Control Board Removal and Replacement | Lincoln Electric SVM148-B

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F-57

TROUBLESHOOTING & REPAIR

CONTROL BOARD REMOVAL AND REPLACEMENT (continued)

FIGURE F.16 – PRINTED CIRCUIT BOARD LOCATION

	B213	CONTROL
	B5A	BOARD
	B5A	COVER
	B222	COVER
	B222
	J1

CONTROL

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PROCEDURE

Before starting the following procedure, refer to the topic “PC Board Troubleshooting Procedures” at the beginning of this section.

1.Conduct this procedure with the engine OFF.

2.With the 5/16” and 3/8” nut drivers, remove screws from the case top.

3.With the 1/2” wrench, remove the exhaust pipe from the muffler.

4.Remove the rubber gasket (cover seal) from the lift bail.

5.Remove the fuel cap and the rubber gasket for the fill tube.

6.Unlatch the double door assembly and use the slot head screw driver and 3/8” wrench to remove the door support rod from the door assembly.

7.Remove the case top and door assembly, then reinstall the fuel cap.

8.With the 5/16” nut driver, remove the con- trol board cover. See Figure F.16.

9.Remove the three molex plugs from the control board (J1, J2, J3). Also remove the three individual leads #213, #222, and #5A. See Figure F.16. Note lead place- ment.

10.Cut the wire ties and disconnect the bolt- ed connections from the current sensing leads (#254, #254A and #254B - see the Wiring Diagram). Count the turns in the current sensor and note for reassembly.

CAUTION

Be sure to follow the recommended static-free methods for handling printed circuit boards. Failure to do so can result in permanent dam- age to the equipment.

RANGER 300 D AND 300 DLX

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.

Lincoln Electric SVM148-B service manual Control Board Removal and Replacement

Models: SVM148-B