Siemens SIMATIC Box PC 620 Manual page 65

Before Opening the Unit
Note the following rules before opening the unit:
S Before you disconnect the power supply cable, discharge any electrostatic
charge on your body. You can do this by touching the metal mounting plate for
the interfaces on the left-hand side panel of the unit.
S Discharge any electrostatic charge from tools that you are using.
S Wear a grounding wrist-strap if you are handling components.
S Leave components and modules in their packing until you are ready to install
them.
S Disconnect the SIMATIC Box PC 620 from its power supply and remove the
battery before plugging in or removing any modules or components.
S Touch components and modules only on their edges. Above all, do not touch
the connecting pins and printed conductors.
S Never operate the SIMATIC Box PC 620 with the cover open.
Tools
You can carry out all necessary installation work on the SIMATIC box PC 620 with
screwdrivers of the type TORX T10 and TORX T8.
SIMATIC Box PC 620 Manual
C79000-G7076-C639-04
SIMATIC Box PC 620 Expansions
5-3