SM74-2

Discussion in 'Heidelberg Printing Presses' started by Beguin, Jul 22, 2020.

  1. Beguin

    Beguin Member

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    hi everyone and thank you for everything.
    just a problem with the suction compressor of the reception retarder which does not turn but the small fan turns.
    the continuity in the cable leaving the compressor to the electrical cabinet is good. we even changed the KLM card but still the same problem.
    we tried the compressor on another machine and it works.
    But when we return it to the original machine it does not work.
    we see the compressor activated in the machine menu but it does not run.
    thank you.
     

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  2. Maher Sayed

    Maher Sayed Member

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    Hello,
    Did you check the KLM4 in another machine, may the board you tested is also faulty.
     
  3. Beguin

    Beguin Member

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    we had bought a new KLM4 card but it's still the same problem.
    we believed that the new card is not good but after testing the new card on another machine, we saw that the new card is good. the continuity in the cable is good.
     
  4. Maher Sayed

    Maher Sayed Member

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    There is a red LED on the KLM board, it should be ON after machen power ON, then it should go OFF when you make paper ON,
    Please test the blower with paper running
     
  5. Beguin

    Beguin Member

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    la LED sur la carte s'allume lorsque la machine s'allume et le ventilateur tourne également mais c'est le moteur de l'aspiration et la soufflerie qui ne tourne pas mais sur une autre machine cela fonctionne bien.Merci
     
  6. Maher Sayed

    Maher Sayed Member

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    Hello,
    Watch the LED once you pressed Compressor ON, it should goes OFF
     
  7. CHOCK

    CHOCK Senior Member

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    Hi sir:
    please test the following:

    1) in connector X1 , please test the 3 fuses for to protect the 3 phases Lines: l1+l2+l3 some of them can be open , and see if the connector is NOT loose, or corroded, or some wires Broken!!!!! CLEAN VERY WELL.

    2) after the fuses are 3 15Z1 interference filter, some of them can be open too.

    3) Is not bad idea, test the power supply in the board Klm :+15Vdc +12Vdc in tolerance with 0.7% up or down

    4) by that reason if some of the 3 steps mentioned before is missing your board will NOT work in your machine, but you indicate in the other machine work, well is that the reason.!!!

    Please use the: "Common sense" is the best invaluable Tools for the troubleshooting.

    Blessing
     
  8. Beguin

    Beguin Member

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    Hi to you, I want to thank you. I was able to find a solution to my problem. It is thread that was disconnected. Thank you for your contribution
     
  9. Maher Sayed

    Maher Sayed Member

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    So good to hear that your problem been solved, congratulations
     

  10. CHOCK

    CHOCK Senior Member

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    Great Sir! good job

    Blessing
     
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