Maintenance & Troubleshooting, Months | Miller Electric 225, 300

SECTION 6 − MAINTENANCE & TROUBLESHOOTING

6-1. Routine Maintenance

Y Disconnect power before maintaining.

3 Months

Replace

Unreadable

Labels

Repair Or

Replace

Cracked

Cables

6 Months

12 Months

	Blow Out Or Vacuum
OR	Inside,
OR	During Heavy Service,
	Clean Monthly

Lubricate Shunt Block

(See Section 6-2)

6-2. Lubricating Shunt Block And Anti-Noise Adjustment

1

2

Tools Needed:

1/2 in

5/16 in

YTurn Off welding power source and disconnect input power.

1Wrapper Remove wrapper.

2Shunt Block

.Do not grease screw threads on shunt block.

Apply light coating of high-tempera- ture grease to shaded areas of both shunt blocks. Turn amperage con- trol handle to spread grease evenly.

3 Noise Adjustment Screws

If shunt block vibrates and

2becomes noisy, tighten adjustment screws 1/4 turn. Install wrapper, turn On unit, and check for shunt noise. Repeat procedure until noise stops. Do not overtighten. Call your nearest Factory Authorized Ser- vice Agent if noise continues.

Y Install wrapper before

3turning On power.

802 248-C

OM-316 Page 22

Image 26

Miller Electric 225, 300 manual Maintenance & Troubleshooting, Routine Maintenance, Months

Contents

Visit our website at OM-316087 083Q August ProcessesDescription Stick Smaw Welding From Miller to You Table of Contents Page Arc Welding Hazards Symbol UsageMarks a special safety message Electric Shock can kill Flying Metal can injure eyes ARC Rays can burn eyes and skinWelding can cause fire or explosion Buildup of GAS can injure or kill California Proposition 65 Warnings About Pacemakers Principal Safety StandardsEMF Information LES Décharges Électriques peuvent être mortelles Signification des symboles− Consignes DE Sécurité − À Lire Avant Utilisation LES Fumées ET LES GAZ peuvent être dangereux LES Pièces Chaudes peuvent cau- ser des brûlures graves LE Soudage peut causer un incen- die ou une explosionLES Particules Projetées peu- vent blesser les yeux LE Bruit peut affecter l’ouïe ’EMPLOI Excessif peut Faire Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser LES Pièces Mobiles peuvent cau- ser des blessures Rexdale, Rexdale Ontario Canada M9W 1R3 téléphone Principales normes de sécuritéInformation sur les champs électromagnétiques Consignes relatives aux stimulateurs cardiaques Manufacturer’s Rating Labels Symbols And Definitions− Definitions AC/DC Models − InstallationSpecifications AC Models For AC/DC Models Duty Cycle ChartsVoid warranty For AC Models For 220, 230/400, And 460 Volt Models 300/200 Amperes Volt-Ampere CurvesFor 115/230, 230 And 460 Volt Models 225/150 Amperes AC Amperes For 115/230 And 230 Volt Models 225 AmperesFor 220 Volt Model For 230/400 Volt Model Amperes Selecting a Location 18 in 457 mm for airflow Installing Work Cable onto Work Clamp Installing Electrode Holder And Work ClampInstalling Electrode Cable and Barrel onto Electrode Holder Weld Output Cables 47.5 Electrical Service Guide115 220 230 400 460 150 Tools Needed 16, 3/8 Cut tie wraps Turn Off unit and disconnect input power10 115 V Input Power Cord White Lead Wrapper Remove wrapper Jumper Leads Connected For 400 Volts Connected For 230 Volts Connecting Input Power Controls For AC/DC Models − OperationControls For DC Weld Output Controls For AC Models Lubricating Shunt Block And Anti-Noise Adjustment − Maintenance & TroubleshootingRoutine Maintenance Months Torx Reinstalling Amperage Adjustment IndicatorWrapper Remove wrapper from unit Crank Handle Shunt Shaft Troubleshooting Trouble Remedy − Electrical Diagrams Circuit Diagram For AC/DC 230 Volts Models 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 & Troubleshooting Welding Methods Shielded Metal Arc Welding Smaw Procedure Electrode And Amperage Selection Chart 10−30 Striking An ArcPositioning The Electrode Holder Electrode Angle Weld Bead CharacteristicsConditions That Affect Weld Bead Shape Arc Length Do not let weave width Electrode Movement During WeldingButt Joints Tack Welds Tee Joints Welding TroubleshootingLap Joints Porosity Lack Of Penetration Excessive SpatterIncomplete Fusion Waviness Of Bead Excessive PenetrationBurn-Through Distortion − Parts List Main Assembly AC/DC model illustrated Main Assembly Page Work like a Pro TM-188 304 Invision 354MP Support ServiceYour distributor also gives Your distributor and/or equipment manufacturer’s Miller Electric Mfg. CoFor assistance in filing or settling claims, contact Transportation Department