User's Manual

Optional Equipment
DLT-V72 Series User Manual V2.74
164 / 189
14.2. Screen defroster (optional)
Some DLT-V72 models are optionally available with a screen defroster (containing “D”
in the model name, e.g. “DLT-V7210 D”.
Functional description
As soon as the internal temperature of the DLT-V72 device falls below 5°C, the screen
defroster is automatically activated and heats the front of the device. The front of the
device thus thaws more quickly when leaving cold stores, for example.
In terms of the ambient temperature, this means:
 The defroster is typically active at an ambient temperature of 0°C to -10°C.
This depends on how quickly the ambient temperature changes or how quickly
the DLT-V72 cools.
 Analogously, the screen defroster is typically deactivated again when the ambient
temperature rises to +10°C to +20°C.
The screen defroster has a heat output of approx. 30 Watts.
It does not work when the DLT-V72 is running on battery power.
It will switch off automatically if the internal device temperature is too high and cannot be
switched on manually using the front keys.
Notes for parking vehicles with DLT-V72 devices with Screen-Defroster option:
Do not park or store vehicles on which DLT-V72 devices with a Screen-Defroster and an
integrated UPS are installed in areas with ambient temperatures below 0°C.
If vehicles on which DLT-V72 devices with a Screen-Defroster and an integrated UPS
are installed are parked or stored for a significant length of time, disconnect the DLT-V72
from the vehicle battery.