Miller XMT 350, Руководство пользователя

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OM-278618 Page 30
7-3. Lift-Arc TIG Welding Mode - GTAW Lift-Arc - Output On
!
Weld terminals are energized at all
times in Lift Arc TIG welding mode.
An ArcReach Smart Feeder will not
power up in normal Lift-Arc mode (See
Section 6-4).
1 Mode Switch
2 Volts Indicator
3 Left Display
4 Right Display
5 Amps Indicator
6 Adjust Control
7 Workpiece
8 Tungsten Electrode
9 Remote 14 Receptacle
10 Remote In Use Indicator
Setup
For typical system connections refer to
Section 7-1.
Set Mode Switch to GTAW LIFT-ARC posi-
tion.
ON is shown in the Left Display. Preset am-
perage is shown in the Right Display with
the Amps Indicator lit.
Normal open-circuit voltage is not present
before the electrode touches the work-
piece, instead a low sensing voltage is
present. The sensing voltage allows the
electrode to touch the workpiece without
overheating, sticking, or getting contami-
nated.
Operation
The Adjust Control is used to set desired
preset amperage.
If a remote control is connected to the
Remote14 Receptacle and used for
amperage adjustment, the adjustment
will function as a percentage of the pre-
set amperage. The Remote In Use indi-
cator will be lit.
If an ArcReach device is used for am-
perage adjustment, it will have full
range of the preset amperage. If the Ar-
cReach device is capable of communi-
cation while welding, the amperage
can be adjusted while welding. Depen-
dent on the capabilities of the device, it
may have the ability to override param-
eter adjustments and mode switch set-
ting. The Remote In Use indicator will
be lit. An ArcReach device will override
a remote control connected to the Re-
mote 14 Receptacle.
For best results, firmly touch the tung-
sten electrode to the workpiece at the
weld start point. Hold electrode to
workpiece for 1-2 seconds, and lift
electrode. An arc will form when the
electrode is lifted. To minimize arc flare
at the end of the weld, pull back the
electrode quickly to extinguish the arc.
278547-A
1 − 2
Seconds
“Touch”
Do NOT Strike Like A Match!
8
7
3 4
1
5 2
10
9
6
85 ON