Miller Electric KC237900 manual Green Band, Thorium Alloyed Tungsten Red Band

Page 26

Table 6-2. Tungsten Size Chart

Electrode Diameter

 

Amperage Range - Polarity - Gas Type

 

 

 

 

 

 

Pure Tungsten

DC-Argon Electrode

DC-Argon Electrode

AC-Argon Using

AC-Argon Balanced

(Green Band)

Negative/Straight Polarity

Positive/Reverse Polarity

High Frequency

Wave Using High Freq.

 

 

 

 

 

.010”

Up to 15

*

Up to 15

Up to 10

.020”

5-20

*

5-20

10-20

.040”

15-80

*

10-60

20-30

1/16”

70-150

10-20

50-100

30-80

3/32”

125-225

15-30

100-160

60-130

1/8”

225-360

25-40

150-210

100-180

5/32”

360-450

40-55

200-275

160-240

3/16”

450-720

55-80

250-350

190-300

1/4”

720-950

80-125

325-450

250-400

2% Thorium Alloyed

 

 

 

 

Tungsten

 

 

 

 

(Red Band)

 

 

 

 

 

 

 

 

 

.010”

Up to 25

*

Up to 20

Up to 15

.020”

15-40

*

15-35

5-20

.040”

25-85

*

20-80

20-60

1/16”

50-160

10-20

50-150

60-120

3/32”

135-235

15-30

130-250

100-180

1/8”

250-400

25-40

225-360

160-250

5/32”

400-500

40-55

300-450

200-320

3/16”

500-750

55-80

400-500

290-390

1/4”

750-1000

80-125

600-800

340-525

Zirconium Alloyed

 

 

 

 

Tungsten

 

 

 

 

(Brown Band)

 

 

 

 

 

 

 

 

 

.010”

*

*

Up to 20

Up to 15

.020”

*

*

15-35

5-20

.040”

*

*

20-80

20-60

1/16”

*

*

50-150

60-120

3/32”

*

*

130-250

100-180

1/8”

*

*

225-360

160-250

5/32”

*

*

300-450

200-320

3/16”

*

*

400-550

290-390

1/4”

*

*

600-800

340-525

*NOT RECOMMENDED

The figures listed are intended as a guide and are a composite of recommendations from American Welding Society (AWS) and electrode manufacturers.

S-0009/8-88

6-3. SPARK GAP ADJUSTMENT (Figure 6-3)

IMPORTANT: Spark gaps widen with normal operation.

 

At regular inspections, check and maintain the spark air

It is necessary to readjust the spark gaps every three to

gap to ensure consistent welding results and com-

four months or when intermittent operation occurs. Nor-

pliance with FCC radiation regulations.

mal spark gap setting is 0.008 in. (0.203 mm).

IMPORTANT: Do not clean or dress points since the

 

High-frequency output varies with the spark gap setting. When a great amount of high frequency is necessary, the spark gaps can be adjusted to 0.010 in. (0.254 mm).

material at the tips is tungsten and impossible to file. The entire point should be replaced when the tungsten section has completely disappeared.

This, however, increases high-frequency radiation

 

which increases interference with communications

This unit is provided with a spark gap assembly located

equipment. It is suggested that a minimum spark gap

inside the unit in the lower right side (refer to Parts List

setting be used.

views). To adjust spark gaps, proceed as follows:

OM-530 Page 22

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Contents Description OM-530JProcesses From Miller to You Table of Contents List of Charts and Tables Electrical DiagramsParts List Certification for High Frequency ARC Welding EquipmentGeneral Information and Safety Safety Precautions and Signal WordsSpecifications Safety Alert Symbol and Signal WordsSite Selection Installation or RelocationDescription 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 ComponentsElectrical Installation Figure Field Installation of Optional PRE- Flow TimerMechanical Installation Figure Electric Shock can killFront Panel Mounting Hole Layout Field Installation of Optional Spot Timer Figure Remote Amperage Output ContactorOn OFF Overload Press to Start GAS GAS OUTCoolant Coolant OUT Coolant Connections Optional FigureWithout Electroslope Amperage Amperage AdjustmentpanelOperator Controls 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 Percentage Final Amperage Preflow Time Control & Switch Optional FigureSpot Time Control and Switch Optional Figure Preflow TimeHOT METAL, SPATTER, and Slag can cause fire and burns Sequence of OperationFumes and Gases can seriously harm your health GAS Tungsten ARC WeldingShutting Down Maintenance & TroubleshootingShielded Metal ARC Welding with TIG- Unit Weld Cables Maintenance Schedule FrequencyInternal Cleaning 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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