Kemppi MXF 65, Operating Manual, Page: 14 / 32

EN
Burn BaCk tiMe 2.11
FastMig electronics controls the burn back time. When welding stops an automatic sequence
ensures that the filler wire does not stick to the work piece and that no ball is formed at the
wire tip, ensuring reliable re-ignition. This system works regardless of the wire feed speed set.
earth return CaBle 2.12
Preferably the earth return cable and clamp should be connected directly to the welding
material.
Always use a good quality, 70mm2 heavy copper cable, and if possible a screw type 600A
clamp. Ensure that the surface contact to the work piece is clean of metal oxide and or paint.
Make sure the clamp is firmly secured.
shielding gas 2.13
NOTE!
Handle shielding gas bottle with care. Assess the risks associated with handling and using
compressed gas. Always use a cylinder transport carriage and secure the cylinder safely.
There are many different suppliers of quality shielding gases for welding. Please ensure that
you are selecting the correct gas for your application. FastMig Pulse uses welding curves
for Synergic and Pulsed welding. These curves are created and recommend a particular gas
mixture to be used. This information can be found in the basic curve information P65 panel.
Shielding gas effects welding performance and is a fundamental component to overall weld
quality.
MM
T 32
l/min
5
10
15
20
NOTE!
Shielding gas flow rate from the welding gun is set according to the application, weld joint,
gas type and gas nozzle shape and size. The flow rate should be measured at the welding gun
nozzle before welding via a Rotameter, and normally measure's between 10 – 20 litres per minute
for many welding applications.
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FastM
ig MXF65, 67 / © Kemppi O
y / 0920
I