Tweco 250 Weldskill MIG - Manual (Page 34)

6-4 Manual No 0-5072
weldskill 250, 350 operation
December , 2008
B. SPOT TIMER
Art # 0-08730
When the MODE SELECTOR switch is switched to the SPOT position, the SPOT TIME shaft controls the
duration of a single spot weld.
When the MODE SELECTOR switch is switched to the STITCH position, the SPOT TIME shaft controls the
welding or 'ON' time whilst stitch welding.
C. BURNBACK
Burnback time is the difference between the wirefeed motor stopping and switching off of the welding cur-
rent. The Burnback time allows the electrode wire to burn out of the molten metal weld pool. The Burnback
time is factory set for optimum performance.
Clockwise adjustment increases Burnback time.
D. WIRE INCH SWITCH
Art # 0-08729
When the push button switch is pressed down, the electrode wire is fed through the Wirefeed system & MIG
torch. No gas flows or welding voltage is not present when the Wire Inch Switch is pressed down.
Art # A-08727