Kemppi LT 250 - Manual (Page 8)

EN
2.6 Welding cable connections
Connect parent power source
NOTE! LT 250 may be powered from a variety of parent welding power supply sources, providing the
output voltage is 40 – 100 volts DC. Inadequate supply voltage will result in limited performance or
failure to operate. Always connect both plus and minus welding cables from parent power source to
LT 250 to avoid risk of malfunctioning or hazard.
Connect TIG torch
The welding torch is used to supply shielding gas and electrical arc energy to the weld piece. When
you press the welding torch switch, the shielding gas begins to flow and the arc is established. The
TIG torch is connected as shown.
Earth return cable
Connect the earth return cable to the positive pole in TIG welding and to the negative pole in MMA
welding.
Before you start welding, clean the work piece surface and fix the earth return clamp to the work
piece in order to create a closed and interference free welding circuit.
MasterTig LT 250
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