Safety Information  11 
 
Risks of a Disconnected Protective Lead 
The device can be hazardous if the protective lead is interrupted inside or 
outside the device or if the protective lead is disconnected. 
Risks Involved in Opening the Covers 
Current-bearing components can be exposed when the covers or parts 
are removed, even if this can be done without tools. Current can be 
present at some connection points. 
Risks Involved in Working with an Open Device 
All work on a device that is open and connected to power should only be 
performed by trained personnel who are familiar with the risks involved. 
When Safe Operation can no Longer be Assured 
If it is apparent that safe operation is no longer possible, the device 
should be taken out of operation and secured against unauthorized use. 
The possibility of safe operation is excluded: 
  If the device is visibly damaged, 
  If the device no longer operates, 
  After prolonged storage under adverse conditions, 
  After severe transport stresses.