires improperly positioned.
  • Page 77 Table 4–6 Alarm Indications - Descriptions Component EverFRESH Air Valve (EA) Troubleshooting A closed or plugged EA solenoid could prevent fresh air from entering the container. P20-2 tests the valve. Potential failure results: • MPT pressure fails to change when the valve is energized. Check for signs of blockage in the valve or piping.
  • Page 78 Table 4–6 Alarm Indications - Descriptions 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 With the EverFRESH system off for 15 minutes, bring up function code Cd44...
  • Page 79 Table 4–6 Alarm Indications - Descriptions AL981 Water Drain Valve (WDV) Fault Cause: When the system energizes the Water Drain Valve (WDV) 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 the EverFRESH Air Valve (EA) is opened.

  • Page 80: Auto Mode And Manual Mode

    Table 4–6 Alarm Indications - Descriptions ERR 8-DataCORD- Internal DataCORDER memory failure. ER failure ERR 9-Controller Internal controller memory failure. failure Entr Enter Set point (Press Arrow & Enter) StPt Cause: The controller is prompting the operator to enter a setpoint. Low Main Voltage (Function Codes Cd27-38 disabled and No alarm stored.) Cause: This message will be alternately displayed with the setpoint whenever the supply voltage is less than 75% of its proper value.

  • Page 81: Pre-Trip Inspection Termination

    4.5.3 Pre-Trip Inspection Termination Pre-Trip inspection is terminated if any of the following scenarios occur: • After selecting the PRE-TRIP key, no selection is made after five seconds. The system will resume normal operations. • While tests are being executed, press and hold the PRE-TRIP key for 1 to 2 seconds. The system will resume normal operations.
  • Page 82 Table 4–7 Controller Pre-Trip Test Codes (Continued) P3-1 Low Speed Evaporator Fan Motors Off Low speed evaporator fans are then turned off. After 10 seconds the current draw is measured. The change in current draw is then recorded. Test passes if change in current draw test is in the specified range. P4 - High Speed Evaporator Fans Current Draw: For P4 test, the high speed evaporator fans are turned on, then off.
  • Page 83 Table 4–7 Controller Pre-Trip Test Codes (Continued) P5-7 Primary vs. Secondary Evaporator Temperature Sensor Test This is a Pass/Fail test of the primary evaporator temperature sensor (ETS1) and secondary evaporator temperature sensor (ETS2). Test passes if secondary evaporator temperature sensor (ETS2) is within +/- 0.5°C of the primary evaporator temperature sensor (ETS1).
  • Page 84 Table 4–7 Controller Pre-Trip Test Codes (Continued) P6-5 Compressor Leak Test Pre-trip P6-5 ensures that the compressor holds pressure. After compressor pump up and pump down, the compressor is turned off for 62 seconds. When suction side pressure holds (less than 8 psi rise) for 10 seconds, P6-5 passes, otherwise the Compressor Leak Test fails.
  • Page 85 Table 4–7 Controller Pre-Trip Test Codes (Continued) P8 - Perishable Mode Tests: In order for P8 tests to execute, Pre-trip tests P7-0 and P7-1 must have passed or have been skipped. P8 tests are included with “Auto2 & Auto3” only. P8-0 Perishable Mode Test If the control temperature is below 15.6°C, the setpoint is changed to 15.6°C, and a 180 Minute timer is started.
  • Page 86 Table 4–7 Controller Pre-Trip Test Codes (Continued) P10 - Frozen Mode Tests: P10 tests are included with “Auto2” only. P10-0 Frozen Mode Heat Test If the container temperature is below 7.2°C, the setpoint is changed to 7.2°C, and a 180 Minute timer is started. The control will then be placed in the equivalent of normal heating.

  • Page 87: Controller Communications

    4.6 Controller Communications The ML5 controller allows the following methods for connectivity (see Figure 4.9): • Micro USB port allows USB connection to PC for advanced functions • Wireless connection (short-range) capability for remote access via the ContainerLINK™ app • Optional interrogator receptacles for probe calibration and third party device connectivity.

