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SCRATCH ARC DC TIG OPERATION FOR VIPER 140/160
Scratch Arc ignition allows the arc to be started in DC TIG by lightly scratching the tungsten in a backward
motion against the work piece, (similar to striking a match) lift the tungsten slightly from the work piece to
establish and hold an arc.
(5) Make sure the front end parts of the tig torch are correctly assembled, use the correct size and type of
tungsten electrode for the job, the tungsten electrode requires a sharpened point for DC welding.
(6) Set the welding current using the amperage dial.
(7) Turn on the Gas Valve located on the tig torch handle.
(8) Lay the outside edge of the Gas Cup on the work piece with the Tungsten Electrode 1- 2mm from the
work piece.
(9) Now drag the torch backwards lightly touch the tungsten to the work piece as you drag the torch.
(10) The arc will strike, as it does lift the tungsten slightly from the work piece to maintain the arc.
(7) Turn on the Gas Valve
(8) Lay the outside edge of the Gas Cup on the
work piece with the Tungsten Electrode 1- 2mm
from the work piece.
(9) Now drag the torch backwards lightly touch
the tungsten to the work piece at the same time
(10) The arc will strike and lift the tungsten
slightly from the work piece to maintain the arc.
IMPORTANT! - We strongly recommend that you check for gas leakage prior to
operation of your machine. We recommend that you close the cylinder valve
when the machine is not in use.
Welding Guns Of Australia PTY LTD, authorised representatives or agents
of Welding Guns Of Australia PTY LTD will not be liable or responsible for
the loss of any gas.
