32
Figure 20 - TIG Polarity Connection
1
4
Figure 21- TIG Front Control Panel
Table 4 - TIG PARAMETERS CHART
4.5 TIG WELDING SETUP
WHEN THE PROCESS SWITCH IS PLACED IN THE TIG POSITION,
THE MULTIMASTER 260 TURNS “ON” THE WELD CONTACTOR
SO THAT POWER IS IMMEDIATELY AVAILABLE TO THE OUTPUT
CONNECTION. THE TOUCH TIG STARTING SYSTEM IS THEN
ENABLED.
Step 1. Determine the weld parameters based on the metal
thickness in Table 4 or use the ESAB TIG Welding Hand-
book (optional) for suggested welding parameters.
Step 2. Be sure to set the polarity to DCEN (Electrode Negative)
by placing the Heliarc Torch in the Negative connection
terminal on the front of the power source as shown in
Figure 20.
Step 3. Place the WELD PROCESS 1 switch in the TIG (left)
position.
When the WELD PROCESS switch is moved to the TIG or
STICK position, electrode becomes electrically “HOT”.
Do not allow the electrode to contact ground potential
until you are ready to make a weld.
Step 4. While holding the PRESET 2 button, turn the
VOLTAGE/CURRENT knob to the desired weld
current on the top digital display window.
Step 5. Set the shielding gas ow rate to 20 cfh by open-
ing the manual gas valve on the Heliarc torch and
adjusting the control knob on the R-33-FM-580
owmeter.
Step 6. Touch the tungsten electrode to the workpiece
momentarily to establish the welding arc. Trim
the current as desired by turning the VOLTAGE/
CURRENT 4 knob.
NOTE: The Wirespeed 3 knob has no eect in the TIG mode.
2
SECTION 4 OPERATION
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