  • Page 88: Wireless Connection

    4.6.2 Wireless Connection The ML5 controller offers short range wireless connectivity through wireless 802.11 b/g/n. Wireless connectivity may only operate when ambient temperatures are above -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 89: Figure 4.11 Containerlink - View Real Time Data

    Figure 4.11 ContainerLINK - View Real Time Data System Status System Values 4.6.2.1 Obtaining Container Unit ID and Wireless Password This procedure explains how to use the unit display to determine the container unit ID and wifi password. These are needed to connect to the ContainerLINK™ app. Procedure: 1.
  • Page 90 4.6.2.2 Connecting a Phone 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. 1. Open the ContainerLINK™ app and navigate to the Container screen, then the Wi-Fi Settings screen. 2.
  • Page 91 3. At the Login screen, enter or verify the Container ID and Password and select Connect. The values may be inputted automatically. If not, input the values without using any spaces. The password is not case sensitive, so upper or lower case is not relevant. See Section 4.6.2.1 for obtaining a password.
  • Page 92 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. 1. Open the ContainerLINK™ app, navigate to the Settings page and select “WiFi” in the upper left corner. T-372 4-58...
  • Page 93 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 94: 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 Software is subdivided into operational software, configuration software, and data memory. DataCORDER functions may be accessed by keypad selections and viewed on the display module.

  • Page 95: Table 4-8 Datacorder Configuration Variables

    A list of the configuration variables is provided in Table 4–8. Descriptions of DataCORDER operation for each variable setting are provided in the following paragraphs. Table 4–8 DataCORDER Configuration Variables Config Title Default Option dCF01 (Future Use) dCF02 Sensor Configuration 2, 5, 6, 9, 54, 64, 94 dCF03 Logging Interval (Minutes)
  • Page 96 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 97: Datacorder Operational Software

    Procedure to Display Stored Temperatures: 1. Press the ALT. MODE key on the keypad. 2. Use the Arrow keys until “dCdSP” is displayed, then press the ENTER key. 3. Use the Arrow keys to toggle through S (supply), R (Return), P1, P2, P3 and C4 (Cargo) sensors. 4.

  • Page 98: Datacorder Power Up

    Table 4–10 DataCORDER Function Code Assignments (Continued) Code Description dC20-24 Temperature Sensors 1-5 Calibration Current calibration offset values for each of the five probes: supply, return, USDA #1, #2, and #3. These values are entered via the interrogation program. dC25 Future Expansion This code is for future expansion, and is not in use at this time.

  • Page 99: Datacorder Communications

    4.7.5 DataCORDER Communications Data can be retrieved from the DataCORDER and viewed with DataLINE software for Windows or the ContainerLINK™ app, see Figure 4.9. These programs allow interrogation, configuration variable assignment, screen view of the data, hard copy report generation, cold treatment probe calibration and file management. After software revision 6315, DataLINE 3.12 or ContainerLINK™...
  • Page 100 Table 4–11 DataCORDER Pre-Trip Result Records (Continued) Test Title Data Compressor Leak Test Pass / Fail / Skip Economizer Valve Test Pass / Fail / Skip Digital Unloader Valve Test Pass / Fail / Skip Liquid Injection Valve Test (If Pass / Fail / Skip equipped) 6-10...

  • Page 101: 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 102: Adjusting Fresh Air Makeup Vent

    Procedure: 1. Make sure the Start-Stop switch (ST), located on the control panel, is Off (“0”). 2. Make sure circuit breaker CB-1, located in the control box, and CB-2, located on the transformer, are both Off (“0”). 3. Plug in and lock the 460 VAC power plug at the receptacle on the transformer. 4.

  • Page 103: Vent Position Sensor

    Figure 5.2 Upper Fresh Air Make Up Flow Chart Flow Flow (CMH) 50HZ (CMH) 60HZ TBAR TBAR 1 1/2” 1 1/2” TBAR TBAR 2 5/8” 2 5/8” TBAR 3” TBAR 3” 90 100 90 100 Percent Open Percent Open 5.3.2 Vent Position Sensor The Vent Position Sensor (VPS) allows the user to determine the position of the fresh air vent via Cd45.

  • Page 104: Starting And Stopping Instructions

    5.5 Starting and Stopping Instructions WARNING Make sure that the unit circuit breaker(s) CB-1 & 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 105: Performing A Pre-Trip

    5.7 Performing a Pre-Trip Section 4.5 for an explanation of Pre-Trip Inspection, the different modes of operation and a description of all Pre-Trip test codes. 5.7.1 Starting a Pre-Trip from the Keypad 1. Press the PRE-TRIP key to access the Pre-Trip test selection menu. 2.

