Miller Electric 280 NT Process Switch Settings, Wire Position, Stick Positions, TIG Position

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

6-5. Process Switch

1

1 Process Switch

! Weld output terminals are energized when Process switch is in an Elec- trode Hot position and the engine is running.

.The unit will not return to idle speed

when Process switch is in a Wire or TIG position and the remote contactor is on (closure between pins A and B on re- mote receptacle).

Use switch to select weld process (see table below and Section 5-7).

Wire Position:

Use Wire position for MIG welding using a voltage sensing wire feeder.

Stick Positions:

Use Stick positions for stick (SMAW) and air carbon arc (CAC-A) cutting and gouging.

When switch is in a Stick mode, select one of four dig settings to provide additional am- perage during short arc length conditions and help prevent electrodes from “sticking”. See Stick position descriptions following (reading L to R):

Soft Arc (E 7018) (Position 1) - This setting provides a low dig/arc force setting for smooth weld performance. A stable weld puddle with little arc “snap” gives excellent weld bead appearance with minimal spatter.

Medium Soft Arc (Position 2) - This setting provides a low to medium dig/arc force that gives a slightly more fluid weld puddle, more arc “snap”, and reduces the potential for electrode sticking at shorter arc lengths.

Medium Stiff Arc (Position 3) - This setting provides medium dig/arc force for open root vertical up joints or joints that do not require additional current for fit up inconsistencies.

Stiff Arc (E6010) (Position 4) - This setting provides a high dig/arc force for open root vertical down joints where additional current is needed to compensate for tight joint fit up without the need to increase overall welding current. This setting is rec- ommended for those who prefer a very stiff arc with 6010 electrodes.

The dig circuit is disabled when switch is in Wire or TIG positions.

TIG Position:

Electrode Hot − Lift-Arc™/Scratch Start TIG (Provides great DC starts with either start- ing method) - With switch in this position, normal open-circuit voltage is not present between the electrode and workpiece. A solid-state contactor energizes after the electrode touches the workpiece, preventing overheating, sticking, or con- tamination of the electrode (see Sections 6-6and 6-7).

 

 

 

Ref 216 172-D / 803 984

 

 

 

 

 

 

 

 

 

Process Switch Settings

 

 

 

 

 

Switch Setting

Process

 

Output On/Off Control

 

 

 

 

Electrode Hot − Wire

MIG (GMAW)

 

Electrode Hot

 

 

 

 

Electrode Hot − Stick

Stick (SMAW),

 

Electrode Hot

Air Carbon Arc (CAC-A) Cutting And Gouging

 

 

 

 

 

 

 

 

Electrode Hot − Scratch

Scratch Start TIG (GTAW)

 

Electrode Hot

Start TIG

 

 

 

 

 

 

 

 

