Miller Electric OM-1313 manual Maintenance & Troubleshooting, Routine Maintenance, Months

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SECTION 4 – MAINTENANCE & TROUBLESHOOTING

4-1. Routine Maintenance

	Y	Disconnect power	. Maintain more often
	Y	Disconnect power	during severe conditions.
		before maintaining.	during severe conditions.
		before maintaining.

		3 Months
	Replace	Repair Or
		Replace
	Damaged Or
		Cracked
	Unreadable
		Cables And
	Labels
		Cords

Clean And

Tighten

Weld

Terminals

6 Months

Blow Out Or

Vacuum Inside

Remove drive roll and apply light coat of oil or grease to drive motor shaft.

4-2. Circuit Breakers CB1 And CB2

2 1

4-3. Changing Drive Roll And Inlet Wire Guide

Tools Needed:	1
Tools Needed:
	2

YTurn Off unit.

1 Circuit Breaker CB1

CB1 protects the transformer from overload. If CB1 opens, wire feeding stops.

2 Circuit Breaker CB2

CB2 protects the trigger circuit from overload. If CB2 opens, weld output stops.

Press button to reset circuit breaker. Close door.

Ref. ST-801 567

1 Drive Roll

Choose correct drive roll for wire type, and install as shown.

2 Inlet Wire Guide

Remove guide by pressing on barbed area, or cutting off one end near housing and pulling it out of hole. Push new guide into hole from rear until it snaps in place.

Ref. ST-801 569-A

OM-1313 Page 16

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Contents Arc Welding Power Source Wire Feeder Visit our website atSeptember MIG Gmaw Welding Flux Cored Fcaw WeldingFrom Miller to You Table of Contents Page Symbol Usage Marks a special safety messageArc Welding Hazards OM-1313ARC Rays can burn eyes and skin Principal Safety Standards Fire or Explosion hazardEMF Information About PacemakersVolt-Ampere Curves InstallationSpecifications Welding Power Source Duty Cycle And Overheating Exceeding duty cycle can damage unit and void warrantyWelding Gun Duty Cycle And Overheating OverheatingInstalling Work Clamp Installing Gas SupplyInstalling Welding Gun Setting Gun PolarityPolarity Changeover Label Tools Needed 11/16Installing Wire Spool And Adjusting Hub Tension Turn Off unit, and disconnect input powerReinstall wrapper Tools Needed 7/16 Changing Input VoltageElectrical Service Guide Selecting a Location And Connecting Input PowerInput Voltage Min Grounding Conductor Size In AWG/KcmilThreading Welding Wire OM-1313 Controls For Standard Units OperationFront Panel Controls Weld Parameter Chart Higher e.g Volts AC Lower e.g Volts ACOM-1313 Months Maintenance & TroubleshootingRoutine Maintenance Cleaning Or Replacing Gun Liner Disconnect gun firstHead Tube Remove nozzle, contact tip, and adapter Blow out gun casing Remove linerReplacing Switch And/Or Head Tube Remove handle locking nut Slide handleSee Section TroubleshootingReplacing Gun Contact Tip Electrical Diagram Circuit DiagramWire Feeder Power Source Gun Work Clamp Workpiece MIG Welding Gmaw GuidelinesTypical MIG Process Connections Shielding Gas Regulator/ FlowmeterTypical MIG Process Control Settings Wire Recommendation Wire SpeedSelect Wire Size Select VoltageHolding And Positioning Welding Gun Conditions That Affect Weld Bead Shape PushPerpendicular Drag Short Normal LongGun Movement During Welding Poor Weld Bead CharacteristicsGood Weld Bead Characteristics Troubleshooting Excessive Spatter Troubleshooting PorosityTroubleshooting Excessive Penetration Possible Causes Corrective ActionsTroubleshooting Burn-Through Troubleshooting Lack Of PenetrationTroubleshooting Incomplete Fusion Weld bead Troubleshooting Waviness Of BeadTroubleshooting Distortion Application Troubleshooting Guide For Semiautomatic Welding EquipmentCommon MIG Shielding Gases Welding arc not stable Wire slipping in drive rolls Readjust welding parametersWelding power source Drive rolls if necessaryOM-1313 Parts List Main AssemblyDia Part Mkgs Description Quantity Center Baffle w/Components Baffle, Center w/Components -1 Item M-15 Gun -1 Item Includes ItemsPage Support ServiceYour distributor also gives Owner’s Record