Thermal Arc ARCMASTER 300 AC/DC, Service Manual

Page: 30 / 116

5
SET-UP FOR SMAW (STICK) AND GTAW (TIG)
5 – 1
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 pro-
vided 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: 300ACDC Set-up