Service and maintenance   
13.2 Replacing the fan 
  SINAMICS S120 Combi 
306  Manual, 11/2017, 6SL3097-4AV00-0BP7 
 
 
Safety instructions when replacing a fan 
 
Electric shock due to applied voltage or residual charge 
Switch off the power supply (400 VAC) before replacing the fan. 
A hazardous voltage is still present for up to 5 minutes after the power supply has been 
switched off.  
Contact with live parts can result in death or serious injury. 
•  Remove the device cover or the fan cover only after 5 minutes have elapsed. 
•  Check for zero voltage before removing the component. 
 
Electric shock when live parts are touched during fan replacement 
Contact with live parts while the fan is being replaced can result in death or serious injury. 
•  When removing the fan, you must observe the ESD regulations. 
•  Assign qualified personnel to install spare parts. 
 
Replacing the Internal fan on the S120 Combi Power Module 
When required, the internal S120 Combi fan can be replaced. It can be ordered as a spare 
part (Article number: 6SL3161-0JP00-0AA0). 
Removing the internal fan 
1.  Remove the S120 Combi front plate (see Section "Electrical connection of Motor Modules 
and DC-link components (Page 181)")