To access the decompression ball:
1 Remove the metal lid by unscrewing the nut in an anti-clockwise direction.
2 Remove the ball casing by turning it, then gently clean the ball with water and washing up liquid, without using any metal utensils which may damage it.
3 Dry the ball and its housing using a soft cloth
Before returning the ball to the appliance, check for obstructions in the tube by blowing into it.