Carrier Microlink 3 Manual

							Please circulate this newsletter to all of your support personnel
Carrier Transicold Division • P.O. Box 4805 • Syracuse, New York 13221 • +1 315-432-7688 • Fax +1 315-432-7698
AN EXCHANGE OF TECHNICAL INFORMATION
ABOUT CARRIER TRANSICOLD CONTAINER PRODUCTS VOLUME 9 NUMBER 1 1st Quarter 2004
Inside This Issue

Te c hTi p

Software Release Update

F3 Fuse / Economizer Solenoid Valve Coil
Te c hFact
Manual Defrost
High Pressure Switch 
Selection of Oil Filter 
Lower Vent Positioning Sensor
Configuration Variables
Auto Defrost
Icing of Recip Compressor 
Feature Article
MicroLink 3
General
2004 Training Schedule
Warranty Lookup feature
Te c hFact
Manual Defrost
69NT model units with PID’s (parts identification 
numbers) 1200 and greater will have the manual defrost
initiated through the keypad.
Minimum Software release version #5126 is required in
order for the new keypad to function correctly.Depressing and holding the Manual Defrost  / Interval
key for five (5) seconds will initiate defrost the same as
if the manual defrost switch was toggled.
If the defrost interval key is released in less than 
five (5) seconds, defrost interval (code 27) shall be 
displayed. 
It should be noted that with the installation of software
version #5126 or greater, that this feature will become
immediately active regardless of the keypad.  A manual
defrost will initiate by pressing and holding the defrost
interval key as described above or by using the switch.
Part Number: 79-01706-05SV
G. Busse  
						

							Feature Article
MicroLink 3
Carrier Transicold is proud to announce its latest 
edition to the microprocessor family, the ML3 
controller.  This new controller will have all the
same capabilities as the previous ML2i controller,
as well as some new enhancements.
Some of these enhancements are listed below.
• Increased I/O; Additional internal relays 
allows for the added I/O capacity and future 
growth.
• Enhanced battery charging, this will shorten 
the time required to charge the battery for 
recording purposes.
• Elimination of ESMV drive pack for OEM 
equipment; The drive capability has been 
incorporated into the new controller.
• Elimination of IOE module for Scroll OEM,
because of the increased I/O there is no longer
the need for the expansion module on new 
equipment.
• New software programming card; The new 
format will shorten controller programming 
time and allow all software revisions to be 
stored on one card (Scroll, Recip,
Configuration).
• Additional fuse added; This helps in 
troubleshooting of the controller.
The ML3 controller is backward compatible except
for the ML2 (69NT40-489 and 501 model units)
and the CA Controller in the Controlled
Atmosphere part of the unit.  These units will
require the ML2i controller. 
When an ML3 is used as a replacement for a ML2i
with an IOE controller in the Scroll units, the IOE 
module must be replaced with an adapter-harness
/ IOE kit, P/N 76-00763-00.An ML3 controller can be easily identified by one
of the following means:
• PART NUMBER 12-00579-00 (OEM) OR 
12-55006-00 (replacement).
• YELLOW LABEL reads CONTROLLER 
Micro-Link 3.
• 4 FUSES, F2, F1, F3A, AND F3B (note F2 & 
F1 are 5 Amp, and F3A & F3B are 7.5 Amp).
• 3 NEW CONNECTORS KE, KD, AND KC.
• All 69NT40-541 and 551 model units.
When replacing an ML2i with an ML3, the current
sensor spades connectors need to be removed and
replaced with butt-splices. The removal of the con-
nections was reviewed in the 4th Quarter 2003
TechLine Article titled, New Current Sensor.
M. Rogers
Label
Fuses
New
Connectors 
						

