Ink Supply Valve - Riso ComColor X1 series Technical Manual

Ink Flow Section

2-12. Ink Supply Valve

< Refer to the "Cutting the Ink Tubes" section in this Chapter for the cutting instruction of the Ink tubes.>
1. Turn OFF the machine power and disconnect the power cable from the power source.
2. Remove the left and right top covers, rear cover, and right side cover. (Refer to the section on covers in Chapter 2.)
3. Remove the scissor clamps from machine. (Follow the instructions in "Removing the Scissor Clamps.")
4. Open the power supply unit, engine control PCB, and ink supply unit. (Refer to the section on covers in Chapter 2.)
5. Follow the procedure in "Draining Ink into the Waste Ink Tank."
6. Remove the ink cartridges from the machine. (Disconnect its joint from the machine.)
Note:Be careful at this step. If you disconnect ink tubes from the Ink supply valves while the ink cartridges are
still not removed, the ink in the ink cartridges will flow and drain out from the ends of the tubes onto the
floor.
7. Unplug the wire connector attached to the ink supply valve to replace, as well as the mounting screw to the
machine frame. (Round tip IT3C screw 4x8 (1 pc))
8. Use nippers to cut the ink supply tube at the downstream port of the the ink supply valve for replacement.
<Do only for that of the color to replace.>
Note:Hold the tube end with a clean lint-free cloth or paper while cutting it. Continue holding it until the ink in the
tube drains into the negative pressure ink tank.
9. Cap the cut ends of the ink tube with rubber caps, which are supplied in the replacement Ink supply valve kit.
<Do only for that of the color to replace.>
Ink supply valve downstream port areas
[ 11A-40 ]
Removed in above step 7)
ComColor Series (Revision 2.4)