Tweco 500P PowerMaster - Manual (Page 30)

POWERMASTER 500, 500P, 350
INSTALLATION 3-6 Manual No. 0-4749
3.07 Configuration Settings
A. Lift-Arc GTAW
The power source is configured from the factory with the Lift-Arc starting circuit active for GTAW. This feature should
be disabled if an external high voltage arc starter is being used to start the arc. To disable the lift arc feature proceed
as follows:
1. Turn off the power to the power source at the main disconnect.
2. Remove the top panel to gain access to the main control board (see Figure 3-7).
3. To disable Lift-Arc place jumper plugs JP1 and JP2 if the OFF position (pins 2 to 3 shorted).
4. To re-enable Lift-Arc place jumper plugs JP1 and JP2 back in the ON position (1 to 2 shorted).
5. Replace the top panel.
Art # A-04090
Figure 3-7 Main Control Board