ESAB Heliarc 281iAC/DC, Руководство по эксплуатации

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section 5 operation
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SECTION 5 OPERATION
CONTROLS & OPERATION (con't.)
10. GTAW ( TIG ) Welding with Manually Sequenced Pulsing - See Figure 11
Figure 11 - TIG Lift Arc Mode
10.1 Set the process to TIG mode using the mode selector key.
10.2 Set the desired "peak" welding current using the main setting control.
10.3 Set the slope-down time, final/background current and post-purge gas time using the SL, FC and then PG
time keys respectively together with the main setting control as necessary. See above.
10.4 Position the electrode 1/8" (3 mm ) from the work. Press the torch switch to initiate the gas flow.
10.5 On releasing the torch switch the arc will strikes (assuming HF mode selected) and the current will up-slope
to its peak/main value. Momentary operation (press & release) of the torch switch will now step the current
back to its base level. Repeated momentary operations will alternately step the current from base to peak
levels and back as required for the application.
10.6 To stop welding press and hold the torch switch when the current is at its peak level. The current will now
slope down to its base or final current level (per the slope-down time as set above) and then remain at this
level until the torch switch is released when the post gas purge will run.