10  SPECTRO ARCOS FHX22 ā 
 
2  Safety 
 
Every user of the instrument must have understood these operating instructions. 
This applies in particular to the safety regulations. 
 
2.1  Symbols used 
 
The following symbols are used in these abbreviated operating instructions and/or 
on the instrument. 
If required, additional important information is available in connection with these 
symbols. 
 
 
 
Warning of hazardous voltage! 
 
 
Warning of toxic substances! 
 
 
Warning! Optical radiation! 
 
 
Warning! Risk of suffocation!