The Thermomix® sold in the USA is not designed or tested to be used with a converter. We do not recommend to use one as it may cause issues with the unit and we are only authorized to repair a 110v UL certified TM®.
If the base unit is connected to an unsuitable power supply, it will get damaged.
*Only operate the Thermomix® TM5®/TM6® with the alternating current voltage of 110/127 V and main frequency of 50 to 60 Hz, as indicated on the plug label