Reinstalling Amperage Adjustment Indicator | Miller Electric 300

6-3. Reinstalling Amperage Adjustment Indicator

5

6

2

7

4

3

1

3

For 225 A models, X = 2−1/2 in For 300 A models, X = 2−3/8 in

X

Viewed from right side of unit.

YTurn Off welding power source and disconnect input power.

1 Wrapper

Remove wrapper from unit.

2Crank Handle

3Shunt Shaft

4Transformer And Shunt (Located Inside Unit)

Insert crank handle onto shunt shaft protruding through front panel and turn crank handle to adjust shunt to the proper vale of “X”, de- pending on model (see detail of transformer and shunt.

Remove crank handle.

5 Pinion Gear

Install pinion gear onto front panel making sure anti-rotation pins are in holes on front panel.

6 Pointer Gear

Install pointer gear overtop of pinion gear and rotate so pointer is indicat- ing 130 Amps on ac Low Range scale (see example).

Install crank handle overtop the sta- tor/pinion gear assembly with the handle straight down. It may be necessary to turn the handle slight- ly so vertical alignment is possible.

7 Securing Screw

Install securing screw through han- dle, into threaded hole in shunt shaft. Tighten securely.

Reinstall wrapper.

Proper alignment of pointer and crank handle.

Tools Needed:

T-20 Torx

5/16 in

Ref. 218 237-A / 802 248-C

OM-316 Page 23

Image 27

Miller Electric 300 Reinstalling Amperage Adjustment Indicator, Wrapper Remove wrapper from unit Crank Handle Shunt Shaft

Contents

Stick Smaw Welding ProcessesDescription Visit our website at OM-316087 083Q August From Miller to You Table of Contents Page Electric Shock can kill Symbol UsageMarks a special safety message Arc Welding Hazards Buildup of GAS can injure or kill ARC Rays can burn eyes and skinWelding can cause fire or explosion Flying Metal can injure eyes California Proposition 65 Warnings Principal Safety Standards EMF InformationAbout Pacemakers LES Fumées ET LES GAZ peuvent être dangereux Signification des symboles− Consignes DE Sécurité − À Lire Avant Utilisation LES Décharges Électriques peuvent être mortelles LE Bruit peut affecter l’ouïe LE Soudage peut causer un incen- die ou une explosionLES Particules Projetées peu- vent blesser les yeux LES Pièces Chaudes peuvent cau- ser des brûlures graves LES Pièces Mobiles peuvent cau- ser des blessures Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peut Faire Consignes relatives aux stimulateurs cardiaques Principales normes de sécuritéInformation sur les champs électromagnétiques Rexdale, Rexdale Ontario Canada M9W 1R3 téléphone Symbols And Definitions − DefinitionsManufacturer’s Rating Labels AC Models − InstallationSpecifications AC/DC Models For AC Models Duty Cycle ChartsVoid warranty For AC/DC Models Volt-Ampere Curves For 115/230, 230 And 460 Volt Models 225/150 AmperesFor 220, 230/400, And 460 Volt Models 300/200 Amperes For 115/230 And 230 Volt Models 225 Amperes For 220 Volt Model For 230/400 Volt Model AmperesAC Amperes 18 in 457 mm for airflow Selecting a Location Weld Output Cables Installing Electrode Holder And Work ClampInstalling Electrode Cable and Barrel onto Electrode Holder Installing Work Cable onto Work Clamp 150 Electrical Service Guide115 220 230 400 460 47.5 Wrapper Remove wrapper Jumper Leads Turn Off unit and disconnect input power10 115 V Input Power Cord White Lead Tools Needed 16, 3/8 Cut tie wraps Connected For 400 Volts Connected For 230 Volts Connecting Input Power For DC Weld Output − OperationControls Controls For AC/DC Models Controls For AC Models Months − Maintenance & TroubleshootingRoutine Maintenance Lubricating Shunt Block And Anti-Noise Adjustment Reinstalling Amperage Adjustment Indicator Wrapper Remove wrapper from unit Crank Handle Shunt ShaftTorx Trouble Remedy Troubleshooting Circuit Diagram For AC/DC 230 Volts Models − Electrical Diagrams Circuit Diagram For AC/DC 115/230 Volts Models Circuit Diagram For 300/200 AC/DC 230/400 Volts Models Circuit Diagram For 225 230 Volts Models Circuit Diagram For 300 220 Volts Models Welding Methods Shielded Metal Arc Welding Smaw Procedure − Welding Methods & Troubleshooting Electrode And Amperage Selection Chart Striking An Arc Positioning The Electrode Holder10−30 Arc Length Weld Bead CharacteristicsConditions That Affect Weld Bead Shape Electrode Angle Tack Welds Electrode Movement During WeldingButt Joints Do not let weave width Porosity Welding TroubleshootingLap Joints Tee Joints Excessive Spatter Incomplete FusionLack Of Penetration Distortion Excessive PenetrationBurn-Through Waviness Of Bead Main Assembly AC/DC model illustrated − Parts List Main Assembly Page Work like a Pro TM-188 304 Invision 354MP Service Your distributor also givesSupport Transportation Department Miller Electric Mfg. CoFor assistance in filing or settling claims, contact Your distributor and/or equipment manufacturer’s