Miller Electric 225, 300 manual Troubleshooting, Trouble Remedy

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6-4. Troubleshooting





	Trouble		Remedy

No weld output; fan does not run.		Be sure line disconnect switch is in On position (see Section 4-10).

		Check and replace line fuses if open. Reset breakers if necessary (see Section 4-10).

Fan does not run; weld output okay.		Be sure nothing is blocking movement of fan. If fan does not run freely, replace fan motor.

Erratic weld current.		Clean and tighten all weld cable connections.

Erratic arc with excessive spatter.		Use dry, properly stored electrodes.

		Shorten arc length.

		Reduce amperage setting (see Section 5-1).

Electrode freezing to work.		Increase amperage setting (see Section 5-1).

		Increase arc length.

		Use dry, properly stored electrodes.

Noise and vibration from shunt block.		Lubricate shunt block and/or tighten adjustment screws (see Section 6-2).

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Contents Processes DescriptionVisit our website at OM-316087 083Q August Stick Smaw WeldingFrom Miller to You Table of Contents Page Symbol Usage Marks a special safety messageArc Welding Hazards Electric Shock can killARC Rays can burn eyes and skin Welding can cause fire or explosionFlying Metal can injure eyes Buildup of GAS can injure or killCalifornia Proposition 65 Warnings EMF Information Principal Safety StandardsAbout Pacemakers Signification des symboles − Consignes DE Sécurité − À Lire Avant UtilisationLES Décharges Électriques peuvent être mortelles LES Fumées ET LES GAZ peuvent être dangereuxLE Soudage peut causer un incen- die ou une explosion LES Particules Projetées peu- vent blesser les yeuxLES Pièces Chaudes peuvent cau- ser des brûlures graves LE Bruit peut affecter l’ouïeRisque D’INCENDIE OU D’EXPLO LA Chute DE L’APPAREIL peut blesser’EMPLOI Excessif peut Faire LES Pièces Mobiles peuvent cau- ser des blessuresPrincipales normes de sécurité Information sur les champs électromagnétiquesRexdale, Rexdale Ontario Canada M9W 1R3 téléphone Consignes relatives aux stimulateurs cardiaques− Definitions Symbols And DefinitionsManufacturer’s Rating Labels − Installation SpecificationsAC/DC Models AC ModelsDuty Cycle Charts Void warrantyFor AC/DC Models For AC ModelsFor 115/230, 230 And 460 Volt Models 225/150 Amperes Volt-Ampere CurvesFor 220, 230/400, And 460 Volt Models 300/200 Amperes For 220 Volt Model For 230/400 Volt Model Amperes For 115/230 And 230 Volt Models 225 AmperesAC Amperes Selecting a Location 18 in 457 mm for airflowInstalling Electrode Holder And Work Clamp Installing Electrode Cable and Barrel onto Electrode HolderInstalling Work Cable onto Work Clamp Weld Output CablesElectrical Service Guide 115 220 230 400 46047.5 150Turn Off unit and disconnect input power 10 115 V Input Power Cord White LeadTools Needed 16, 3/8 Cut tie wraps Wrapper Remove wrapper Jumper LeadsConnected For 400 Volts Connected For 230 Volts Connecting Input Power − Operation ControlsControls For AC/DC Models For DC Weld Output Controls For AC Models − Maintenance & Troubleshooting Routine MaintenanceLubricating Shunt Block And Anti-Noise Adjustment MonthsWrapper Remove wrapper from unit Crank Handle Shunt Shaft Reinstalling Amperage Adjustment IndicatorTorx Troubleshooting Trouble Remedy− Electrical Diagrams Circuit Diagram For AC/DC 230 Volts ModelsCircuit 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 ProcedureElectrode And Amperage Selection Chart Positioning The Electrode Holder Striking An Arc10−30 Weld Bead Characteristics Conditions That Affect Weld Bead ShapeElectrode Angle Arc LengthElectrode Movement During Welding Butt JointsDo not let weave width Tack WeldsWelding Troubleshooting Lap JointsTee Joints PorosityIncomplete Fusion Excessive SpatterLack Of Penetration Excessive Penetration Burn-ThroughWaviness Of Bead Distortion− Parts List Main Assembly AC/DC model illustratedMain Assembly Page Work like a Pro TM-188 304 Invision 354MP Your distributor also gives ServiceSupport Miller Electric Mfg. Co For assistance in filing or settling claims, contactYour distributor and/or equipment manufacturer’s Transportation Department