Extra Equipment For A6 Gmd - ESAB A6 GMD Service Manual

8. Fit the sensor so that there is the least possible angle between the longitudinal axis of the
sensor and the weld joint, in both the horizontal and vertical planes less then 35_.
(See the drawing on page 13 and 14)
9. When fitting the sensor, ensure that the front part of the sensor finger (secured by a uni-
versal joint) is pointing downwards towards the weld joint or towards the edge to be
sensed/tracked. This applies for all types of joints, including fillet welding when the
welding head is inclined. The sensor must not be radially misaligned by more than +/- -
3_from this position in relation to the axes of the slide cross.
Any large deviation towards one side or the other puts the control performance at risk,
see page 13 and 14.
10. The equipment includes a fixing device for securing the sensor with a type D20 or D35
contact block. This allows course setting of the welding direction, height and angle round
the contact block. Important! The distance B between the steel clamp A and live parts
should be at least 5 mm.
11. Use the mini slide cross- - head for exact adjustment of the position of the tip of the wire in
the welded joint. Adjust, too, the distance between the tip of the wire and tip of the guide
finger if necessary.
The mini- -slide can be adjusted till no play exists by means of the stop screws on the
runner.
12. Check as follows that the sensor is operating correctly:
Turn the selector switch to
S
Using the joystick, run the vertical slide downwards towards a flat base until the tip
S
of the guide finger contacts the base. Continue to lower the slide until the red indi-
cating lamp goes out.
Take hold of the tip of the guide finger and push it to one side or the other. If the
S
equipment is working correctly, the horizontal slide motor should then start and
move in the same direction as the sensor tip is being pushed. If this does not
happen,change over the switch marked
13. As supplied, the tip of the sensor is straight, but can be bent by the user to suit a particu-
lar application or be replaced by some other type or shape of sensor,
see "Extra Equipment for A6 GMD".
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dga9b004
on the apparatus unit backplane.
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