Ingersoll-Rand Thermo King CRR DF MPC2000, Maintenance Manual

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Unit Description
28
Microprocessor Controller
MPC2000, MPC2000ID and MP3000 controllers incorporate refrigeration system component control,
thermostat, digital thermometer and fault indication capabilities into one self-contained package. Units
with a MPC2000 or MP3000 controller are also equipped with a separate datalogger while the
MPC2000ID controller includes an integral datalogger.
Each controller mounts in a weather tight, corrosion resistance enclosure. A large-character LED display
(top) provides easy viewing of the control sensor temperature (return or supply air temperature). A 4-line,
20-character LCD display (bottom) display shows important data including the setpoint temperature,
controller Main Menu tree and important unit operating data.
Sixteen general purpose keys are used to enter and scroll through the controller menu tree and message
text; initiate Pretrip and Function tests; enter new setpoint temperature; and enter trip information. The
keyboard supports both numerical and text input. Four special keys provide quick access to setpoint
temperature change, manual defrost initiation, alternate return/supply air temperature display, and
alternate temperature scale (C/F) display.
Each control system consists of a MPC2000, MPC2000ID or MP3000 microprocessor controller, a main
relay printed circuit board and six temperature sensors.
Status indicator LEDs in the LED display signal Compressor, Defrost, Heat, In-range, Alarm, Supply
Temperature display and Return Temperature display.
NOTE: Humidity indicator LED is not used on the CRR DF application. Heat indicator LED is used
during Defrost mode only.
Datalogger
Units with a MPC2000 or MP3000 controller are also equipped with a separate datalogger. The
MPC2000ID controller includes an integral datalogger. The datalogger can record sensor temperatures as
well as loss of power, alarms, unit operating modes, sensor failure, setpoint change and unit shutdown
indications. MPC2000 or MP3000 data recordings are stored in a RAM memory that is backed by battery.
MPC2000ID data recording are stored in a permanent Flash RAM memory.
Logging intervals are selectable from 1 minute and 1/2, 1, 2 or 4 hours. When a 1 hour logging interval is
selected, the datalogger memory can store approximately 512 days of information. The logging of USDA
sensors is fixed at 1 hour intervals to comply with USDA requirements.
The datalogger clock is factory set at UTC time. All data logs include the time and date; setpoint
temperature; and supply, return, USDA1, USDA2 and USDA3 sensor temperatures. All temperature logs
can be viewed from the controller’s LCD message display.
A high speed serial communication port provides data retrieval using a DRU-II or SmartSponge handheld
data retriever; or a REFCON power line remote monitoring system.
Three Evaporator Fans
Three evaporator fans operate continuously to circulate air inside the container. Two-speed fans operate
continuously on low speed for deep frozen and frozen cargo (setpoints of -10 C [+14 F] and below).
USDA Cold Treatment Temperature Recording
The datalogger includes provisions for the use of three USDA sensors. These sensors allow temperatures
in various areas of the load to be monitored and recorded for United States Department of Agriculture use
in monitoring Cold Treatment shipments. The USDA sensors record temperatures from -80.0 C to +10 C
(-112.0 F to +50.0 F).