Polar 66 Irregular Knife movement

Discussion in 'Cutters and Trimmers' started by Colin McLellan, Oct 1, 2018.

  1. Colin McLellan

    Colin McLellan New Member

    Joined:
    Sep 2018
    Messages:
    2
    Location:
    Surrey United Kingdom
    Morning all,
    Our polar 66 has developed a fault over past couple of days. On first using or returning after short break the knife seems reluctanct to travel on pressing cut buttons. It cuts but seems laboured. Once a couple of cuts are done it seems to be more direct in the movement, anyone throw some light on this?
    ta
    colin
     
  2. CHOCK

    CHOCK Senior Member

    Joined:
    Dec 2016
    Messages:
    1,176
    Location:
    Managua,Nicaragua
    Hi sir:
    Please review this 3 steps:
    1) in the board Cutting circuit SK 95 see it:
    Yellow Led: Cut Buttons : B28A N.C V73 -ON + B28B N.C v74-ON
    Red Led ; " " N.O V75-OFF + " N.O V76-OFF
    RED LED ; V86 Normally -OFF . When cut buttons actuated correctly(o.5seg) will be ON !!

    2)Yellow Ved v71 SB- Simulator (k1M) See his schematic in resting position = ON
    " ' v72 SB " (wsk) Polling =OFF
    " " V77 kNIFE Upstroke(BDC Upstroke) from SAP 66 =OFF
    " " V78 kNIFE Descending(BDCU neg.) from SAP 66 =ON

    3) Finally the knife movement is transferred to the MHS95/66 Unit by a cable pulley againt a flat spiral spring prestress.
    The correct mechanical adjusting for knife control Upstroke is performed by vertically shifting the complete unit.
    Let me know
    Blessing
    superchock@yandex.com
    Mobile+WhatsApp:+505 8861 1441
     
  3. Colin McLellan

    Colin McLellan New Member

    Joined:
    Sep 2018
    Messages:
    2
    Location:
    Surrey United Kingdom
    will check, thanks for response
    Colin
     
  4. CHOCK

    CHOCK Senior Member

    Joined:
    Dec 2016
    Messages:
    1,176
    Location:
    Managua,Nicaragua

  5. CHOCK

    CHOCK Senior Member

    Joined:
    Dec 2016
    Messages:
    1,176
    Location:
    Managua,Nicaragua
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