Lift-ArcStart Procedure, Lift-Arc t TIG

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-Arct TIG 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-4433 Page 27

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Miller Electric 300 P Lift-ArcStart Procedure, Lift-Arc Start Method Touch, Do not Strike Like a Match, Lift-Arc t TIG

Contents

File Engine Drive OM-4433218 314KProcesses Description From Miller to You Table of Contents Warranty Arc Welding Hazards Symbol Usage Engine Hazards Compressed Air Hazards Radiation can cause interference Principal Safety StandardsCalifornia Proposition 65 Warnings EMF Information LES Fumées ET LES GAZ peuvent être dangereux Signification des symboles− Consignes DE Sécurité − Lire Avant Utilisation UN Choc Électrique peut tuer LE Bruit peut affecter l’ouïe LE Soudage peut provoquer un in- cendie ou une explosionDES Particules Volantes peuvent blesser les yeux DES Pièces Chaudes peuvent provoquer des brûlures graves LE Surchauffement peut endom- mager le moteur électrique LA Chaleur DU Moteur peut pro- voquer un incendie’AIR Comprimé peut provoquer des blessures ’EMPLOI Excessif peut Boulevard, Rexdale, Ontario, Canada M9W 1R3 téléphone LE Soudage À L’ARC risque de provoquer des interférencesPour les moteurs à essence Pour les moteurs diesel − 50 h Std − DefinitionsStd Manufacturer’s Rating Label Symbols And Definitions Weld, Power, And Engine Specifications − SpecificationsDimensions, Weights, And Operating Angles Volt-Ampere Curves Stick ModeMIG Mode TIG Mode Duty Cycle And Overheating Curve shows typical fuel use under weld or power loadsExceeding duty cycle can damage unit and void warranty Fuel Consumption 150 125 100 AC Generator Power Curve Grounding − InstallationInstalling Welding Generator See -2for lifting eye rating See -2for mounting information Mounting Welding Generator Point exhaust pipe in desired di Installing Exhaust PipeTools Needed 1/2 Stop engine and let cool Close door after connecting battery Activating The Dry Charge Battery If ApplicableConnecting The Battery Do not overfill battery cells Oil Coolant Recovery TankEngine Prestart Checks Fuel Do not use gasoline. Gasoline will damage engine Stop engine Connecting To Weld Output TerminalsStick and TIG Welding MIG and Fcaw Welding Stop engine before Selecting Weld Cable Sizes150 ft 200 ft 250 ft 350 ft 400 ft 45 m 60 m 70 m 90 m 105 m 120 m Socket Information Connecting To Remote 14 Receptacle RC14 Front Panel Controls See Section − Operating Welding Generator Description Of Front Panel Controls See Section Process/Contactor Switch Settings Process/Contactor Switch Lift-Arc t TIG Lift-ArcStart ProcedureLift-Arc Start Method Touch Do not Strike Like a Match Remote Voltage/Amperage Control − Operating Auxiliary Equipment Generator Power ReceptaclesAt least once a month, run engine at Routine Maintenance − Maintenance & Troubleshooting Maintenance Label Do not clean housing with air hose Servicing Air CleanerBy the warranty To clean air filter Stop engine and let cool. Reinstall cleanout plug Inspecting And Cleaning Optional Spark Arrestor MufflerServicing Engine Cooling System Stop engine. Close door Adjusting Engine Speed On Standard ModelsMaximum Do not set engine speed higher Rpm max 62.6 Hz 1250 rpm 41.6 Hz Engine Speed AdjustmentWeld/Power Speed Adjust- ment Engine Speed No Load To drain water from fuel system Servicing Fuel And Lubrication SystemsTo change oil and filter To replace primary canister fuel filter Overload Protection Replace Damaged Brushes Checking Generator Brushes Help 20 Display Voltmeter/Ammeter Help DisplaysHelp 25 Display Welding Troubleshooting Engine Generator Power Check for obstructed throttle solenoid Material Thickness Reference Chart Circuit Diagram For Welding Generator − Electrical Diagrams 219 228−D Wetstacking − RUN-IN ProcedureWelding Generator From flammables Do not Perform Run-In Procedure Using Load BankProcedure at less than Stop engine Do not touch hot exhaust Do not perform run-in Run-In Procedure Using Resistance GridBank/grid From flammables Grounding Generator To Truck Or Trailer Frame − Generator Power GuidelinesHas this symbol Selecting Equipment Use ground device as stated Electrical codes Grounding When Supplying Building SystemsHow Much Power Does Equipment Require? Earth ground if supplying Farm/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 Watts Contractor Rating Starting Watts Running Watts Approximate Power Requirements For Contractor Equipment KVA/HP x HP x 1000 = Starting Amperage Power Required To Start MotorHow Much Power Can Generator Supply? Single-Phase Induction Motor Starting Requirements Typical Connections To Supply Standby Power Current Load Watts Amperes Selecting Extension Cord Use Shortest Cord Possible 109 − Parts List108 -2 107 101 102 103 100 104 106 105 81 Fig 7372 71 67 66 65 PC3 Dia Part Description Quantity Mkgs Batt Panel, Front w/Components -1Item Panel, Front w/Components FUEL/HM Control Panel Generator Rectifier Assembly Wiring Harnesses 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

Miller Electric 300 P manual Lift-ArcStart Procedure, Lift-Arc Start Method Touch, Lift-Arc t TIG

Models: 300 P