Tweco VAF4HD Transmig - Manual (Page 57)

TRANSMIG VAF4HD
Manual 0-5269 3-39 INSTALLATION, OPERATION AND SETUP
3.25 Welding- 2T Operation
Position the welding gun above the workpiece and depress the gun switch trigger. Depressing the gun switch
trigger enables the gas valve. When preflow ends, wire feed motor and power source are enabled; the welding
process begins. To end the weld, release the gun switch trigger which disables the gas valve, wire feed motor,
and power source.
Prefl
ow
Run In
%
Ramp
Po
stflo
w
Gun Trigger
Arc Established
Gas
Contactor
Wire feed
Burnback
Art# A-11262
Figure 3-36 Welding- 2T Operation
3.26 Spot Operation
Position the welding gun above the workpiece and depress the gun switch trigger. Depressing the gun switch
trigger enables the gas valve. When preflow ends, wire feed motor and power source are enabled; the welding
process begins. When spot time is over, welding process ends and release the gun switch trigger.
Prefl
ow
Run In
%
Ramp
Po
stflo
w
Spot Time
Gun Trigger
Arc Established
Gas
Contactor
Wire feed
Bu
rnba
ck
Art# A-11258_AB
Figure 3-37 Spot Operation