Sterlco BP800 Series Granulators - Manual (Page 32)

Chapter 6: Troubleshooting 32 of 41
Improper knife re-sharpening
Check dimensions with figures
included in this manual.
Abrasive material
Contact the supplier for special
knives
Abnormal screen wear
Incorrect fitting of screen
Check that the screen is
correctly seated in its rear
position and that it fits perfectly
at the front
Abrasive material
Contact the supplier for special
knives
Rotor jamming
Excessive in-feed material
Reduce amount of material
being fed to the machine
Total or partial obstruction of the
screen holes Remove the screen and clear
the holes
Insufficient belt tension Check and/or adjust belt tension
Knives worn Replace with new knives
Distance between the knives too
small or large
Check distance between knives
Screen holes too small Increase screen hole diameter
Failure of air conveying system
or discharge system Check fan rotation and make
sure pipes are not obstructed
Electrical Problems
Problem Possible Cause Possible Remedy
Machine stops for no apparent
reason
Safety switch has stopped
power
Check that the knobs that
operate the safety switch are
tightened
Electric motor does not start
No power Check fuses
Overload failure
Check amperage of electric
motor
Safety switch not working Check and replace
Cutting chamber too full Empty cutting chamber
Motor starts but does not speed
up or take a load
Excessive drive belt tension Check belt tension and adjust
Motor connected to power
source incorrectly
Reconnect correctly
Defective starter winding
Check current in each phase. If
substantial difference between
phases, contact motor
manufacturer
Motor starts, but does not gain
speed
Bearing excessively worn Replace bearings
Cutting chamber full Empty cutting chamber