							Feature Article - MicroLink3 (cont)
Software Card
The ML3 controller will require a new type of 
programming card.  The new type is referred to as a
PCMCIA card.  Although there are many versions of
cards available throughout the world, Carrier Transicold
has selected one that fits its application and is guaran-
teed to work properly.  The new card part number is 
12-00594-XX.  Carrier Transicold only supports the use
of this card.
This card can hold the configuration and operation 
software for all 5XX units in the field.  The software
versions can be downloaded from the Internet just as it
is being done today. 
This PC card has an internal battery that needs to be
periodically charged.  It is recommended that the card
be charged for two hours every six months. The PC
card battery is charged when inserted in the Omni drive
(detailed below).
To further support this need, a card charging station
(CardPro 2000 SRAM)  that can charge four PC cards
at the same time is available as follows:
P/N 07-00446-00 for 110V, or 07-00446-01 for 220V.
An interface device is required to load the software to
the card.  The interface device, the Omni Drive that was
referenced above, is shown in the picture.  This Omni
drive is an external, removable disk PC drive.  It con-
nects with the PC through the USB or the parallel port.
It will display the PC card contents as shown to the
right. 
The Omni drive PC software may require periodic
updates.  All information and drive updates can be
found and downloaded from:
http://www.csm.de/html/e/support/download/frm/xo
mnidrive_usb.htm The PC card can only be inserted into the Omni Drive
with the yellow label down, as shown in the picture. 
The programming (updating the card with new software
files) is as easy as dragging and dropping (copy and
paste) the files between the different file folders.  When
new files are released and are available for download-
ing, they can be copied into the PC card via the Omni
drive.  Typically, the PC card file will have four files as
shown in the picture.
•menuDDMM.ml3, this file allows the user to chose 
which file/program to upload into the controller.
•cfYYMMDD.ml3, multi-configuration file  
•recp51XX.ml3, controller software program for 
recip, ML2i units.
•scrl53XX.ml3, controller software program for 
scroll units.
Z. Asprovski
Omni PC Card Drive
(USB port) P/N 07-00439-00 
(Parallel Port) P/N 07-00438-00
New PC Card
P/N 12-00594-XX 
						

							To program Operational Software into the
controller:
1. Turn Power off 
2. Insert software/programming PCMCIA card 
containing the following (example) files:
•menuDDMM.ml3, this file allows the user 
to chose which file/program to upload into 
the controller.
•cfYYMMDD.ml3, multi-configuration file  
•recp51XX.ml3, controller software program 
for recip units.
•scrl53XX.ml3, controller software program 
for scroll units.
3. Turn unit Power On.   Displays will show:
ruN    COnFG 
4. Press the UP or DOWN arrow key until display
reads,
LOAd    53XX for Scroll (odd numbers)
LOAd    51XX for Recip (even numbers)       
5. Press ENTER key once
6. Display will alternate to between    PrESS    
EntR    and    rEV    XXXX
7. Press ENTER key once
8. Displays will show.    Pro    SoFt
9. When software programming is complete 
display will show: Pro    donE 
10.Turn unit power off and remove PCMIA 
software/programming card
11.Turn power on, and wait 15 seconds - The 
status LED will be flashing fast, and there will 
be no display.  The controller is loading the new 
software into memory. This takes about 
15 seconds. When complete the controller will 
reset and power up normally.
12.Wait for default display, setpoint on the left, and 
control temperature on the right.
13.Confirm software is correct using keypad code 
select 18 to view    Cd18    XXXX
14.Turn power off. Operational Software is loaded
To program the Model Configuration into
the controller:
1. Turn the power off
2. Insert software/programming PCMCIA card 
containing the following (example) files:
•menuDDMM.ml3, this file allows the user 
to chose which file/program to upload into 
the controller.
•cfYYMMDD.ml3, multi-configuration file  
•recp51XX.ml3, controller software program 
for recip units.
•scrl53XX.ml3, controller software program 
for scroll units.
3. Turn power on.  Displays will show:
ruN COnFG
4. Press ENTER key once
5. Display will go blank for a few seconds and 
then display.  The selection will be based on the 
operational software that is loaded into the 
controller.
531   00 for Scroll
511    01 for Recip
6. Press the UP or DOWN arrow key until display 
reads the desired model number is displayed.
7. Press ENTER key once
8. Display will show    EEPrM    done 
9. Turn power off and remove PCMIA
software/programming card.
10.Turn unit on and confirm model configuration 
is correct using keypad to view code select 20
(Cd 20). The model will match what is found 
on the unit serial number plate.
11.Turn power off. Configuration is complete.
M. Rogers 
						

