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A-4
INSTALLATION
POWER WAVE AC/DC
A-4
WELDING WITH MULTIPLE UNSYN-
CHRONIZED POWER WAVES
Special care must be taken when more than one
Power Wave is welding unsynchronized on a sin-
gle part. Arc blow and arc interference may occur
or be magnified. Each power source requires a
work lead to the work stud to the welding fixture.
Do not combine all of the work leads into one
lead. Performing welding in the direction away
from the work leads. (In a synchronized multi arc
system the weld should go towards the work
leads to minimize arc blow). Connect all of the
work sense leads from each power source to the
work piece at the end of the weld, such that they
are out of the path of the weld current. For addi-
tional information on work voltage sense leads
see sections entitled "Voltage Sensing" and
"Multiple Unsynchronized Arc Sense Lead and
Work Lead Placement Guidelines".
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TWO POWER WAVES
For the best results when pulse welding, set the wire
size and wire feed speed the same for all the Power
Waves. When these parameters are identical, the
pulsing frequency will be the same, helping to stabilize
the arcs.
Every welding gun requires a separate shielding gas
regulator for proper flow rate and shielding gas cover-
age. Do not attempt to supply shielding gas for two or
more guns from only one regulator.
If an anti-spatter system is in use then each gun must
have its own anti-spatter system. (See Figure A.2.)
CAUTION
FIGURE A.2
Travel
Direction
Connect All Work
Sense Leads at the End
of the Joint.
Connect All Welding
Work Leads at the
Beginning of the Joint.