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E6010 - Touch, Lift to Start the Arc
E7018, E7024 - Touch, Rock Back and Forth in Joint, Lift .
Once the arc is started, normal welding technique for the application is then used.
b. For Re-Striking Electrodes
Some electrodes form a cone at the end of the elec- trode after the welding arc has been broken, particu- larly iron powder and low hydrogen electrodes. This cone will need to be broken off in order to have the metal core of the electrode make contact.
E6010 - Push, Twist in Joint, Lift
E7018, E7024 - Push, Rock Back and Forth in Joint,
Lift.
Once the arc is started, normal welding technique for the application is then used.
For other electrodes the above techniques should be tried first and varied as needed to suit operator prefer- ence. The goal for successful starting is good metal to metal contact.
For indicator light operation, see table B.1.
DOWNHILL PIPE WELDING
This slope controlled setting is intended for
The OUTPUT CONTROL dial adjusts the full output range for pipe welding.
The ARC CONTROL dial sets the short circuit current
Typically a forceful digging arc is preferred for root and hot passes. A softer arc is preferred for fill and cap pass- es where weld puddle control and deposition (“stacking” of iron) are key to fast travel speeds. This can also increase spatter.
It is recommended that the ARC CONTROL be set to the minimum number without electrode sticking. Start with the dial set at 0.
NOTE: With the VRD switch in the “ON” position there is no output in the DOWNHILL PIPE mode. For indicator light operation, see table B.1.
TIG WELDING
The TOUCH START TIG setting of the MODE switch is for DC TIG (Tungsten Inert Gas) welding. To initiate a weld, the OUTPUT CONTROL dial is first set to the desired current and the tungsten is touched to the work. During the time the tungsten is touching the work there is very little voltage or current and, in general, no tungsten contamination. Then, the tungsten is gently lifted off the work in a rocking motion, which establishes the arc.
When in the TOUCH START TIG mode and when a Amptrol is connected to the
The ARC CONTROL is not active in the TIG mode. To STOP a weld, simply pull the TIG torch away from the work.
When the arc voltage reaches approximately 30 Volts the arc will go out and the machine will reset the cur- rent to the Touch Start level.
To reinitiate the arc, retouch the tungsten to the work and lift. Alternatively, the weld can be stopped by releasing the Amptrol or arc start switch.
The AIR VANTAGE® 500 KUBOTA can be used in a wide variety of DC TIG welding applications. In gener- al the ‘Touch Start’ feature allows contamination free starting without the use of a
AIR VANTAGE® 500 KUBOTA settings when using the
•Set the MODE Switch to the TOUCH START TIG setting.
•Set the "IDLER" Switch to the "AUTO" position.
•Set the "WELDING TERMINALS" switch to the
"REMOTELY CONTROLLED" position.
This will keep the "Solid State" contactor open and provide a "cold" electrode until the Amptrol or Arc Start Switch is pressed.
When using the TIG Module, the OUTPUT CONTROL on the AIR VANTAGE® 500 KUBOTA is used to set the maximum range of the CURRENT CONTROL on the TIG Module or an Amptrol if connected to the TIG Module.
NOTE: The TIG process is to receive a low voltage welding process. There is no difference in operation with the VRD “On” or “Off” for this mode. For indicator light oper- ation, see table B.1.
AIR VANTAGE® 500 KUbOTA
