Page 24 of 26 7/9/19
PROBLEM - LOOSE PULLEYS
1
POSSIBLE CAUSE - Set screws are loose.
SUGGESTED REMEDY - Check set screws the first time the mill is operated and periodically thereafter.
2 POSSIBLE CAUSE - Key is worn or missing.
SUGGESTED REMEDY - Replace defective or missing keys.
3 POSSIBLE CAUSE - Pulleys are out of alignment.
SUGGESTED REMEDY - Realign pulleys so they are all parallel.
4 POSSIBLE CAUSE - Bushings are loose.
SUGGESTED REMEDY - Check all bolts and tighten if needed.
PROBLEM - GRAIN TOO FINE OR DUSTING OF GRAIN
1
POSSIBLE CAUSE - Over Rolling. Rolls are set too close together.
SUGGESTED REMEDY - Adjust spacing of rolls. (See Roll Spacing, Page 6)
2 POSSIBLE CAUSE - Rolling Mixed Grain.
SUGGESTED REMEDY - If mixed grain or different sizes are run together, to crack or crimp the smaller grain, the rolls
“over-roll” or pulverize larger kernels. As a general rule, all grains should be rolled separately and then mixed.
3 POSSIBLE CAUSE - Failure to reset rolls for different varieties of grain.
SUGGESTED REMEDY - Always reset roll spacing each time a different grain is to be processed.
4 POSSIBLE CAUSE - Very dry or particularly hard grain.
SUGGESTED REMEDY - Open roll spacing wider than normal to eliminate over-rolling. In extreme cases, grain can be
tempered by sprinkling a small amount of water over the grain to be rolled and letting it stand 8 to 12 hours. The
amount of moisture needed depends on the dryness of the grain.
PROBLEM - ABNORMAL POWER REQUIREMENT
1
POSSIBLE CAUSE - High Moisture Grain (Overload on mill)
SUGGESTED REMEDY - Running damp, high moisture grain can cause it to “stick to the rolls,” and require an
abnormal amount of power on new mills. Dry grain may stick to new rolls also, particularly when rolling oats or
barley. This condition should not continue after rolling 200-300 bushels of grain.
2 POSSIBLE CAUSE - Opening hopper gate too fast or too far.
SUGGESTED REMEDY - Always open gate slowly and only as far as necessary to keep rolls “hungry”. Do not
overfeed rolls and cause an excess build up of grain between the rolls. Feed only as much as the rolls will readily
take.
TROUBLESHOOTING
