B-9

B. INSTALL SHIELDING GAS

OPERATION

FIGURE B.13

B-9

 

MIG welding requires an appropriate bottle of shielding gas. For mild steel either a cylinder bottle of Ar/CO2 or 100% CO2 can be used refer to the following instruc- tions to properly connect shielding gas to the machine.

WARNING

CYLINDER may explode if dam- aged. Keep cylinder upright and

chained to support

• Keep cylinder away from areas where it may be damaged.

• Never lift welder with cylinder attached.

• Never allow welding electrode to touch cylinder.

• Keep cylinder away from welding or other live electrical circuits.

-----------------------------------------------------------------------

WARNING

BUILDUP OF SHIELDING GAS may harm health or kill.

• Shut off shielding gas supply when not in use.

1. Secure the cylinder to a wall or other stationary support to prevent the cylinder from falling over. Insulate the cylinder from the work circuit and earth ground. Refer to Figure B.13.

2. With the cylinder securely installed, remove the cylinder cap. Stand to one side away from the out- let and open the cylinder valve very slightly for an instant. This blows away any dust or dirt which may have accumulated in the valve outlet.

WARNING

BE SURE TO KEEP YOUR FACE AWAY FROM THE VALVE OUTLET WHEN “CRACKING” THE VALVE. Never stand directly in front of or behind the flow regulator when opening the cylinder valve. Always stand to one side.

------------------------------------------------------------------------

MALE END

REGULATOR

ADAPTER

S19298

PLASTIC

CO2

WASHER

100%

 

FEMALE END

 

75/25

 

MIXES

 

3. Attach the flow regulator to the cylinder valve and tighten the union nut securely with a wrench.

NOTE: If connecting to 100% CO2 cylinder, a CO2 regulator adapter is required. Purchase separately S19298 CO2 adapter be sure to install plastic washer included in the fitting on the bottle side.(See Figure B.13 )

4. Refer to Figure B.13. Attach one end of inlet gas hose to the outlet fitting of the flow regulator and tighten the union nut securely with a wrench. Connect the other end to the machine Solenoid Inlet Fitting (5/8-18 female threads — for CGA — 032 fitting). Make cer- tain the gas hose is not kinked or twisted.

SHIELDING GAS

1. For CO2, open the cylinder very slowly. For argon- mixed gas, open cylinder valve slowly a fraction of a turn. When the cylinder pressure gauge pointer stops moving, open the valve fully.

2. Set gas flow rate for 30 to 40 cubic feet per hour (14 to 18 I/min.) under normal conditions, increase to as high as 40 to 50 CFH (18 to 23.5 I/min.) under drafty (slightly windy) conditions.

3. Keep the cylinder valve closed, except when using the machine.

POWER MIG (140, 180 MODELS)

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Lincoln Electric 180, 140 manual Install Shielding GAS
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180, 140 specifications

Lincoln Electric is a well-known name in the welding industry, and the Lincoln Electric 140 and 180 models continue to set the standard for reliable, user-friendly welding equipment. These machines are popular among hobbyists, DIY enthusiasts, and professionals alike due to their performance, portability, and innovative features.

The Lincoln Electric 140 offers a compact design tailored for both novice and experienced welders. With a maximum output of 140 amps, this versatile MIG welder can handle a range of projects, including welding mild steel, stainless steel, and aluminum. It operates on 120V standard household current, making it accessible for home use. One of its standout features is its variable voltage control, which allows the user to adjust the output for optimal welding based on the material thickness. Additionally, the machine features a quick-change drive roll system that simplifies the process of switching wire types, ensuring that you can adapt to different materials effortlessly.

Meanwhile, the Lincoln Electric 180 takes things a step further, providing a robust 180-amp output that allows for welding thicker materials. This model operates on 230V, which makes it suitable for heavier-duty applications. The 180 model is equipped with an advanced digital display that provides real-time feedback on voltage and wire speed, aiding welders in achieving precision in their work. Its durable construction ensures reliability, and the built-in thermal overload protection serves as a safeguard against overheating, prolonging the machine's lifespan.

Both models incorporate Lincoln Electric's patented Infinite Voltage and Wire Speed Control, allowing for fine-tuning of settings for a wide variety of welding tasks. They come with a spool gun compatibility feature, expanding their usability for aluminum welding with ease. The ergonomic design and lightweight construction facilitate mobility, making them ideal for both shop and field work.

In summary, the Lincoln Electric 140 and 180 welders offer users the perfect blend of performance and convenience. Their innovative technologies, user-friendly interfaces, and versatile features make them excellent additions to any welding toolkit, catering to various skill levels and project requirements. Whether for occasional home projects or more demanding professional tasks, these welders deliver exceptional quality, efficiency, and reliability that Lincoln Electric is renowned for.
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