Thermo King SR-2 SmartReefer2

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Section 2 – SR-2 Hardware Description

J13 – Remote Controller Connector – arranged by pin number ............................................................... 19

Screw Terminal Power Connections............................................................................................................ 19

Complete SR2 Control System............................................................................................................................. 20

Unit Sensors........................................................................................................................................................... 21

Air Temperature Sensors...................................................................................................................................... 21

Graded and Un-graded Air Temperature Sensors.......................................................................................... 21

Dual Sensors...................................................................................................................................................... 21

Dual Sensor Changes........................................................................................................................................ 21

Control and Display Return Air Sensors......................................................................................................... 22

Control and Display Discharge Air Sensors................................................................................................... 22

Coil Temperature Sensor .................................................................................................................................. 22

Ambient Temperature Sensor .......................................................................................................................... 22

Spare 1 Temperature Sensor............................................................................................................................ 22

CargoWatch Sensors ............................................................................................................................................ 23

Refrigeration Control Components ..................................................................................................................... 24

Discharge Pressure Transducer (DPT)............................................................................................................ 24

Suction Pressure Transducer (SPT) ................................................................................................................ 24

High Pressure Cutout Switch (HPCO) ............................................................................................................. 24

Pilot Solenoid (PS)............................................................................................................................................. 24

Electronic Throttling Valve (ETV)..................................................................................................................... 24

Hot Gas Solenoid (HG) ...................................................................................................................................... 25

Damper Solenoid (DS)....................................................................................................................................... 25

Damper Motor..................................................................................................................................................... 25

Engine Control Components................................................................................................................................26

Coolant Temperature Sensor ........................................................................................................................... 26

Coolant Level Sensor (CLS).............................................................................................................................. 26

Optical Switch................................................................................................................................................. 26

Magnetic Reed Switch ................................................................................................................................... 26

Oil Pressure Switch (LOPS).............................................................................................................................. 26

Oil Level Switch (OLS)....................................................................................................................................... 26

Flywheel Sensor (FW)........................................................................................................................................ 26

Intake Air Heater ................................................................................................................................................ 27

Starter Motor (SM).............................................................................................................................................. 27

Fuel Solenoid (FSH, FSP).................................................................................................................................. 27

High Speed Solenoid (HS)................................................................................................................................. 27

Alternator Frequency......................................................................................................................................... 27

Communication Ports ........................................................................................................................................... 28

CargoWatch Port................................................................................................................................................ 28

ServiceWatch Port ............................................................................................................................................. 28

Printer Port ......................................................................................................................................................... 28

Optional Electric Standby..................................................................................................................................... 29

Model 50 Features.............................................................................................................................................. 29

High Voltage Components................................................................................................................................30

Diesel/Electric Relay K5 .................................................................................................................................... 30

Heater Contactor HC.......................................................................................................................................... 30

Phase Detect Module......................................................................................................................................... 30

2-2

31 January 2005