Tweco 300 ACDC Arcmaster User Manual
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SECTION 5. SET-UP FOR SMAW (STICK) AND GTAW (TIG)
Conventional operating procedures apply when using the Welding Power Source, i.e. connect work lead
directly to work piece and electrode lead is used to hold electrode. Wide safety margins provided by the
coil design ensure that the Welding Power Source will withstand short-term overload without adverse
effects. The welding current range values should be used as a guide only. Current delivered to the arc is
dependent on the welding arc voltage, and as welding arc voltage varies between different classes of
electrodes, welding current at any one setting would vary according to the type of electrode in use. The
operator should use the welding current range values as a guide, then finally adjust the current setting to
suit the application.
WARNING
Before connecting the work clamp to the
work and inserting the electrode in the
electrode holder make sure the Primary
power supply is switched OFF.
CAUTION
Remove any packaging material prior to use.
Do not block the air vents at the front or
rear or sides of the Welding Power Source.
CAUTION
DO NOT change the Weld Mode or Weld
Process Mode until after POST-FLOW time
has finished.
.
Figure 5-1. 300 AC/DC Set-up