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Lincoln Electric SVM176-A service manual 10TROUBLESHOOTING and REPAIRF-10, GUN Test

Models: SVM176-A

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F-10TROUBLESHOOTING AND REPAIRF-10

GUN TEST (cont.)

FIGURE F.2 GUN CABLE TESTS

75

76

77

602

604

521

1/2 loop

25vdc Supply

Neg. Pos.

14Dia.

loop

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TEST PROCEDURE

1. To check the Gun Trigger:

a. Disconnect the three pin (lower) Amphenol connector from the feeder.

b. Use an ohmmeter to check for continuity between pins A & C of the cable connector. Trigger open = Infinity (no continuity). Trigger closed = 0 ohms (continuity).

2. To check the Reduced Speed Switch:

a. Disconnect the four pin (upper) Amphenol connector from the feeder.

b. Use an ohmmeter to check for continuity between pins B & D of the cable connector. Position 1 = Infinity (no continuity). Position 2 = 0 ohms (continuity).

If any of the above readings are incorrect, that switch or cable is defective.

3. To check the Wire Feed cable:

LN-23P

a, Connect a DC Power Supply to the LN- 23P. See Wire Feeder Test.

b. With the gun connected to the feeder and laying out straight, feed wire through the cable until several inches protrudes from the contact tip.

c. Clamp an ammeter probe around one of the motor wires (541 or 539).

d. Set the Wire Speed at MAX and feed wire with the cable as shown in Figure F.2, Test A and Test B and monitor the motor current.

Test A - 1/2 loop >1.0 amps.

Test B - 14” loop >2.3 amps.

If current readings are too high, clean cable (see Maintenance Section) and retest. If still too high, replace the gun.

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Lincoln Electric SVM176-A service manual 10TROUBLESHOOTING and REPAIRF-10, GUN Test
Page 37 Page 39

SVM176-A specifications

The Lincoln Electric SVM176-A is a robust and versatile semiautomatic wire feeder designed to cater to a wide range of welding applications. Known for its reliability and ease of use, the SVM176-A is particularly favored in both industrial and construction settings, where efficiency and performance are paramount.

One of the standout features of the SVM176-A is its compact design. This relatively lightweight unit is easy to transport and can fit into tight spaces, making it an ideal choice for mobile applications or projects that require more maneuverability. The unit's construction is durable and built to withstand the rigors of demanding work environments, ensuring longevity and consistent performance.

The SVM176-A supports various welding processes, including MIG (Metal Inert Gas) and flux-cored arc welding, providing versatility for different materials and thicknesses. This adaptability is enhanced by its ability to accommodate a variety of wire sizes, allowing users to select the ideal wire type for their specific project requirements. The equipment also features adjustable wire feed speed, helping to ensure optimal weld quality by allowing operators to tailor their settings based on the needs of the job.

Innovative technologies in the SVM176-A contribute to its performance. The unit is equipped with a digitally controlled microprocessor that streamlines operations, providing enhanced control over welding parameters. This advanced technology enables users to achieve precise welds consistently, minimizing the risk of defects and improving overall efficiency.

Another remarkable characteristic of the SVM176-A is its user-friendly interface. The unit features easy-to-read displays and intuitive controls, enabling operators to make quick adjustments without having to consult an extensive manual. This is particularly beneficial in fast-paced work environments where time is of the essence.

Furthermore, the Lincoln Electric SVM176-A boasts a range of safety features, including thermal overload protection and a sturdy casing, which safeguard both the equipment and the operator. With these characteristics combined, the SVM176-A stands out as a preferred choice for professional welders seeking reliability, versatility, and operational excellence in their equipment. This exceptional wire feeder continues to uphold Lincoln Electric's commitment to quality and performance in welding technology.