Observation 1: Musty or spoiled grain odor.

Observation 2: Hard layer or core below grain if caked or surface. if airflow is spoiled grain.

Observation 3: Warm grain below the top surface.

Observation 4: Surface grain wet or slimy. Perhaps temperatures equal grain sticking or frozen together.

Observation 5: Under-roof condensation dripping  outdoor air onto surface.

Observation 6: Wet or spoiled spots on grain surface at night.surface outside center point.

Observation 7: Cooling time required much longer grain and exhaust air than usual.

 Problem 1:  Irregular wear

Problem 2: Corrosions of the holes

Problem 3: Too early breakdown

Problem 4: Too fast wear

Problem 5: The holes of the die are clogged

Problem 6: A used die does not produce

Problem 1: Irregular wear

Problem 2: Remarkable wear at the ands of the roll shells

Problem 3: Too short life of the rolls

Problem 1: Irregular feed.

Problem 2: Insufficient production with not full-load motor.

Problem 3: Insufficient production with full-load motor.

Problem 4: Remarkable variations in the absorption of power

Problem 5: Pellet  mill vibrates too much

Problem 6: The pellet mill does not vibrate but is noisy

Problem 7: The main bearings are noisy

Problem 1: Variable meal temperature at exit of conditioner?

Problem 2: Can’t get meal hot enough before choking die?

Problem 3: Can get meal hot enough but not sufficiently moist?

Problem 4: Wide fluctuation in amps?

Problem 5: Uneven pellet length?

Problem 6: Too much meal leaving die with pellets?

Problem 1: "Hang up" in vertical cooler?

Problem 2: Pellets too warm and moist at cooler exit?

Problem 3: Pellets cool and dry outside, warm and moist inside?