problems passing 12pt stock

Discussion in 'DI Presses' started by kristianeyman, Nov 24, 2015.

  1. kristianeyman

    kristianeyman Senior Member

    Joined:
    Jan 2011
    Messages:
    76
    Location:
    mexico
    hello, we have had problems passing 12point stock lately. we have tried adjusting the finger seperators, blast air/sucker combinations, change the angle of the pile board, adjusting the hight of the pile board bar, but nothing seems to work!!? i even switched the stock from my plus but only able to achieve passing 50-90 sheets before it misses....any ideas!?
     
  2. Paul Cavanaugh

    Paul Cavanaugh Senior Member

    Joined:
    Dec 2009
    Messages:
    630
    Location:
    Kennesaw, GA
    Make sure the air compressor is working properly, clean the filters, look for collapsed hoses. Sometimes when the compressor heats up the hoses collapse at the compressor. Also when is the last time the vanes were changed in it? Are there and damaged vanes?

    Lastly check the pile raising mechanism, is there play in the cams or cam followers. There is a nylon piece that works the flag sensor for the pile height, it can become worn and cause the pile to raise erratically.

    Are you getting sheet errors? Long, Short? Or late, early?
     
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