Maintenance, Visual Inspection | Lincoln Electric IM732-B guide

	MAINTENANCE	D-1
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SAFETY PRECAUTIONS

WARNING

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ELECTRIC SHOCK can kill.

• Do not touch electrically live parts or electrode with skin or wet clothing.

• Insulate yourself from work and ground

• Always wear dry insulating gloves.

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EXPLODING PARTS can cause injury.

• Failed parts can explode or cause other

parts to explode when power is applied.

• Always wear a face shield and long sleeves when servicing.

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See additional warning information throughout this operator’s manual and the Engine manual as well.

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CAPACITOR DISCHARGE PROCEDURE

1.Obtain a power resistor (25 ohms, 25 watts).

2.Hold resistor body with electrically insulated glove. DO NOT TOUCH TERMINALS. Connect the resis- tor terminals across the two studs in the position shown. Hold in each position for 1 second. Repeat for all four capacitors.

RESISTOR

CAPACITOR

TERMINALS

3.Use a DC voltmeter to check that voltage is not present across the terminals on all four capacitors.

VISUAL INSPECTION

Clean interior of machine with a low pressure air stream. Make a thorough inspection of all compo- nents. Look for signs of overheating, broken leads or other obvious problems. Many problems can be uncovered with a good visual inspection.

ROUTINE MAINTENANCE

1.Every 6 months or so the machine should be cleaned with a low pressure airstream. Keeping the machine clean will result in cooler operation and higher reliability. Be sure to clean these areas:

•All printed circuit boards

•Power switch

•Main transformer

•Input rectifier

•Auxiliary Transformer

•Reconnect Switch Area

•Fan (Blow air through the rear louvers)

2.Examine the sheet metal case for dents or breakage. Repair the case as required. Keep the case in good con- dition to insure that high voltage parts are protected and correct spacings are maintained. All external sheet metal screws must be in place to insure case strength and electrical ground continuity.

PERIODIC MAINTENANCE

Overload Protection

The machine is electrically protected from producing high output currents. Should the output current exceed 430A, an electronic protection circuit will reduce the current to approximately 100A. The machine will continue to produce this low current until the protection circuit is reset. Reset occurs when the output load is removed.

Thermal Protection

Thermostats protect the machine from excessive operating temperatures. Excessive temperatures may be caused by a lack of cooling air or operating the machine beyond the duty cycle and output rating. If excessive operating temperature should occur, the thermostat will prevent output voltage or current. The meter will remain energized during this time.

Thermostats are self-resetting once the machine cools sufficiently. If the thermostat shutdown was caused by excessive output or duty cycle and the fan is operating normally, the Power Switch may be left on and the reset should occur within a 15 minute period.

INVERTEC® V350-PRO (CE)

IM732-B specifications

The Lincoln Electric IM732-B is a cutting-edge inverter-based multi-process welding machine designed for both professional welders and industrial applications. It offers an array of features that enhance its versatility, efficiency, and ease of use, making it an indispensable tool in various welding environments.

One of the standout features of the IM732-B is its ability to perform multiple welding processes. This machine seamlessly transitions between MIG, TIG, and stick welding, allowing users to effortlessly switch techniques depending on the job requirements. This flexibility makes it suitable for a diverse range of materials, including steel, stainless steel, and aluminum.

Equipped with advanced inverter technology, the IM732-B provides superior arc stability and reduced spatter, resulting in cleaner welds and less rework. This technology also contributes to the machine’s lightweight and compact design, making it highly portable for on-site jobs or restricted workspace environments. Its built-in thermal overload protection ensures that the machine operates safely and maintains optimal performance even under demanding conditions.

The digital display and intuitive user interface of the IM732-B simplify the setup and adjustment processes. Users can easily monitor welding parameters and make real-time adjustments, enhancing precision and control during the welding process. Additionally, the machine features a variety of preset welding programs tailored for different materials and applications, enabling even novice welders to achieve professional results.

Another notable characteristic of the Lincoln Electric IM732-B is its energy efficiency. The inverter technology consumes less power compared to traditional welding machines, reducing operational costs and making it an eco-friendly choice for businesses aiming to minimize their carbon footprint.

Durability is also a key aspect of the IM732-B’s design. Constructed with rugged materials and components, it is built to withstand the rigors of daily use in challenging environments. This reliability translates to lower maintenance costs and a longer service life.

In conclusion, the Lincoln Electric IM732-B stands out as a versatile and technologically advanced welding machine, catering to the needs of modern welders. With its multi-process capabilities, superior arc performance, user-friendly interface, energy efficiency, and robust construction, it is a trusted choice for both industrial applications and professional welding projects.

Lincoln Electric IM732-B manual Maintenance, Capacitor Discharge Procedure, Visual Inspection

Models: IM732-B

MAINTENANCE