>  Reason:

> Solution:

• They have been produced in the very
  moment when the pellet is leaving the die.
  The knife is too far away from the die and
  performs a twisting action instead of a
  cutting action on the pellet

• Increase the compression in the die
• Finer milling is required
• Improve the mixing of the molasses or of the grease
• Use binders

>  Reason:

> Solution:

• This is possible when pelletizing fibrous
  mixtures. The breakdowns are located in
  the introduction area of the new mixture at
  every turn of the die.

• Increase the compression in the die
• Check better the length of the fibres
• Decrease the production allowing a longer stay time in the conditioner
• Inspection of the condense drai nage system owing to probable presence of water in the steam

>  Reason:

> Solution:

• They take place if light and elastic mixtures
  are involved, which lean to expanding after
  milling

• Increase density by varying the formula
• Condition with dry steam
• Increase the stay time in the die
• More compression
• Use binders

>  Reason:

> Solution:

• The pellet contains parts of large dimension

• Reduce section of the grains by milling them finer
• Increase the stay time in the conditioner

>  Reason:

> Solution:

• The pellet contains particles having a large
  section which have by-passed the milling or
  that have come back from the sieving

• Improve the inspection of the mixture

>  Reason:

> Solution:

• Excess of steam

• Check the conditioning
• Rectify the pressure of the steam
• Rectify the position of the pressure reducing valve