Operation - ESAB A6 GMD Service Manual

OPERATION

The joint tracking equipment is adjustable for different kinds of joint tracking, such as
tracking by sensing the edge and tracking by sensing the groove. The adjustment is made both
on the control box and on the sensor.
Joint tracking by sensing the edge:
S
Set the selector switch on the control box to
sired sensing direction is left or right. The two stop screws shall be screwed home, see
figure on page 7. This means that the sensor fingers are laterally spring- - loaded and thus
permit edge sensing. Joint tracking by sensing the edge is used for fillet joints and similar
joints, see also table below.
Joint tracking by sensing the groove:
S
Set the selector switch on the control box to
and horizontal sensing is desired or vertical sensing only. The two stop screws shall be
screwed out at least two turns or to stop, see figure on page 7. This will disengage the
spring- -load of the sensor fingers and permit groove sensing. If the stop screws are not
screwed out there is a risk that the sensor fingers start "climbing" the joint walls of shal-
low V and U joints. See also joint table below for correct settings.
Examples of some different types of joints and of the guide finger angle against the
guiding edges.
Double- -flanged butt joint
I- -weld
V- -weld
1/2 V- -weld
1/2 V- -weld
U- -weld
cga9d1ea
Joint type
- - 10 - -
or depending on whether the de-
or depending on whether vertical
Settings, control box
A=Guide bar