Operation Manual

8
A5 TIG Orbital System 75© Kemppi Oy 2016 1615
OPERATING MANUAL
1.4 Controller unit
A5 TIG Orbital System 75 controller unit is enclosed in a
durable plastic case to operate, store and transport. The unit
includes an intuitive graphical user interface with touch
screen controls. Its software allows auto programming
for automatic calculation of welding parameters. The unit
also includes a USB port for storing downloaded software
updates or standard parameters on a memory stick.
1.5 TIG power source
A5 TIG Orbital System 75 uses an external TIG power
source. This allows using the same power source for tack
welds.
With Kemppi Master MLS 2300 AC/DC power source,
Microtack® function allows easy and fast tacking. This is
usually possible without root-side purging because the tack
weld is so small that there is no oxidation.
The A5 TIG Orbital System 75 controller unit is inherently
compatible with several dierent power source models.
The system is compatible with the following welding
equipment:
Kemppi power sources
• Kemppi MinarcTig Evo 200
• Kemppi MasterTig MLS 2300 ACDC
Other brands
• Lincoln Invertec V160
• Miller Maxstar 150 STH
• Miller Maxstar 200 DX
• Miller Dynasty 200 DX
• Telwin TIG 185
• Telwin TIG 222
• Thermal arc Arcmaster 200 ACDC
The controller unit also includes a general-purpose
power source. You may be able to use other models by
adjusting the remote-signal scale of the controller’s GP
power source settings
1.6 Tube preparation
For successful autogenous welding, ensure that the tube
ends (or ttings) are machined square relative to their
axes. The two ends are butt tightly together.
There should be no gap between the tube ends resulting
from lack of squareness or burrs left from the machining
process. Use appropriate tube-squaring equipment to
machine both tube and tting ends.
Once the tube end is faced o, check for burrs. Any burrs
must be carefully removed with a hand de-burring tool.
Do not chamfer the tube ends.
Cleaning the tube
After machining the tube, clean it properly using the
following procedure:
1. Wipe the tube end with a lint-free towel dipped in
a solvent such as acetone or denatured alcohol.
2. Immediately dry with a second clean cloth before
the solvent has a chance to dry.
3. Use an abrasive cloth to remove any surface
oxides or contaminants.
4. Clean the tube end back to approximately 12 mm
(0.5”).
5. Repeat the solvent cleaning operation.
6. Clean the tube ID in the same way.