Rap 2.22 Gripper Clamp Cylinder - Challenge CMT-130TC Service Manual

RAP 2.22 Gripper Clamp Cylinder

Output 27
The gripper clamps the book through the ma-
chine cycle and transports it from station to sta-
tion within the machine. The gripper's home lo-
cation is at the end of the table slot, near the
front of the machine.
Possible Fault Indicators

Gripper clamp will not clamp or un-
clamp.
Initial Actions
Perform RAP 2.20 Pneumatic Pressure.
Perform GP 6.14 Speed-Control Air Valves.
Check that the pressure gauge on valve #2
reads 0.3 MPa. If it does not, readjust pressure
by turning the pressure adjustment screw (Fig-
ure 2-29).
Check for air leaks and disconnected or pinched
hoses.
Check for loose or damaged wire 68 at the elec-
trical panel.
Check that the cable connector on valve #2 is
connected properly.
Procedure
1. Switch the main power OFF.
2. Switch the main air OFF.
3. Attempt to actuate the gripper by hand.
Does the gripper travel freely?
Y N
Adjust gripper clamp guide screws until grip-
per clamp travels up and down freely, but is
not allowed to twist.
4. Switch the main air ON.
2. Status Indicator RAPs
5. Switch the main power ON.
6. Manually activate valve #2 by pressing the
button on top of the valve. Does the valve
activate?
Y N
Disconnect power and air, then replace
valve #2 (PL 5.22 Pneu. Manifold Asm.
59012-1).
7. Electrically activate valve #2 by shorting wire
68 to 74. Does the valve activate?
Y N
Disconnect power and air, then replace
valve #2 (PL 5.22 Pneu. Manifold Asm.
59012-1).
8. Disconnect power and replace the main
PWB (REP 4.23 Main PWB Replacement).
Figure 2-28. Gripper Clamp
MAY 2019
2-30
Figure 2-29. Pneumatic Valve #2
CMT-130TC Book Trimmer