Manuals / Miller Electric / Power Tools / Welding System

Miller Electric 280 NT manual Each 120 V Duplex, Receptacle, Current Available in Amperes

Models: 280 NT

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. A complete Parts List is available at www.MillerWelds.com

7-3. Wiring Instructions For Optional 240 Volt, Single-Phase Plug (NEMA 14-50P)

Current Available in Amperes

240 V		Each 120 V Duplex
Receptacle*		Receptacle

20		0
15		5
10		10
5		15
0		20
0		20

V x A = Watts

*One 240 V load or two 120 V loads.

		The plug can be wired for a 240 V,
		2-wire load or a 120/240V, 3-wire
		load. See circuit diagram.
		1 Plug Wired for 120/240 V,
7			3-Wire Load
		When wired for 120 V loads, each
		duplex receptacle shares a load
		with one half of 240 V receptacle.
		2 Plug Wired for 240 V, 2-Wire
	3	1	Load
		1
		3	Neutral (Silver) Terminal
		3	Neutral (Silver) Terminal
4		4	Load 1 (Brass)Terminal
		5 Load 2 (Brass) Terminal
		6	Ground (Green) Terminal
		7	Amperes Available using
120V			120/240 V Plug
120V		5
120V		5
120V
240V		6	Tools Needed:
		6

		2
		3
	4

240V

6 5

	240 V AC
120 V AC	120 V AC

plug1 11/03 − 120 813-D

OM-4430 Page 32

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Miller Electric 280 NT manual Each 120 V Duplex, Receptacle, Current Available in Amperes

Contents

Miller LegendR302 OM-4430217 243RProcesses DescriptionFrom Miller to You TABLE OF CONTENTS SECTION 1 − SAFETY PRECAUTIONS − READ BEFORE USINGSECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE AVANT UTILISATION TABLE OF CONTENTS SECTION 11 − GENERATOR POWER GUIDELINESOPTIONS AND ACCESSORIES WARRANTY1-1. Symbol Usage 1-2. Arc Welding HazardsSECTION 1 − SAFETY PRECAUTIONS − READ BEFORE USING NOTICE − Indicates statements not related to personal injuryFUMES AND GASES can be hazardous BUILDUP OF GAS can injure or killARC RAYS can burn eyes and skin WELDING can cause fire or explosion1-3. Engine Hazards 1-4. Compressed Air HazardsBATTERY ACID can BURN SKIN and EYES TRAPPED AIR PRESSURE AND WHIPPING HOSES can cause injury1-5. Additional Symbols For Installation, Operation, And Maintenance 1-7. Principal Safety Standards 1-6. California Proposition 65 Warnings1-8. EMF Information For Gasoline Engines2-1. Signification des symboles SECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE AVANT UTILISATION2-2. Dangers relatifs au soudage à l’arc 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 2-6. Proposition californienne 65 Avertissements 2-7. Principales normes de sécurité2-8. Information EMF Pour les moteurs à essence3-1. Symbol Definitions SECTION 3 − DEFINITIONSWork like a Pro SECTION 4 − SPECIFICATIONS 4-2. Weld, Power, And Engine Specifications4-3. Dimensions, Weights, and Operating Angles 4-1. Description4-4. Dimensions For Units With Optional Running Gear 4-5. Fuel Consumption While Welding And Using Generator Power4-6. Generator Power Curve WELD POSITION FLATHORIZONTAL VERTICAL4-7. Duty Cycle 4-8. TIG Mode Volt-Ampere CurvesContinuous Welding 4-9. Stick And MIG Mode Volt-Ampere Curves A. CC/DC Stick ModeB. CV/DC MIG Mode SECTION 5 − INSTALLATION 5-1. Installing Welding Generatorvehicle frame. Always connect a ground wire Movement Do not lift unit from end5-2. Engine Prestart Checks Follow run-in procedure in engineKeep battery in good condition Store battery in warm area5-3. Connecting Or Replacing The Battery Replacing The BatteryRemove end panel to replace battery Connect negative − cable last5-4. Installing Exhaust Pipe Work like a ProStop engine and let cool 5-5. Connecting To Weld Output Terminals Stop engineFailure to properly connect damage your machine5-6. Selecting Weld Cable Sizes 5-7. Remote Receptacle InformationSECTION 6 − OPERATING WELDING GENERATOR 6-1. Front Panel ControlsFor maximum weld output above 6-2. Description Of Engine Controls See Section 6-3. Cold Weather Engine OperationEngine Control Switch Generator power is available at recep6-4. Controlling Engine Speed And Weld/Generator Output Generator Power OutputEngine Controls Either Run/Idle position6-5. Process Switch Wire PositionThe unit will not return to idle speed Stick Positions6-6. Stick Start Procedure − Scratch Start Technique 6-7. TIG Lift-Arc Start ProcedureLift-Arc t TIG Application6-8. Remote Voltage/Amperage Control Max 160 A DC7-1. 60 Hz Generator Power Receptacles And Supplementary Protectors SECTION 7 − OPERATING AUXILIARY EQUIPMENTGenerator power is available at weld load and generator power7-2. Variable Frequency Hz Generator Power Receptacle RC3 Press button to reset. If supplerized Service Agent Work like a ProEach 120 V Duplex ReceptacleCurrent Available in Amperes ReceptacleSECTION 8 − MAINTENANCE & TROUBLESHOOTING 8-1. Routine Maintenancefor important start-up, service, and storage information. Service engine more often if8-2. Maintenance Label OM-4430 Page8-4. Servicing Air Cleaner 8-3. Servicing Optional Spark ArrestorStop engine and let cool Stop engine8-5. Changing Engine Oil, Oil Filter, And Fuel Filter Stop engine and let coolStop engine, tighten connec- tions as necessary, and wipe up fuel 8-6. Overload Protection Stop engine803 773−A / Ref. 216 172-D 8-7. Troubleshooting A. WeldingTrouble RemedyTrouble RemedyTrouble RemedyD. Engine TroubleRemedy 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-ASECTION 11 − GENERATOR POWER GUIDELINES 11-1. Selecting Equipment11-2. Grounding Generator To Truck Or Trailer Frame Be sure equipment has double insulated symbol and/or word- ing on it11-3. Grounding When Supplying Building Systems 11-4. How Much Power Does Equipment Require?Use ground device as stated in electrical codes Amperes x Volts = Watts11-5. Approximate Power Requirements For Industrial Motors 11-6. Approximate Power Requirements For Farm/Home EquipmentIndustrial Motors Rating11-7. Approximate Power Requirements For Contractor Equipment ContractorRating Starting Watts11-8. Power Required To Start Motor 11-9. How Much Power Can Generator Supply?Single-Phase Induction Motor Starting Requirements Motor Start11-10. Typical Connections To Supply Standby Power Customer-supplied equipment11-11. Selecting Extension Cord Use Shortest Cord Possible Cord Lengths for 120 Volt LoadsMaximum Allowable Cord Length in ft m for Conductor Size AWG CurrentSOCKET/WRENCH SELECTION TABLE SOCKET/WRENCH SELECTION TABLEU.S. STANDARD METRICWelding Symbols Ref. AWS/ANSI A2.4Page Page Warranty Questions? ServiceCall 1-800-4-A-MILLER for your local Miller distributor SupportFor Service Owner’s RecordContact a DISTRIBUTOR or SERVICE AGENCY near you Please complete and retain with your personal records

Current Available in Amperes

Each 120 V Duplex

Receptacle*

Receptacle