Carrier 69NT40-561-201, Руководство по эксплуатации и обслуживанию, Страница: 16 / 117

1 − 1 T − 364
SECTION 1
INTRODUCTION
1.1 INTRODUCTION
The Carrier Transicold model 69NT40 − 561 − 201 series
units are of lightweight aluminum frame construction,
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 include cooling and heating systems to provide
precise temperature control.
The units are supplied 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 (Hz) power. Control system power
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 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.
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.
1.2 CONFIGURATION IDENTIFICATION
Unit identification information is provided on a plate
located on the back wall of the condenser section. 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 number provides
information on specific optional equipment, factory
provisioned to allow for field installation of optional
equipment and differences in detailed parts.
1.3 FEATURE DESCRIPTIONS
1.3.1 Control Box
Units are equipped with an aluminum control box.
1.3.2 Temperature Readout
The unit is fitted with suction and discharge refrigerant
temperature sensors. The sensor readings may be
viewed on the controller display.
1.3.3 Pressure Readout
The unit is fitted with evaporator, suction, and discharge
pressure transducers. The transducer readings may be
viewed on the controller display.
1.3.4 Compressor
The unit is fitted with a scroll compressor equipped with
suction and discharge service connections.
1.3.5 Condenser Coil
The unit is fitted with a four − row square formed
condenser coil using 7mm tubing.
1.3.6 Evaporator
The evaporator section is equipped with an electronic
expansion valve (EEV).
1.3.7 Evaporator Fan Operation
Units are equipped with three − phase evaporator fan
motors. Opening of an evaporator fan internal protector
will shut down the unit.
1.3.8 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.
1.3.9 Battery
The refrigeration controller has a rechargeable battery
pack that has been fitted to the ML3 controller.
1.3.10 Dehumidification
The unit is 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.
1.3.11 USDA
The unit is 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.
1.3.12 Interrogator
Units have the DataCORDER function and are fitted
with interrogator receptacles for connection of
equipment to download the recorded data. Two
receptacles are fitted; one is accessible from the front of
the container and the other is mounted inside the
container (with the USDA receptacles).
1.3.13 Remote Monitoring
The unit is fitted with a remote monitoring receptacle.
This item allows connection of remote indicators for
COOL, DEFROST and IN RANGE. The receptacle is
mounted at the control box location.