Thermo King SB-190 30, Manual

Page: 37 / 119

Operating Instructions (Rev. 12/03)
27
c. Press the ENTER key while PRE TRIP is dis-
played.
• PRE LOAD will appear on the display and the
PRE TRIP test will start.
• PRE AMPS will appear on the display indicat-
ing that the amps check is running and the
PRE TRIP has started.
• The amps check will continue for several min-
utes, then the unit will start automatically and
the operational tests will be performed.
4. When the PRE TRIP test is complete, PASS, CHECK,
or FAIL will appear on the display until a function key
(e.g., SELECT or ENTER) is pressed. Continue as fol-
lows:
• PASS—The unit is running and no alarms have
been recorded. The unit has passed the PRE TRIP.
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 CODE key (refer to the
appropriate Operation and Diagnosis Manual for
detailed information about alarms).
a. Correct the alarm conditions.
b. Clear the alarms with the CLEAR key (refer to the
appropriate Operation and Diagnosis Manual for
detailed information about alarms).
c. Repeat the PRE TRIP test until PASS appears (the
unit passes the Pretrip).
6. Recheck the setpoint.
7. Complete the “After Start Inspection” on page 28.
Selection of Operating Modes
The Thermo King CYCLE-SENTRY system is designed to
save refrigeration fuel costs. The savings vary with the com-
modity, ambient temperatures and trailer insulation. How-
ever, not all temperature controlled products can be properly
transported using CYCLE-SENTRY operation. Certain
highly sensitive products normally require continuous air
circulation.
• The microprocessor has a CYCLS screen, which is
used to select CYCLE-SENTRY (CYCLS YES) or
Continuous Run (CYCLS No) operation. Refer to the
appropriate Operator’s Manual or Operation and Diag-
nosis Manual for detailed information about CYCLE-
SENTRY selection.
• The microprocessor has an OptiSet™ feature that can
lockout CYCLE-SENTRY operation and force Contin-
uous Run operation within a programmable range of
setpoints. This feature can be used to provide continu-
ous air circulation (within the programmed setpoint
range) during CYCLE-SENTRY operation. Refer to the
appropriate Operator’s Manual or Operation and Diag-
nosis Manual for specific information about the
OptiSet™ feature.