LORCH M 2020 Operation Manual

not included at delivery. ...

machines can be dangerous. Please draw user´s attention to follow the safety precau- tions to avoid injuries. Welding and cutting machines must be used appropriate and only by specialist staff. Please inform yours- elf constantly about the valid safety precau- tions and regulations of accident prevention by working with this machine*. Remove all flammable material from the wel- ding area for fire prevention before welding. Do not weld at containers which were filled up before with flammable materials (fuel). All inflammable material in the welding area which could be inflamed by sparks must be re- moved. Ch ...

standard. Please notice following items:  The unit is for welding under commercial or industrial con- ditions (CISPR 11 class A). The use in other surroundings (for example in residential areas) may disturb other electric devices.  During welding electromagnetic problems can be caused at: – Mainscables, controlcables, connections for telecom- munication – TV/Radio – Computer and other similar devices – Protection devises as for example alarm systems – Pacemakers and hearing aids – Devices for measure and calibrate – Devices with less protection against disturbances If other dev ...

10. How to connect the ground cable Connect the ground cable 13 at the groundconnection 12 and fasten it turning to right and connect the ground clamp 9 to the workpiece or at the welding table. How to connect the ground clamp Fasten the ground clamp 9 near the welding location, this avoids that the current will flow trough machineparts or con- trols. Please keep attention that the connections between ground clamp and workpiece is constant. Do not place the ground clamp on the welding machine or gas cylinder, otherwise welding current is conducted via the protective co ...

press buttons 22 on operating panel. Adjust the pressure at the modulation screws 20 that the wire-feed rolls 19 even still are turning by holding the wire coil. The wire should not be clamped or deformed. Hold down button 22 until wire projects about 20 mm from torch neck. Screw in the contact tip corresponding to the wirediameter into the torch 3 and cut off the sticked out wire end. How to connect the gas cylinder Before opening the bottle the adjustment screw 28 at the housing must be relieved, it means, turned to the left, otherwise the pressure-reducing vale could be damaged. Put the ...

– The wire feed automatically adjusts to the set welding voltage. – The wire feed can be corrected manually. Operating panel Main switch/M 2095: coarse Voltage-range switch Switch on the unit with the main switch/coarse voltage-range switch 34 and select the required mains voltage/coarse volt- age range: 400 V (only with the M 2040, M 2060, M 2070, M 2080) Operation via 400 V three-phase system. 230 V (only with the M 2020, M 2040, M 2060) Operation via 230 V alternating current system. Use the adapter cable included in the delivery (only with M 2040, M 2060) for connection to the alte ...

The welding wire is fed from the wire coil to the contact tip due to the wire-feeding rolls. The arc burns between the melting wire electrode and the workpiece. The welding wire acts as arc carrier and filler material. Shielding gas flows through the gas nozzle and protects the arc against the atmospheregas. At metal shielded gas welding both, inert and active gases are used. The distinction is made between Metal Inert Gas (MIG) and Metal Active Gas (MAG) welding. Further possible classification is by the type of arc. This means the external form of the arc, is proneness to short- circuiting, and the way of transfer t ...

) Metal shielded gas welding can be welded in all posi- tions: horizontal, vertical-down, vertical-up, overhead and in horizontal-vertical position. At horizontal welding hold the torch vertical to the workpiece (neutral torch position) or up to 30° “pushing” the torch. At thicker welds, a slight dragging motion is sometimes used. For best depth of penetration and covering of shielded gas is the neutral position of the torch the most suitable one. Please notice if the torch is tilted to far, it could be that possible that air will be sucked into the shielded gas atmosphere (injection effect). At vertical and ov ...

contact tip is not tight check it No function when torch button is pressed nut of the torch hose is not tight tighten it no connection of the control cable in the torch hose. check and change if necessary overload of the machine and thermal protection is in function (control lamp 39 indicates overload) allow machine to cool down at no load Irregular wire feeding or wire welds to the con- tact tip wire electrode is tight at the spool check and change if necessary burr at the wire beginning cut the wire beginning again Irregular wire feeding or no wire feeding wrong contact pressure at the wire-fee ...

Only for EU countries. Do not dispose of electric tools together with household waste material! In observance of European Directive 2002/96/EC on waste, electrical and electronic equipment and its implementation in accordance with national law, electric tools that have reached the end of their service life must be collected separately and returned to an environmentally compatible recycling facility. Lorch Schweißtechnik GmbH Postfach 1160 D-71547 Auenwald Germany Telephone: +49(0)7191/503-0 Fax: +49(0)7191/503-199 We herewith declare that this product was manufactured con- form to following standards: EN 60 974-1/-10, ...

Tel. +49 (0)7191 503-0 Fax +49 (0)7191 503-199 [email protected] www.lorch.biz ...