Lincoln Electric IM702-A Advanced Panel Controls, Do not USE 4-STEP if Using AN Amptrol Remote

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B-5

OPERATION

B-5

 

 

 

8.DIGITAL METER AND DISPLAY SWITCH– A 3- digit LED meter is used to monitor the preset and actual welding procedure based on the Display (momentary) switch position:

•Before welding with Display switch in center (nor- mal) position, the digital meter displays the preset welding amps set by Maximum Output control knob (See Item 6). If in Stick mode using REMOTE (See Item 5.), the digital meter displays the preset weld- ing amps set by the Remote control. (See Item 11)

•While welding with Display switch in center (normal) position, the digital meter displays the actual weld- ing amps with one amp resolution (XXX) and accu- racy within 4%+/-2A of reading.

•Any time in TIG mode and while pressing the Display switch to left, the digital meter displays the amps preset by the Minimum Output control knob (See Item 7).

•Any time in Stick mode and while pressing the Display switch to left, the digital meter displays the minimum amps rating of the machine (See Item 7).

•Any time, in either mode, while pressing the Display switch right to Volts position, the digital meter dis- plays actual output volts. Volts is displayed with 0.1 volt resolution (XX.X) and accuracy within 3%+/-1V of reading.

9.POSTFLOW TIME – This knob is used to set the TIG mode shielding gas postflow time over the range of about 2 to 60 seconds after the arc is shut off. The postflow on time status is indicated by the Green panel light.

•Gas preflow time for TIG mode is fixed at 0.5 sec- ond, with no panel control.

•Both time ranges are x2 extendable, if needed, by internal control box selection. (See Section B-7)

10.THERMAL SHUTDOWN LIGHT – This yellow LED panel light turns on if the machine output is shut- down because internal overheating has occurred, and turns off when the thermostat resets.

11.REMOTE RECEPTACLE – A 6-socket receptacle is provided for the connection of an Amptrol, or other, remote control: (See Figure B.2)

•When the Current Control Switch, (See Item 5), is in the REMOTE position the Amptrol, or other remote (10K pot), connected to the Remote recep- tacle controls the TIG or Stick mode output within the range preset by the Maximum and Minimum Output controls. (See Item 6 and Item 7, also 8 for meter display)

•When the Current Control Switch is in either LOCAL or REMOTE positions the arc start switch functions when connected to the Remote receptacle.

FIGURE B.2

 

REMOTE RECEPTACLE*

 

(Front View)

 

ARC START

 

REMOTE OUTPUT

SWITCH

 

CONTROL

 

C

Max

 

B

D

10K ohm

 

 

E

A

Min

 

F

*For 18-12P Plug

(LECO S12020-27)

ADVANCED PANEL CONTROLS

The following controls are included only if the Precision TIG 275 has the Advanced Control Panel (K1829-1) option installed: (Refer to Section B-10 Tig Weld Cycle Chart for graphic illustration of these TIG welding func- tions.)

12.TRIGGER SWITCH – This 2-position switch selects how the arc start switch ( connected to the above Remote receptacle) functions; in 2-Step or 4- Step mode:

CAUTION

•DO NOT USE 4-STEP IF USING AN AMPTROL REMOTE.

•Neither the arc start switch nor the output con- trol in the amptrol will function normally to shut off or control the out put. ONLY USE 2-STEP.

------------------------------------------------------------------------

•In 2-Step position the arc start switch functions the same as without the Advanced Panel:

1.Closing switch starts preflow, then a fixed (0.5 sec.) ramp time from Minimum (Start) setting level (See Item 7) to Weld setting.

2.Opening switch initiates Downslope ramp time setting (See Item 17), from Weld set- ting to Crater-fill level (See Item 7), which then stops the arc and initiates Postflow time (See Item 9).

Note: See Section B-7 for 2-Step operation during Downslope with Restart feature selected to be dis- abled, instead of enabled (as shipped).

