Pre-Trip Data Recording; Datacorder Communications; Usda Cold Treatment - Carrier 69NT40-541-500 Operation And Service Manual

During DataCORDER power-up, while using battery-pack power, the controller will perform a hardware voltage
check on the battery. If the hardware check passes, the Controller will energize and perform a software battery volt-
age check before DataCORDER logging. If either test fails, the real-time clock battery power-up will be disabled
until the next AC power cycle. Further DataCORDER temperature logging will be prohibited until that time.
An alarm will be generated when the battery voltage transitions from good to bad indicating that the battery pack
needs recharging. If the alarm condition persists for more than 24 hours on continuous AC power, the battery pack
needs replacement.
4.8.8

Pre-trip Data Recording

The DataCORDER will record the initiation of a Pre-trip test (refer to
tests included in pre-trip. The data is time-stamped and may be extracted via the Data Retrieval program. Refer to
Table 4–9 for a description of the data stored in the DataCORDER for each corresponding pre-trip test.
4.8.9

DataCORDER Communications

Data retrieval from the DataCORDER can be accomplished by using the DataLINE, DataBANK Card, or a commu-
nications interface module.
A DataLINE or a communications interface module display of Communication 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 mis-assigned.
Communication identification for the models covered herein may be obtained on the Container Products Group
Information Center by authorized Carrier Transicold Service Centers.
a 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 treat-
ment probe calibration, and file management. Refer to Data Retrieval manual 62-10629 for a more detailed expla-
nation of the DataLINE interrogation software. The DataLine manual may be found on the Internet at
www.container.carrier.com.
c. DataBANK Card
The DataBANK™card is a PCMCIA card that interfaces with the controller through the programming slot and can
download data at a fast rate. Files downloaded to DataBANK card files are accessible through an Omni PC Card
Drive. The files can then be viewed using the DataLINE software.
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 moni-
toring 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 fur-
ther information.
4.8.10

USDA Cold Treatment

Sustained cold temperature has been employed as an effective post harvest method for the control of Mediterra-
nean and certain other tropical fruit flies. Exposing infested fruit to temperatures of 2.2°C (36°F) or below for spe-
cific 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 tem-
perature 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 subpara-
graphs
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 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.
Section
NOTE
4–21
4.7) and the results of each of the
T-363