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B-13

B-13

OPERATION

TABLE B.2

AC TIG WELDING – TIG ELECTRODE/RANGE SETTINGS

Pure (EWP)

“Range”

Appropriate

Tungsten Diameter

Switch Settings

Welding Current

1/8”

75, 100 or 140(1)

100 - 200 amps

3/32”

50, 75 or 100

50 - 100 amps

1/16”

50, 75 or 100

45 - 150 amps

1% Thoriated

“Range”

Appropriate

Tungsten Diameter

Switch Settings

Welding Current

1/8”

100, 140 or 180

160 - 250 amps

3/32”

50, 100 or 140

100 - 180 amps

1/16”

50 or 100

60 - 120 amps

(1)The welding current will be approximately 200 amps with the range switch set at 120 and the OUTPUT CON- TROL set at 10. Do not use a range setting higher than 120 for AC TIG welding.

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DC WIRE FEED WELDING (CV) WITH RANGER 300 DLX

1.Connect one of the following: the LN-25, LN-7 or LN-8 Wire Feeder.

2.Some recommended Innershield electrodes are:

.068 NR-211MP, .068 NR-232, NR-203 series, 5/64 NR-311, and 5/64 NS-3M. Lincore® 33 and 55 hardfacing electrodes can also be used. Cable length and other conditions can affect the ultimate results of this application. Request Lincoln publi- cation N-675 for additional information.

Recommended Outershield electrodes are .045 (1.1 mm), .052 (1.3 mm), and 1/16 (1.6 mm) Outershield 71 and 1/16 (1.6 mm) Outershield 70. Request Lincoln publication GS-200 for additional information.

For MIG welding, the recommended electrodes are

.030 (0.8 mm), .035 (0.9 mm) and .045 (1.1 mm) L- 50 and L-56. You must use a blended shielding gas such as C25 (75% Argon, 25% CO2). Request Lincoln publication GS-100 for additional informa- tion.

3.Set the IDLER CONTROL to “AUTO” for the LN-25 or “HIGH” for the LN-7 or LN-8 and start the diesel engine.

4.Set the RANGE switch to either HIGH, MEDIUM HIGH, MEDIUM LOW, or LOW (CV-red) depending on your wire size and speed.

5.Set the POLARITY SWITCH to either WIRE WELD- ING DC+ or WIRE WELDING DC- depending on the electrode.

6.Set the OUTPUT control to a setting between 1 and 10 that gives the most stable arc for the applica- tion. Try a higher RANGE switch setting if the arc is unstable.

7.Strike an arc and begin welding. The OUTPUT control can be adjusted while welding. DO NOT change the RANGE switch setting while welding. This can result in damage to the switch.

AFTER YOU FINISH WELDING:

1.Stop the engine.

2.Allow the work to cool completely.

3.Remove the work clamp from the work.

RANGER 300 D AND 300 DLX

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Lincoln Electric SVM148-B service manual DC Wire Feed Welding CV with Ranger 300 DLX
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SVM148-B specifications

The Lincoln Electric SVM148-B is a state-of-the-art inverter-based power source designed for both professional welders and hobbyists. As a versatile machine, it excels in a variety of welding applications including MIG, TIG, and stick welding. This machine is particularly notable for its efficiency and portability, making it an ideal choice for on-site projects or workshops where space is limited.

One of the main features of the SVM148-B is its inverter technology. Unlike traditional transformer-based welders, inverter welders are typically lighter and more compact. This means that users can transport the machine more easily without sacrificing power or performance. The SVM148-B is capable of delivering a substantial amperage range, allowing for adjustments that suit various materials and thicknesses, from thin sheet metal to thicker plates.

The machine offers adjustable output levels, providing precise control over the welding process. This level of control is essential for achieving clean, strong welds and is especially useful when working with different materials. The SVM148-B is equipped with digital display features that provide real-time feedback on power settings and welding parameters, allowing welders to make quick adjustments as needed.

Another significant advantage of the SVM148-B is its duty cycle, which is designed to accommodate extended usage without overheating. A robust duty cycle means that professionals can rely on this machine for prolonged periods, making it a dependable choice for heavy-duty tasks.

The SVM148-B also includes advanced safety features such as overload protection, which ensures that the machine will shut down in the event of excessive current draw. This feature not only protects the equipment but also enhances user safety during operation.

Moreover, the machine is compatible with a wide variety of welding wires and electrodes, adding to its versatility. Whether you're working with stainless steel, aluminum, or mild steel, the SVM148-B can adapt seamlessly.

In conclusion, the Lincoln Electric SVM148-B combines advanced inverter technology with user-friendly features, making it an invaluable addition to any welding setup. Its portability, control options, robust duty cycle, and safety measures set it apart as a reliable and efficient welding solution for professionals and hobbyists alike. Whether for a small workshop or large industrial applications, the SVM148-B meets the demands of modern welding with efficiency and ease.
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