Siemens SINAMICS S120 Combi Manual page 67

Note
Shutting down the device in the event of contaminated external heat sinks
For components with external air cooling, the fan and the heat sinks can accumulate a lot of
pollution. If the cooling air requirement is not provided by the filter fan, the components
cannot output their specified power. This can cause the temperature monitoring function in
the components to respond.
• Check the fans and heat sinks for pollution at regular intervals and clean them when
necessary.
SINAMICS S120 Combi
Manual, 11/2017, 6SL3097-4AV00-0BP7
S120 Combi Power Modules
4.2 Safety instructions for Combi Power Modules
67