Thermo King 914970, Manual

Page: 41 / 186

41
Electronic Controls
TG-V Thermostat
The TG-V is a programmable microprocessor
controller that uses external relays. The TG-V
module is replaced as an assembly, no internal
repair is available.
For complete details, see the Microprocessor
Controller TG-V Operating and Setup Manual TK
40284.
Features of the TG-V Thermostat include:
Thermometer:
It displays the return air
temperature, and can be programmed to display
the optional discharge air temperature with 0.1
degree accuracy.
Thermostat:
It provides temperature control from
-20 to 80 F (-28 to 28 C), in 0.5 degree
increments.
Defrost Control:
When the evaporator coil is cold
enough for frost to form, defrost is automatically
initiated every 4 hours during pull-down until the
return air temperature is in range. At in-range
temperatures (between approximately 7 degrees
above and 7 degrees between point), the controller
is programmable for 2 to 16 hours in 2 hour
increments. Defrost interval is set at the factory
but can be reprogrammed by your Thermo King
Dealer. It can also be programmed to terminate
defrost at 30 or 45 minutes.
Fuel Saver:
It can be programmed to delay high
speed operation for optimum fuel economy.
Alarm:
It can detect and display up to four alarm
conditions including sensor, microprocessor, and
defrost termination failures.
The keypad and the Liquid Crystal Display (LCD)
allow the operator to operate the TG-V. The input
and output terminals on the back of the TG-V
monitor unit conditions and control unit functions.
1. LCD
2. Keypad
Figure 7: TG-V Thermostat
9072a
1
2