Carrier TRANSICOLD PrimeLINE 69NT40-571-001, Руководство по эксплуатации и обслуживанию, Страница: 56 / 186

T-372 4–20
4.6.11 Pre-Trip Data Recording
The DataCORDER will record the initiation of a pre-trip test (refer to Section 4.5 ) and the results of each test
included in pre-trip. The data is time-stamped and may be extracted via the Data Retrieval program. See Table 4–
10 for a description of the data stored in the DataCORDER for each corresponding pre-trip test.
4.6.12 USDA Cold Treatment
Sustained cold temperature has been employed as a post-harvest method for the control of fruit flies and other
insect genera. The commodity, insect species, treatment temperatures and exposure times are found in sections
T107, T108, and T109 of the USDA Treatment Manual.
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
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perature within one quarter degree Celsius of setpoint and record minute changes in product temperature within
the DataCORDER memory, thus meeting USDA criteria.
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 3-pin receptacles are for the probes. The 5-pin receptacle is for the Interrogator. The probe
receptacles are sized to accept plugs with tri-cam 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 dis
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plays USDA #1, #2, #3 and the supply and return air temperatures. Cold treatment recording is backed up by a bat
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tery so recording can continue if AC power is lost.
USDA / Message Trip Comment
A special feature in DataLINE allows the user to enter a USDA (or other) message in the header of a data report.
The maximum message length is 78 characters. Only one message will be recorded per day.
4.6.13 USDA Cold Treatment Procedure
The following is a summary of the steps required to initiate a USDA Cold Treatment.
If configured for USDA probes setup can be verified as follows (See
DataLine User manual 62-10629 for more
details):
1. Ensure the DataCorder is configured as follows:
a. Configuration Option is set for USDA probes and logging interval set for 60 minutes.
b. Sensor is set to “2 Averaged 3-USDA.”
c. The resolution is set to “Normal.”
Figure 4.11 DataCORDER Configuration Screen