Lincoln Electric SVM146-A service manual Input Filter Capacitor Discharge Procedure

Models: SVM146-A

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F-11

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TROUBLESHOOTING & REPAIR

INPUT FILTER CAPACITOR DISCHARGE PROCEDURE (continued)

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WARNING

ELECTRIC SHOCK can kill.

• Have an electrician install and service this equipment.

Turn the input power off at the fuse box before working on equipment.

Do not touch electrically hot parts.

Prior to performing preventative mainte- nance, perform the following capacitor dis- charge procedure to avoid electric shock.

DISCHARGE PROCEDURE

1.Turn off input power and disconnect input power lines.

2.Remove the 5/16" hex head screws from the wraparound machine cover.

3.Be careful not to make contact with the capacitor terminals located at the bottom of the Input Power Board.

4.Obtain a high resistance and high wattage resistor (25-1000 ohms and 25 watts mini- mum). This resistor is not supplied with machine. NEVER USE A SHORTING STRAP FOR THIS PROCEDURE.

5.Locate the four capacitor terminals (large hex head cap screws) shown in Figure F.1. At the bottom of the PowerBoard

(203,206)(207,202)

6.Use electrically insulated gloves and insu- lated pliers. Hold the body of the resistor and connect the resistor leads across the two capacitor terminals. Hold the resistor in place for 10 seconds. DO NOT TOUCH CAPACITOR TERMINALS WITH YOUR BARE HANDS.

7.Repeat the discharge procedure for the capacitor on the other two terminals.

8.Check the voltage across the terminals of all capacitors with a DC voltmeter. Polarity of the capacitor terminals is marked on the PC board above the terminals. Voltage should be zero. If any voltage remains, repeat this capacitor discharge procedure.

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FIGURE F.1 – LOCATION OF INPUT FILTER CAPACITOR TERMINALS

POWER

BOARD

CAPACITOR

TERMINALS

POWER

RESISTOR

RIGHT SIDE OF MACHINE

INSULATED

 

PLIERS

INSULATED

GLOVES

PRO-CUT 80

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Lincoln Electric SVM146-A service manual Input Filter Capacitor Discharge Procedure

SVM146-A specifications

Lincoln Electric's SVM146-A is a versatile and powerful multi-process welding machine designed for professionals in various industries. Known for its robustness and reliability, this machine excels in both performance and user-friendly features, making it a popular choice among welders.

One of the standout features of the SVM146-A is its multi-process capability, allowing users to perform MIG, TIG, and stick welding using a single unit. This versatility is enhanced by Lincoln Electric's innovative Auto-Set technology, which automatically adjusts the machine's settings based on the selected process and materials being welded. This feature significantly reduces the time spent on setup and helps ensure optimal weld quality, even for less experienced operators.

The SVM146-A is powered by a reliable inverter design, which provides greater efficiency compared to traditional transformer-based machines. This compact and lightweight design allows for easy transport, making it ideal for job sites or remote locations. The inverter technology also contributes to enhanced arc stability and better overall performance, providing high-quality welds in less time.

Another key characteristic of this welding machine is its robust construction, designed to withstand the rigors of heavy industrial use. The SVM146-A features a durable chassis and control panel, ensuring longevity and reliability under challenging working conditions. Additionally, its intuitive interface allows users to easily navigate settings and make adjustments as needed.

Safety is a paramount concern in welding applications, and the SVM146-A is equipped with several safety features, including over-temperature and over-voltage protection, ensuring that the machine operates safely even in demanding environments. It also features a start inhibit system, preventing the machine from being started under unsafe conditions.

The SVM146-A is compatible with a variety of welding accessories and consumables, enhancing its flexibility and usability across different applications. Whether it’s automotive repair, heavy fabrication, or maintenance work, this welding machine adapts to various tasks, making it a valuable addition to any professional's toolkit.

In conclusion, Lincoln Electric's SVM146-A stands out as a multi-process welding machine that combines advanced technology, robust design, and user-friendly features. It is engineered for performance and reliability, making it an excellent investment for professionals dedicated to achieving high-quality welds.