Siemens SINAMICS S120 Equipment Manual page 263

Installation steps
For installation, carry out the above steps in reverse order.
CAUTION
The tightening torques specified in the table "Tightening torques for connecting current-
conducting parts" must be observed.
Carefully establish the plug connections and then ensure that they are secure.
The fiber optic cable plugs must be remounted at their original slot. Fiber optic cables and
sockets are accordingly labeled for correct assignment (U11, U21, U31).
When dealing with connectors with a lock, make sure that the locking lever is securely
engaged once connected.
The screw connections for the protective covers must only be tightened finger-tight.
S120 Cabinet Modules Equipment Manual
Manual, (GH5), 10/2008, A5E00427098A
Maintenance and servicing
6.4 Replacing components
263