  • Page 106: Displaying Pre-Trip Test Results From The Keypad

    CAUTION When a failure occurs during automatic testing, the unit will suspend operation awaiting oper- ator intervention. 6. To Run an Individual Test: Scroll through the selections by pressing the Up or Down Arrow keys to display an individual test code. Press the ENTER key when the desired test code is displayed. •...

  • Page 107: Enabling Operating Modes

    If the supply probes agree and the return probes disagree, invalidate the worst return probe. If the probe check is being run as part of Pre-Trip P-5, an alarm will be triggered for the invalidated probe. If it is a run time defrost probe check, the invalidated probe will be passed over and no alarm will be necessary.

  • Page 108: Automatic Cold Treatment (Act) Mode

    Turning On TripWise: 1. Press the CODE SELECT key on the keypad. 2. Use the Arrow keys to bring up code Cd65 and press the ENTER key. 3. Use the Arrow Keys to bring up “On” and press the ENTER key. 4.

  • Page 109: Automatic Setpoint Change (Asc) Mode

    7. The display will show “ProbE | 1234” with the right display showing the probe numbers that are connected. Press ENTER. COOL HEAT DEFROST IN RANGE ALARM SUPPLY RETURN SETPOINT/Code AIR TEMPERATURE/Data 8. The display will show “SPnEW | ##.#°C” with the right display flashing the setpoint for when cold treatment process has completed.

  • Page 110: Pharma Mode

    10. The display will return back to “SP # | #.#°C”. 11. If there was more than 1 programmed setpoint chosen (nSc value), then the process will repeat itself of selecting a setpoint along with days to run that setpoint. Repeat steps 7-10 for all setpoints. If there are no more programmed setpoints, then this last setpoint will be for unit temperature after ASC has completed.
  • Page 111 Turning On and Setting EverFRESH: Turning on EverFRESH enables all EverFRESH operations and setpoints for CO2 and O2 are confirmed. 1. Press the CODE SELECT key on the keypad. 2. Use the Arrow keys until “Cd 71” is displayed, then press the ENTER key. 3.

  • Page 113: 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 7.27.2 Controller Correct Software software Software Loading Procedure.

  • Page 114: 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 Start-Stop switch (ST) OFF or defective Check No power to unit Circuit breaker tripped or OFF Check Autotransformer not connected Section 5.2.2...

  • Page 115: 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 6.15 Abnormal currents Section 6.16 Controller malfunction Section 6.9 Evaporator fan or motor defective Section 7.17 Refrigeration system Compressor service valves or liquid line shutoff valve Open valves completely...

  • Page 116: Figure 3.2 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 3.3 Heater contactor or coil defective Replace Initiates but does not defrost...

  • Page 117: Microprocessor Malfunction

    Table 6–1 Troubleshooting Symptoms (Continued) Condition Possible Cause Remedy / Reference Microprocessor Malfunction Software and/or controller configuration incorrect Check Sensor defective Section 7.28 Will not control Wiring defective Check Refrigerant charge low Section 7.3 6.10 No Evaporator Air Flow or Restricted Air Flow Coil has frost build-up Section 6.6 Evaporator coil blocked...

  • Page 118: Water-Cooled Condenser Or Water Pressure Switch

    Table 6–1 Troubleshooting Symptoms (Continued) Condition Possible Cause Remedy / Reference 6.13 Water-Cooled Condenser or Water Pressure Switch Coil dirty High discharge pressure Section 7.13 Non-condensibles Water pressure switch malfunction Check Condenser fan starts and stops Water supply interruption Check 6.14 Compressor Operating in Reverse NOTE The compressor may start in reverse for up to 10 seconds to determine correct phase rotation...

  • Page 119: Service

    Section 7 Service 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 (O ) for leak testing or operating the product. Charge only with refrigerants R-134a or R-513A as specified for the unit model number: Refrigerant must conform to AHRI Standard 700 specification.

  • Page 120: Evacuating The Manifold Gauge Set

    A manifold gauge / hose set with self-sealing hoses, see Figure 7.2, is required for service of the models covered within this manual. The manifold gauge/hose set is available from Carrier Transicold (part number 07-00294-00, which includes items 1 through 6, see Figure 7.2.

