Setting The Spool Brake Force - Kemppi FitWeld 300 Operating Manual

For hard steel and stainless steel filler wires, make sure there is sufficient pressure applied,
so avoiding filler wire slippage in the feed rolls.
Too much pressure may flatten the filler wire, damage its coating, cause friction and
NOTE!
excessive wear to drive roll bearings and therefore reduced life.
For aluminium filler wires select the correct feed roll type from the chart supplied and adjust
for the minimum pressure necessary for reliable filler wire drive.
Slight slippage is recommended in the case of aluminium filler wires. This ensures that the
NOTE!
soft wire is not deformed and flattened and that the feed rolls skid over the soft wire if gets stuck on
the gun contact tip.
For Aluminium and Stainless Steel filler wires, always use Kemppi DL Teflon gun liners. These
liners are especially developed by Kemppi and significantly reduce friction loses, so improving
welding performance.

2.5.4 Setting the spool brake force

To prevent the filler wire from uncoiling on overrun following use at high feed speeds, you can
change the brake force of the welding spool.
Adjust the spool brake force through the hole in the spool locking mechanism with the Allen
key supplied and mounted below the wire drive mechanism.
EN
Increase the force by turning the Allen key clockwise and decrease it by turning it
anticlockwise.
Do not over tighten, and reduce the pressure for light filler wire types.
NOTE!
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FitWeld 300