Plastic dust or debris can form when the blade unit, sieve, and jar lid are slightly misaligned. To avoid this from happening, you need to assemble all parts correctly.
Follow these steps:
- Put the blade unit on the blade unit holder in the center of the jar. Avoid touching the blades as they are very sharp.
- Turn the jar lid upside down. Press the sieve securely into the jar lid.
- Put the jar lid (with the sieve inserted) on the jar. The jar has little grooves on its sides. Use them to guide the locking pins smoothly into the jar. Turn the jar lid clockwise until it locks into place.