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Unit Description
General Description
This manual covers the following Thermo King models:
• T-680R, T-880R and T-1080R with reciprocating
compressor.
• T-680S, T-880S and T-1080S with scroll compressor.
All units are microprocessor based transport temperature
control systems that use the Standard SR-3 Truck HMI
microcontroller to manage system functions.
All units are one-piece, front-mounted, diesel powered cooling
and heating systems designed for straight trucks. The unit
mounts on the front of a truck with the evaporator portion
protruding into the box. They are designed for use with
chlorine free refrigerants.
Units are offered as Model 30 or Model 50:
Model 30: Cooling and hot gas heating on engine operation.
Model 50: Cooling and hot gas heating on engine operation
and electric standby operation. Electric evaporator heaters are
optional.
Engine power for the unit is provided by a diesel engine.
Optional SmartPower electric standby power is provided by an
electric motor. A clutch on the diesel engine isolates the engine
during electric standby operation.
The continuous monitoring function of the SR-3
microprocessor optimizes the unit’s performance, reducing fuel
consumption and unit down time. The unit has a self check
feature that can be run before the daily distribution route to
identify possible malfunctions.
The built-in CYCLE-SENTRY, an exclusive Thermo King
feature, automatically starts and stops the unit according to
temperature demands.
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