Carrier PrimeLINE Operation And Service Manual page 20

2.4.4 Compressor
The unit is fitted with either an R-134a or an R-513A scroll compressor equipped with suction and discharge
service connections. To identify an R-513A-ready compressor in the field, a green dot is located on the top of the
compressor on the DUV fitting.
2.4.5 Condenser Coil
Units may be fitted either with a "C" shape condenser coil, or a "U" shape micro-channel heat exchanger (MCHE)
condenser coil.
2.4.6 Evaporator
The evaporator section is equipped with an 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.
2.4.8 Plate Set
Each 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.
2.5 Option Descriptions
Various options may be factory or field equipped to the base unit. These options are described in the following sub-
paragraphs.
2.5.1 Battery
The refrigeration controller may be fitted with standard replaceable batteries or a rechargeable battery pack.
Rechargeable battery packs may be fitted in the standard location or in a secure location.
2.5.2 Dehumidification
The unit may be fitted with a humidity sensor. This sensor allows setting of a humidity set point in the controller. In
dehumidification mode, the controller will operate to reduce internal container moisture level.
2.5.3 USDA
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.
2.5.4 Interrogator
Units that use the DataCORDER function are fitted with interrogator receptacles for connection of equipment to
download the recorded data. Two receptacles may be fitted; one is accessible from the front of the container and
the other is mounted inside the container (with the USDA receptacles).
2.5.5 Remote Monitoring
The unit may be fitted with a remote monitoring receptacle. This item allows connection of remote indicators for
COOL, DEFROST and IN RANGE. Unless otherwise indicated, the receptacle is mounted at the control box
location.
2.5.6 Communications Interface Module
The unit may be fitted with a communications interface module. The communications interface module is a slave
module which allows communication with a master central monitoring station. The module will respond to
communication and return information over the main power line. Refer to the ship master system technical manual
for further information.
2.5.7 Autotransformer
An autotransformer may be provided to allow operation on 190/230, 3-phase, 50/60 Hz power. The
autotransformer raises the supply voltage to the nominal 380/460 volt power required by the base unit. The
autotransformer may also be fitted with an individual circuit breaker for the 230 volt power.
T-362 2–2