Carrier 69NT40-561-201, Operation & Service Manual, Page: 74 / 117

T-364 4 − 3
4.5.2 Stopping the Unit
To stop the unit, place the START − STOP switch in posi-
tion “0” (OFF).
4.6 START − UP INSPECTION
4.6.1 Physical Inspection
Check rotation of condenser and evaporator fans.
4.6.2 Check Controller Function Codes
Check, and if required, reset controller Function Codes
(Cd27 through Cd39) in accordance with desired
operating parameters. Refer to Table 3 − 5.
4.6.3 Start Temperature Recorder
DataCORDER
a. Check and, if required, set the DataCORDER Config-
uration in accordance with desired recording parame-
ter. Refer to paragraph 3.7.3.
b. Enter a “Trip Start.” To enter a “Trip Start,” do the fol-
lowing:
1. Depress the ALT MODE key. When the left display
shows, dC, depress the ENTER key.
2. Scroll to Code dC30.
3. Depress and hold the ENTER key for five seconds.
4. The “Trip Start” event will be entered in the Data-
CORDER.
4.6.4 Complete Inspection
Allow the unit to run for five minutes to stabilize condi-
tions, and then perform a Pre − trip diagnosis in accor-
dance with Section 4.7.
4.7 PRE − TRIP DIAGNOSIS
CAUTION
Pre − trip inspection should not be per-
formed with critical temperature cargoes in
the container.
CAUTION
When Pre − trip key is pressed, economy and
dehumidification will be deactivated. At the
completion of Pre − trip activity, economy
and dehumidification must be reactivated.
Pre − trip diagnosis provides automatic testing of the unit
components using internal measurements and
comparison logic. The program will provide a “PASS” or
“FAIL” display to indicate test results.
The testing begins with access to a Pre − trip selection
menu. The user may have the option of selecting one of
two automatic tests.
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.
When only the short sequence is configured, it will
appear as “AUtO” in the display. Otherwise “AUtO1” will
indicate the short sequence and “AUtO2” will indicate
the long sequence. The test short sequence will run
tests P0 through P6. The long test sequence will run
tests P0 through P10.
A detailed description of the Pre − trip test codes is listed
in Table 3 − 7, page 3 − 34. If no selection is made, the
Pre − trip menu selection process will terminate
automatically. However, dehumidification and bulb
mode must be reactivated manually if required.
Scrolling down to the “rSLts” code and pressing ENTER
will allow the user to scroll through the results of the last
Pre − trip testing run. If no Pre − testing has been run (or
an individual test has not been run) since the unit was
powered up, “ −−−− ” will be displayed.
To start a Pre − trip test, do the following:
NOTE
1. Prior to starting a Pre − trip test, verify that
unit voltage (Cd07) is within tolerance and
unit amperage draw (Cd04, Cd05, Cd06)
are within expected limits. Otherwise, tests
may fail incorrectly.
2. All alarms must be rectified and cleared
before starting tests.
3. Pre − trip may also be initiated via
communications. The operation is the
same as for the keypad initiation described
below except that should a test fail, the
Pre − trip mode will automatically terminate.
When initiated via communications, a
Pre − trip test may not be interrupted with an
arrow key, but the Pre − trip test can be
terminated with the PRE − TRIP key.
a. Press the PRE − TRIP key to accesses the Pre − trip
test selection menu.
b. TO RUN AN AUTOMATIC TEST: Scroll through the
selections by pressing the UP ARROW or DOWN
ARROW keys to display AUTO, AUTO 1, AUTO 2 or
AUTO 3 as desired, then press ENTER.
1. The unit will execute the series of tests without any
need for direct user interface. These tests vary in
length, depending on the component under test.
2. While tests are running, “P# − #” will appear on the
left display; the #’s indicate the test number and
sub − test. The right display will show a countdown
time in minutes and seconds, indicating the
amount of time remaining in the test.