  • Page 121: Connecting The Manifold Gauge Set

    Figure 7.3 Service Valve Valve (Backseated) Valve (Frontseated) 1) Access Valve 4) Compressor or Filter Drier Inlet Connection 2) Step Cap 5) Line Connection 3) Valve Stem - - - - - Connection of the manifold gauge / hose set, see Figure 7.4, is dependent on the component being serviced.

  • Page 122: Automatic Pump Down

    CAUTION The scroll compressor achieves low suction pressure very quickly. Do not use the compressor to evacuate the system below 0 psig. Never operate the compressor with the suction or discharge service valves closed (frontseated). Internal damage will result from operating the compressor in a deep vacuum.

  • Page 123: Figure 7.4 Refrigeration System Service Connections

    2. Essential tools to properly evacuate and dehydrate any system include a vacuum pump (8m3/hr = 5 cfm volume displacement) and an electronic vacuum gauge. The pump is available from Carrier Transicold, P/N 07-00176-11. The micron gauge is P/N 07-00414-00.
  • Page 124 NOTE To prevent the area between the Economizer Solenoid Valve (ESV) and the compressor from being isolated during evacuation, it is necessary to open the ESV using a magnet tool (Carrier Transicold P/ N 07-00512-00). 3. Remove the ESV coil from the valve body. Place the magnet tool over the valve stem. An audible click will be heard when the ESV opens.
  • Page 125 2. Bring the container temperature to approximately 0°C (32°F) or below. Then set the controller setpoint to - 25°C (-13°F). 3. Partially block the condenser coil inlet air. If covering the lower portion of the coil is not sufficient, remove the left hand infill panel and cover the left side of the coil.
  • Page 126 7.9 Compressor WARNING Make sure power to the unit is OFF and power plug disconnected before replacing the compressor. WARNING Before disassembly of the compressor, be sure to relieve the internal pressure very carefully by slightly loosening the couplings to break the seal. CAUTION The scroll compressor achieves low suction pressure very quickly.

  • Page 127: Figure 7.5 Compressor Kit

    13. Slide the new compressor into the unit. See Figure 7.5. NOTE DO NOT add any oil to the replacement compressor. Replacement compressor is shipped with full oil charge of 60 oz. Figure 7.5 Compressor Kit 1) O-Ring (Unloader Connection) 7) O-Ring (Economizer Connection) 2) Teflon Seal for Valve 8) Teflon Seal for Valve Connection (2)

  • Page 128: Figure 7.6 High Pressure Switch Testing With Nitrogen

    20. Evacuate the compressor to 1000 microns if the unit was pumped down before the replaced compressor was removed. Otherwise, evacuate the complete unit and charge it with refrigerant. See Section 7.6.1 Section 7.7.1. 21. Open the compressor terminal cover and connect the compressor power cable following the steps below: a.
  • Page 129 6. Open cylinder valve. Slowly close bleed-off valve to increase pressure on switch. The switch should open at a static pressure up to 25 kg/cm (350 psig). If a light is used, the light will go out. If an ohmmeter is used, the meter will indicate open circuit.
  • Page 130 9. Remove and retain sufficient putty from around the drain lines to allow the tubes to be slid back through the side support bracket. 10. Remove the filter drier. 11. Unbraze the inlet connection to the coil. 12. Remove the cushion clamps securing the liquid line to the top and bottom receiver brackets. Retain all clamps and securing hardware.

  • Page 131: Figure 7.7 Condenser Fan Position

    18. Remove the condenser fan, and place it on the shaft facing the correct direction. Adjust the fan to the correct position, 37mm (1.5”) from the fan shroud, see Figure 7.7. Figure 7.7 Condenser Fan Position 37mm (1.5”) Shroud 19. Use Loctite “H” on the fan set screws, and tighten. 20.
  • Page 132 10. To make sure that the motor is aligned properly, slide the condenser fan onto the motor shaft reversed but do not secure. 11. Rotate the fan to make sure the fan blades do not contact the shroud: • If the fan motor is misaligned vertically, add or remove shims to align. •...

