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16.11
Replacing fans
16.11.1
Replace fan unit, converter with IP20 degree of protection
Overview
The fan unit at the top of the converter must be replaced if a fan is defective or if the fan has
reached its maximum operating period.
Precondition
Electric shock when live parts are touched
After the fan unit is removed, the live components of the converter are no longer protected
from being touched. Contact with live parts can result in death or serious injury.
• Before replacing the fan, switch off the power supply at terminals X1:L1, L2, L3.
• Check that the fan unit is de-energized before removing it.
• Wait until the discharge time specified on the warning labels has elapsed.
The following preconditions apply when the fan unit is replaced:
• Comply with ESD regulations.
• Only qualified personnel may replace the fan unit.
• The cables connected at the top of the converter are removed.
• Required tools:
– Torx screwdriver T20
– Slotted screwdriver, 0.8 x 5.5 mm
Procedure
The procedure to remove and install the fan unit is identical for all converter sizes. The fan unit
differs in terms of the size and the number of fans contained.
The following procedure describes removing and installing the fan unit using a converter,
frame size FSE as example.
SINAMICS G220 converter
Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB
WARNING
Corrective maintenance
16.11 Replacing fans
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