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Contents File Engine Drive OM-4430217 243RProcesses DescriptionFrom Miller to You Table of Contents − Maintenance & Troubleshooting HOT Parts can cause severe burns Symbol UsageArc Welding Hazards Electric Shock can killWelding can cause fire or explosion Fumes and Gases can be hazardousBuildup of GAS can injure or kill ARC Rays can burn eyes and skinCompressed Air Hazards Engine HazardsFalling Unit can cause injury Welding Wire can cause injuryHOT Parts can cause burns and injury Fire or Explosion hazardRadiation can cause interference Principal Safety StandardsCalifornia Proposition 65 Warnings EMF InformationIndique des instructions spécifiques Signification des symboles− Consignes DE Sécurité − Lire Avant Utilisation UN Choc Électrique peut tuerLES Fumées ET LES GAZ peuvent être dangereux DES Pièces Chaudes peuvent provoquer des brûlures gravesLE Soudage peut provoquer un in cendie ou une explosion ’EXPLOSION DE LA Batterie peu LE Bruit peut affecter l’ouïeDES Organes Mobiles peuvent pro voquer des blessures ’AIR Comprimé peut provoquer des blessures LA Chaleur DU Moteur peut pro- voquer un incendieRisque D’INCENDIE OU D’EXPLO- Sion ’EMPLOI Excessif peut LE Surchauffement peut endom- mager le moteur électriqueDES Organes Mobiles peuvent provoquer des blessures LES Fils DE Soudage peuvent provoquer des blessuresEn ce qui concerne les implants médicaux Proposition californienne 65 AvertissementsPrincipales normes de sécurité Information EMF− Definitions Symbol DefinitionsDescription − SpecificationsWeld, Power, And Engine Specifications Dimensions, Weights, and Operating Angles1800 RPM Dimensions For Units With Optional Running GearFuel Consumption While Welding And Using Generator Power RPM WeldAC Amperes Generator Power CurveDuty Cycle TIG Mode Volt-Ampere Curves100% Duty Cycle at 280 Amperes DC/CC CC/DC Stick Mode Stick And MIG Mode Volt-Ampere CurvesCV/DC MIG Mode Installing Welding Generator − InstallationOil Engine Prestart ChecksConnect negative − cable last Connecting Or Replacing The BatteryReplacing The Battery + −Tools Needed 1/2 Installing Exhaust PipeStop engine and let cool Damage your machine Connecting To Weld Output TerminalsStop engine Failure to properly connectRemote Receptacle Information Selecting Weld Cable SizesFront Panel Controls − Operating Welding GeneratorLoaded Description Of Engine Controls See SectionCold Weather Engine Operation InfrequentlyControlling Engine Speed And Weld/Generator Output Stick Positions Process SwitchProcess Switch Settings Wire PositionTIG Electrode Workpiece Stick Start Procedure − Scratch Start TechniqueTIG Lift-ArcStart Procedure Lift-Arc t TIGStick Welding Only Remote Voltage/Amperage ControlMin 20 a DC Connect Remote Set ProcessExtension cord Hz Generator Power Receptacles And Supplementary ProtectorsControlling Engine Speed And Weld/Generator Power Output − Operating Auxiliary EquipmentPress button to reset. If supple Variable Frequency Hz Generator Power Receptacle RC3Rized Service Agent Receptacle Current Available in Amperes200 − Maintenance & TroubleshootingRoutine Maintenance 100Maintenance Label Servicing Optional Spark Arrestor Servicing Air CleanerChanging Engine Oil, Oil Filter, And Fuel Filter Open left side door Overload ProtectionWelding TroubleshootingTrouble Remedy Necessary parts Hz Generator Power Receptacles RC1 And RC2Variable Frequency Generator Power Receptacle RC3 Check receptacle wiring and connectionsOd of time Engine starts but stops when EngineEngine Check engine charging system according to engine manualRecommended Spare Parts − Parts ListRecommended Spare Parts Circuit Diagram For Welding Generator Models − Electrical Diagrams232 961-A Electrically Bond Generator − Generator Power GuidelinesSelecting Equipment Grounding Generator To Truck Or Trailer FrameAmperes x Volts = Watts Grounding When Supplying Building SystemsHow Much Power Does Equipment Require? Use ground device as stated in electrical codesFarm/Home Equipment Rating Starting Watts Running Watts Approximate Power Requirements For Industrial MotorsApproximate Power Requirements For Farm/Home Equipment Industrial Motors Rating Starting Watts Running WattsContractor Rating Starting Watts Running Watts Approximate Power Requirements For Contractor EquipmentKVA/HP x HP x 1000 / Volts = Starting Amperage Power Required To Start MotorHow Much Power Can Generator Supply? Single-Phase Induction Motor Starting RequirementsTypical Connections To Supply Standby Power Selecting Extension Cord Use Shortest Cord Possible SOCKET/WRENCH Selection Table Standard Metric Welding Symbols Page Page Your distributor also gives ServiceSupport Your distributor and/or equipment manufacturer’s To locate a Distributor or Service Agency visitMiller Electric Mfg. Co For assistance in filing or settling claims, contact
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