  • Page 133: Figure 7.8 Water-Cooled Condenser Cleaning - Forced Circulation

    7.13.3 Cleaning Procedure Detailed 1. Drain and flush the water circuit of the condenser coil. If scale on the tube inner surfaces is accompanied by slime, a thorough cleaning is necessary before de-scaling process can be accomplished. 2. To remove slime or mud, use Aluminum Cleaner® 164. Mix 170 grams (6 ounces) per 3.785 liters (1 U.S. gallon) of water.

  • Page 134: Figure 7.9 Water-Cooled Condenser Cleaning - Gravity Circulation

    Figure 7.9 Water-Cooled Condenser Cleaning - Gravity Circulation Fill condenser with cleaning solution. Do not add solution more rapidly than vent can exhaust gases caused by chemical reaction. 1” pipe Approximately 5’ Vent pipe 3’ to 4’ Condenser 7. The time required for de-scaling will vary, depending upon the extent of the deposits. One way to determine when de-scaling has been completed is to titrate the solution periodically, using titrating equipment provided free by the Oakite technical service representative.

  • Page 135: Figure 7.10 Heater Arrangement

    7.15 Evaporator Coil The evaporator section, including the evaporator coil, should be cleaned regularly. The preferred cleaning fluid is fresh water or steam. Another recommended cleaner is Oakite 202 or similar, following manufacturer’s instructions. The two drain pan hoses are routed behind the condenser fan motor and compressor. The drain pan line(s) must be open to ensure adequate drainage.
  • Page 136 7.16.1 Megger Testing the Heaters WARNING Always turn OFF the unit circuit breakers (CB-1 & CB-2) and disconnect main power supply before working on moving parts. All of the checks performed during this procedure should be carried out using a 500v Meg-ohm tester. 1.

  • Page 137: Figure 7.11 Evaporator Fan Assembly

    WARNING Before servicing the unit, make sure the circuit breakers (CB-1 & CB-2) and start-stop switch (ST) are in the OFF position and the power plug is disconnected. a. With the heater pair identified, remove the upper back panel inside the container. b.

  • Page 138: Figure 7.12 Access Panel Torque Pattern

    7.17.1 Replacing the Evaporator Fan Assembly WARNING Always turn OFF the unit circuit breakers (CB-1 & CB-2) and disconnect main power supply before working on moving parts. 1. Remove the access panel by removing the mounting bolts and TIR locking device. Reach inside of the unit and remove the Ty-Rap securing the wire harness loop.
  • Page 139 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 140: Figure 7.13 Electronic Expansion Valve (Eev)

    Figure 7.13 Electronic Expansion Valve (EEV) Flow Direction 1) Coil Boot 3) Electronic Expansion Valve (EEV) 2) Coil 4) Strainer - - - - - 7.19.1 Removing an EEV WARNING Always turn OFF the unit circuit breakers (CB-1 & CB-2) and disconnect main power supply before working on moving parts.

  • Page 141: Figure 7.14 Economizer Solenoid Valve (Esv)

    7.20 Economizer Solenoid Valve (ESV) The Economizer Solenoid Valve (ESV), see Figure 7.14, opens when the unit is in Economized operation. The liquid refrigerant flows through the ESV to the expansion valve internal passages, absorbing heat from the liquid refrigerant flowing to the EEV. The resultant “medium” temperature / pressure gas enters the compressor at the economizer port fitting.

  • Page 142: Figure 7.15 Economizer Solenoid Valve (Esv) Coil Assembly

    Figure 7.15 Economizer Solenoid Valve (ESV) Coil Assembly 1) Slotted Screw 4) Bottom Coil (large) O-ring 2) Top Coil (small) O-ring 5) Brass Spacer 3) Solenoid Coil, Tube and Body - - - - - 7.20.4 Installing an ESV Coil 1.

  • Page 143: Figure 7.17 Adapter And O-Ring

    7.21.1 Removing an EXV 1. Pump down the compressor, see Section 7.4, and frontseat both suction and discharge valves. If the unit is not equipped with service valves, evacuate the unit. See Section 7.6.1. 2. Turn unit power off and remove power from the unit. 3.
  • Page 144 5. Using refrigerant (R-134a or R-513A as specified for the unit model number) or Nitrogen, pressurize the line to 50 psi (3.5 bar) at the adapter connection and close supply at the tank. Pressure should hold as the valve is normally closed. If pressure drops, check for leaks at the installed fitting (part number 40-50076-00sv); repair and retest.

