Instruction Manual

REVISION 9/04 BJF
71
TROUBLESHOOTING
SECTION 7-2
PROBLEM
-Processing Faults-
PROBABLE CAUSE REMEDY
A.) Material building up below
screen.
1.) Pneumatic discharge blower is
not running.
1.) Start the blower.
2.) Damper on discharge blower
not open enough.
2.) Adjust the damper on opposite
side of the machine from blower.
3.) Discharge line is blocked. 3.) Open line and remove
blockage.
B.) Stalling 1.) Overfeeding. 1.) Reduce feed rate.
2.) Partial or complete screen
blockage.
2.) Remove screen, clear and
inspect for any damage.
3.) Insufficient tension on V-Belt
drive, slipping and burning.
3.) Check belt tension and adjust
as necessary.
4.) Badly blunted or damaged
knives.
4.) Install re-sharpened or new
blades as required.
5.) Knife gap setting is too wide. 5.) Check the knife gap
clearances and adjust as required.
6.) Installation fault, motor is
running in reverse direction.
6.) Check the directional arrow
and reset electrical connections to
give correct rotational direction.
7.) Safety interlock is inoperative. 7.) Tighten safety interlock
actuator screw.
C.) Material overheating 1.) Check items 1,2,4,5 & 6 under
“Stalling.”
1.) Follow remedies listed for
each item.
2.) Screen size is too small. Increase the screen size.
3.) When feeding sheet material,
the bed knife shield on rotor
down strike is incorrectly set.
3.) Check the bed knife projection
beyond the shield. Set it to 1/32”
(0.80mm) for film and 1/16”
(1.6mm) for thicker materials.
When granulating rubber,
insufficient talc causing freshly
cut surfaces to re-adhere.
4.) Increase talc percentage rate
of feed.
5.) Blockage in pneumatic
discharge line.
5.) Check the direction of blower
rotation. Check venturi and
line/or transition piece for
blockage.