PRECISION TIG 275

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Contents Precision TIG Safety California Proposition 65 WarningsElectric Shock can kill Cylinder may explode if damaged Précautions DE Sûreté Sûreté Pour Soudage a L’ArcThank You Table of Contents Precision TIG InstallationRated Input Single Phase only Recommended Input Wire and Fuse Sizes Physical DimensionsTemperature Ranges Additional Output CapacitySafety Precautions Input and Grounding Connections Output CABLES, Connections and Limitations Work Cable ConnectionStick Electrode Cable Connection TIG Torch Connection Figure A.2Auxiliary Power Connections Figure A.3Robotic Interface Connection Figure A.4Operation Product DescriptionPipe Thawing Welding SparksRecommended Processes and Equipment Recommended ProcessesProcess Limitations Equipment LimitationsControls and Settings Figure B.1 Control PanelOperation Do not USE 4-STEP if Using AN Amptrol Remote Advanced Panel ControlsOperation TIG Welding Features Internal SET UP ControlsStick Welding Features Figure B.3 Figure B.4 Using the Start Pedal Foot Amptrol K870-1 TIG Weld Cycle ChartSetup Guidelines for TIG Welding with AN Amptrol Figure B.5 Making a TIG Weld with AN Amptrol Recommended Electrode Amperage Ranges Precision TIGAccessories Factory Installed OptionsField Installed Options Optional EquipmentMaintenance Safety PrecautionsRoutine and Periodic Maintenance Overload ProtectionService Procedures Component AccessSpark GAP Adjustment UNDER-COOLER ServiceTroubleshooting HOW to USE Troubleshooting GuideCourse of Action SymptomsOutput Problems Meter Problems GAS ProblemsHI-FREQ Problems Preset & Output Control Problems Stick Welding Problems TIG Welding ProblemsTIG Problems Precision TIG 275 Wiring Diagram for Code SCR3 Enhanced Diagrams Dimension Print K1826-1 DOMESTIC, K1826-2 Canada and K1827-1 Export Precision TIG Warnung Aviso DE

IM702-A specifications

The Lincoln Electric IM702-A is a versatile and innovative welding machine that has garnered attention for its advanced features and robust performance. Designed for various welding applications, the IM702-A is a go-to choice for professionals in the industry, offering precision, reliability, and ease of use.

One of the standout characteristics of the IM702-A is its advanced inverter technology. This allows for a lightweight and compact design, making it easier to maneuver in tight spaces compared to traditional welding machines. The inverter technology also contributes to energy efficiency, reducing power consumption without compromising on performance.

The IM702-A features a multi-process capability, enabling it to perform MIG, TIG, and Stick welding with ease. This versatility makes it ideal for a wide range of projects, from industrial manufacturing to home repairs. Users can seamlessly switch between different welding processes, enhancing productivity and streamlining workflow.

In terms of user interface, the Lincoln Electric IM702-A is designed with convenience in mind. It boasts a digital display that provides real-time information on welding parameters, making it easier for operators to monitor and adjust settings as needed. The intuitive controls are user-friendly, allowing even novice welders to achieve professional-quality results.

The machine also includes advanced weld control features, such as precise amperage and voltage adjustments. These controls ensure that users can achieve optimal settings for different materials and thicknesses, resulting in clean, strong welds. Additionally, the IM702-A is equipped with an automatic voltage adjustment feature, which helps maintain consistent performance under varying input conditions.

Durability is another key selling point for the IM702-A. Built with high-quality materials and engineering, this welding machine is designed to withstand the rigors of daily use in demanding environments. Its rugged construction provides reliability and longevity, ensuring that it remains a valuable asset in any workshop.

Lastly, safety is a priority in the design of the IM702-A. It includes several built-in safety features, such as thermal overload protection and a stabilized arc performance that reduces the risk of arc blow, protecting both the operator and the equipment.

Overall, the Lincoln Electric IM702-A stands out in the welding market due to its advanced technologies, multi-process capabilities, user-friendly interface, and robust safety features, making it an excellent choice for professional welders seeking high-quality performance and versatility.
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