Sterlco HDG Series Heavy Duty Granulators - Manual (Page 29)

Bulletin Number Chapter 6: Troubleshooting 29 of 36
6-3 Processing Faults
Problem Possible Cause Possible Remedy
Stalling Overfeeding Reduce feed rate
Partial or complete screen
blockage Remove screen, clear and
inspect for damage
Insufficient tension on v-belt
drive causing belt slip and
burning Check tension of the belt and
adjust as necessary
Badly blunted or damaged
knives Fit re-sharpened or new knives
as required
Knife setting too wide Check clearances given and
adjust as required
Installation fault; motor running
in reverse direction Check with direction arrow and
re-fit electrical connections to
give the correct direction
Safety switch cut out where
fitted Tighten safety switch setting
screw
Material overheating Check all possible causes under
“stalling” Remedy as shown above
Screen size too small Increase screen size
When granulating rubber,
insufficient talc causes freshly
cut surfaces to re-adhere Increase talc percentage rate of
infeed
Blockage in airveyor Check direction of fan rotation,
check venture and line or chute
for blockage