Carrier 69NT40-541-306, Операция и обслуживание

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2–1 T-354
SECTION 2
INTRODUCTION
2.1 INTRODUCTION
The Carrier Transicold Upflow container models 69NT40-541-314 series units are made of lightweight aluminum
frame construction. They are designed to fit in the front of a container and serve as the container's front wall. They
are one piece, self-contained, all-electric units, which includes cooling and heating systems to provide precise tem-
perature control.
The units are suppled with a complete charge of refrigerant R-134a and compressor lubricating oil, and are ready
for operation upon installation. Forklift pockets are provided for unit installation and removal.
The base unit operates on nominal 380/460 volt, 3-phase, 50/60 hertz power. An optional autotransformer may be
fitted to allow operation on nominal 190/230, 3-phase, 50/60 hertz power. Power for the control system is provided
by a transformer, which steps the supply power down to 18 and 24 volts, single phase.
The controller is a Carrier Transicold Micro-Link 3 microprocessor. The controller will operate 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 a mechanical or electronic temperature recorder.
The controller has a keypad and display for viewing or changing operating parameters. The display is also
equipped with lights to indicate various modes of operation.
2.2 CONFIGURATION IDENTIFICATION
Unit identification information is provided on a plate located near the compressor. The plate provides the unit model
number, the unit serial number and the unit parts identification number (PID). The model number identifies the
overall unit configuration while the PID provides information on specific optional equipment, factory provision to
allow for field installation of optional equipment and differences in detailed parts.
2.3 OPTION DESCRIPTION
Various options may be factory or field equipped to the base unit. These options are listed in the tables and
described in the following subparagraphs.
2.3.1 Battery
The refrigeration controller may be fitted with standard replaceable batteries or a rechargeable battery pack.
2.3.2 Dehumidification
The unit may be fitted with a humidity sensor. This sensor allows setting of a humidity set point in the controller. In
the dehumidification mode the controller will operate to reduce internal container moisture level.
2.3.3 Control Box
Units are equipped with either an aluminum or composite material box, and may be fitted with a lockable door.
2.3.4 Display Module
The unit may be fitted with a backlit Liquid Crystal Display (LCD) or a Light Emitting Diode (LED) Display.
2.3.5 Temperature Readout
The unit may be fitted with suction and discharge temperature sensors. The sensor readings may be viewed on the
controller display.
2.3.6 Pressure Readout
The unit may be fitted with suction and discharge pressure gauges, or suction and discharge transducers or no
pressure readout. The transducer readings may be viewed on the controller display.
2.3.7 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.