4-20. TIG Lift-Arc Welding

1 2

1 − 2

“Touch” Seconds

Do NOT Strike Like A Match!

Lift-Arc Start

When Lift-Arctbutton light is On, start arc as follows:

1TIG Electrode

2Workpiece

Touch tungsten electrode to work- piece at weld start point, enable out- put and shielding gas with torch trig- ger, foot control, or hand control.

Hold electrode to workpiece for 1-2 seconds, and slowly lift elec- trode. Arc is formed when electrode is lifted.

Normal open-circuit voltage is not present before tungsten electrode touches workpiece; only a low sensing voltage is present between electrode and workpiece. The solid-state output contactor does not energize until after electrode is touching workpiece. This allows electrode to touch workpiece with- out overheating, sticking, or getting contaminated.

Application:

Lift-Arc is used for the DCEN or AC GTAW process when HF Start method is not permitted, or to re- place the scratch method.

Ref. S-156 279

4-21. Preparing Unit For Stick Welding

To select STICK welding process, proceed

Connect work clamp cable to the WORK

Set STICK welding process using P3 push

as follows:

connector.

button.

Follow safety precautions according to

If a remote control is desired, connect it to

 

Section 1.

 

the Remote Control receptacle.

. Be aware that STICK welding can be

Prepare unit according Section 3.

Turn unit On.

enabled (L16 On) or disabled (L16 Off)

Using a cable with a proper adapter, con-

using P6 push button, and this status

 

nect electrode holder to the MIG gun con-

Allow time for unit to complete its start up

is retained in the STICK welding pro-

nector.

cycle.

cess memory.

 

 

4-22. Stick Welding Advanced Settings

 

 

 

 

HOT START

is 0% to 100%).

Select MENU FULL on D1 and D2 (see

To change HOT START setting, proceed

Use E2 to change D2 value.

Section 4-10).

 

as follows:

This parameter increases output amper-

Use E1 to change D1 to ARC.

Press P2 to enter SET UP menu.

age at the start of a weld to eliminate elec-

D2 value is default setting of 80% (range is

trode sticking.

 

Select MENU FULL on D1 and D2 (see

ARC FORCE

0% to 100%).

 

Section 4-10).

 

To change ARC FORCE setting, proceed

Use E2 to change D2 value.

 

Use E1 to change D1 to HOT.

 

as follows:

When setting is increased, short-circuit

 

 

D2 value is default setting of 100% (range

Press P2 to enter SET UP menu.

amperage at low arc voltage increases.

 

 

 

OM-221 694 Page 27

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Miller Electric XMC 4000 manual TIG Lift-Arc Welding, Preparing Unit For Stick Welding, Stick Welding Advanced Settings
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XMC 4000 specifications

The Miller Electric XMC 4000 is a versatile and robust portable welding machine designed to meet the needs of skilled welders across various industries. With a focus on innovation and performance, the XMC 4000 combines advanced technologies with user-friendly features, making it an ideal choice for both experienced professionals and newcomers to the welding field.

One of the standout features of the XMC 4000 is its exceptional welding output. The machine is capable of delivering a maximum output of 400 amps, allowing it to handle a wide range of applications, from light fabrication to heavy-duty industrial tasks. Its multi-process capabilities enable users to perform MIG, TIG, Stick, and Flux-Cored welding, providing versatility and flexibility for different welding requirements.

The XMC 4000 is equipped with Miller's Auto-Set feature, which simplifies the welding process. This technology automatically adjusts the settings based on the user's selected material thickness and wire diameter, ensuring optimal arcs and reducing the likelihood of operator error. Additionally, the machine includes a built-in dynamic arc control that improves arc stability and provides a consistent weld quality, even in challenging conditions.

Another key characteristic of the XMC 4000 is its user-friendly interface, featuring a large LCD display that provides real-time data on welding parameters. This allows operators to make quick adjustments as needed, enhancing productivity and efficiency on the job site. The intuitive design also makes it easy for users to navigate through various settings without extensive training.

Durability is a priority with the XMC 4000. The unit is built with high-quality materials and designed to withstand harsh working environments. Its rugged construction, combined with a compact and lightweight design, makes it easy to transport, whether to the job site or between service locations.

In terms of power options, the XMC 4000 is adaptable to various input voltages, allowing it to operate seamlessly in both industrial and field-based applications. This level of flexibility means that welders can use it in diverse locations, making it a reliable companion for on-the-go projects.

Overall, the Miller Electric XMC 4000 stands out as a powerful, versatile, and user-friendly welding machine that meets the demands of today’s welding professionals. Its advanced features, durable design, and multiple process capabilities make it an excellent investment for anyone looking to enhance their welding capabilities.
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