Product

Lotem^® 800 family platesetters with Omron^® interlocks

Background

This procedure describes how to check and adjust the side door on the Lotem 800 family platesetter.

Requirements

• Side door jig (part number 690-00724A)
• Digital voltmeter (part number xxx)
• Interlock jig cable (part number 220-01407A)
• Masking tape
• Hex keys

Procedure

Checking and adjusting the side door

1. Remove the top rear panel of the platesetter.
2. Remove the side door jig (part number 690-00724A) from the Lotem 800 doors and interlocks adjustment jigs kit (part number 518-01578A). The jig comprises of three steps and an adjusting knob.
   • The adjusting knob is for determining the width of the gap between the left side door and the chassis.
   • The first (lowest) step of the jig is used for determining the width of the groove formed between the side door and the chassis.
   • The second (middle) step and third (highest) step of the jig are used for determining the correct position of the Omron interlocks:
     
     
     Click image for detailed view
     
     
3. Rotate the jig’s adjusting knob in a counterclockwise direction, until the jig is closed.
4. Insert the first (lowest) step of the jig into the groove formed between the side door and the chassis:
   
   
   
   
5. Rotate the jig’s adjusting knob in a clockwise direction, until the first step of the jig touches the side door and the jig’s base is flush against the chassis. This determines the space formed between the left side door and the chassis.
6. Remove the jig.
7. Manually open the left side door.
8. Disconnect the Molex^® connector belonging to the left side door’s Omron interlock:
   
   
   
   
9. Plug the probes (part number xxx) into the appropriate jacks on the digital voltmeter (part number xxx):
   
   
   Important: Plug the black probe into the digital voltmeter’s negative (common) jack, and plug the red probe into the digital voltmeter’s Volt/ohm/temp jack (not the A or mA jack).
10. Remove the interlock jig cable (part number 220-01407A) from the kit. At one end of the wiring jig are two crocodile clips, on the other end there is a Molex connector.
11. Connect one crocodile clip to each probe:
    
    
    
    
12. Connect the Molex connector to the interlock’s connector.
13. Set the dial on the digital voltmeter to the diode indicator:
    
    
    
    
14. Place the base of the jig flush against the chassis and then close the left side door onto the jig’s second step:
    
    
    
    
15. The digital voltmeter should make a beeping sound.
    If the digital voltmeter fails to beep, adjust the left side door interlock operation key.
16. Fully open the left side door and remove the jig.
17. Place the base of the jig flush against the chassis and then close the left side door onto the jig’s third step:
    
    
    
    
18. The digital voltmeter should beeps.
    If the digital voltmeter does beep, adjust the Omron interlock.
19. Remove the jig.
20. Reinstall the top rear cover and close the left side door.
21. Check, and if required, adjust the platesetter’s top front cover, top rear cover, and unload panel.

Adjusting the Omron interlock operation key

1. Manually open the left side door.
2. Use a pencil to mark the outline of the interlock operation key:
   
   
   
   
3. Use a hex key to remove the two screws securing the interlock operation key.
4. Add the required number of spacers (part number 252-10209A) to the interlock operation key assembly:
   
   
   
   
5. Reinstall the interlock operation key, by using the marked outline as a guide.
6. Place two strips of masking tape over each end of the interlock’s entry point:
   
   
   
   
7. Close the left door just enough for the interlock operation key to punch holes in the masking tape.
8. Manually open the left side door:
   • If no punched holes appear on the masking tape, then the interlock operation key is correctly positioned.
   • If punched holes appear on the masking tape, then reposition the interlock operation key and repeat steps 6-8.

Adjusting the Omron interlock

1. Manually open the left side door.
   Important: It is less time-consuming to remove spacers from the interlock operation key as opposed to the interlock. Therefore, if possible, try to remove spacers from the interlock operation key (as described in the section Adjusting the Omron interlock operation key), before attempting to remove the spacers from behind the interlock.
   
2. Before dismantling the interlock, outline its shape with a pencil:
   
   
   
   
3. Use a hex key to remove the two screws securing the interlock.
4. Remove the required number of spacers from the interlock assembly.
5. Reinstall the interlock, by using the marked outline as a guide.
6. Place a strip of masking tape over the interlock’s entry point:
   
   
   
   
7. Close the left side door just enough for the interlock operation key to punch holes in the masking tape.
8. Manually open the left side door:
   • If the punched holes appear exactly in the middle of the masking tape, then the interlock is correctly positioned:
     
     
     
     
   • If the punched holes do not appear exactly in the middle of the masking tape, reposition the interlock and repeat steps 6-7.

See also

Technical contact(s)

Content owner: Nir Peleg
See the Escalation page for escalation contacts.

Date submitted

16 Jan 2006