  • Page 145: Figure 7.18 Digital Unloader Valve (Duv) Assembly

    Figure 7.18 Digital Unloader Valve (DUV) Assembly 1) O-ring (hidden) 4) Screen Valve Strainer 2) Sleeve 5) Tube 3) Hex Nut, 1/2 OD 6) Solenoid Valve Body - - - - - 7. Examine the compressor and service valves. Ensure that the o-ring is not stuck in the gland of the valve. 8.

  • Page 146: Figure 7.19 Autotransformer

    6. If the timer is not operating, follow the above procedure to display the timer. Use an Arrow key to scroll to the desired time interval and press ENTER to start the timer. 7. The above described sequence may be repeated during the timer cycle to change to another override. Table 7–1 Valve Override Control Displays for Cd41 “SELCt”...
  • Page 147 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 148 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 149 7.26.4 AC Line Filter There is an AC Line Filter installed between the Control Transformer and the PW Connector on the ML5 controller. This filter reduces Electromagnetic Voltage Transients induced / coupled on to the 36 VAC Control Transformer secondary of the Transformer. When the AC Line filter fails, 18 VAC will not be provided to the controller and the system will not power up.
  • Page 150 4. With the power filter removed, check for a capacitance reading of 0.54 uF +/-10% across pins 1 and 3. And then across pins 2-4. 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%.
  • Page 151 6. Final check on the power filter is to verify the discharge resistor on the power filter output. Check resistance between pins 2 and 4 on the load side of the power filter for 330k +/- 10%. Ώ 7. Reinstall the power filter. Install the right side of the power filter to the bracket with ground leads.Then, install the mounting screw on the right side of the power filter.
  • Page 152 Power Filter Emergency Bypass Procedure 1. Connect the following with a 7.5 Amp automotive type fuse and cover the connections with electrical tape: • PF1-TRX4 to ST5-PF2 • PF3-TRX3 to STS2-PF4 7.27 Controller Programming Procedures Refer to the T-372PL parts manual for a list of available tools for interfacing with the ML5 controller.
  • Page 153 5. Use the Arrow keys until “UP LoAd” is displayed, then press ENTER. 6. “LoAd XXXX” is now on the display. If more than one ML5 software revision file is on the USB flash drive at the root level, press the Arrow keys until the desired revision is displayed. 7.
  • Page 154 • Press the ENTER key to confirm the date value being modified and bring up the next value for editing. • Press the CODE SELECT key to return to the previous date value. 8. Once date editing is complete and the day (DD) value is selected, press the ENTER key. 9.

  • Page 155: Figure 7.20 Controller Harness Tool

    Notes: • Wherever possible, use a thermometer that is regularly calibrated by an accredited test lab. Contact your instrument representative if the reference thermometer is not showing correct readings. • Always use a temperature measurement reference instrument which is of higher accuracy than the device checked –...
  • Page 156 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 7–2 Table 7–3.
  • Page 157 NOTE Before proceeding with the calibration procedure, ensure that controller software version is 5368 or higher and DataLINE version 3.1 or higher is installed onto the download device. Only the latest DataLINE and controller software will allow users to carry out Good Distribution Practice (GDP) calibration.
  • Page 158 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 159 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 160 8. Ensure that the Ice bath is at 0°C (32°F) using the calibrated reference thermometer. Make sure the thermometer is regularly maintained and cleaned. Confirm that the sensor readings have stabilized and the sensors are within +/- 0.3°C (0.5°F). The readings can be taken from the Uncalibrated column in the Current Probe Offset Temperatures table.

  • Page 161: Figure 7.21 Sensor Types

    6. 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 are stored in the controller and applied to the USDA sensors for use in generating sensor type reports. 7.

  • Page 162: Figure 7.22 Sensor And Cable Splice

    4. Cut the replacement sensor wires (opposite colors) back 40 mm (1-1/2 inches). See Figure 7.21. 5. Strip back insulation on all wiring 6.3 mm (1/4 inch). 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 7.22.
  • Page 163 Figure 7.23 Supply Sensor (SRS / STS) Positioning Supply Air Stream 6mm (1/4”) 1) Sensor Wire 4) Evaporator Back Panel 2) Cap & Grommet Assembly 5) Supply Sensor 3) Probe Holder - - - - - 7.28.8 Installing a Return Sensor (RTS / RRS) Reinstall the Return Temperature or Return Recorder sensor (RTS / RRS), as shown in Figure 7.24.

