Smart Reefer 3 (Sr-3) Control System; Cycle-Sentry Operation; Continuous Run Operation - Thermo King SLXi-100 Operator's Manual

• Provides a means of precise temperature control.

SMART REEFER 3 (SR-3) Control System

The SR-3 is a microprocessor control system designed for a transport
refrigeration system. The SR-3 integrates the following functions:
• Changing setpoint and operating mode
• Viewing gauge, sensor, and hourmeter readings
• Initiating Defrost cycles
• Viewing and clearing alarms
The microprocessor components are located inside the control box, which is
located inside the lower roadside service door. The microprocessor is
connected to a Human Machine Interface (HMI) Control Panel. It is used to
operate the unit. The HMI control panel is mounted on the face of the control
box. It is clearly visible through an opening in the lower roadside service
door.
See "Operating Instructions" for more information about the SR-3
Controller.
Depending on the air temperature in the trailer, as sensed by the
microprocessor Base Controller, the unit will typically operate in one of the
following modes.

CYCLE-SENTRY Operation

• High Speed Cool
• Low Speed Cool
• Null (Engine Off)
• Low Speed Heat
• High Speed Heat
• Defrost

Continuous Run Operation

In diesel operation the microprocessor will select the operating mode from
the following:
• High Speed Cool
• Low Speed Cool
• Low Speed Modulated Cool
TK 61452-2-OP-EN
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