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3.3 WELDING SELECTIONS

3.3.1 Manual Metal Arc welding (MMA)

Select welding parameters according to ller manufacturer’s

recommendations.

1. Selectpolarity(+or-)ofweldingcurrentcableandreturncurrentcable

according to ller.

2. Select MMA welding with the switch

3. Select suitable welding current by adjusting potentiometer.

3.3.2 DC TIG welding

Select welding parameters according to ller manufacturer’s

recommendations.

1. ConnectTIGtorchto-poleandearthcableto+pole

2. Select TIG welding with the switch

3. Select suitable welding current by adjusting potentiometer.

3.4 WELDING SELECTIONS

NOTE! Welding fumes may be dangerous to your health, see that there is ample

ventilation during welding! Never look at the arc without face shield made for arc

welding! Protect yourself and your surroundings from the arc and hot spatter!

3.4.1 Earthing

Ifpossible,alwaysxearthcableclampdirectlyontheweldingpiece.

1. Clean connection surface of earth clamp from paint and rust.

2. Connect the clamp carefully so that contact surface is as large as

possible.

3. Finally check that the clamp sits tight.

3.4.2 Welding

See also 3.1. Welding processes and 3.4. Welding selections.

NOTE! It is recommended that you try welding and rate of welding current rst

on something else than the actual work piece.

Youcanstartweldingafterhavingmadethenecessaryselections.Arcislit

by scratching the welding piece with electrode. Length of arc is regulated by

holding electrode tip at a suitable distance from welding piece. Suitable arc

length is usually about half the diameter of the electrode core wire. When

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