Operation Manual

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A7 TIG Orbital System 300© Kemppi Oy 2016 1615
OPERATING MANUAL
2.9 Mechanical adjustments
Numerous adjustments are available for the torch and
ller wire positioning according to pipe size, pipe wall
thickness, and electrode extension:
• Torch angle pushing/pulling (± 5°)
• Torch lateral angle (10°)
• Vertical wire aimer (coarse or ne)
• Lateral wire aimer (coarse or ne)
• Wire nozzle angle
• Arc Gap Control (AGC); a setting that
automatically controls the distance of the
electrode from the work piece and maintains
the correct arc length during welding.
2.8 Torch centering
1. Centre torch weaving over the weld joint.
a) Rotate the Cross-Seam Adjustment Encoder to
the centre position.
b) Ensure that the electrode is centered on the
pipe joint. If necessary, loosen the clamp on
the weaving shaft and move the torch and AGC
mechanism to adjust the electrode position.
2. Use Wire inch button to run the wire until its end is
just beyond the electrode.
3. Loosen the wire nozzle clamp and angle the nozzle
to obtain desired entry angle for the ller wire into
the weld pool (60 to 70 degrees).
4. Adjust the wire sideways, so that it’s centred on the
electrode.
5. Adjust the wire vertically to 1.5 mm gap.
6. Adjust the wire stick-out length so that it’s not too
close to electrode at arc start.
7. Press the Home button to rotate weld head to the
next home position.
8. Lower the electrode to position about 1.5 mm
above the work (if not using Touch Start mode).