Removing the fan unit, FSD … FSF
Procedure
Proceed as follows to remove the fan unit:
1. Switch off the inverter power supply.
WARNING
Electric shock due to residual charge in power components
After the power supply has been switched off, it takes up to 5 min. until the capacitors in
the inverter have discharged so that the remaining charge is at a non-hazardous level.
● Check the voltage at the inverter connections before you carry out any installation work.
2. Remove the fan unit from the Power Module in steps ① and ② as shown in the diagram.
Use a screwdriver if necessary.
3. Additionally for PT devices:
Remove the interior fan as shown below.
Corrective maintenance
9.2 Replacing inverter components
SINAMICS G120C converter
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34263257B AF 387
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