Kemppi Master S 400 - Manual (Page 8)

EN
2.4 Welding and earth return cable connections
2.4.1 Choosing welding polarity in MMA welding
You can change the welding polarity by choosing (+) or (–) cable connector. Typically, in MMA
welding, the welding cable is connected to the positive (+) pole connection socket and the
earth return cable to the negative (-) pole connection socket.
2.4.2 Choosing welding polarity in TIG welding
In TIG welding the welding cable must be connected to the negative (-) pole connection
socket and the earth return cable to the positive (+) pole connection socket.
2.4.3 Earthing
If possible, always fasten the clamp of the earth return cable directly onto work piece.
1. Clean contact surface of the clamp from paint and rust.
2. Fasten the clamp properly, so that contact surface is as large as possible.
3. Check that the clamp is fastened firmly.
3. OPERATION
NOTE! Welding in places presenting an immediate fire or explosion hazard is forbidden! Welding fumes
may cause injury, take care of sufficient ventilation during welding!
3.1 Welding processes
3.1.1 MMA welding
MMA welding, as well as carbon arc gouging, is possible with Master S power sources.
Separate models including cellulose welding characteristic are also available. See 'Ordering
codes'.
3.1.2 TIG welding
For TIG welding a separate TIG-torch with gas valve is required. See 'Ordering codes'.
Master S 400, 500
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