SM 74 4 problem perfecting

Discussion in 'Heidelberg Printing Presses' started by Nicola, Mar 8, 2022.

  1. Nicola

    Nicola Member

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    Good morning, I have SM 74 4 I have printed it in recto e verso without problems, when I put the machine on line (normal) I get this error and the machine doesn't turn anymore. I also checked the phase sensor. Best regards Nicola
     

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  2. MRTYMM

    MRTYMM Senior Member

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    Dear Nicola
    If you have dbout with prefecting you can change to straight and so if the machine work it will be perfecting problem
    If the machine doesn't work then you should send Dyn test pictures and initial test
    Or may problem with paper entering
     
  3. Nicola

    Nicola Member

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    Dear MRTYMM, thanks for the answer,
    The machine doesn't go straight either.
    so it happened:
    1 I have printed it straight and it worked
    2 then I put it in perfecting and it worked for two day
    3 I put it straight and it doesn't work
    4 I put it perfecting and it doesn't work
    5 I checked the phase sensor on the turning drum that worked badly (I think)
    6 I put in perfecting and it doesn't work.
    - I must also find the Zero point by turning the car with the lever and releasing the engine brake.
     

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  4. Nicola

    Nicola Member

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    Where is the Dyn test?
    Dear MRTYMM, thanks for the answer,
    The machine doesn't go straight either.
    so it happened:
    1 I have printed it straight and it worked
    2 then I put it in perfecting and it worked for two day
    3 I put it straight and it doesn't work
    4 I put it perfecting and it doesn't work
    5 I checked the phase sensor on the turning drum that worked badly (I think)
    6 I put in perfecting and it doesn't work.
    - I must also find the Zero point by turning the car with the lever and releasing the engine brake.
     

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  5. Beguin

    Beguin Senior Member

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    hello at Mr. watch. pull the brake and turn the machine with the crank to put it in zero positions then push the crank by pulling on clicked and presses the 90 bar then go online (front). after check if the toothed hoop is at zero and presses 35 bar to set the regrouping cylinder to zero. turn off the machine and turn it on again, I can be sure it will be fine, thank you.
     
  6. Nicola

    Nicola Member

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    Thanks, but sorry, I don't understand 35 bars 90 bars?
     
  7. Beguin

    Beguin Senior Member

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    pressure multiplier
     

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  8. Nicola

    Nicola Member

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    la mia sm74 è più vecchia (1994) e un poco differente.
     

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  9. Nicola

    Nicola Member

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    the test
     

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  10. MRTYMM

    MRTYMM Senior Member

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    Dear Nicola
    SEK page in input output
    To which switch make stop
     
  11. Adil

    Adil Senior Member

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    Good evening .
    According to the photos you sent, your machine is still in front / back mode mechanically
    In this case you must complete the change of the machine manually in online mode and check on the cpc that the machine is really in online mode
    Could be a solenoid valve for the hydraulic control is faulty
     
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  12. Adil

    Adil Senior Member

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    In your case I think that after the reset of the online mode a reset on sak will be necessary.
    Good luck
     
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  13. Nicola

    Nicola Member

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    how do you reset?
     
  14. Nicola

    Nicola Member

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    I'm sorry but I don't understand how to proceed, perhaps the fault of my lack of experience
     
  15. Nicola

    Nicola Member

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    screen shot
     

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  16. Nicola

    Nicola Member

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    other screen
     

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  17. Nicola

    Nicola Member

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    3rd print group
     

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  18. Adil

    Adil Senior Member

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    You have to see on the cptronic the current state -- is it online or recto / verso
     
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  19. Adil

    Adil Senior Member

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    Your machine mechanically and on both sides, it must also be at the pupitre (translation unclear) first
     
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  20. Nicola

    Nicola Member

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    Thank you for your help. Was front and rear; I changed lines, but when I plugged in the crank and spun to change, it didn't sound like normal. I also tried to put it forward and back and back, but nothing changes. What is strange is that when I put the handle now, the motor lock does not open.
     
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