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Miller Electric 280 NT manual Electrical Diagrams, 1. Circuit Diagram For Welding Generator Models

Models: 280 NT

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SECTION 10 − ELECTRICAL DIAGRAMS

Figure 10-1. Circuit Diagram For Welding Generator Models

OM-4430 Page 42

Page 46

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Miller Electric 280 NT manual Electrical Diagrams, 1. Circuit Diagram For Welding Generator Models

Contents

Processes Miller LegendR302OM-4430217 243R DescriptionFrom Miller to You SECTION 1 − SAFETY PRECAUTIONS − READ BEFORE USING TABLE OF CONTENTSSECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE AVANT UTILISATION OPTIONS AND ACCESSORIES TABLE OF CONTENTSSECTION 11 − GENERATOR POWER GUIDELINES WARRANTYSECTION 1 − SAFETY PRECAUTIONS − READ BEFORE USING 1-1. Symbol Usage1-2. Arc Welding Hazards NOTICE − Indicates statements not related to personal injuryARC RAYS can burn eyes and skin FUMES AND GASES can be hazardousBUILDUP OF GAS can injure or kill WELDING can cause fire or explosionBATTERY ACID can BURN SKIN and EYES 1-3. Engine Hazards1-4. Compressed Air Hazards TRAPPED AIR PRESSURE AND WHIPPING HOSES can cause injury1-5. Additional Symbols For Installation, Operation, And Maintenance 1-8. EMF Information 1-7. Principal Safety Standards1-6. California Proposition 65 Warnings For Gasoline Engines2-2. Dangers relatifs au soudage à l’arc 2-1. Signification des symbolesSECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE AVANT UTILISATION Indique des instructions spécifiquesDES PIÈCES CHAUDES peuvent provoquer des brûlures graves 2-3. Dangers existant en relation avec le moteur 2-4. Dangers liés à l’air comprimé D Affûter l’électrode au tungstène uniquement à la meuleuse dotée de protecteurs. Cette manœuv- re est à exécuter dans un endroit sûr lorsque l’on porte l’équipement homologué de protection du visage, des mains et du corps 2-8. Information EMF 2-6. Proposition californienne 65 Avertissements2-7. Principales normes de sécurité Pour les moteurs à essenceSECTION 3 − DEFINITIONS 3-1. Symbol DefinitionsWork like a Pro 4-3. Dimensions, Weights, and Operating Angles SECTION 4 − SPECIFICATIONS4-2. Weld, Power, And Engine Specifications 4-1. Description4-4. Dimensions For Units With Optional Running Gear 4-5. Fuel Consumption While Welding And Using Generator PowerHORIZONTAL 4-6. Generator Power CurveWELD POSITION FLAT VERTICAL4-8. TIG Mode Volt-Ampere Curves 4-7. Duty CycleContinuous Welding A. CC/DC Stick Mode 4-9. Stick And MIG Mode Volt-Ampere CurvesB. CV/DC MIG Mode vehicle frame. Always connect a ground wire SECTION 5 − INSTALLATION5-1. Installing Welding Generator Movement Do not lift unit from endKeep battery in good condition 5-2. Engine Prestart ChecksFollow run-in procedure in engine Store battery in warm areaRemove end panel to replace battery 5-3. Connecting Or Replacing The BatteryReplacing The Battery Connect negative − cable lastWork like a Pro 5-4. Installing Exhaust PipeStop engine and let cool Failure to properly connect 5-5. Connecting To Weld Output TerminalsStop engine damage your machine5-6. Selecting Weld Cable Sizes 5-7. Remote Receptacle Information6-1. Front Panel Controls SECTION 6 − OPERATING WELDING GENERATORFor maximum weld output above Engine Control Switch 6-2. Description Of Engine Controls See Section6-3. Cold Weather Engine Operation Generator power is available at recepEngine Controls 6-4. Controlling Engine Speed And Weld/Generator OutputGenerator Power Output Either Run/Idle positionThe unit will not return to idle speed 6-5. Process SwitchWire Position Stick PositionsLift-Arc t TIG 6-6. Stick Start Procedure − Scratch Start Technique6-7. TIG Lift-Arc Start Procedure Application6-8. Remote Voltage/Amperage Control Max 160 A DCGenerator power is available at 7-1. 60 Hz Generator Power Receptacles And Supplementary ProtectorsSECTION 7 − OPERATING AUXILIARY EQUIPMENT weld load and generator powerrized Service Agent 7-2. Variable Frequency Hz Generator Power Receptacle RC3Press button to reset. If supple Work like a ProCurrent Available in Amperes Each 120 V DuplexReceptacle Receptaclefor important start-up, service, and storage SECTION 8 − MAINTENANCE & TROUBLESHOOTING8-1. Routine Maintenance information. Service engine more often if8-2. Maintenance Label OM-4430 PageStop engine and let cool 8-4. Servicing Air Cleaner8-3. Servicing Optional Spark Arrestor Stop engineStop engine and let cool 8-5. Changing Engine Oil, Oil Filter, And Fuel FilterStop engine, tighten connec- tions as necessary, and wipe up fuel Stop engine 8-6. Overload Protection803 773−A / Ref. 216 172-D Trouble 8-7. TroubleshootingA. Welding RemedyTrouble TroubleRemedy RemedyTrouble D. EngineRemedy SECTION 9 − PARTS LIST 9-1. Recommended Spare PartsSECTION 10 − ELECTRICAL DIAGRAMS Figure 10-1. Circuit Diagram For Welding Generator ModelsOM-4430 Page 232 961-A11-2. Grounding Generator To Truck Or Trailer Frame SECTION 11 − GENERATOR POWER GUIDELINES11-1. Selecting Equipment Be sure equipment has double insulated symbol and/or word- ing on itUse ground device as stated in electrical codes 11-3. Grounding When Supplying Building Systems11-4. How Much Power Does Equipment Require? Amperes x Volts = WattsIndustrial Motors 11-5. Approximate Power Requirements For Industrial Motors11-6. Approximate Power Requirements For Farm/Home Equipment RatingRating 11-7. Approximate Power Requirements For Contractor EquipmentContractor Starting WattsSingle-Phase Induction Motor Starting Requirements 11-8. Power Required To Start Motor11-9. How Much Power Can Generator Supply? Motor Start11-10. Typical Connections To Supply Standby Power Customer-supplied equipmentMaximum Allowable Cord Length in ft m for Conductor Size AWG 11-11. Selecting Extension Cord Use Shortest Cord PossibleCord Lengths for 120 Volt Loads CurrentU.S. STANDARD SOCKET/WRENCH SELECTION TABLESOCKET/WRENCH SELECTION TABLE METRICWelding Symbols Ref. AWS/ANSI A2.4Page Page Call 1-800-4-A-MILLER for your local Miller distributor Warranty Questions?Service SupportContact a DISTRIBUTOR or SERVICE AGENCY near you For ServiceOwner’s Record Please complete and retain with your personal records