Siemens SINAMICS S120 - Visual Inspections; Tools Required; Torques

Maintenance intervals of the components
Table 8-1
Maintenance intervals
Component Review Replacement
Coolant Annually After ten years
Cooling hoses Regularly, at least every three
months
After six years
Fan Regularly, at least every three
months
After approximately 50,000 operating hours
Gaskets Regularly, at least every three
months
After six years
Filter See the notes in the cooling unit operating instructions
Pumps See the notes in the cooling unit operating instructions
8.2.3 Visual inspections
8.2.3.1
Tools required
You will need the following tools:
● Standard set of tools with screwdrivers, screw wrenches, socket wrenches, etc.
● Torque wrenches from 1.5 Nm up to 100 Nm
● 600 mm extension for socket wrenches
8.2.3.2 Torques
The following tightening torques apply when tightening current-conducting connections, e.g.
DC-link connections, motor connections, busbars, lugs and other connections (for example
ground connections, protective conductor connections, steel threaded connections/glands).
Table 8-2 Tightening torques for screw connections
Thread Ground connections, protective
conductor connections, steel threa‐
ded connections
Aluminum threaded connections,
plastic, busbars, lugs
M3 1.3 Nm 0.8 Nm
M4 3 Nm 1.8 Nm
M5 6 Nm 3 Nm
M6 10 Nm 6 Nm
M8 25 Nm 13 Nm
M10 50 Nm 25 Nm
M12 88 Nm 50 Nm
M16 215 Nm 115 Nm
Servicing
8.2 Preventive maintenance
Applications for Cabinet Modules, liquid cooled
108 Operating Instructions, 04/2015, A5E35974555A