Service manual

T -318
3-- 11
3.6.9 Pre-T rip Data Recording
The DataCORDER will record the initiation of a pre-trip
test (refer to paragraph 3.5) and the results of each of
the tests included in pre-trip. The data is time-stamped
and may be extracted via the Data Retrieval program.
Refer to Table 3-11 for a description of the data stored in
the DataCORDER for each corresponding pre-trip test.
3.6.10 DataCORDER Communications
Data retrieval from the DataCORDER can be
accomplished by using one of the following;
DataReader, DataLine/DataView or a communications
interface module.
NOTE
A DataReader, DataLine/DataView, or a com-
munications interface module display of Com-
munication Failed is caused by faulty data
transfer between the datacorder and the data
retrieval device. Common causes include:
1. Bad cable or connection between
DataCORDER and data retrieval device.
2. PC communication port(s) unavailable or
misassigned.
3. Chart Recorder Fuse (FCR) blown.
a. DataReader
The Carrier Transicold Data Reader (see Figure 3-6) is
a simple to operate hand held device designed to extract
data from the DataCORDER and then upload it to a
personal computer. The Data Reader has the ability to
store multiple data files. Refer to Data Retrieval manual
62-10629 for a more detailed explanation of the
DataReader.
DataReader
Figure 3-6 Data Reader
b. DataBANK
TM
Card
The DataBANK
TM
card is a PCMCIA card that
interfaces with the controller through the programming
slot and can download data at a much faster rate when
compared to the PC or DataReader . Files downloaded
to the DataBANK card files are accessible through an
Omni PC Card Drive. The files can then be viewed using
the DataLine software.
c DataLine
The DataLINE software for a personal computer is
supplied on both floppy disks and CD. This software
allows interrogation, configuration variable assignment,
screen view of the data, hard copy report generation,
cold treatment probe calibration, and file management.
Refer to Data Retrieval manual 62-10629 for a more
detailed explanation of the DataLINE interrogation
software. The DataLine manual may be found on the
Internet at www.container.carrier.com.
b. Communications Interface Module
The communications interface module is a slave
module which allows communication with a master
central monitoring station. The module will respond to
communication and return information over the main
power line. With a remote monitoring unit installed, all
functions and selectable features that are accessible at
the unit may be performed at the master station.
Retrieval of all DataCORDER reports may also be
performed. Refer to the master system technical
manual for further information.
3.6.11 USDA Cold Treatment
Sustained cold temperature has been employed as an
effective postharvest method for the control of
Mediterranean and certain other tropical fruit flies.
Exposing infested fruit to temperatures of 2.2 C (36 F)
or below for specific periods results in the mortality of
the various stages of this group of insects.
In response to the demand to replace fumigation with
this environmentally sound process, Carrier has
integrated Cold Treatment capability into its
microprocessor system. These units have the ability to
maintain supply air temperature within one-quarter
degree Celsius of setpoint and record minute changes
in product temperature within the DataCORDER
memory, thus meeting USDA criteria. Information on
USDA is provided in the following subparagraphs
a. USDA Recording
A special type of recording is used for USDA cold
treatment purposes. Cold treatment recording requires
three remote temperature probes be placed at
prescribed locations in the cargo. Provision is made to
connect these probes to the DataCORDER via
receptacles located at the rear left-hand side of the unit.
Four or five receptacles are provided. The four three-pin
receptacles are for the probes and fifth, five-pin,
receptacle is the rear connection for the the Interrogator .
The probe receptacles are sized to accept plugs with
tricam coupling locking devices. A label on the back
panel of the unit shows which receptacle is used for
each probe.
The standard DataCORDER report displays the supply
and return air temperatures. The cold treatment report
displays USDA #1, #2, #3, and the supply and return air
temperatures. Cold treatment recording is backed up by
a battery so recording can continue if AC power is lost.
b. USDA/ Message T rip Comment
A special feature is incorporated which allows the user
to enter a USDA (or other) message at the head of a
data report. The maximum message length is 78
characters. Only one message will be recorded per day.
3.6.12 USDA Cold T reatment Procedure
The following is a summary of the steps required to
initiate a USDA Cold Treatment:
a. Calibrate the three USDA probes by ice bathing the
probes and performing the calibration function with
the DataReader or a personal computer. This calibra-
tion procedure determines the probe offsets and
stores them in the controller for use in generating the
cold treatment report. Refer to the Data Retrieval
manual 62-10629 for more details.