Kemppi RA - Manual (Page 15)

EN
4.6 setting the pressure of the feed rolls
To ensure the filler wire runs smoothly into the welding gun wire liner you should adjust the
pressure of the feed rolls of the wire drive mechanism.
Turn the orange coloured pressure adjustment knob(s) in a clockwise direction to increase the
pressure applied to the welding filler wire, and anticlockwise to decrease it.
NOTE! Periodically remove and clean the short wire spiral located at the back of the wire feed
mechanism. See item D.
There is a graduation scale marked on the pressure arm above or below the orange
adjustment knob, depending on the Kempact RA used. For models fitted with the two roll
GT02 wire drive system, the more pressure applied, the greater the number of graduation
marks visible. For models fitted with the four roll DuraTorque wire drive system, the more
pressure applied, the fewer number of graduation marks visible.
for hard steel and stainless steel filler wires make sure there is sufficient pressure applied,
so avoiding filler wire slippage in the feed rolls.
NOTE! Too much wire feed roll pressure may flatten the filler wire, damage its coating, increase
friction and result in the filler wire sticking in the welding gun liner or contact tip. Also excessive
pressure will result in increased wear to wire drive roll bearings, reducing their life.
13
© Kemppi Oy / 1336