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38
Touchdown
ignition
For details of how to adjust the set-up parameter “HFt”, please refer to the section
headed “The set-up menu: Level 2” - sub-section “TIG set-up parameters”.
Set the HFt parameter (HF ignition) to OFF. The factory setting (i.e. in which the power
source is delivered) is: Parameter HFt = “0.01s”.
To ignite the arc, proceed as follows:
Fig.20a Place the gas nozzle down
Fig.20b Arc ignites when electrode is touched down
on workpiece
Fig.20c Welding
-
Place the gas nozzle down on the
ignition location in such a way that
there is a gap of approx. 2 to 3 mm
(0.08 to 0.12’’) between the tungsten
electrode and the workpiece .
-
Actuate the torch trigger - the
shielding gas starts to flow
-
Gradually tilt up the torch until the
tungsten electrode touches the
workpiece
-
Raise the torch and tilt it into the
normal position; the arc now ignites
Содержание MagicWave 1700
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