Carrier PrimeLINE 69NT40-561-200, Руководство по эксплуатации и обслуживанию

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T-362 4–42
4.5 Pre-Trip Diagnostics
Pre-Trip Diagnostics is an independent controller function that suspends normal refrigeration controller activities
and provides preprogrammed test routines. The test routine can be run in Auto Mode, which automatically
performs a pre programmed sequence of tests, or Manual Mode, which allows the operator to select and run any of
the individual tests.
CAUTION
!
Pre-trip inspection should not be performed with critical temperature cargoes in the container.
CAUTION
!
When the pre-trip key is pressed economy, dehumidification and Bulb Mode will be deactivated. At
the completion of the pre-trip test, economy, dehumidification and Bulb Mode must be reactivated.
A pre-trip test may be initiated by use of the keypad or via communication, but when initiated by communication the
controller will execute the entire battery of tests (auto mode).
At the end of a pre-trip test, the message “P,” “rSLts” (pretest results) will be displayed. Pressing ENTER will allow
the user to see the results for each of the sub-tests. The results will be displayed as “PASS” or “FAIL” for each test
run to completion.
A detailed description of the pre-trip tests and test codes is described in
Table 4–6 . Detailed operating instructions
are described in Section 5.8 .
4.5.1 Controller Pre-Trip Test Codes
The pre-trip selection menu provides the user the option of selecting one of two automatic tests (short sequence or
long sequence). These tests will automatically perform a series of individual pre-trip tests. The user may also scroll
down to select any of the individual tests.
The short pre-trip test sequence will appear as either “AUTO” or “AUTO1” in the display. This runs tests P0 through
P6, which includes most functions, sensors and system components.
The long pre-trip test sequence is selected by either “AUTO2” or “AUTO3” in the display. “AUTO2” runs tests P0
through P10 and “AUTO3” runs tests P0 through P8. The long test sequence includes all of the short sequence
tests and also tests for the high pressure switch, heater performance and cooling performance.
Table 4–6 Controller Pre-Trip Test Codes
Code Description
P0-0 Pre-Trip Initiated: Configuration Display, Indicator Lamps, LEDs, and Displays
Container identifier code, Cd18 Software Revision Number, Cd20 Container Unit Model Number, &
configuration database identifier CFMMYYDD are displayed in sequence.
Next the unit will indicate the presence or non-presence of an RMU according to whether any RMU
inquiry messages have been received since the unit was booted.
Units equipped with Autoslide Enabled (Cnf44) will cause the vent to seek to its closed position, followed
by two sequences of opening to 100% and returning to the closed position. No other autoslide mode of
operation will be available until the two cycles of opening and closing have completed.
Since the system cannot recognize lights and display failures, there are no test codes or results
associated with this phase of pre-trip. To know if the test passes the operator must observe that the LCD
display elements and the indicator lights behave as described below.
Heaters Current Draw: For P1 tests, the heater is turned on, then off. Current draw must fall within specified
range. No other system components will change state during this test.
P1-0 Heaters Turned On
Heater starts in the off condition, current draw is measured, and then the heater is turned on. After 15
seconds, the current draw is measured again. The change in current draw is then recorded.
Test passes if the change in current draw test is in the range specified.