							Te c hFact
High Pressure Switch 
In December 2003, Carrier Transicold began factory
installing a new High Pressure Switch with an internal
snubber, P/N 12-00309-06, on all Container 
69NT40-511 (non-Scroll) units. The new switch
supercedes the old style switch, P/N 12-00309-03
which required the use of a separate snubber elbow.  
The new switch can be used on all non-Scroll units
equipped with an OEM High Pressure Switch. When
installing the new style switch in a unit that currently
has the old style switch installed the snubber elbow
MUST be removed and discarded. The new style switch
can then be installed directly in the compressor cylinder
head. It is very important that the new style switch
NOT be used with the snubber elbow that was supplied
with the old style switch and that old non-snubbered 
switch be used in units that have the new style switch.
Using the old style switch without snubber elbow may
lead to nuisance trips as a result of discharge pressure
spikes that may occur as part of normal operation.
Te c hTi p
Software Release Update
The latest software release versions for the 69NT units
are:
Scroll – 5314
ML2i / ML3 - 5127
ML2 – 1207
ML2 Datacorder - 2104
CA – 3108 
Te c hTi p
F3 Fuse / Economizer 
Solenoid Valve Coil
Field reports identified a few cases where the 10 Amp
control circuit fuse (F3) has repeatedly  blown in the
NT Scroll Units.  Although there are a number of dif-
ferent components that could be the reason for current
over limit resulting in a blown fuse, one component in
particular should be checked.  
The Economizer solenoid valve coil should be checked
for the proper current draw. The picture below shows
the location of the economizer solenoid. 
Economizer Solenoid Valve Check Procedure:
While the unit is in economized mode of operation
(Cd21 displays Open) measure the current draw of the
coil with Amp meter (make sure only one wire is
clamped while doing this).  A good coil will measure
around .5 to .6 Amps.  A current greater than .6 Amps
indicates problems with the coil and the part should be
replaced.
Te c hFact
Configuration Variables
On units with software version 5125 and higher, code
select 44 (Air Slide Opening) and 45 (Air Slide Timer)
have been consolidated into code 43 (Auto Fresh
Mode). Code 44 is now Auto Fresh Values and Code 45
is Vent Position Value. 
Z. Asprovski
P. Laros
G. Busse
P. Tanner
Internal Snubber 
						

							Te c hFact
Auto Defrost
Starting with software revisions 5127 (Recip Units),
Carrier Transicold introduced the Auto Defrost user
selectable option.   This option is an optimal way to
ensure proper airflow and lower power consumption.
The option has been added to the Defrost Interval selec-
tion (code select 27).   When scrolling through the
selection you will now have the following options, 3, 6,
9, 12, 24 and the new option AUTO  (some units may
be configured to allow defrost to be disabled altogether;
in this case a user-selected value of OFF will also be
available).
If automatic defrost option is chosen and the unit is in
perishable mode of operation, the defrost timer will ini-
tially be set to 3 hours and then adjusted based on the
accumulation of ice on the evaporator coil. The time
interval will increase accordingly until it meets the
operating conditions/requirements of the load.  This
way, defrosts are scheduled to occur only when 
necessary. 
If the unit is running in frozen operation, the defrost
logic will be the same as was the case in perishable
mode until the set point is reached.  Once the set point 
is reached, defrost timer will change to 12 hours for the
duration of the trip.  Since the defrost timer counts
compressor run time only, 12 hr interval will result in
roughly one defrost cycle per day.
Note, the temperature difference across the evaporator
coil is constantly calculated and the unit may go into
defrost prior to the 12 hr interval time, if determined
necessary (i.e excessive amount of ice due to external
factors, like partially open air exchange or container
back doors left opened).
If the unit is off power for 24 hrs or more, the defrost
interval will be reset to the 3 hrs followed by defrost
cycles when necessary, as described above in the per-
ishable mode or 12 hrs interval (frozen mode).
Te c hFact
Icing of Recip Compressor 
(frozen set points)
When a technician / engineer suspects a hermetic TXV
to be faulty due to frosting of a compressor and stepper
valve, they must always check the superheat of the
TXV and not presume it is faulty just on unit looks
(frost on the compressor). An empty or full unit in
range with a frozen set point at or below 0F (–18C)
may show, this along with a low refrigerant level in the
receiver.
A unit on full capacity (i.e. running 
continuously) operation will run in 
the frozen mode without causing any 
icing on the compressor and a 
refrigerant level will be seen in the sight glass.
However, at low ambient temperature, the compressor
starts to cycle due to normal operation.  As the unit
cycles, some frosting can begin to appear. 
During compressor off cycles, the TXV does not fully
close. The refrigerant can then migrate from the high
side through the TXV to the low side. At compressor
startup, due to the excess refrigerant in the low side
entering the compressor, the extra energy required to
boil off any excess refrigerant comes from the walls of
the compressor / suction line causing them to get much
colder which results in their icing.  After several cycles
like this, the refrigerant in the receiver will show low
levels. This is normal.  This refrigerant will vaporize
prior to entering the compressor cylinders, so no harm
is done to the compressor. If you have any concerns
that the TXV may be faulty, then the super heat should
be checked prior to replacing it. 
TXV’s should only be replaced after checking the
superheat, per recommended procedures in the service
manual.  Superheat range for model numbers
69NT 40 511 / 69NT 40 531 / 69NT 20 531 are 8F to
12F (4C to 7C).  Valves being replaced should be the
correct size and part number and should not be fitted to
units other than those they are specified for.  
• 69NT 40 511 (Recip Unit) 
Part number 14-00273-01
• 69NT 40 531 (Scroll Unit)
Part number 14-00273-02
Z. Asprovski
S. Bretherton 
						

