Tweco 500P PowerMaster User Manual
Page 31
POWERMASTER 500, 500P, 350
Manual No. 0-4749
3-7
INSTALLATION
B. Wire-Sharpening for GMAW (Power-Master 500P)
The power source is configured from the factory with the Wire-Sharpening circuit active for GMAW. This feature
improves arc starting by reducing the size of the ball on the wire at the end of the weld. To disable this feature proceed
as follows:
1. Turn off the power to the power source at the main disconnect.
2. Remove the top and side panels to gain access to the display board. (see Figure 3-8).
3. Remove the knobs and hardware from the front panel to allow removal of the display board.
4. To disable Wire-Sharpening place jumper plug JP1 in the OFF position (pins 3 to 4 shorted).
5. To re-enable Wire-Sharpening place jumper plug JP1 back in the ON position (pins 1 to 2 shorted).
6. Replace board and panels.
JP1
Art # A-04105
Figure 3-8 Wire-Sharpening jumper plug