Siemens SINAMICS S120 Manual page 299

Installation steps
Installing is the same as removing, however in the reverse order.
NOTICE
Specifications for installation
The tightening torques specified in the table "Tightening torques for screw connections"
must be observed.
Carefully insert the plug connections and 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).
The procedure described here for replacing the power block refers to the module on the
right. The other modules are handled in the same way.
Cabinet Modules
Manual, 03/2013, A5E03263538A
Maintenance and servicing
6.4 Replacing components
297