Miller Electric KC237900 Electric Shock can kill, Field Installation of Optional PRE- Flow Timer

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to proper output terminals on welding power source; ensure that proper polarity is maintained.

ELECTRIC SHOCK can kill.

Secure and insulate with sleeving any ex- posed cable connections to prevent contact with personnel, equipment, etc.

12.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.

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

3-8. FIELD INSTALLATION OF OPTIONAL PRE- FLOW TIMER

WARNING: ELECTRIC SHOCK can kill.

Do not touch live electrical parts.

Shut down welding power source, and dis- connect input power employing lockout/tagging procedure before beginning this installation.

Lockout/tagging procedures consist of pad- locking line disconnect switch in open position, removing fuses from fuse box, or shutting off and red-tagging circuit breaker or other discon- necting device.

IMPORTANT: All directions, such as left or right, are with respect to the operator facing the welding power source front panel. Retain all hardware removed during this procedure for re- installation.

A. Mechanical Installation (Figure 3-3)

1. Remove TIG-Unit top cover and left side panel.

CAUTION: METAL FILINGS AND/OR TOOL CONTACT WITH INTERNAL COMPONENTS can damage unit.

Cover internal components.

Clean unit, and remove internal covering ma- terial before resuming operation.

2.Mount Preflow ON/OFF switch S200 in the 1/2 in. (12.7 mm) diameter hole using supplied hardware.

3.Mount Preflow Time control with attached printed circuit card assembly TD2 in the 3/8 in. (9.5 mm) di- ameter hole using supplied hardware.

4.Affix supplied PREFLOW TIME label to front panel over both controls.

5.Attach supplied knob to Preflow Time control shaft.

B. Electrical Installation (Figure 3-2)

IMPORTANT: Before preceeding with this installation familiarize yourself with the circuit diagram provided in this manual.

For All Models:

1.Remove and discard jumper lead 70 from terminal 70 on terminal strip 1T and terminal 73 on terminal strip 2T.

2.Connect new lead 70 from the preflow timer assem- bly to terminal 70 on 1T.

3.Connect lead 73 from preflow timer assembly to ter- minal 73 on 2T.

4.Connect lead 33 from preflow timer assembly to ter- minal 33 on 1T.

5.For Models With Electroslope:

a.Disconnect lead 6 from electroslope edge con- nector pin X. Tape and tie off lead 6.

b.Insert new lead 92 into pin X where lead 6 was removed in Step a.

c.Connect new lead 6 from preflow timer assem- bly to terminal 6 on 1T.

6.For Models Without Electroslope: Tape and tie off leads 6 and 92.

7.For Models Effective With Serial No. JA373511:

a.Remove jumper link 6 from terminals 58 and 59 on terminal strip 1T

b.Connect lead 32 from preflow timer assembly to terminal 32 on 1T.

c.Connect new lead 30 from preflow timer as- sembly to terminal 30 on 2T.

d.Connect lead 37 from preflow timer assembly to terminal 37 on 2T.

e.Connect lead 59 from preflow timer assembly to terminal 59 on 1T.

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Contents OM-530J ProcessesDescription 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 ElectroslopeGAS/COOLANT on OFF PostflowRemote Hand Controls Highon Frequency OFF High FrequencyOn Time PULSES/SECONDBackground ST-009 477-D ST-007 648-G Electroslope Percentage Initial AmperagePercentage Upslope Rate 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 WeldingMaintenance & Troubleshooting Shielded Metal ARC Welding with TIG- UnitShutting Down Maintenance Schedule Frequency Internal CleaningWeld Cables Tungsten ElectrodeGreen Band Thorium Alloyed Tungsten Red BandZirconium Alloyed Tungsten Brown Band Circuit Board Handling Precautions Overload ProtectionTroubleshooting Trouble Probable Cause RemedyElectrical Diagrams OM-530 OM-530 OM-530 Certification for High Frequency ARC Welding Equipment GeneralDefinitions General Installation Procedures HIGH-FREQUENCY RadiationLocation Shielding Of Miscellaneous Wiring In The Weld- ing Zone Power ServiceMetal Buildings 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 TIG-RIG Accessories Gold Star SS AccessoriesAmpset Cordless Remote Current Control 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.