Section 2
The Carrier Transicold OptimaLINE units, model numbers 69NT40-701-xxx, 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.
OptimaLINE units are self-contained, all electric units, which include cooling and heating systems to provide precise temperature control. The units are supplied with a complete charge of refrigerant and compressor lubricating oil, and are ready for operation upon installation.
The base unit operates on nominal 380/460 volt, 3-phase, 50/60 hertz (Hz) power. Control system power is provided by a transformer which steps the supply power down to 18 and 24 volts, single phase.
2.2Configuration Identification
Unit identification information is provided on a nameplate, as shown in Figure 2.1, located on the inside wall of the container near the power cable storage area. The nameplate provides the unit model number, unit serial number and parts identification number (PID). The model number identifies the overall unit configuration, while the PID number provides information on specific optional equipment, factory provisioned to allow for field installation of optional equipment and differences in detailed parts.
Figure 2.1 Unit Nameplate
OptimaLINE units covered in this manual are supplied with a complete charge of R-134a refrigerant.The refrigerant charge amount is listed on the unit nameplate, shown in Figure 2.1.
These units may be field converted to different refrigerant (R-513A or R1234yf) at a later date, as requested by the unit owner. The unit model number will determine what refrigerant the unit is capable of being converted to, as explained in the following paragraphs.
2.3.1Model Numbers 69NT40-701-001 to 099
OptimaLINE units with model numbers in the range of 701-001 to 099 are R-513A-ready. This means the unit owner at a later date can perform a field conversion to recover R-134a refrigerant from the unit and replace with a complete charge of R-513A refrigerant. Refer to Service Section 7.1.9 for instructions for field conversion
2.3.2Model Numbers 69NT40-701-100 to 149
OptimaLINE units with model numbers in the range of 701-100 to 149 are R-513A-ready and R1234yf-ready. This means the unit owner at a later date can perform a field conversion to recover R-134a refrigerant from the unit and replace with a complete charge of R-513A or R1234yf refrigerant. Refer to Service Section 7.1.9 for instructions for field conversion.
NOTE: When conversion to R1234yf is completed, the unit model number is updated in the controller to a range of 701-150 to 199. This model range is covered by a separate manual, T-384.
Units are equipped with an aluminum control box, and may be fitted with a lockable door.
The controller is a Carrier Transicold Micro-Link 5 microprocessor. See Section 4.1 for more information. Controllers will be factory-equipped with the latest version of operational software, but will NOT be configured for a specific model number and will need to be configured at the time of installation or sale.
The unit is fitted with suction and discharge refrigerant temperature sensors. The sensor readings may be viewed on the controller display.
The unit is fitted with evaporator, suction, and discharge pressure transducers. The transducer readings may be viewed on the controller display.
The unit is fitted with a R-513A-ready variable speed scroll compressor equipped with suction and discharge service connections.
The unit is fitted with a micro channel heat exchanger condenser coil.
The unit is equipped with a three phase, dual speed condenser fan motor. Opening of the condenser fan motor internal protector will stop the fan motor and the controller will subsequently shut down the compressor. The condenser fan grille is direct bolted.
The evaporator section is equipped with an evaporator coil and electronic expansion valve (EEV).
The unit is equipped with 2 three-phase evaporator fan motors. Opening of an evaporator fan internal protector will shut down the unit.
The unit is equipped with a tethered set of wiring schematics and wiring diagram plates. The plate sets are ordered using a seven-digit base part number and a two-digit dash number.
The refrigeration controller may be fitted with standard replaceable batteries or a rechargeable battery pack. 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.
NOTE: If ambient temperature is more than 45°C, the carrier-provided rechargeable batteries will not charge.
Various options may be factory or field equipped to the base unit. These options are described below.
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.
The unit may be supplied with fittings for additional temperature probes, which allow recording of USDA Cold Treatment data by the integral DataCORDER function of the Micro-Link refrigeration controller. There is one external calibration receptacle for connection of equipment for calibration. It is located inside the unit along side the USDA receptacles and is for performing USDA probe calibration. There are no write commands capable from this port.
The unit may be equipped with handles to facilitate access to stacked containers. These fixed handles are located on either side of the unit.
Aluminum back panels may have access doors and/or hinge mounting.
Various power cable and plug designs are available for the main 460 volt supply. The plug options tailor the cables to each customer’s requirements.
Various designs are available for storage of the power cables. These options are variations of the compressor section cable guard.
The unit may be fitted with an upper fresh air makeup assembly. The fresh air makeup assembly is available with a vent positioning sensor (VPS) and may also be fitted with screens.
Safety instruction and function code listing labels differ depending on the options installed. Labels available with additional languages are listed in the parts list.
EverFRESH® is a controlled atmosphere option that is able control container atmosphere by supplying nitrogen and oxygen into the container space and simultaneously controlling levels of oxygen and carbon dioxide. This extends the produce ripening process, which increases shelf life and enables longer cargo routes for certain perishable commodities. See Section 5.9.6 for more detail.
Detailed procedures and technical information related to the EverFRESH controlled atmosphere system are included in the separate T-374 EverFRESH Manual. This can be found in the ContainerLINK™ app or from the Literature section of the Container Refrigeration website.
FuelWise™ is a power-saving option available for OptimaLINE units. FuelWise software works by dynamically cycling the refrigeration system on and off to save energy while still maintaining temperature within +/- 0.25 degrees Celsius of setpoint on an hourly average. See Section 5.9.1 for more detail.
TripWise™ is a new premium option available for OptimaLINE 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. See Section 5.9.2 for more detail.