Miller Electric KC237900 manual Procedure When Using An External 115 Volts AC Power Supply

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side 115 volts ac power supply. The second method (B) is to connect the TIG-Unit to 230 volts ac inside the welding power source.

A.Procedure When Using An External 115 Volts AC Power Supply

IMPORTANT: Read entire Section 8 on equipment that produces output in the radio frequency range, such as high-frequency starters, for site selection information and installation requirements before beginning the in- stallation procedures.

1.Remove the six sheet-metal screws from top cover of welding power source (three from each end). It is not necessary to remove the two screws next to lift- ing eye (top cover of welding power source is not re- moved).

2.Remove top cover from TIG-Unit, and lay it aside.

IMPORTANT: The TIG-Unit is shipped with two 5 ft. (1.5

m)leads (with terminal lugs attached) inside component bag under front access door of TIG-Unit. These leads are for 230 volts ac internal connections only (Proce- dure B), and should be discarded when a 115 volts ac external power supply is used.

3.Place TIG-Unit on top of welding power source (controls facing same direction); lifting eye from welding power source fits through bottom of TIG- Unit (into U-shaped section at bottom of TIG-Unit’s lifting eye bracket.)

4.Insert supplied 3/4 in. (19mm) diameter bolt (in bag) through U-shaped section at bottom of TIG-Unit’s lifting eye bracket and lifting eye of welding power source; before securing bolt, align end hole in bot- tom of TIG-Unit with end holes in top of welding power source.

5.Install the six sheet-metal screws (removed in Step 1) into end holes to secure TIG-Unit to top of weld- ing power source. Secure 3/4 in. (19mm) diameter bolt.

6.Make up a cord (16/3 is recommended) of the de- sired length to connect the 115 volts ac power sup- ply.

7.Route cord through supplied connector on rear of TIG-Unit, and attach it to terminal labeled 115V on terminal strip TE1 located on center mounting panel toward back of TIG-Unit (see Figure 3-2). (A ground stud is provided at extreme rear end of this terminal strip; use if desired.) Secure cord in connector.

8.Attach an appropriate plug to the remaining end of the 115 volts ac cord.

WARNING: ELECTRIC SHOCK can kill.

• Do not touch live electrical parts.

•Do not connect the 115 volts ac plug to its power supply until this entire installation is com- plete and the TIG-Unit is ready to be put in oper- ation.

9.Open access door on lower front of TIG-Unit, re- move component bag, and route short intercon- necting cord(approximately 4 ft or 1.2 m; see Figure 3-1) with plug attached through access opening on left side of TIG-Unit. Connect plug to REMOTE 14 (Amperage And Contactor Control) receptacle on welding power source; align keyway, insert plug, and rotate threaded collar clockwise.

10.Attach plug from remote control cord (long cord, ap- proximately 28 ft. or 8.5 m) to amphenol receptacle on left side of TIG-Unit (under front access door); align keyway, insert plug, and rotate threaded collar clockwise. Route remote control cord through ac- cess opening on left side of TIG-Unit to desired lo- cation.

11.Ensure that the AMPERAGE control switch and OUTPUT (CONTACTOR) switch on welding power source are both in the REMOTE position.

12.Open access door on front of welding power source, and remove welding cables from the output termi- nals.

13.Reinstall welding cables to proper output terminals on front of TIG-Unit (labeled ELECTRODE and WORK).

14.Remove and discard bottom center sheet-metal screw from right side panel of welding power source.

15.Route welding cables (labeled POSITIVE and NEGATIVE) from rear of TIG-Unit down right side of welding power source (see Figure 3-1).

16.Slide supplied clamps (in bag) over welding cables, and attach clamps with new sheet-metal screw (in bag) to bottom center hole on right side panel of welding power source; before securing sheet-metal screw, route welding cables from rear of TIG-Unit to output terminals under front access door on welding power source; connect POSITIVE lead (No. 17) and NEGATIVE lead (No. 12) to correspondingly la- beled terminals on the welding power source (see Figure 3-1).

17.If an Electroslope and/or Pulser is to be installed, see Section 3-5 and/or 3-6, and install the desired units at this point.

18.Reinstall cover onto TIG-Unit, and connect the nec- essary associated equipment (shielding gas, water, etc.).

B.Procedure When Using 230 Volts AC Internal Power

IMPORTANT: Read entire Section 8 on equipment that produces output in the radio frequency range, such as high-frequency starters, for site selection information and installation requirements before beginning the in- stallation procedures.

1.Remove top cover from welding power source, and lay it aside.

