FitWeld Evo 300 [10/20] Setting the pressure of the feed rolls

FitWeld Evo 300

2.5.3 Setting the pressure of the feed rolls

To make ller wire run smoothly into the wire liner and to the welding gun you can adjust the

pressure of the feed rolls of the GT02 WireDrive mechanism.

Turn the orange coloured pressure adjustment knob in a clockwise direction to increase the

pressure applied to the welding ller wire, and anti-clockwise to decrease it.

There is a graduation scale marked on the aluminium arm above the orange adjustment knob.

The more pressure applied, the greater the number of graduation marks visible.

For hard steel and stainless steel ller wires, make sure there is sucient pressure applied,

so avoiding ller wire slippage in the feed rolls.

NOTE! Too much pressure may atten the ller wire, damage its coating, cause friction and

excessive wear to drive roll bearings and therefore reduced life.

For aluminium ller wires select the correct feed roll type from the chart supplied and adjust

for the minimum pressure necessary for reliable ller wire drive.

NOTE! Slight slippage is recommended in the case of aluminium ller wires. This ensures that the

soft wire is not deformed and attened and that the feed rolls skid over the soft wire if gets stuck on

the gun contact tip.

For Aluminium and Stainless Steel ller wires, always use Kemppi DL Chili gun liners. These

liners are especially developed by Kemppi and signicantly reduce friction loses, so improving

welding performance.

2.5.4 Setting the spool brake force

To prevent the ller 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.

Increase the force by turning the Allen key clockwise and decrease it by turning it

anticlockwise.

NOTE! Do not over tighten, and reduce the pressure for light ller wire types.