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manual abstract
Welding outside in the rain is not permitted. Mains connection x Check to see that mains voltage matches the voltage shown on the machine's rating plate. x Set welding step switch to "0" before plugging in. Shielding gas cylinder connection x Place gas cylinder onto the welding machine's cylinder rack and secure with the chain to the cylinder holder at the rear of the unit. Take off the cylinder cap and open cylinder valve briefly, facing away from your body. x Screw pressure reducer to the gas cylinder valve. Run gas hose from pressure reducer to gas inlet port of the unit. x Recommended gas flow rate in draft-free rooms: 5-10 l/min. MIG/MAG 140/160 x When using adjustable pressure reducers set flow rate according to litre scale in the clock with the T-screw. Turning the T-screw in increases the gas flow rate, turning it out reduces the gas flow rate. x While setting the gas flow rate, the unit must be switched on and the torch's trigger switch held down, so the solenoid gas valve is open. To prevent wasting electrode wire swing the wire feed unit's leaf spring to the side. Modifications and repairs to pressure reducers are strictly prohibited due to the hazards involved. Send faulty pressure reducers to a service centre. Earth lead connection Connect earth clamp of the unit's earth cable as close as possible to the welding point. Ensure good metal to metal contact. Preparation of the welds The joint section of the workpieces to be welded must be free of colour, metall covering, dirt, rust, grease and humidity. The preparation of the welds is to be done under observation of all welding techniques regulations. The right joint The list gives hints for the shaping of the joints. Hints for Setting and Welding Techniques Switching the unit on The unit is switched on with the combination ON/ OFF – welding step switch. With the switch in the "0"- position the unit is electrically separated from the power supply. The unit is fitted with an embedded temperature detector, which shuts the unit down in case of an thermal overload. The tripping of the thermal overload protector is indicated by the front panel control light. Welding power source and wire feed are temporarily disabled. After cooling down the welding power source is automatically activated again, the control light extinguishes. Setting the welding parameters After preparation of the welding machine the welding can begin. To do so, welding voltage and wire feed have to be matched to suit the welding task. If the wire feed speed is increased the welding current increases accordingly. For every electrode wire diameter and every welding task optimal parameters can be found. They are recognisable at the typical humming sound of the arc, amongst other. If there is too much deviation from the optimal parameters, a satisfactory welding is not possible. Form of joint Execution Platethickness s (mm) Gapwidth b (mm) I-joint onesided s < 1,5 0 > 1,5 < 2 I-joint on both sides b 2 – 4 < 2 V-joint b s25 3 – 6 < 1 3 – 6 < 1 MIG/MAG 140/160 Form of joint Execution Platethickness s (mm) Gapwidth b (mm) K-joint s > 0,6 – 0,6 – 1,5 – Double-K-joint > 0,6 – Cornerjoint s > 1 – Care and Maintenance 2. Check of fuse for continuity and contact. The unit is nearly maintenance-free. 3. Visual check for possible shorts or overloads of windings (discoloring). B B Danger – Voltage! Disconnect from power before servicing! x Check feed roller, pressure roller and wire lead- in nozzle at regular intervals for dirt build-up, clean if necessary. x At appropriate intervals the complete torch including torch leads should be cleaned, as rubbed-off parts and dust build-up inside. x The torch's contact tip is a wearing part. If its orifice has enlarged the contact tip must be replaced. x On the inside of the plug-on gas shroud spatters build up. These have to be removed when necessary. An anti-spatter spray eases this job and keeps spatters from sticking to the shroud. x Replace damaged cables without delay. Trouble Shooting Mechanical faults are mostly indicated by an irregular or completely blocked wire feed. Electrical faults cause a malfunction of the unit, in part or complete. Fault, Likely causes Remedy • Noisy or unstable arc? Incorrect welding voltage Correct with welding step switch Too much/too little wire feed Correct with wire feed pot Earth clamp loose or high contact resistance (rust, paint) Ensure good contact between earth clamp and workpiece Contact tip worn or incorrect diameter Replace Incorrect gas flow rate setting Correct Workpiece not clean in seam area Remove paint, rust, grease etc. Power unit faulty Have machine checked by service centre Spiral liner dirty Clean or replace Wire feed faulty See below B B Danger - Voltage! Electrical fault finding must be left to a quali fied electrician. Further fault finding can proceed according to the wiring diagram supplied. Fault find should first start with the unit de-ener • Excessive spattering Wire feed rate too high Correct w...
Other models in this manual:Welding Systems - Welding Machine MIG/MAG 160 (281.1 kb)
Welding Systems - Welding Machine MIG/MAG 140 (281.1 kb)
Welding Systems - Welding Machine MIG/MAG 160 (281.1 kb)