  • Page 164: Figure 7.25 Evaporator Temperature Sensor Positioning

    Figure 7.25 Evaporator Temperature Sensor Positioning 1 . 0 ” 25.4cm 1) Insulation 3) ETS1 and ETS2 2) ETS Tube Holder 4) Wire Tie - - - - - 7.28.11 Installing a Compressor Discharge Temperature Sensor (CPDS) The Compressor Discharge Temperature Sensor (CPDS), see Figure 7.26, monitors refrigerant temperature in the dome of the compressor.

  • Page 165: Table 7-2 Sensor Resistance - Ambs, Dts, Ets, Rrs, Rts, Srs, Sts

    Table 7–2 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 19,900 242,850 51.8 18,975 -29.2 228,382 53.6 18,093...

  • Page 166: Table 7-3 Sensor Resistance - Primeline Cpds

    Table 7–3 Sensor Resistance - PrimeLINE CPDS °C °F OHMS °C °F OHMS 2,889,600 64.4 117,656 -36.4 2,532,872 68.0 107,439 -32.8 2,225,078 71.6 98,194 -29.2 1,957,446 75.2 89,916 -25.6 1,724,386 86,113 -22.0 1,522,200 78.8 82,310 -18.4 1,345,074 82.4 75,473 -14.8 1,190,945 83.0 69,281...

  • Page 167: Figure 7.27 Humidity Sensor

    7.29.2 Checking the Operation of the Humidity Sensor This procedure is to be performed in an effort to ease the troubleshooting of the humidity sensor. When performing this procedure and while working on the unit, always follow the proper lockout / tagout procedures. Items Required: •...
  • Page 168 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. If the humidity sensor display is outside of this range, reconfirm the salt mixture and retest. If not in range, replace the sensor at the next opportunity.
  • Page 169 7.31 Cargo Sensor The optional cargo sensor outputs a resistance that is read by the controller as a temperature. The sensor will update the cargo status every 6 hours and display the last reading, whenever the controller is powered on. 7.31.1 Cargo Sensor Operational Values When diagnosing the cargo sensor, the box temperatures should be above 3°C (37.4°F).

  • Page 170: Table 7-4 R-134A Refrigerant Pressure Temperature Chart

    Table 7–4 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 -32.8 -0.37 -34.4 -31.0 -0.34...
  • Page 171 Table 7–4 R-134a Refrigerant Pressure Temperature Chart Note: Underline figures are inches of mercury vacuum °F °C PSIG °C °F 37.0 33.8 2.04 39.0 35.6 2.15 41.1 37.4 2.26 43.2 39.2 2.38 10.0 45.4 41.0 2.50 11.1 47.7 42.8 2.62 12.2 50.0 44.6...
  • Page 172 Table 7–4 R-134a Refrigerant Pressure Temperature Chart Note: Underline figures are inches of mercury vacuum °F °C PSIG °C °F 51.1 181.8 107.6 9.72 52.2 187.4 109.4 10.01 53.3 193.0 111.2 10.30 54.4 198.7 113.0 10.60 55.6 204.6 114.8 10.90 56.7 210.6 116.6...

  • Page 173: Table 7-5 R-513A Refrigerant Pressure Temperature Chart

    Table 7–5 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 174 Table 7–5 R-513A Refrigerant Pressure Temperature Chart Note: Underline figures are inches of mercury vacuum °F °C PSIG °C °F 47.0 33.8 2.65 49.3 35.6 2.78 51.6 37.4 2.91 54.0 39.2 3.04 10.0 56.5 41.0 3.18 11.1 59.0 42.8 3.32 12.2 61.6 44.6...
  • Page 175 Table 7–5 R-513A Refrigerant Pressure Temperature Chart Note: Underline figures are inches of mercury vacuum °F °C PSIG °C °F 51.1 204.7 107.6 11.10 52.2 210.5 109.4 11.40 53.3 216.5 111.2 11.72 54.4 222.7 113.0 12.04 55.6 228.9 114.8 12.36 56.7 235.2 116.6...

