Sterlco HDG Series Heavy Duty Granulators - Manual (Page 30)

Bulletin Number Chapter 6: Troubleshooting 30 of 36
6-4 Mechanical Faults
Problem Possible Cause Possible Remedy
Bearing overheating Excessive tension on belt drive Check tension of belt and adjust
as necessary
Lubrication fault Check lubrication frequency
and recommended lubricant
Visible cracks in knife Incorrect grinding or grinding
procedure Check method of grinding and
contact our technical sales
department
Knives moving on knife seats Uneven knife seat surfaces Clean up to provide maximum
bearing surface
Loose knife screws Knife screws should not be
used more than six times.
Replace if there is evidence of
stretch
Knives breaking Cracks caused by incorrect
grinding Contact our technical sales
department
Excessive knife wear Open knife setting Re-set knives
Screen breakage Incorrectly seated screen Check that the screen is seated
correctly and fully in its cradle