Heidelberg SM74

Discussion in 'Heidelberg Printing Presses' started by benjo, Jan 11, 2021 at 6:56 AM.

  1. benjo

    benjo Member

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    Oct 2020
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    Location:
    Herefordshire
    Hi I have a problem with the techno trans on the SM74 5 colour. Basically after the fount system has warmed up an error comes up saying d-circuit flow controller error and cuts out the system. I’ve just cleaned the system out and as soon as I’ve put fresh fount in it does it again. Can anyone help?
    Many thanks
     
  2. CHOCK

    CHOCK Senior Member

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    Dec 2016
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    Location:
    Managua,Nicaragua
    Hi sir
    Can you give the model of technotran with some PIC IC of the model , in order to help you??

    Blessing
     
  3. benjo

    benjo Member

    Joined:
    Oct 2020
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    Location:
    Herefordshire
    It’s a techno trans beta d. And these are the messages that keeps coming up and I keep flushing the system out and put fresh fluid in there and it’s still coming up with that error even that I’ve only just flushed it out and put fresh filters and fluid in.
    Hope this makes sense
    Thanks
     

    Attached Files:

  4. CHOCK

    CHOCK Senior Member

    Joined:
    Dec 2016
    Messages:
    1,736
    Location:
    Managua,Nicaragua
    Hi sir:

    Check this:

    1) Dampening solution supply interrupted.

    2) Dampening solution connector not
    properly connected.

    3) Supply pressure too low.

    4) Level sensor dirty.

    5) Level sensor defective

    6)Solenoid valve blocked by alcosmart.

    7)
    Dampening solution tank:

    a)Drain dampening solution, clean
    the tank.

    b)Check and / or replace the filter

    c)Check the float switch for soiling
    and clean it

    Dampening solution feed
    pump:

    e)Check / clean foot filter

    Dampening solution
    circulating pump:

    Check / clean foot filter/and filter in pump outlet

    Blessing
     
  5. benjo

    benjo Member

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    Oct 2020
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    Location:
    Herefordshire
    Hi can you send pictures or explain how to clean the foot filter in the pump outlet??

    or how do I check the dirt filter??
    Also how do I check the flow controller??

    Is there any pictures you can send explaining how to do them please?

    many thanks
     

  6. benjo

    benjo Member

    Joined:
    Oct 2020
    Messages:
    5
    Location:
    Herefordshire
    Also where’s the dirt filter preceding the heat exchanger??
     
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