Thermal Arc 251 FABRICATOR, Operating Manual

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FABRICATOR 251
4-8 April 28, 2006
4.03 TWECO Weldskill 300 AMP Weld Gun
The TWECO Weldskill 300 AMP gun fitted to the FABRICATOR 251 offers robust construction, unparalleled reliability
and easy replacement of consumable parts. The TWECO Weldskill gun has an operating capacity in excess of the
capacity of the FABRICATOR and can be expected to give trouble free service.
A r t # A-07344
1
2
3
5
4
6
7
Figure 4-13: TWECO WeldSkill 300 AMP
Item Description Part No. Qty
1 NOZZLE 24A-62 1
2 NOZZLE INSULATOR 34 1
3 CONTACT TIP 14-35 1
4 GAS DIFFUSER 54A 1
5 CONDUCTOR TUBE WM63J-50 1
6 HANDLE ASSY TA1-80 1
7 TRIGGER SWITCH WM91 1
Original Parts Installed
Table 4-2 MIG Gun Original Parts Consumables
TWECO Weldskill MIG guns may be fitted to many different types of MIG welding Power Supplies so that your whole
shop can be converted to TWECO Weldskill. Not only will this give greater reliability (and hence greater productivity)
but it will reduce stockholding of consumable parts. See your Thermal Arc distributor for details.
Gun Consumable Parts
See Appendix at the back of this manual.
4.04 Installing A New Wire Conduit
1. Be sure the MIG gun cable is arranged in a straight line, free from twists, when installing or removing a wire
conduit. Remove the old conduit by first removing the MIG gun nozzle, contact tip, insulator and gas diffuser.
Then loosen Allen screws in the conductor tube and connector plug and pull the old wire conduit out of the
cable assembly from the connector plug end.
2. To install a new conduit, first inspect the o-ring gas seal on the conduit for cuts or damage. Start from the
connector plug end of the assembly and begin pushing the conduit through the connector plug, cable assem-
bly and into the gun. If the conduit should lodge along the way, gently whip or work the cable assembly to aid
forward movement.