Instruction Manual

REVISION 9/04 BJF
72
TROUBLESHOOTING
SECTION 7-3
PROBLEM
-Mechanical Faults-
PROBABLE CAUSE REMEDY
A.) Bearing overheating. 1.) Excessive tension on the V-
Belt drive.
1.) Check belt tension and adjust
as necessary.
2.) Inadequate lubrication. 2.) Check lubrication frequency
and the recommended lubricants
in motor and rotor bearings.
3.) Dirt/Contamination in
bearing.
3.) Eliminate source of
contamination.
B.) Visible cracks in knives. 1.) Incorrect grinding procedure
or incorrect grinding wheels in
use.
Check grinding procedures and
contact a STERLING Service
Engineer.
C.) Knives moving on seats. 1.) Uneven knife seat surface. 1.) Clean knife seats to provide
maximum bearing surface.
2.) Loose knife screws. 2.) Tighten to correct torque per
section 4.
3.) Stretched knife screws. 3.) Knife screw should not be
used more than six times. Renew
them if there is evidence of
stretching.
D.) Knives breaking. 1.) Possibly due to cracks caused
by incorrect grinding.
1.) Refer to problem B, “Visible
cracks in knives”. (Above)
2.) Abnormally heavy materials. 2.) Contact a STERLING Service
Engineer.
3.) Contaminated input material. 3.) Inspect material from
contaminates/foreign matter.
E.) Excessive knife wear. 1.) Open knife setting. 1.) Reset as detailed in section 4.
2.) Abrasive materials. 2.) Contact a STERLING Service
Engineer for alternate material.
F.) See Copy.