B-1

OPERATION

B-1

OPERATING INSTRUCTIONS

WARNING

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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FUMES AND GASES can be danger-

ous.

• Keep your head out of fumes.

• Use ventilation or exhaust to remove fumes from breathing zone.

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WELDING SPARKS can cause fire or explosion.

•Keep flammable material away.

•Do not weld on closed containers.

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ARC RAYS can burn eyes and skin.

•Wear eye, ear and body protection.

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See additional warning information at front of this operator’s manual.

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PRODUCT DESCRIPTION

The DC-1000 is an SCR-controlled three phase DC power source. It is designed with a single range potentiometer control for submerged arc or open arc automatic and semiautomatic welding. It can be used for air carbon arc cutting with carbon rods up to and including 5/8” not(15.9mm) dia. The DC-1000 (below

code 9500) is recommended for stick welding or for solid wire and gas in the short arc welding mode. With the addition of the 500 amp output stud to DC- 1000 models above code 9500, GMAW procedures can be performed. This connection provides the enhanced lower current arc characteristics required for this type of welding.

The DC-1000 is provided with a three position mode switch that selects CV Innershield®, CV Submerged Arc or CC (Variable Voltage) Submerged Arc.

The unit is designed to be used with the NA-5, NA-5R and NA-3 automatics, the LT-56 and LT-7 tractors, and can also be used with the LN-7, LN-8 or LN-9 semiautomatic wire feeders.

NOTE: All P.C. boards are protected by a moisture resistant coating. When the welder is operated, this coating will “bake off” of certain power resistors that normally operate at high temperatures emitting some smoke and odor for a short time. These resistors and the P.C. board beneath them may become blackened. This is a normal occurrence and does not damage the component or affect the machine performance.

TO SET POLARITY

Turn off the DC-1000 and connect the electrode cable to the “Positive” or “Negative” studs depending upon the electrode polarity desired. Connect the work cable to the other stud. (See “Output Connections”).

Set the “Electrode Negative-Electrode Positive” switch to correspond to the polarity of the electrode cable connection. This switch setting is necessary for proper operation of some Lincoln wire feeders and does not change the welding polarity.

Starting the Machine - The push button power “on” switch at the extreme right side of the control panel energizes and closes the three phase input contactor from a 115 volt auxiliary transformer. This in turn ener- gizes the main power transformer.

The red light below the stop-start button indicates when the input contactor is energized.

Output Control - The output control in the center of the control panel is a continuous control of the machine output. The control may be rotated from min. to max. while under load to adjust the machine output.

The machine is equipped with line voltage compensa- tion as a standard feature. This will hold the output rel- atively constant except at maximum output of the machine, through a fluctuation of +/- 10% of input line voltage.

Output Control at DC-1000 or Output Control Remote Switch

The toggle switch on the control panel labeled “Output Control at DC-1000” / “Output Control Remote” gives the operator the option of controlling the output at the machine control panel or at a remote station. For remote control, the toggle switch is set in the “Output Control Remote” position and controlled at the wire feed unit control or by connecting a K775 control to the appropriate terminals (as indicated on the connec- tion diagram) on the terminal strip at the front of the machine. For control at the machine control panel, the toggle switch is set in the “Output Control at DC-1000” position.

IDEALARC® DC-1000

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Lincoln Electric IM420-D manual Operation, To SET Polarity, Fumes and Gases can be danger
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IM420-D specifications

The Lincoln Electric IM420-D is a high-performance industrial welding machine that offers advanced features and technologies tailored for demanding welding environments. Designed for arc welding applications, the IM420-D is a versatile solution suitable for various welding processes, including MIG, TIG, and stick welding. This flexibility makes it an excellent choice for both professional welders and industries that require a reliable and efficient welding system.

One of the standout features of the IM420-D is its impressive output range. With a maximum output of 420 amps, this machine can handle thick materials and deliver deep penetration, making it ideal for heavy-duty applications. The machine also provides consistent arc stability, ensuring high-quality welds with minimal spatter. This functionality is essential in maintaining productivity and reducing the need for post-weld cleanup.

The IM420-D incorporates advanced digital control technology that enhances user experience and precision. The intuitive interface allows operators to quickly adjust settings for voltage, wire feed speed, and other parameters, ensuring optimal performance for diverse welding tasks. Additionally, the machine is equipped with a memory function that saves preferred settings, enabling quick setup for repetitive jobs.

Another notable characteristic of the IM420-D is its robust construction. Built to withstand the rigors of a manufacturing environment, the machine features a durable casing designed to protect key components from dust, moisture, and impact. This reliability results in fewer maintenance issues and extended service life, contributing to lower operational costs over time.

The IM420-D also includes a range of safety features that prioritize operator protection. Overheat protection, voltage fluctuation safeguards, and high-quality electrical insulation ensure a safe working environment, minimizing the risk of accidents during operation.

In conclusion, the Lincoln Electric IM420-D is an exceptional welding machine that combines high output, advanced digital technology, and robust design. With its user-friendly controls and safety features, it meets the needs of professional welders and industries seeking efficiency and quality in their welding operations. Whether for manufacturing, construction, or repair work, the IM420-D stands out as a top-tier choice in the welding equipment market.
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