Maintenance - Siemens SINAMICS S120 Equipment Manual

11.3

Maintenance

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 connections, motor connections, busbars, lugs) and other connections (ground
connections, protective conductor connections, steel threaded connections).
Table 11- 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.
Air-cooled chassis power units
Manual, 07/2019, 6SL3097-4AE00-0BP9
Tightening torques for screw connections
Thread Ground connections, protective
conductor connections, steel
M3
M4
M5
M6
M8
M10
M12
M16
threaded connections
1.3 Nm
3 Nm
6 Nm
10 Nm
25 Nm
50 Nm
88 Nm
215 Nm
Maintenance and Servicing
11.3 Maintenance
Aluminum threaded connections,
plastic, busbars, lugs
0.8 Nm
1.8 Nm
3 Nm
6 Nm
13 Nm
25 Nm
50 Nm
115 Nm
429