Lincoln Electric SVM172-A service manual Gtaw TIG Welding, Gtaw Touch Start TIG Welding, Tig

Models: SVM172-A

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B-24

OPERATION

B-24

 

 

 

MACHINE FUNCTIONALITY BY WELD PROCESS

GTAW (Touch Start TIG) Welding

Use the following tables to review how the machine functions (output controls, arc control, Start options and weld options) for the weld modes listed in the top table.

 

 

TOUCH START TIG

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Material

PROCESS

 

MODE

 

 

 

 

 

 

 

 

 

 

 

 

All Metals

Touch Start TIG

 

3

 

 

 

 

 

 

 

 

 

 

ARC CONTROL

 

OUTPUT CONTROL KNOBS

 

 

 

 

 

 

 

No Arc Controls are active for Touch Start TIG.

 

 

 

 

Maximum

Output

 

 

 

 

 

 

 

Amperage

Control

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START OPTIONS

START PROCEDURE:

The Start Procedure controls the Amperage at a fixed level for the set amount of time.

END OPTIONS

No Arc ending options are active for Touch Start TIG.

120

WFS AMPS

OFF

VOLTS TRIM

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GTAW (TIG) WELDING

The Power Feed / PowerWave system is excellent for Touch Start TIG welding.

The system supports both 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 Power Feed 10M Single Wire Feeder.

Touch Start

TIG

 

Weld Sequence

No Foot/Hand Amptrol

With Foot/Hand Amptrol

 

1. Adjust the arc amperage with the left knob 1. Adjust the maximum arc amperage with

 

on the display panel.

the left knob on the display panel.

2.Turn the right knob on the display panel 2. Touch the tungsten to the work piece.

until the Output Control is ON. Gas will 3. Press the foot pedal or slide the hand amp-

 

 

start to flow.

 

trol a slight amount. Gas will start to flow.

TIG torches without

3. Touch the tungsten to the work piece.

4.

Lift the tungsten to create an arc.

built-in Gas Valves

4. Lift the tungsten to create an arc and weld.

5.

Regulate the arc current with the foot pedal

 

5.

Stop welding by turning the Output Control

 

or hand amptrol.

 

 

to OFF, or by pulling away the tungsten

6.

Stop welding by releasing the foot pedal or

 

 

from the work.

 

hand amptrol, or by pulling the tungsten

 

6.

Gas flow will continue for a short time and

 

away from the work.

 

 

then shut-off.

7.

Gas will continue for a short time and then

 

 

 

 

shut-off.

 

 

 

 

1. Adjust the arc amperage with the left knob

1. Adjust the maximum arc amperage with

 

 

on the display panel.

 

the left knob on the display panel.

 

2. Turn the right knob on the display panel

2. Touch the tungsten to the work piece.

 

 

until the Output Control is ON.

3.

Press the foot pedal or slide the hand amp-

 

3.

Open the gas valve on the TIG torch.

 

trol a slight amount.

TIG torches with

4. Touch the tungsten to the work piece.

4.

Open the gas valve on the TIG torch.

built-in Gas Valves

5. Lift the tungsten to create an arc and weld.

5.

Lift the tungsten to create an arc.

 

6.

Stop welding by turning the Output Control

6.

Regulate the arc current with the foot pedal

 

 

to OFF, or by pulling away the tungsten

 

or hand amptrol.

 

 

from the work.

7.

Stop welding by releasing the foot pedal or

 

7.

Close the gas valve on the TIG torch.

 

hand amptrol, or by pulling the tungsten

 

 

 

 

away from the work.

 

 

 

8.

Close the gas valve on the TIG torch.

POWER FEED 10M SINGLE/DUAL

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Lincoln Electric SVM172-A Gtaw TIG Welding, Gtaw Touch Start TIG Welding, ARC Control Output Control Knobs, Tig