Manual Kemppi A7 TIG Orbital System 300 (page 17 of 61) (English)

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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).

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Kemppi A7 TIG Orbital System 300 Manual

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