Sharp SW-120NC, Instruction Manual

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9-11
#16. Body Breakage Or Cracks From Gullets
Probable Cause :
A. Excessive back-up guide "preload".
B. Improper band tension.
C. Guide arms spread to maximum capacity.
D. Improper beam bar alignment.
E. Side guide adjustment is too tight.
F. Excessively worn teeth.
#17. Band is Twisted Into A Figure "8" Configuration
Probable Cause :
A.
Excessive band tension.
B. Any of the band conditions which cause the band
to be long (#18) or short (#19) on tooth edge.
C. Cutting a tight radius.
#18. Used Band Is "Long" On The Tooth Edge
Probable Cause :
A. Side guides are too tight – rubbing near gullets.
B. Excessive "preload" – band riding heavily against
back-up guides.
C. Worn band wheels causing uneven tension.
D. Excessive feeding rate.
E. Guide arms are spread to maximum capacity.
F. Improper band tracking – back edge rubbing heavy
on wheel flange.
#19. Used Band Is "Short" On The Tooth Edge
Probable Cause :
A. Side guides are too tight – rubbing near back edge.
B. Worn band wheels causing uneven tension.
C. Guide arms are spread too far apart.
D. Excessive feeding rate.