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TK 61552-2-MM-EN
T6
Check GPS Antenna
TT99
Telematics System Issue
T7
No GPS Fix
OptiSet
™
™
The OptiSet
™
Temperature Management System allows up to ten different temperature ranges
to be defined and tailored for maximum operating efficiency, as determined by customer load
requirements. The term “OptiSet” refers to both the programmable ranges and the features that
can be tailored. OptiSet is programmed using the HMI Control Panel keypad.
Sequence of Operation
When the Microprocessor On/Off switch is turned on and Controller ON key is pressed, the LCD
display is illuminated and shows the setpoint and the return air temperature. If the CYCLE-
SENTRY mode has been selected, the unit will start and stop automatically. If the Continuous
mode has been selected, the unit will start and run automatically.
Operating Modes
The microprocessor uses a complex program to determine which operating mode the unit
should be in. Therefore, it is difficult to predict which operating mode the unit should be in by
comparing the setpoint to the box temperature.
The diesel engine operates at either low speed or high speed as determined by the
microprocessor. The unit will Cool or Heat in either high or low speed. The unit will Defrost in
low speed only. Heat and Defrost consists of hot gas delivered to the evaporator coil distributor.
E
En
ng
giin
ne
e O
Op
pe
erra
attiio
on
n
The microprocessor will select the operating mode from the following:
•
High Speed Cool
•
Low Speed Cool
•
Low Speed Modulated Cool
•
Null (CYCLE-SENTRY operation only)
•
Low Speed Modulated Heat
•
Low Speed Heat
•
High Speed Heat
•
Defrost
N
No
otte
ess::
1. ETV Operation and High Speed Heat is locked out if controller setpoint is below Fresh/
Frozen temperature setting
2.
ETV operation is locked out during CYCLE-SENTRY operation.
3. During Cycle Sentry Operation:
•
After initial unit start-up and unit pull-down to setpoint, the controller limits Low
Speed Cool operation when the controller setpoint is below Fresh/Frozen
temperature setting. On increasing compartment temperature, the unit operates in
Low Speed Cool for a maximum of 8 minutes in an attempt to reach setpoint. If
setpoint is not reached within 8 minutes, the unit will operate in High Speed Cool
until setpoint is reached
•
Unit mode is Null when the engine temperature and battery are satisfied.
•
Null mode if setpoint is below Fresh/Frozen temperature setting.
E
Elle
eccttrriicc O
Op
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The microprocessor will select the operating mode from the following:
•
Cool
•
Modulated Cool (Continuous operation only)
