Servicing - Siemens Sinamics S120 Manual

Maintenance and servicing

10.3 Servicing

10.3 Servicing
Servicing involves activities and procedures for maintaining and restoring the specified
condition of the devices.
Required tools
The following tools are required for replacing components:
● Standard set of tools with screwdrivers, screw wrenches, socket wrenches, etc.
● Torque wrenches 1.5 Nm up to 100 Nm
● 600 mm extension for socket wrenches
Tightening torques for screw connections
The following tightening torques apply when tightening current-conducting connections (DC
link, motor connections, busbars, cable lugs) and other connections (ground connections, PE
connections).
Table 10- 1
Note
Screw connections for protective covers
The threaded connections for the protective covers made of Makrolon may only be tightened
with 2.5 Nm.
352
Tightening torques for screw connections
Thread Ground connections, PE connec-
tions, steel threaded connections
M3
M4
M5
M6
M8
M10
M12
M16
Aluminum threaded connections,
1.3 Nm
3 Nm
6 Nm
10 Nm
25 Nm
50 Nm
88 Nm
215 Nm
Manual, (GH7), 11/2016, 6SL3097-4AM00-0BP7
plastic, busbars, cable lugs
0.8 Nm
1.8 Nm
3 Nm
6 Nm
13 Nm
25 Nm
50 Nm
115 Nm
Liquid-cooled chassis power units