Operation Manual

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A7 TIG Orbital System 300© Kemppi Oy 2016 1615
OPERATING MANUAL
Roller chain and tensioner
Roller chain and tensioner hold the 300-series weld head
on the guide ring. Roller chain changes for each pipe size
and is supplied as part of the guide ring kit with the link
that improves the rigidity of the hinge.
• The roller chain and tensioner assembly circles
the guide ring reaching from the machine
package to the tractor.
• The latch/tensioner mechanism is located at the
tractor end.
• Rollers on the exible chain minimize friction and
facilitate motion around the pipe.
• An integral spring in the tensioner compensates
for expansion of the guide ring caused by
heating.
• Because of the positive drive properties of the
sprocket/chain system, the cylindrical tensioning
collar only requires nger tightening.
2.4 Installing guide ring on tube
1. Manually tack the two pipes together.
2. Install the guide ring with the notched side away
from the weld joint.
3. Locate the guide ring 60 ±1 mm from the centre
of the weld joint.
The guide ring must be parallel to the weld joint
because accurate torch tracking depends on its position.
Mount the guide ring parallel to the weld joint
because accurate torch tracking is dependent upon the
guide ring position. For repetitive welds, do the following:
A. Make an alignment xture to slip over the pipe to
be welded and locate from the pipe bevel.
B. Make the end of the xture square and hold the
guide ring tightly against it.
C. Tighten the guide ring against the pipe.
Drilled holes are provided for removal with a special
pin in special cases; do not use them during normal
installation and removal.