A whistling sound from your MOULINEX EASY SOUP LM841B blender during blending can have several causes:
1. Steam Escape
When preparing hot soups, the steam generated can escape through the lid's openings, producing a whistling sound. Check that the lid is properly closed and that the seal is in good condition to allow for proper steam release.
2. Too Hard or Excessive Ingredients
Hard chunks or overfilling can strain the motor and cause unusual noises, including whistling. It is advisable to cut ingredients into smaller pieces and not exceed the maximum capacity indicated.
3. Wear or Mechanical Issue with the Motor
A persistent and abnormal whistling may indicate a mechanical issue, such as bearing wear or a motor malfunction. If the noise does not go away after checking the previous points, it is best to stop the device and consult an authorized service center to avoid further damage.
In summary, a whistling sound can be normal in the case of steam escape, but if it is continuous or accompanied by other abnormal signs, a technical check is recommended.