1988 Gto 52 4 color registration prob

Discussion in '4-Color Offset Presses +' started by V2creative, Feb 27, 2020.

  1. V2creative

    V2creative Member

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    Hi

    can any one help about my machine registration problem

    Unit number 1 and unit number 3 has problem

    from top right and bottom right

    pls advise
     
  2. junker1984

    junker1984 Senior Member

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    US, Midwest
    Hi V2, You'll have to try to be more specific regarding your issue. Photo would help. Double imaging? Is there a perfector between 2 and 3?
     
  3. V2creative

    V2creative Member

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    Yes perfector now I checked

    Double image in only first unit

    Between plate and blanket cylinder no space while without impassion

    right side okay but on left side blanket and plate touch

    I change packing now better but still touching but less

    use 125 packing
     
  4. mantman

    mantman Senior Member

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    I suppose you mean 1.25 mm packing under blanket right? If that is the case then you are really OVER over packing blanket.
    By the book you should go as low as 0.95 max 1.15. Your plate is without packing i presume -hope-.
    Sooo formula is:
    plate thickness 0,15mm - plate undercut 0.03mm=plate over bearer ring +0.12mm
    blanket 1,95mm + packing say 1mm - blanket undercut 3mm=blanket under bearer ring-0,05mm
    ergo your squeeze of plate/blanket is 0,12-0,05=0,07mm
    Also check your plates are firmly tight over plate cylinders.
    Hope that helps
     
  5. V2creative

    V2creative Member

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    Thank you so much dear
    Problem has been resolved

    I have one more problem now B064AD38-54BD-4DA0-97A3-C5FFA6730F59.jpeg
     
  6. mantman

    mantman Senior Member

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    Open up electrical panel and search for 4 sets of green and red buttons see if green is sticking out and push it. That problem occured to me when machine could not speed up/slow down really slow, so electrician told me to open a small box at motor under feeder and put some grease over a radial spindle that controls the speed of machine
     

  7. V2creative

    V2creative Member

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    No there are no buttons; it’s GTO52 zp 1988 model

    so red light is on and inching is only half round no running machine
     
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