Carrier TRANSICOLD VECTOR 8100, Operation & Service Manual, Page: 57 / 294

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3.6 PRETRIP
Pretrip is a set of tests run by the control system to check unit operation. It is recommended that a Pretrip is run
prior to loading the refrigerated compartment. It will indicate a failure if one is detected.
TIP
A Pretrip can be started at any box temperature. If Pretrip is started while the unit is in a Start-Stop off
cycle the unit will start during the course of the test. If the unit is running when Pretrip is started, it will
shutdown for the first three tests.
If “CAN NOT START PRETRIP” is displayed in the MessageCenter, check to see if the unit is in PC
mode (Refer to
Section 5.3.2 ) or Defrost mode, or check the alarm list ( Section 3.15 ) for active shut-
down alarms.
NOTE
Pretrip will run until completed, unless an alarm occurs that causes Pretrip to be aborted. Only alarms
that will result in other erroneous alarms or will affect future Pretrip tests will abort Pretrip.
Once Pretrip is started: If the unit is running, the control system will shut the unit down for the initial tests, then start
it again as it proceeds through the tests.
NOTE
Before completing Pretrip, the control system looks at the status of alarms and if certain alarms are
active, Pretrip will display “FAILED”, indicating that the unit is not ready to be sent out for a load, but
that the alarm list should be checked and all present alarm situations corrected.
1. With the system powered up (START/RUN-OFF switch in the START/RUN position), press the MENU key
until PRETRIP is displayed.
2. Press the PRETRIP soft key to display the Pretrip Menu screen. The Pretrip Menu screen will display with a
15 second timeout. Press the
▲
or
▼
key to select “Start Pretrip” then press the “=” key.
START/STOP ELECTRIC COOL
Viewing Menu Soft Key
INTELLISET PRETRIP HOUR
METER
UNIT
DATA
Selections
Press Menu Key to Scroll
2
1
PRETRIP MENU
START PRETRIP
VIEW RESULTS OF LAST PRETRIP
BACK EXIT
PRETRIP STATUS
PRETRIP TYPE: COOL - AMBIENT 75
o
F
TEST 2 OF 10 - CURRENT TEST
TEST STOP UNIT
RESULTS PRETRIP DATA
23%
LIV
CURRENT DRAW - 2 AMPS
3