							Te c hFact
Selection of Oil Filter
There is some confusion in the field regarding the cor-
rect oil filters to use in Carrier generator sets. In part,
this has come about with technological improvements
in the synthetic filter media.  The full flow and the
bypass options are now combined into the same filter
(detailed in the 4th Quarter 2003 TechLine).   Below
should assist in identifying the correct filter to be used
in the 69RG and 69UG units.
Units equipped with dual filter housings (oil bypass
system) see figure below
P/N 30-00323-00 - Full flow filter without internal
bypass should only be used in combination with 
P/N 30-00304-00 - Internal bypass oil filter
Units with Single oil filter housing and engine S/N’s
prior to 2Y2853
P/N 30-00450-00 - Full flow oil filter with internal 
by-pass
Units with Single oil filter housing and engine S/N’s
starting at 2Y2853
P/N 30-00463-00 - Extended Life Full flow oil filter
with internal bypass.  This filter requires a nipple for
backward capabilities (4th Quarter 2003 TechLine).
It should be noted that although the 30-00323-00 and
30-00450-00 filters fit the same filter housing, the 
30-00323-00 MUST NOT be used in place of the 
30-00450-00. The 30-00450-00 has an internal bypass
that will maintain lubrication in the event the filter is
plugged. The 30-00323-00 does not have the bypassand is used only in conjunction with the by-pass filter
30-00304-00 which will continue to provide lubrication
in the event the full flow filter is plugged.
Te c hFact
Lower Vent Positioning Sensor
Carrier Transicold now offers a vent position sensor
(VPS) option for the lower fresh air makeup vent. This
option, like the upper VPS, adds the ability to record
the position of the vent in the Datacorder. However, the
lower vent position sensor option is only compatible
with units equipped with the new ML3 controller as an
OEM option.
General Overview:The lower VPS option functions
the same as the upper VPS.  Scrolling to Function Code
45 will display the  Fresh Air Vent Position. The dis-
play will be in either CFM (English) or CMH (Metric),
depending on the setting of code select 28. To display
the alternate reading, press the degree C/F key on the
keypad. Once released, the display will return to the
previous setting. Note, some units are permanently con-
figured to one setting or the other. On these units, code
select 28 cannot be changed.  
The vent position will display for 30 seconds whenever
motion corresponding to 5 CMH (3 CFM) or greater 
is detected. It will display in intervals of 5 CMH 
(3 CFM). 
One difference of the lower VPS option is that there are
2 scales, which will be displayed based on Function
Code 34.If the reefer unit is configured to economy
mode (code 34 ON), code 45 will display the
CFM/CMH setting as 
1/2the value when compared to 
normal mode operation (code 34 OFF).
Vent Position Sensor Calibration:(Only required if
and when a repair has been performed on the air make-
up slide, motor, or sensor)
The vent position sensor is calibrated using the keypad
as follows:
1. Remove the 2 nuts securing the air make-up panel 
slide to the unit.
2. Rotate the gear clockwiseuntil it stops.
3. Rotate 1/4 turn counter clockwise.
G. Barkowski
30-00323-00 Oil Filter
30-00304-00 Oil Filter 
						

