Thermo King 002008, Manual

Page: 39 / 155

Operating Instructions
39
Starting Unit With Electronic Full
Pretrip Test
This procedure is used for a complete checkout of
the trailer, unit, and unit control circuits. It should
be used when first starting the unit for a trip
before the cargo is loaded. A full Pretrip test
procedure may take up to 30 minutes and the unit
will run unattended.
1. Perform a Manual Pretrip Inspection.
2. Adjust the setpoints to the desired load
temperatures (refer to the appropriate
Microprocessor Diagnosis Manual for detailed
information about adjusting the setpoints).
a. Use the
S
ELECT
key to display the Standard
Display for the zone whose setpoint is to
be changed.
b. Change the setpoint display with the
A
RROW
keys.
c. Enter the new setpoint by pressing the
E
NTER
key within 5 seconds.
3. Initiate a Pretrip Test (refer to the appropriate
Operator’s Manual or Microprocessor
Diagnosis Manual for detailed information
about the pretrip). This procedure is automatic
and can be performed on the way to the
loading area or while waiting to load.
a. Place all the On/Off switches in the On
position.
b. Clear any alarms.
c. Press and hold the
TK
key for at least 3
seconds.
• PRE TRIP will appear on the display.
d. Press the
E
NTER
key while PRE TRIP is
displayed.
• PRE LOAD will appear on the display
and the pretrip test will start.
• PRE AMPS will appear on the display
indicating that the amps check is
running and the pretrip has started.
• The amps check will continue for
several minutes, then the unit will start
automatically and the operational tests
will be performed.
4. When the Pretrip Test is complete, PASS,
CHECK, or FAIL will appear on the display
until a function key (e.g.,
S
ELECT
or
E
NTER
) is
pressed. Continue as follows:
• PASS—The unit is running and no alarms
have been recorded. The unit has passed
the pretrip. Go to step 6.
• CHECK—The unit is running but Check
Alarms have been recorded. Go to step 5.
• FAIL—The unit has shut down, recorded
Alarm Code 28, and possibly recorded
other Shutdown Alarms. Go to step 5.
5. View the Alarms with the
C
ODE
key (refer to
the appropriate Microprocessor Diagnosis
Manual for detailed information about
alarms).
a. Correct the alarm conditions.
b. Clear the alarms with the
C
LEAR
key (refer
to the appropriate Microprocessor
Diagnosis Manual for detailed information
about alarms).
c. Repeat the Pretrip Test until [PASS]
appears (the unit passes the pretrip).
6. Recheck the setpoints.
7. Complete the “After Start Inspection” on
page 41.
Selection of Operating Modes
The Thermo King CYCLE-SENTRY system is
designed to save refrigeration fuel costs. The
savings vary with the commodity, ambient
temperatures and trailer insulation. However, not
all temperature controlled products can be
properly transported using CYCLE-SENTRY
operation. Certain highly sensitive products
normally require continuous air circulation.
CAUTION: Monitor the return air
temperatures when performing a Pretrip
Test on a loaded trailer. The controller
may not maintain setpoints during the
Pretrip Test.