Huayuan Electric NB-500HK, Instruction Manual, Page: 5 / 29

CONTENT
1, Summary
........................................................................................................................................................ 1
1.1 Model instruction
.................................................................................................................................1
1.2 Main features ....................................................................................................................................... 1
1.3 Usage ....................................................................................................................................................1
1.4 Working condition and environment ...................................................................................................1
1.5 Symbol instruction ............................................................................................................................... 2
2, Technical Specifications ..................................................................................................................................2
2.1 Main technical parameters .................................................................................................................. 2
3, Panel and function
......................................................................................................................................... 3
3.1 Front panel function ............................................................................................................................ 3
3.2 Down front panel ................................................................................................................................. 4
3.3 Rear panel instruction ..........................................................................................................................5
4, Installation ......................................................................................................................................................7
4.1 Power supply requirement .................................................................................................................. 7
4.2 Power cable connection .......................................................................................................................7
4.3 Welder and wire feeder connection
....................................................................................................9
4.4 Gas cylinder and gas regulator connection
......................................................................................... 9
5. Operation ....................................................................................................................................................... 9
5.1 Pr-operation and inspection confirmed items and methods and requirements ................................9
（
1
）
Preparation of safety equipment ...................................................................................................9
（
2
）
Checking after connection
...........................................................................................................10
（
3
）
Switch operation and gas flow adjustment ................................................................................. 11
（
4
）
Wire installation
...........................................................................................................................11
5.2 Welding operation ............................................................................................................................. 13
（
1
）
4-Step weld operation(Non initial) ..............................................................................................13
（
2
）
2-Step weld operation (Non initial and crater)
........................................................................... 14
..................................................................................................................................................................14
6, Weld condition example .............................................................................................................................. 14
7, Working principle .........................................................................................................................................18
7.1 Working principle ...............................................................................................................................18
7.2 Drawing
.............................................................................................................................................. 18
7.3 Component list ...................................................................................................................................19
8, Maintenance and repairing
..........................................................................................................................19