APR 2018
CMT-330TC Three-Knife Trimmer
5-3
5. Book Quality
5.4 Rectangular Crease Lines
Description
Indentations or crease lines may appear in a
rectangular pattern in the center of the book.
Figure 5-4. Crease Lines on Cover
Possible Causes
The gripper has too much clamp pres-
sure for the stock being cut.
Solutions
Reduce the gripper clamp pressure until
crease lines disappear on test books
(see CMT-330TC Service Manual to ad-
just).
5.5 Linear Crease Lines
Description
Indentations or crease lines may appear in a
rectangular pattern in the near the edges of the
book.
Figure 5-5. Linear Crease Lines
Possible Causes
The clamp has too much clamp pres-
sure for the stock being cut.
Solutions
Reduce the clamp pressure until crease
lines disappear on test books. Use the
clamp pressure adjustment knob located
inside the lower back door (if equipped).
Note: Reducing the clamp pressure too much
will cause other quality problems such as draw.
Only reduce clamp pressure by necessary
amounts. Do not reduce the clamp pressure be-
low 40 PSI.
5.6 Wrinkles in Spine
Description
Wrinkles may appear in the spines of the book
near where the book was clamped.
Figure 5-6. Wrinkles in Spine
Possible Causes
The spine does not line up correctly with
the notch in the side knife clamps.
The clamp has too much clamp pres-
sure for the stock being cut.
Solutions
Adjust the spine offset amount (see
CMT-330TC Service Manual to adjust).
Reduce the clamp pressure until crease
lines disappear on test books. Use the
clamp pressure adjustment knob located
inside the lower back door (if equipped).
Note: Reducing the clamp pressure too much
will cause other quality problems such as draw.
Only reduce clamp pressure by necessary
amounts.
Summary of Contents for CMT-330TC
Page 4: ...APR 2018 CMT 330TC Three Knife Trimmer iv Introduction Notes...
Page 28: ...APR 2018 CMT 330TC Three Knife Trimmer 1 24 1 Introduction NOTES...
Page 60: ...APR 2018 CMT 330TC Three Knife Trimmer 3 12 3 Operator s Guide NOTES...
Page 72: ...APR 2018 CMT 330TC Three Knife Trimmer 4 12 4 Routine Tasks NOTES...