Siemens SINAMICS S120 Combi Equipment Manual page 69

NOTICE
As a result of the external air cooling, the fan and the heat sinks can accumulate a lot of
dirt. This causes the temperature monitoring to respond in the S120 Combi Power Module.
Therefore, the fans and heat sink must be checked for pollution at regular intervals and, if
necessary, cleaned.
NOTICE
Operation without the line reactor is not permissible.
Note
After installation, the seal on the optional fan unit must be checked to ensure that it tightly
seals. Additional sealing can be used, if necessary.
SINAMICS S120 Combi
Manual, Edition 05.2010, 6SL3097-4AV00-0BP0
S120 Combi Power Modules
3.2 Safety information
69