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BURN BACK TIME2.11

FastMig electronics controls the burn back time. When welding stops an automatic sequence

ensures that the ller 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 CABLE2.12

Preferably the earth return cable and clamp should be connected directly to the welding

material.

Always use a good quality, 70mm 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 rmly secured.

SHIELDING GAS2.13

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 dierent 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 eects welding performance and is a fundamental component to overall weld

quality.

MMT 32

l/min

NOTE! Shielding gas ow rate from the welding gun is set according to the application, weld joint,

gas type and gas nozzle shape and size. The ow 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.

Kemppi FastMig MXF65 User Manual

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