Carrier NDK33BN0KB, Operation & Service Manual

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62-61753-21 5-6
5.4 LogiCOLD MICROPROCESSOR REPLACE-
MENT & CONFIGURATION SETUP
When field diagnosis of a Carrier Transicold Trailer
refrigeration unit determines that a LogiCold Micropro-
cessor is not performing properly and must be re-
placed, the following steps MUST be taken to ensure
correct operation of the unit following the repair.
Prior to beginning work on the unit, ensure that the
current Configuration file has been procured the cus-
tomer and written onto a Configuration PC Card, using
the ReeferManager Program. If the original micropro-
cessor was equipped with the IntelliSet option, this file
will also need to be on a Configuration Card in order to
install the IntelliSet parameters into the replacement
microprocessor. A computer is needed to enter the
engine and switch on hours into the new microproces-
sor.
5.4.1 Microprocessor Replacement
a. If possible, power the microprocessor up, either
using a PC Mode Jumper, or by placing the
Start/Run - OFF Switch (SROS) in the Run position.
If the microprocessor will not power up, skip ahead
to stepd.
b. Insert a Download PC Card into the PC Card slot
and download all data from the Data Recorder. If a
Download Card is not available, data may also be
downloaded using a download cable and the
ReeferManager and Reports Program.
c. Then, scroll through the Data List and make note of
the following from the MessageCenter:
 ID Number
 Unit Serial Number
 Unit Model Number
 Engine Protect Hours
 Engine Sleep Hours
 Switch On Protect Hours
 Switch On Sleep Hours
 Switch On Standby Hours
 Compressor Run
 High Speed Hours
 Date and Time
d. Remove PC Jumper. download cable and turn
SROS to Off.
e. Remove negative battery cable from battery.
f. Remove Connectors 1MP, 2MP, & 3MP from the
outside of the Control Box.
g. Open Keypad side door. Open control box door.
h. Remove Connectors 5MP & 6MP inside the Control
Box. Remove all wires from the Micro.
i. Locate wire to 80A fuse that runs through the Cur-
rent Sensor. Note the orientation of the wire through
the Current Sensor, to be certain that the wire is re-
installed through the new Current Sensor in the
same direction. (Inserting the wire through the Cur-
rent Sensor in the opposite direction will result in er-
roneous current readings.) Remove wire from fuse
holder and gently pull through the Current Sensor.
j. Remove the screws holding the sides of the Micro
into the Control Box. Remove the single screw hold-
ing the top of the Micro in place.
k. Pull the Micro back, and twist out of the Control Box.
l. Install the new Micro by reversing steps a. thru k.
5.4.2 Microprocessor Setup
NOTE
Before starting the unit, the microprocessor
must be configured for the model unit it is in-
stalled in. Refer to Microprocessor Setup in-
formation below.
a. Ensure that the new microprocessor is in place, all
wires connected and the negative battery cable is
reconnected.
b. Place the SROS in the START/RUN position. The
controller will immediately go into the Configuration
Mode so that the correct model number can be se-
lected. Using the Up or Down Arrow Keys, scroll
through the list until the correct Model Number ap-
pears (verify the Model / Serial Plate on the unit).
Press the = Key to enter the new model number.
c. Press the Up Arrow Key again, and the Unit Serial
Number field will appear. Press the = Key, then the
Up Arrow Key. You will see a blinking cursor in the
field. Now, using the Up or Down Arrow Keys, scroll
through the Number / Letter list, until the first letter
of the serial number appears. Press the = Key to en-
ter that letter, and advance the cursor to the next
place. Repeat this process until the entire Unit Serial
Number is entered (i.e. MDP90512345).
d. Press the Up Arrow Key again, and the ID field will
appear. Press the = Key, then the Up Arrow Key.
You will see a blinking cursor in the field. Using the
Up or Down Arrow Keys, scroll through the Number
/ Letter list, until the first letter / number of the re-
quired ID appears. Press the = Key to enter that
number / letter, and advance the cursor to the next
place. Repeat this process until the entire ID num-
ber is entered. If the cursor is still blinking in a blank
space after you are finished, slowly (wait
2-3 seconds between presses) press the = Key to
leave blanks in the remaining spaces. When you
reach the end, the message "

TO SCROLL,
THEN = TO SELECT" will appear (i.e. XYZ5678).
e. Now, press the Down Arrow Key until SET TIME
appears. Press the = Key then the Up Arrow Key to
enter that menu.
NOTE
Be certain that the clock you are using is accu-
rate. Also, some customers are located in dif-
ferent time zones from the repair location. If
you know the customers desired time, enter
that time. If you don’t, enter your current time
.