GRAM KSU 3136-50/1 - Manual (Page 76)

Dear customer,
Your product has been produced in modern plants and checked under the most
meticulous quality control and we hope that your product, will provide you with an
effective service.
We recommend you to carefully read the entire user guide before using your
product and to keep the user guide at hand for future references.
This user guide
Please note that this user guide may be valid for other models as well.
Symbols and their descriptions
This user guide contains the following symbols:
C
Important information or useful tips.
A
Warning against dangerous conditions for life and property.
B
Warning against electric voltage.