Nelson ALPHA 850 - Page 4

Table of Contents
Stud welding unit operating manual Date: July 2021
ALPHA 850 07.2021 / EN Rev.: A
3.6 Location of use ............................................................................ 20
3.7 Device set-up ............................................................................... 20
4 Connection and installation ................................................................ 21
4.1 Power cable connection ............................................................. 22
4.2 Welding cable connection .......................................................... 24
4.3 Control cable connection ........................................................... 25
4.4 Earth cable connection .............................................................. 26
4.5 Workpiece connection ................................................................ 26
5 Control and display elements ............................................................. 28
5.1 Operating elements ..................................................................... 28
5.2 Display elements ......................................................................... 30
6 Equipment fuses ................................................................................... 31
6.1 Fuse elements ............................................................................. 31
7 Start-up and weld quality check ......................................................... 33
7.1 Notes about stud welding .......................................................... 33
7.2 Adjusting the weld parameters ................................................. 34
7.3 Commissioning conditions ........................................................ 38
7.4 Functional test ............................................................................. 39
7.5 Checking weld quality ................................................................ 43
7.5.1 Visual inspection “drawn arc process” ....................................................... 44
7.5.2 Visual inspection “short cycle drawn arc process” ..................................... 45
8 Maintenance .......................................................................................... 46
8.1 Care and cleaning ....................................................................... 46
8.2 Maintenance intervals................................................................. 47
9 Repairs ................................................................................................... 48