Thermo King SB-190 30, Manual

Page: 19 / 119

9
Unit Description
The unit is a one-piece, self-contained, diesel powered
refrigeration-heating unit. The unit mounts on the front of
the trailer with the evaporator portion extending into the
trailer. There is one basic model: Model 30: Cool, hot gas
heat and defrost on engine operation.
During engine operation power is provided by the se 2.2; a
four-cylinder, water-cooled, direct injection diesel engine
with a continuous power rating of 20.7 kW (34.8 hp) @
2200 rpm. The engine uses a spin-on, duel element, full
flow/bypass oil filter and “CF-4/CG-4” rated petroleum
engine oil for extended 1,500 hours maintenance intervals.
The compressor is connected directly to the engine.
SMART REEFER µP-VI Microprocessor
The SMART REEFER µP-VI is a microprocessor control
system designed for a transport refrigeration system. The
µP-VI integrates the following functions: thermostat, digital
thermometer, hourmeters, oil pressure condition, water tem-
perature, ammeter, voltmeter, tachometer, mode indicator,
refrigeration system controller, discharge and suction pres-
sure sensors, and diagnostic system.
The CYCLE-SENTRY system and integral defrost timer,
are standard features. Remote controls, data logging, and
remote status lights are optional features.
The microprocessor mounts inside a weather tight control
box. The LCD display is visible through a transparent cover.
Opening the keypad door provides quick access to the
microprocessor keypad. The keypad is used to control the
operation of the microprocessor.
CYCLE-SENTRY Start-Stop Controls
A CYCLE-SENTRY Start-Stop fuel saving system provides
optimum operating economy. Selecting Continuous or
CYCLE-SENTRY operation (on units equipped with
CYCLE-SENTRY) is accomplished using the microproces-
sor keypad.
WARNING: With the unit On/Off switch in the ON
position, the unit may start at anytime without prior
warning.
NOTE: A buzzer sounds when the unit is automatically
preheating.
NOTE: The microprocessor has an OptiSet™ feature that
can lockout CYCLE-SENTRY operation and force Con-
tinuous Run within a programmable range of setpoints. If
this feature is active and the setpoint is within the pro-
grammed lockout range, the CYCLE-SENTRY symbol will
not appear while the unit is automatically starting. The
unit will operate in Continuous Run as long as the set-
point is within the programmed lockout range. Refer to the
appropriate THERMOGUARD Microprocessor Controller
Operation & Diagnostic Manual for specific information
about the OptiSet™ feature.
The CYCLE-SENTRY system automatically starts the unit
on microprocessor demand, and shuts down the unit when
all demands are satisfied. As well as maintaining the box
temperature, engine block temperature and battery charge
levels are monitored and maintained. If the block tempera-
ture falls below 30 F (-1 C), the engine will start and run
until the block temperature is above 90 F (32 C). If the bat-
tery voltage falls to the programmed limit selected by
CYCLE-SENTRY Battery Voltage (typically 12.2 volts)
and Diesel CYCLE-SENTRY mode is selected, the engine
will start and run until the charge rate falls below that pro-
grammed by CYCLE-SENTRY Amps (typically 5
amperes).