Kemppi mastertig mls 2300 acdc Operation Instruction Manual

Contents

Mastertig MLs™ 300 aDCD / 0743 – 13© keMppi oy1. MMASelect MMA welding by pressing the MMA selection button. The indicator light next to the buttonwill light up when MMA is selected. The current type indicator light indicates which current isselected: AC, DC-, DC+. Change the current type by pressing the MMA button again, and theindicator light will indicate the selected current.Press the QUICK SETUP button if you wish to adjust the dynamics or ignition pulse to MMAwelding. Navigate with the arrow buttons and adjust with the potentiometer. Quit by pressing againQUICK SETUP- or RETURN-button.1. Dynamics (“Arc” –9 … 0 … +9)You will see the numerical value corresponding to the MMA dynamics in the display.Factory setting for all electrode types is zero. You can change the value by turning the pulsepotentiometer. If numerical value is adjusted negative (-1...-9) the arc is softened, and theamount of spatter decreases when welding at the upper end of the recommended currentrange of the electrode. On the positive side (1...9) the arc is rough.2. Ignition pulse (Hot –9 … 0 … +9)You will see on the display the numerical value corresponding to the MMA hot start pulse.You can adjust the value by turning the potentiometer. A positive value corresponds to amore powerful pulse, with zero being the default setting.2. TIG weldingSelect TIG welding by pressing the TIG button. You can change the current type by pressing theselection button again (AC, MIX, DC-, DC+). Selecting DC+ requires holding down the button.According to selected current mode you can adjust parametres by using QUICK SETUP -funktion.Quit from QUICK SETUP -function by pressing QUICK SETUP -button. At the same time youcan see recommended diameter for elektrode.AC TIG (alternating current TIG)Intended for welding aluminium. You can adjust, for example, the balance and frequency ofthe alternating current with the QUICK SETUP and arrow buttons. The following weldingparameters can be adjusted:1. Balance (bAL -50 … 0, factory setting –25%)A positive balance value breaks up aluminium oxide more effectively but heats the electrodemore than the workpiece (the tip blunts).A negative balance value increases heat generation and penetration in the base metal, whiledecreasing oxide break-up.If you wish to increase electrode temperature when welding with a blunt-headed electrode,adjust the balance in the positive direction, and if you wish to decrease electrode temperaturewhen welding with a sharp electrode, adjust the balance correspondingly in the negativedirection.At the factory setting, the electrode tip remains almost sharp.A sharp electrode allows welding with a narrower arc, achieving a narrower weld and deeperpenetration than with a blunted electrode. Narrow welding is especially useful when filletwelding.Welding with a blunted electrode produces a wide arc, which also widens the area of oxidebreak-up. Application areas include repair welding and casting.