Lincoln Electric SVM188-A User Manuals

Table of Contents

• Master Table of Contents

  8
• Safety

  2
• Section A - Installation

  9
• Section B - Operation

  19
• Section C - Accessories

  29
• Section D - Maintenance

  33
• Section E - Theory of Operation

  35
• Section F - Troubleshooting and Repair

  41
• Symptoms

  44
  • The Machine is dead - The Input contactor does not operate.

    44
  • Input contactor (CR1) chatters.

    44
  • Input contactor pulls in when ON/OFF Switch is closed but immediately drops out.

    45
  • Machine shuts off (input contactor drops out) when the welder output terminals are made electrically "hot".(Output Terminals Switch ON).

    45
  • Machine input contactor operates but machine has no weld output with the Output terminal Switch ON. Fan runs and pilot light glows.

    46
  • The machine does not have maximum weld output

    46
  • The weld output terminals are always electrically "hot".

    46
  • Machine has maximum weld output and no control.

    47
  • Machine has minimum output and no control.

    47
  • Poor arc starting when the DC600 is in the CV Sub-Arc or CV Innershield Modes.

    48
  • Poor arc characteristics in all processes.

    48
• Section G - Electrical Diagrams

  91