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Contents

1 Overview ....................................................................................................................... 7

1.1.1 Contact Mode Capacitor Discharge Welding ........................................................... 8

1.2 NCD+ Contact Guns ................................................................................................. 8

1.2.1 Operation of the Contact Gun .............................................................................. 8

1.2.2 Operation of Contact Gun with LED Option ............................................................ 8

2 LED Option .................................................................................................................... 9

3 Features ...................................................................................................................... 10

4 Gun Set-Up .................................................................................................................. 11

4.1 Setting Up Chuck Assembly ..................................................................................... 11

4.1.1 Setting Up Chuck ............................................................................................. 11

4.1.2 Adjusting Chuck and Stop Assembly ................................................................... 11

4.1.3 Adjusting Stud Stop Assembly ........................................................................... 12

4.2 Setting Up Foot and Leg Assembly ........................................................................... 12

4.3 Setting Spring Pressure .......................................................................................... 13

5 Weld Setup .................................................................................................................. 14

6 Maintenance of Stud Welding System .............................................................................. 15

6.1 Stud Welding Gun .................................................................................................. 15

6.2 Welding Cable / Control Cable ................................................................................. 15

6.3 Power Control Unit ................................................................................................. 15

7 Troubleshooting ............................................................................................................ 16

7.1 Visual Weld Inspection and Weld Parameter Adjustments ............................................ 16

7.2 Weld Quality Physical Inspection and Weld Parameter Adjustments .............................. 16

7.2.1 Recommendations ........................................................................................... 16

8 Exploded Drawings & Parts List ...................................................................................... 19

8.1 Contact Gun (751-650-600) .................................................................................... 19

8.1.1 Parts List ........................................................................................................ 19

8.1.2 Exploded Drawing ............................................................................................ 21

8.2 Contact Gun with LED Option (751-650-610) ............................................................. 22

8.2.1 Parts List ........................................................................................................ 22

8.2.2 Exploded Drawing ............................................................................................ 24

8.3 Electrical Functions of Guns ..................................................................................... 25

8.3.1 Triggering Contact ........................................................................................... 25

Nelson NCD+ User Manual

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