Kemppi Kempact 251R Operating Manual

Also see for KEMPACT 181A: Quick guide Service manual

EN4.6 Setting the pressure of the feed rollsTo ensure the filler wire runs smoothly into the welding gun wire liner you should adjust thepressure of the feed rolls of the wire drive mechanism.Turn the orange coloured pressure adjustment knob(s) in a clockwise direction to increase thepressure 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 feedmechanism. See item D.There is a graduation scale marked on the pressure arm above or below the orangeadjustment knob, depending on the Kempact RA used. For models fitted with the two rollGT02 wire drive system, the more pressure applied, the greater the number of graduationmarks visible. For models fitted with the four roll DuraTorque wire drive system, the morepressure 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, increasefriction and result in the filler wire sticking in the welding gun liner or contact tip. Also excessivepressure will result in increased wear to wire drive roll bearings, reducing their life.13© Kemppi Oy / 1135