SM 74 no air

Discussion in 'Heidelberg Printing Presses' started by mark vanes, Jun 15, 2015.

  1. mark vanes

    mark vanes Member

    Joined:
    Jan 2014
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    red light showing & error symbol for insufficient pressure.
    Compressor is ok for some reason sensor not allowing valve to open.
    Any ideas ?

    mark
     
  2. Waqas_zahid

    Waqas_zahid Senior Member

    Joined:
    May 2011
    Messages:
    234
    Location:
    Pakistan
    Hello Mark,

    Can you look at the current output of the pressure transducer on the display screen? If the pressure is ok the current output should be around 18mA, in order to remove the error and confirm the sensor is faulty you can install a potentiometer in place of the sensor and adjust it to point where the error is removed.
     
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