Applies to

• Lotem^® 800
• Lotem Quantum
• Lotem Quantum Spectrum

Priority: Next failure
Release date: 05 Jan 2003

Problem

When a plate is improperly loaded or a plate fly-off occurs, both the drum rollers and the drum roller springs disperse inside of the Lotem.

Solution

Replace the drum load rollers and drum roller springs with the new drum roller spring unit.
The new unit is designed to prevent the rollers and springs from dispersing inside of the Lotem. (Each roller is now permanently attached to its springs.)

Note: If you only need to replace the rollers after implementing the FCO, order part number 290A9C299 - drum roller assembly type II. (The part number refers to one drum roller spring unit only. Order as many of these part numbers as there are missing units.)

Time needed to implement

1 hour

Parts needed

Procedure

1. From Lotem Controller, open the Lotem's doors.
2. Close Lotem Controller, and shut down the Lotem.
3. Disconnect the air pressure supply to the Lotem.
4. Remove the outdated load roller assembly from the Lotem, as described in the Replacing the Lower Roller Assembly procedure.
5. Insert the new load roller assembly into the Lotem.
6. Using the jigs supplied with the kit, adjust the location of the load roller assembly, as follows:

1. Connect the air pressure to the platesetter.
2. Move the tail gripper until it is as close as possible to the head gripper.
3. On both sides of the drum, place a twin jig (P/N 290B7B995) under the tail gripper, as shown in Figure 1:
   
4. Drag the tail grippers until they touch the head gripper, as shown in Figure 2.
   
5. Turn the drum until the V groove in the tail gripper is directly above the load gripper actuator pins, as shown in Figure 3, and push the load gripper bar to lock the drum position.
   
6. Since the air pressure is turned off, use the jig (P/N 290B7B994) as shown in Figure 4, to lock the load roller piston in position so that the rollers are almost touching the drum, as shown in Figure 5.
   

7. Release the three screws that hold the flange of the load roller bracket on the left and right sides, as shown in Figure 6.
   
8. Push the load roller flange toward the tail gripper until the load rollers touches the jigs on both sides. First do one side, tighten the 3 screws that you loosened in step g, and then do the other side.
9. Remove the piston jig.
10. Release the drum by pulling the gripper bar.
11. Turn the drum, then remove the two twin jigs.

7. Power up the Lotem.
8. Start Lotem Controller.
9. With the doors open, load a variety of plates (different sizes and thicknesses).
10. Close the doors.
11. Return the Lotem to working status.

Logistics

Approved quantities:

Schedule supplies for first lots:

Lead Time: 20 days to 1 month

Technical contact

Itai Peperovich

Product Support Manager: Yaron Soffer

Date submitted

719-00106 Rev A