Siemens SINAMICS G120 Hardware Installation Manual page 52

Operation, repair, and maintenance
6.3 Replacing fans
1. Switch off the converter's supply voltage.
2. Wait for 5 minutes until the DC link capacitors have been discharged.
3. Disconnect all of the cables from the Power Module.
4. Release the fan cover
5. Remove the fan cover
6. Remove the fan connector
7. Release the fan catches
8. Remove the fan from the device
9. Install the new fan in the inverse sequence.
You have replaced the fans.
Replacing fans on converters in frame size FSF
Proceed as follows to replace the fans:
50
① ②
,
③
④
⑤
⑥
Hardware Installation Manual, 04/2021, A5E36265179B-AB
PM250 Power Module