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84 Maintenance
Replacing the cooling fan of the converter module
WARNING! Only qualified electricians are allowed to do this work. Read the
complete safety instructions of the converter. If you ignore the instructions,
physical injury, death, or damage to the equipment can occur.
1. Disconnect the converter from the all power sources and make sure it is safe to start
the work. See the safety instructions.
2. Cooling fan of the converter module (a) is located on top of the module. Open the door
of the converter module cubicle and remove the shroud in front of the fan.
3. Disconnect the wiring plug of the fan (b).
4. Remove the fastening screws (c) of the fan support.
5. Lift the fan unit out of the cabinet.
6. Detach the fan from the support plate by loosening the fastening screws of the fan.The
fan grille is detached then too.
7. Install a new fan in reverse order. Check that the air flow direction is correct (an arrow
indicating the direction is marked on the side of the fan). Remember to install the fan
grille before lifting the fan into the cabinet.
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