Miller Electric 280 NT manual From Miller to You

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Miller is the first welding equipment manufacturer in the U.S.A. to be registered to the ISO 9001:2000 Quality System Standard.

From Miller to You

Thank you and congratulations on choosing Miller. Now you can get the job done and get it done right. We know you don’t have time to do it any other way.

That’s why when Niels Miller first started building arc welders in 1929, he made sure his products offered long-lasting value and superior quality. Like you, his customers couldn’t afford anything less. Miller products had to be more than the best they could be. They had to be the best you could buy.

Today, the people that build and sell Miller products continue the tradition. They’re just as committed to providing equipment and service that meets the high standards of quality and value established in 1929.

This Owner’s Manual is designed to help you get the most out of your Miller products. Please take time to read the Safety precautions. They will help you protect yourself against potential hazards on the worksite.

We’ve made installation and operation quick and easy. With Miller you can count on years of reliable service with proper maintenance. And if for some reason the unit needs repair, there’s a Troubleshooting section that will help you figure out what the problem is. The parts list will then help you to decide the exact part you may need to fix the problem. Warranty and service information for your particular model are also provided.

Miller Electric manufactures a full line

of welders and welding related equipment. For information on other quality Miller

products, contact your local Miller distributor to receive the latest full line catalog or individual specification sheets. To locate your nearest distributor or service agency call 1-800-4-A-Miller, or visit us at www.MillerWelds.com on the web.

Mil_Thank 4/05

Working as hard as you do

−every power source from Miller is backed by the most hassle-free warranty in the business.

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Contents Description OM-4430217 243RProcesses File Engine DriveFrom Miller to You Table of Contents − Maintenance & Troubleshooting Electric Shock can kill Symbol UsageArc Welding Hazards HOT Parts can cause severe burnsARC Rays can burn eyes and skin Fumes and Gases can be hazardousBuildup of GAS can injure or kill Welding can cause fire or explosionEngine Hazards Compressed Air HazardsFire or Explosion hazard Welding Wire can cause injuryHOT Parts can cause burns and injury Falling Unit can cause injuryEMF Information Principal Safety StandardsCalifornia Proposition 65 Warnings Radiation can cause interferenceUN Choc Électrique peut tuer Signification des symboles− Consignes DE Sécurité − Lire Avant Utilisation Indique des instructions spécifiquesLE Soudage peut provoquer un in cendie ou une explosion DES Pièces Chaudes peuvent provoquer des brûlures gravesLES Fumées ET LES GAZ peuvent être dangereux DES Organes Mobiles peuvent pro voquer des blessures LE Bruit peut affecter l’ouïe’EXPLOSION DE LA Batterie peu Risque D’INCENDIE OU D’EXPLO- Sion LA Chaleur DU Moteur peut pro- voquer un incendie’AIR Comprimé peut provoquer des blessures LES Fils DE Soudage peuvent provoquer des blessures LE Surchauffement peut endom- mager le moteur électriqueDES Organes Mobiles peuvent provoquer des blessures ’EMPLOI Excessif peutInformation EMF Proposition californienne 65 AvertissementsPrincipales normes de sécurité En ce qui concerne les implants médicauxSymbol Definitions − DefinitionsDimensions, Weights, and Operating Angles − SpecificationsWeld, Power, And Engine Specifications DescriptionRPM Weld Dimensions For Units With Optional Running GearFuel Consumption While Welding And Using Generator Power 1800 RPMGenerator Power Curve AC Amperes100% Duty Cycle at 280 Amperes DC/CC TIG Mode Volt-Ampere CurvesDuty Cycle CV/DC MIG Mode Stick And MIG Mode Volt-Ampere CurvesCC/DC Stick Mode − Installation Installing Welding GeneratorEngine Prestart Checks Oil+ − Connecting Or Replacing The BatteryReplacing The Battery Connect negative − cable lastStop engine and let cool Installing Exhaust PipeTools Needed 1/2 Failure to properly connect Connecting To Weld Output TerminalsStop engine Damage your machineSelecting Weld Cable Sizes Remote Receptacle Information− Operating Welding Generator Front Panel ControlsInfrequently Description Of Engine Controls See SectionCold Weather Engine Operation LoadedControlling Engine Speed And Weld/Generator Output Wire Position Process SwitchProcess Switch Settings Stick PositionsLift-Arc t TIG Stick Start Procedure − Scratch Start TechniqueTIG Lift-ArcStart Procedure TIG Electrode WorkpieceConnect Remote Set Process Remote Voltage/Amperage ControlMin 20 a DC Stick Welding Only− Operating Auxiliary Equipment Hz Generator Power Receptacles And Supplementary ProtectorsControlling Engine Speed And Weld/Generator Power Output Extension cordRized Service Agent Variable Frequency Hz Generator Power Receptacle RC3Press button to reset. If supple Current Available in Amperes Receptacle100 − Maintenance & TroubleshootingRoutine Maintenance 200Maintenance Label Servicing Air Cleaner Servicing Optional Spark ArrestorChanging Engine Oil, Oil Filter, And Fuel Filter Overload Protection Open left side doorTrouble Remedy TroubleshootingWelding Check receptacle wiring and connections Hz Generator Power Receptacles RC1 And RC2Variable Frequency Generator Power Receptacle RC3 Necessary partsCheck engine charging system according to engine manual Engine starts but stops when EngineEngine Od of timeRecommended Spare Parts − Parts ListRecommended Spare Parts − Electrical Diagrams Circuit Diagram For Welding Generator Models232 961-A Grounding Generator To Truck Or Trailer Frame − Generator Power GuidelinesSelecting Equipment Electrically Bond GeneratorUse ground device as stated in electrical codes Grounding When Supplying Building SystemsHow Much Power Does Equipment Require? Amperes x Volts = WattsIndustrial Motors Rating Starting Watts Running Watts Approximate Power Requirements For Industrial MotorsApproximate Power Requirements For Farm/Home Equipment Farm/Home Equipment Rating Starting Watts Running WattsApproximate Power Requirements For Contractor Equipment Contractor Rating Starting Watts Running WattsSingle-Phase Induction Motor Starting Requirements Power Required To Start MotorHow Much Power Can Generator Supply? KVA/HP x HP x 1000 / Volts = Starting AmperageTypical Connections To Supply Standby Power Selecting Extension Cord Use Shortest Cord Possible SOCKET/WRENCH Selection Table Standard Metric Welding Symbols Page Page Support ServiceYour distributor also gives For assistance in filing or settling claims, contact To locate a Distributor or Service Agency visitMiller Electric Mfg. Co Your distributor and/or equipment manufacturer’s