  • Page 176: Table 7-6 Recommended Bolt Torque Values (Dry, Non-Lubricated For 18-8 Stainless Steel)

    Table 7–6 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 16.4 22.0 29.8 7/16...
  • Page 177 Section 8 Electrical Schematic and Wiring Diagrams Legend - Standard Unit T-372...
  • Page 178 Electrical Schematic and Wiring Diagrams Schematic Diagram - Standard Unit T-372...
  • Page 179 Electrical Schematic and Wiring Diagrams Wiring Diagram (Sheet 1) - Standard Unit T-372...
  • Page 180 Electrical Schematic and Wiring Diagrams Wiring Diagram (Sheet 2) - Standard Unit T-372...
  • Page 181 Electrical Schematic and Wiring Diagrams Legend - Units with EverFRESH Option T-372...
  • Page 182 Electrical Schematic and Wiring Diagrams Schematic Diagram - Units with EverFRESH Option T-372...
  • Page 183 Electrical Schematic and Wiring Diagrams Wiring Diagram (Sheet 1) - Units with EverFRESH Option T-372...
  • Page 184 Electrical Schematic and Wiring Diagrams Wiring Diagram (Sheet 2) - Units with EverFRESH Option T-372...
  • Page 185 Serial Number: __________-__________ Manufacturing Date: ___________ We, manufacturer: Carrier Transicold Pte Ltd 251 Jalan Ahmad Ibrahim Singapore 629146 Declare, under our sole responsibility, that the PrimeLINE Container Unit: Model: 69NT40-571 is in conformity with the provisions of the following European Directives: •...
  • Page 187 Section 10 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 188 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 189 INDEX Numerics AL287 4–41 AL289 4–41 230 Volt Cable 2–3 AL907 4–41 460 Volt Cable 2–3 AL909 4–41 AL910 4–42 Access Panels Location 3–1 AL929 4–42 Air-Cooled Condenser Section 3–3 AL962 4–43 AL003 4–32 AL976 4–43 AL017 4–32 AL977 4–44 AL020 4–32 AL978 4–44 AL021 4–33...
  • Page 190 Cd21 4–5 4–7 Condenser Coil Cleaning 7–11 Cd22 4–5 4–7 Condenser Coil Cover Location 3–3 Cd23 4–5 4–7 Condenser Coil Install 7–12 Cd25 4–5 4–7 Condenser Coil Location 3–3 Cd26 4–5 4–7 Condenser Coil Preparation 7–12 Cd27 4–5 4–8 Condenser Coil Remove 7–11 Cd28 4–5 4–8 Condenser Coil Service 7–11...
  • Page 191 dC22 4–64 Evacuate and Dehydrate - Complete System 7–5 dC23 4–64 Evacuate and Dehydrate - Partial System 7–6 dC24 4–64 Evaporator 2–2 dC25 4–64 Evaporator Coil Heaters Location 3–6 dC26 4–64 Evaporator Coil Location 3–6 dC27 4–64 Evaporator Coil Replace 7–17 dC28 4–64 Evaporator Coil Service 7–17 dC29 4–64...
  • Page 192 P5-7 4–49 P5-8 4–49 Indicator Lights 4–2 P5-9 4–49 Inspection 5–1 P6 4–49 Interrogator Connector Receptacle (ICR) Location 3–6 P6-0 4–49 Introduction 2–1 9–1 P6-1 4–49 P6-10 4–50 Keypad 4–2 P6-2 4–49 Keypad Location 3–1 P6-3 4–49 P6-4 4–49 P6-5 4–50 Labels 2–3 P6-6 4–50 LO 4–46...
  • Page 193 Refrigerant, Adding Full Charge to System 7–7 Refrigerant, Adding Partial Charge to System 7–7 VAC Power, Connect to 190/230 5–1 Refrigerant, Converting to R-513A 7–7 VAC Power, Connect to 380/460 5–1 Refrigeration Circuit Description 3–11 Valve Override Controls 7–27 Refrigeration System Data 3–8 Vent Position Sensor (VPS) 5–3 Return Recorder Sensor (RRS) Install 7–45 Vent Position Sensor (VPS) Service 7–50...
  • Page 194 Carrier Transicold Division, Carrier Corporation P.O. Box 4805 Syracuse, NY 13221 USA https://www.carrier.com/container-refrigeration...

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Primeline 69nt40-571-100Primeline 69nt40-571-199

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