SCALANCE W778-1 / W738-1
Operating Instructions, 03/2022, C79000-G8976-C450-07
9
Safety notices
2
CAUTION
To prevent injury and damage, read the manual before using the device.
Read the safety notices
Note the following safety notices. These relate to the entire working life of the device.
You should also read the safety notices relating to handling in the individual sections,
particularly in the sections "Installation" and "Connecting up".
WARNING
Hot surfaces
Electric devices have hot surfaces. Do not touch these surfaces. They could cause
severe burns.
•
Allow the device to cool down before starting any work on it.
WARNING
EXPLOSION HAZARD
Do not open the device when the supply voltage is turned on.