2.Remove top cover from TIG-Unit, and place it on welding power source. Be sure that front of cover is

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Contents Description OM-530JProcesses From Miller to You Table of Contents Electrical Diagrams Parts ListList of Charts and Tables Certification for High Frequency ARC Welding EquipmentSafety Precautions and Signal Words SpecificationsGeneral Information and Safety Safety Alert Symbol and Signal WordsInstallation or Relocation DescriptionSite Selection Transporting MethodsComponent Installation Field Installation of TIG-UNITProcedure When Using An External 115 Volts AC Power Supply Procedure When Using 230 Volts AC Internal PowerProcedure When Mounting To 600 Ampere Welding Power Sources Field Installation of Pulser Field Installation of ElectroslopeProcedure for Remote TIG-UNIT IN- Stallation Location Of Relay CR2 And Other ComponentsField Installation of Optional PRE- Flow Timer Mechanical Installation FigureElectrical Installation Figure Electric Shock can killFront Panel Mounting Hole Layout Field Installation of Optional Spot Timer Figure Remote Amperage Output ContactorGAS GAS OUT Coolant Coolant OUTOn OFF Overload Press to Start Coolant Connections Optional FigureAmperage Amperage Adjustmentpanel Operator ControlsWithout Electroslope With ElectroslopeRemote Hand Controls GAS/COOLANT on OFFPostflow Highon Frequency OFF High FrequencyBackground On TimePULSES/SECOND ST-009 477-D ST-007 648-G Percentage Upslope Rate ElectroslopePercentage Initial Amperage Preflow Time Control & Switch Optional Figure Spot Time Control and Switch Optional FigurePercentage Final Amperage Preflow TimeSequence of Operation Fumes and Gases can seriously harm your healthHOT METAL, SPATTER, and Slag can cause fire and burns GAS Tungsten ARC WeldingShutting Down Maintenance & TroubleshootingShielded Metal ARC Welding with TIG- Unit Maintenance Schedule Frequency Internal CleaningWeld Cables Tungsten ElectrodeZirconium Alloyed Tungsten Brown Band Green BandThorium Alloyed Tungsten Red Band Circuit Board Handling Precautions Overload ProtectionTroubleshooting Trouble Probable Cause RemedyElectrical Diagrams OM-530 OM-530 OM-530 Definitions Certification for High Frequency ARC Welding EquipmentGeneral Location General Installation ProceduresHIGH-FREQUENCY Radiation Metal Buildings Shielding Of Miscellaneous Wiring In The Weld- ing ZonePower Service Installation Guidelines Checklist Parts List Main AssemblyQuantity Item Dia Part Model Description Panel, Control Rear w/Components 111 HF Panel -1 ItemPanel, Front w/Components C19 028 CAPACITOR, polye met film 1uf 250VDC Switch, Polarity 300 & 400A Models -4 Item 011041 Pulser Optional -4 ItemElectroslope 9 Optional -4 Item Switch, Polarity 500 & 600A Models -4 Item 048Panel, Control Front w/Components Optional Equipment Page Ampset Cordless Remote Current Control TIG-RIG AccessoriesGold Star SS Accessories Call Miller for your local Miller distributor Owner’s Record Miller Electric Mfg. Co

KC237900 specifications

The Miller Electric KC237900 is a standout model in the realm of welding technology, specifically designed for versatility and efficiency. This machine embodies Miller's commitment to innovation and quality, making it a popular choice among professionals and hobbyists alike.

One of the main features of the KC237900 is its advanced inverter technology, which allows the unit to operate efficiently across a range of welding applications. This technology ensures that the welder maintains a stable arc for precision welding, even on thin materials. The inverter design also contributes to a lighter and more compact machine, enhancing portability without compromising on power.

The KC237900 supports multiple welding processes, including MIG, Flux-Cored, and Stick welding. This versatility makes it suitable for a variety of projects, from automotive repairs to intricate fabrication tasks. The machine’s ability to handle diverse materials, including steel, stainless steel, and aluminum, further expands its application scope.

Another characteristic of the Miller Electric KC237900 is its user-friendly interface. The digital display provides clear information on amperage and voltage settings, allowing welders to make quick adjustments as needed. Additionally, the intuitive control panel simplifies the operation, making it accessible to users with varying skill levels.

The arc technology integrated into the KC237900 contributes to its smooth and stable welding performance. The unit utilizes Miller's Auto-Set feature, which automatically adjusts parameters based on material thickness and type. This feature not only speeds up the setup process but also enhances the overall weld quality.

Durability is another key aspect of the KC237900. Built with robust materials, the machine is designed to withstand the rigors of job site conditions. Its protective features, such as thermal overload protection, ensure that the unit operates safely and efficiently.

In conclusion, the Miller Electric KC237900 is a high-performance welding machine that combines advanced inverter technology, versatility, and user-friendly features. With its ability to handle multiple welding processes and materials, along with its focus on reliability and ease of use, it stands out as an excellent choice for both experienced welders and newcomers to the trade. Whether for professional use or personal projects, the KC237900 delivers the performance and quality that Miller Electric is known for.
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