							www.container.carrier.comEmergency 24 -Hour Technical Assistance
800-668-6283 (800-ONTO-CTD)
email: [email protected]
Please circulate this newsletter to all of your support personnel
P. Hoover
Lower Vent Positioning Sensor (cont)
4. Carefully reposition the slide onto the air make-up 
panel (gear is engaged with rail and gear did not 
move)
5. Position slide panel to full closed position.
6. Code select 45 will automatically display.  Press the 
Enter key and hold for 5 seconds.
7. After the enter key has been pressed ‘CAL’ for 
calibration is displayed.
8. Press the ALT MODE key on the display and hold 
for five seconds.
9. After the calibration has been completed, Code 45 
will display 0 CMH / CFM.
10. Reassemble the nuts and stake threads.
Software version 5127is required to operate this
option.
General
Warranty Lookup Feature
In November 2003, Carrier Transicold rolled out a new
feature within TransCentral.  This feature allows the
user the ability to lookup warranty information on a
unit by entering either the container number or the unit
serial number. 
This information has many uses. It can be used prior 
to filing a claim to assure that the unit is still under
warranty. 
It can be used to identify a unit’s serial number or con-
tainer number when you have only one of the numbers. 
If you have any questions with regards to accessing this
data please contact your Regional Service Engineer.
General
2004 School Schedule
Listed below is the planned schedule for Container
training courses being offered in 2004.  This 
information is also available on the Internet at 
http://www
.container.carrier.com/and click on the
Training tab.
G. Barkowski
Te c hLineis a publication of 
Carrier Transicold
Editor:Perry Hoover
Graphics & Publications:Don Mansfield
Contributors:Gary Barkowski, Gary Busse,
Perry Hoover, Zvonko Asprovski, Mark Rogers,
Shaun Bretherton, Phil Laros, Peter Tanner
Class
Date Program Location I.D.
MARCH
15 - 16 2-Da
yContainer/Genset Mombasa,Kenya834
22 - 26 1-Week ContainerQingdao,China 836
3/29 - 4/2 1-Week Container Vladivostok,Russia 859
APRIL
12 - 13 2-Da
yContainer/Genset Hamburg,Germany839
14 - 163-DayContainer Product
Update Hamburg,Germany840
18 - 22 1-Week Container Oman,Jordan 0402
19 - 23 1-Week ContainerRo tterd am,TheNetherlands 842
19 - 20 2-DayContainer/Genset Jakarta,Indonesia 841
26 - 28 3-DayContainer Liverpool,UK 844
MAY
10 - 14 1-Week Container Conce
pcion,Chile 845
17 - 21 1-Week Container San Jose,Costa Rica 849
17 - 19 3-DayContainer Chicago,IL 848
JU
NE
7 - 11 1-Week Container Veracruz,Mexico 853
7-8 2-Da
yContainer/GensetVancouver,British
Columbia 8 50
17 - 19 3-DayContainer Pusan,Korea 856
23 - 25 3-DayContainer Bangkok,Thailand 858
JULY / AUGUST
No courses scheduled
SEPTEMBER
13 - 15 3-Da
yContainerNorfolk,VA 861
13 - 17 1-Week Container Durban,South Africa 862
20 - 24 1-Week Container Luanda,Angola 865
27 - 29 3-DayContainer Valencia,Spain 866
OCTOBER
4 - 8 1-Week Container Ham
burg,Germany869
11 - 13 3-DayContainer Aarhus,Denmark 870
20 - 22 3-DayContainer Panama 872
25 - 27 3-DayC on tainer San tiago,Chile 873
NOVEMBER
1 - 5 1-Week Container Oakland,CA 874
8 - 10 3-DayContainer LongBeach,CA 877
8 - 10 3-DayContainer Shenzhen,China 878
15 - 17 3-DayContainer Guam 879
DECEMBER
1-3 3-Da
yContainer Montevideo,Uruguay880
6-101-Week Container Miami,FL
881