Lincoln Electric POWER FEED 25M Service Manual page 41

B-23
Touch Start TIG
Weld Sequence
1. Adjust the arc amperage with the left knob
on the display panel.
2. Turn the right knob on the display panel
until the Output Control is ON. Gas will
start to flow.
TIG torches without 3. Touch the tungsten to the work piece.
built-in Gas Valves. 4. Lift the tungsten to create an arc and weld.
5. Stop welding by turning the Output Control
to OFF, or by pulling away the tungsten
from the work.
6. Gas flow will continue for a short time and
then shut-off.
1. Adjust the arc amperage with the left knob
on the display panel.
2. Turn the right knob on the display panel
until the Output Control is ON.
3. Open the gas valve on the TIG torch.
TIG torches with
4. Touch the tungsten to the work piece.
built-in Gas Valves.
5. Lift the tungsten to create an arc and weld.
6. Stop welding by turning the Output Control
to OFF, or by pulling away the tungsten
from the work.
7. Close the gas valve on the TIG torch.
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OPERATION
GTAW (TIG) WELDING
The POWER FEED® / Power Wave system is excellent
for Touch Start TIG welding.
The system supports TIG torches with or without gas
control valves. TIG torches with gas control valves con-
nect directly to the gas flow regulator. For TIG torches
without gas control valves, connect the output gas
hose on the wire feeder to the TIG torch gas hose.
The wire feeder gas solenoid may be enabled or dis-
abled by parameter P.8 in the set-up menu found in this
operations section.
No Foot / Hand Amptrol
POWER FEED® 25M
With Foot / Hand Amptrol
1. Adjust the maximum arc amperage with
the left knob on the display panel.
2. Touch the tungsten to the work piece.
3. Press the foot pedal or slide the hand
amptrol a slight amount. Gas will start to
flow.
4. Lift the tungsten to create an arc.
5. Regulate the arc current with the foot
pedal or hand amptrol.
6. Stop welding by releasing the foot pedal or
hand amptrol, or by pulling the tungsten
away from the work.
7. Gas will continue for a short time and then
shut-off.
1. Adjust the maximum arc amperage with
the left knob on the display panel.
2. Touch the tungsten to the work piece.
3. Press the foot pedal or slide the hand
amptrol a slight amount.
4. Open the gas valve on the TIG torch.
5. Lift the tungsten to create an arc.
6. Regulate the arc current with the foot
pedal or hand amptrol.
7. Stop welding by releasing the foot pedal or
hand amptrol, or by pulling the tungsten
away from the work.
8. Close the gas valve on the TIG torch.
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