Unit Description
20
Defrost can be initiated at any time the evaporator coil
temperature is below 42 F (5.5 C).
There are two methods of defrost initiation:
TSR/TSR-3 Microprocessor Controller
The Microprocessor Controller is programmed to
automatically initiate timed and forced defrost cycles. The
TSR/TSR-3 uses temperature sensors to determine if forced
defrost is required.
Manual Defrost
Manual Defrost allows the operator to initiate a defrost cycle
by pressing the Defrost key. See “Initiating a Manual Defrost
Cycle.”
DAS - Data Acquisition System
NOTE: (Optional )(Not available on T-500R)
The DAS (Data Acquisition System) monitors and records the
temperatures of (up to) six additional sensors. The sensors are
independent from the microprocessor controller and are
normally located in the truck box to monitor load temperatures.
DAS data can be downloaded through a serial port to an IBM®
PC compatible computer. WinTrac™ 4.8 (or higher) software
is used to view and analyze the data. Brief reports can be
printed on a microprinter connected to the serial port.
Electric Standby
NOTE: (Model 50 Units Only)
The Electric Standby option allows the unit to be operated on
either the diesel engine or external electric power. During
Electric Standby operation, power to the unit is supplied by an
electric motor connected to a high voltage power source.
Check the unit for proper power source ratings.
Electric Power Receptacle
The electric power receptacle is used to connect the unit to an
appropriate electric power source for electric standby
operation. Turn the unit OFF before connecting or
disconnecting the power cord.
