Solter SOLMIG 160 Manual Del Usuario página 12

WELDING PRINCIPLES
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Mig/Mag welding
Welding wire is automatically fed through an insulated liner to the tip of the torch. The torch consists of a
switch, liner, gas hose, and control cable. The switch activates the wire feed roller and the gas flow.
Releasing the switch stops wire feed and gas flow. The weld current is transferred to the electrode (the
wire) from the contact tip at the torch end. The current to the electrode is set using the two switches on the
front of the control panel. Wire speed must be adjusted according to current output using the rotary control
below the power switches. The higher the current the faster the wire speed. A gas cup fits over the contact
tip to direct gas flow towards the weld, (See fig.9) ensuring that the arc welding process is shielded from
oxidisation. The shielding gas also assists heating of the weld. The torch is connected to the positive side
of a DC rectifier, and the negative clamp is attached to the work piece.
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Preparation for welding: IMPORTANT! BEFORE YOU COMMENCE, MAKE SURE THE MACHINE IS
SWITCHED OFF AT THE MAINS. IF WELDING A VEHICLE, DISCONNECT THE BATTERY OR FIT AN
ELECTRONIC CIRCUIT PROTECTOR. ENSURE THAT YOU READ, UNDERSTand AND APPLY THE
SAFETY INSTRUCTIONS IN SECTION 1.
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To ensure a complete circuit, the negative lead must be securely attached to the workpiece close to the
weld area. Best connection is obtained by grinding the point of contact on the workpiece before connecting
the clamp.
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The weld area must be free of paint, rust, grease, etc.
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Gas types and their useWelding mild steel with CO² gas is appropriate for most welding tasks where
spatter and high build-up of weld do not pose a problem. Toachieve a spatter free and flat weld however,
requires an Argon/CO² mixture.
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To weld aluminium use: Argon Gas, 0.8mm, Contact Tip 0.8mm and Aluminium Wire (MIG/2/KAL08).
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Thermal Protection
Should the welder become overheated due to prolonged use beyond the stated duty cycle the thermal
protection will cause the welder to cut out and the amber light on the front panel will illuminate. Wait for
fifteen minutes for the welder to cool down at which time it will econnect automatically.
MAINTENANCE
¡DA NGER! Unplug the welder from the mains power supply before performing maintenance or service.
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Wire feed unit:
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Check the wire feed unit at regular intervals. The feed roller wire guide plays an important part in
obtaining consistent results. Poor wire feed affects the weld. Clean the rollers weekly, especially the
feed roller groove, removing all dust deposits.
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Torch:
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Protect the torch cable assembly from mechanical wear. Clean the liner from the machine forwards by
using compressed air. If the liner is blocked it must be replaced.
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Contact tip
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The contact tip is a consumable item and must be replaced when the bore becomes enlarged or oval.
The contact tip MUST be kept free from spatter to ensure an unimpeded flow of gas.
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Gas cup
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The gas cup must also be kept clean and free from spatter. Build-up of spatter inside the gas cup can
cause a short circuit at the contact tip which will result in either the fuse blowing on the printed circuit
card, or expensive machine repairs. To keep the contact tip free from spatter, we recommend the use
of anti-spatter spray available from your Solter dealer.
MI03054-04