Adj 4.3 Knife Depth Adjustment - Challenge CMT-130TC Service Manual

ADJ 4.3 Knife Depth Adjustment

The knife depth requires adjustment after every
knife change. The knife depth can also be ad-
justed if the knife is not fully cutting through
books.
WARNING
Knife adjustment is a ONE PERSON OPERA-
TION! More than one person adjusting the
knife creates safety hazards.
Initial Actions
Locate a few books approximately ½" (13mm)
thick. No tools are needed.
Procedure
1. Switch the main power ON and main air ON.
2. At the touch screen on the front console,
press the "Setup" button to bring up the
setup options screen. The "Parameters" tab
should be active. Now press the "Enable
Cut Cycle" button near the lower right corner
of the screen.
3. Locate the knife adjustment knob at the left
rear of the machine (Figure 4-10).
4. Was the knife just replaced or installed?
Y N
Raise the knife depth slightly by turning the
knife adjustment knob counterclockwise ap-
proximately three full revolutions. Proceed to
step 5.
5. Make sure the knife adjustment knob is
turned all the way counterclockwise until it
stops. This will set the knife depth to the
highest position.
6. Move the waste bin aside and open the rear
door.
4. Repair/Adjustment Procedures
7. Examine the cut stick and rotate or replace if
necessary (REP 4.1 Cut Stick Replace-
ment).
8. Place the face side (side opposite the spine)
of a scrap book underneath the knife with
the spine facing the inside of the machine.
9. Securely close the rear door and replace
waste bin.
10. Press and hold the remote cut button (Fig-
ure 4-10) for about 1 second. The hydraulic
motor will turn on and the cutting mecha-
nism will perform a cut cycle.
11. Open the rear door and check the book. If
the bottom cover of the book is not fully cut
through, set the knife depth deeper by turn-
ing the knife adjustment knob 1/4 revolution
clockwise.
12. Repeat steps 8 through 11 until the bottom
cover is cut completely without the knife cut-
ting too deep into the cut stick.
Figure 4-10. Knife Adj. Knob & Remote Cut
Button
MAY 2019
4-6 CMT-130TC Book Trimmer