Miller Electric Big Blue 400 KX Lift-ArcStart Procedure, Lift-Arc Start Method Touch, Application

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6-4. Lift-Arc™Start Procedure

Lift-Arc Start Method

1 2

	“Touch”	1 − 2
	“Touch”	Seconds
		Seconds

Do NOT Strike Like A Match!

Notes

Lift-Arc t TIG

With Lift-ArctTIG selected, start arc as follows:

1TIG Electrode

2Workpiece

Turn gas on. Touch tungsten electrode to workpiece at weld start point. Hold electrode to workpiece for 1-2 seconds, and slowly lift electrode. Arc is formed when electrode is lifted.

Normal open-circuit voltage is not present before tungsten electrode touches workpiece; only a low sensing voltage is present between electrode and workpiece. The solid-state output contactor does not energize until after electrode is touching workpiece. This allows electrode to touch workpiece without overheating, sticking, or be- ing contaminated.

Application:

Lift-Arc is used for the DCEN GTAW process when HF Start method is not permitted, or to replace the scratch method.

Work like a Pro!

Pros weld and cut safely. Read the safety rules at the beginning of this manual.

OM-4423 Page 27

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Contents Processes OM-4423 215 178NDescription File Engine DriveFrom Miller to You Table of Contents − Maintenance & Troubleshooting 8-1. Routine Maintenance Directives StandardsDecrot6/05 Decrotsound1/05 Sound Level InformationArc Welding Hazards Symbol UsageEngine Hazards Compressed Air Hazards California Proposition 65 Warnings Principal Safety StandardsEMF Information Radiation can cause interference− Consignes DE Sécurité − Lire Avant Utilisation Signification des symbolesUN Choc Électrique peut tuer LES Fumées ET LES GAZ peuvent être dangereuxDES Particules Volantes peuvent blesser les yeux LE Soudage peut provoquer un in- cendie ou une explosionDES Pièces Chaudes peuvent provoquer des brûlures graves LE Bruit peut affecter l’ouïe’EMPLOI Excessif peut ’AIR Comprimé peut provoquer des blessuresLE Surchauffement peut endom- mager le moteur électrique LES Étincelles Volantes risquent de provoquer des blessuresPour les moteurs à essence LE Soudage À L’ARC risque de provoquer des interférencesPour les moteurs diesel Boulevard, Rexdale, Ontario, Canada M9W 1R3 téléphone− Definitions − 50 h StdStd Manufacturer’s Rating Label Symbols And Definitions − Specifications Weld, Power, And Engine SpecificationsDimensions, Weights, And Operating Angles MIG Mode Stick ModeTIG Mode Volt-Ampere CurvesExceeding duty cycle can damage unit and void warranty Curve shows typical fuel use under weld or power loadsFuel Consumption Duty Cycle And OverheatingAc power curve shows the gen- erator power in amperes AC Generator Power CurveInstalling Welding Generator − InstallationMounting Welding Generator Installing Exhaust Pipe Tools Needed 1/2Stop engine and let cool Connecting The Battery Activating The Dry Charge Battery If ApplicableDo not overfill battery cells Connect Negative − Cable LastEngine Prestart Checks Coolant Recovery TankFuel Do not use gasoline. Gasoline will damage engine OilStick and TIG Welding Connecting To Weld Output TerminalsMIG and Fcaw Welding Stop engine150 ft 200 ft 250 ft Selecting Weld Cable Sizes350 ft 400 ft 45 m 60 m 70 m 90 m 105 m 120 m Stop engine beforeSocket Connecting To Remote 14 Receptacle RC14Stop Front Panel Controls See SectionDescription Of Front Panel Controls See Section Process/Contactor Switch Settings Process/Contactor Switch On CC/CV ModelsLift-Arc Start Method Touch Lift-ArcStart ProcedureDo not Strike Like a Match Lift-Arc t TIGRemote Voltage/Amperage Control Volt Receptacles − Operating Auxiliary EquipmentRoutine Maintenance − Maintenance & TroubleshootingMaintenance Label By the warranty Servicing Air CleanerTo clean air filter Do not clean housing with air hoseInspecting And Cleaning Spark Arrestor Muffler Stop engine and let cool. Reinstall cleanout plugServicing Engine Cooling System Maximum Adjusting Engine Speed On Standard ModelsStop engine and let cool After servicing, start engine Servicing Fuel And Lubrication SystemsTo change oil and filter To replace primary canister fuel filterOverload Protection Press button to reset breakerReplace Damaged Brushes Checking Generator BrushesVoltmeter/Ammeter Help Displays Help 20 DisplayHelp 25 Display Troubleshooting Standard Generator PowerWelding Engine Check for obstructed throttle solenoid Circuit Diagram For Welding Generator − Electrical Diagrams221 499-B − RUN-IN Procedure WetstackingWelding Generator Procedure at less than Run-In Procedure Using Load BankStop engine Do not touch hot exhaust From flammables Do not PerformBank/grid Run-In Procedure Using Resistance GridFrom flammables Do not perform run-in− Generator Power Guidelines Selecting EquipmentGrounding Generator To Truck Or Trailer Frame How Much Power Does Equipment Require? Grounding When Supplying Building SystemsEarth ground if supplying Amperes x Volts = WattsApproximate Power Requirements For Farm/Home Equipment Approximate Power Requirements For Industrial MotorsIndustrial Motors Rating Starting Watts Running Watts Farm/Home Equipment Rating Starting Watts Running WattsContractor Rating Starting Watts Running Watts Approximate Power Requirements For Contractor EquipmentHow Much Power Can Generator Supply? Power Required To Start MotorSingle-Phase Induction Motor Starting Requirements KVA/HP x HP x 1000 = Starting AmperageTypical Connections To Supply Standby Power Current Load Watts Amperes Selecting Extension Cord Use Shortest Cord Possible103 − −5 104 − −3 96− −2 102 101 100 − Parts List3031 5756 71− −4Dia Part Description Quantity Mkgs Dia Part Description Quantity 213600 Panel, Front w/Components -1Item Panel, Front w/ComponentsFUEL/HM Control Panel Generator -1Item GeneratorRectifier Assembly Wiring Harnesses Service Your distributor also givesSupport Miller Electric Mfg. Co To locate a Distributor or Service Agency visitFor assistance in filing or settling claims, contact Your distributor and/or equipment manufacturer’s