Compressor on SM-74

Discussion in 'Heidelberg Printing Presses' started by alphapressfl, Nov 24, 2021.

  1. alphapressfl

    alphapressfl Member

    Joined:
    Nov 2016
    Messages:
    15
    Location:
    orlando, florida
    the compressor on our sm 74 is not turning on. It is supposed to hit 9 before it can power machine on. It is making a funny noise and stuck at 1. see picture and video i attached.

    Please help.
     

    Attached Files:

  2. Mathew

    Mathew Senior Member

    Joined:
    Apr 2010
    Messages:
    423
    Location:
    Kolding-Denmark
    When you are saying it is noisy, then I will recommend to call a technician. Don't try to run it again. It may damage the scroll.
     
  3. ashok kumar

    ashok kumar Senior Member

    Joined:
    Nov 2017
    Messages:
    101
    Location:
    india
    There is one valve to cut the air supply for machine.
    Open this cover and close the valve.
    Check motor belt is ok or not.
    Check pump is inhaling air from filter side or not.
     
  4. Beguin

    Beguin Senior Member

    Joined:
    Jan 2020
    Messages:
    209
    Location:
    Côté d'ivoire
    it must have the bearing in that part which is spoiled or the engine checked with technician sees thank you and god bless us. see picture
     

    Attached Files:

  5. Waqas_zahid

    Waqas_zahid Senior Member

    Joined:
    May 2011
    Messages:
    207
    Location:
    Pakistan
    Check the direction of rotation
     

  6. Adil

    Adil Member

    Joined:
    Nov 2021
    Messages:
    22
    Location:
    Casablanca
    Check the drive belt also the motor pulley -- is it correctly positioned ??

    Disassemble the two drive belts and then power the motor tt alone; if it does not turn or there is a problem with starting the control contactor, it needs to be replaced (you may find a lack of phase due to damage to the contactor). Disassemble the compressor element and see if there is a blockage at the bearings
     
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