Miller Electric 300 P manual Process/Contactor Switch Settings

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6-3. Process/Contactor Switch

11 Process/Contactor Switch

Y Weld output terminals are ener- gized when Process/Contactor switch is in a Weld Terminals Al- ways On position and the engine is running.

Use switch to select weld process and weld output on/off control (see table be- low).

Place switch in Remote On/Off Switch Required positions to turn weld output on and off with a device connected to the Remote 14 receptacle.

Place switch in Weld Terminals Always On positions for weld output to be on whenever the engine is running.

Use Stick mode for air carbon arc (CAC-A) cutting and gouging.

When switch is in Stick mode, select one of four arc drive (dig) settings to provide additional amperage during low voltage (short arc length) conditions and prevent “sticking” electrodes. Turn control from A to D to increase arc drive (dig) from min to max.

Use the Lift-Arc TIG mode for TIG (GTAW) welding using the Lift-Arc TIG starting procedure (see Section 6-4).

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		Process/Contactor Switch Settings

	Switch Setting	Process	Output On/Off Control	Engine Auto Idle (Optional)

	Remote On/Off Switch Re-	GTAW With HF Unit, Pulsing
	quired −TIG HF Required Or	GTAW With HF Unit, Pulsing	At Remote 14 Receptacle	Active
	quired −TIG HF Required Or	Device, Or Remote Control	At Remote 14 Receptacle	Active
	Scratch Start	Device, Or Remote Control
	Scratch Start

	Remote On/Off Switch	Stick (SMAW) With Remote On/Off	At Remote 14 Receptacle	Active
	Required − Stick	Stick (SMAW) With Remote On/Off	At Remote 14 Receptacle	Active
	Required − Stick

	Remote On/Off Switch	MIG (GMAW)
	Required − CV Feeder	MIG (GMAW)	At Remote 14 Receptacle	Active
	Required − CV Feeder	w/Constant Speed Feeder	At Remote 14 Receptacle	Active
	Using Remote	w/Constant Speed Feeder
	Using Remote

	Weld Terminals Always On −	MIG (GMAW)	Electrode Hot	Active
	Wire	w/Voltage Sensing Feeder	Electrode Hot	Active
	Wire	w/Voltage Sensing Feeder

	Weld Terminals Always On −	Stick (SMAW),
	Weld Terminals Always On −	Air Carbon Arc (CAC-A) Cutting	Electrode Hot	Active
	Stick	Air Carbon Arc (CAC-A) Cutting	Electrode Hot	Active
	Stick	And Gouging
		And Gouging

	Weld Terminals Always On −	TIG Lift-Arc (GTAW)	Electrode Hot	Active
	TIG Lift-Arc	TIG Lift-Arc (GTAW)	Electrode Hot	Active
	TIG Lift-Arc

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Contents Description OM-4433218 314KProcesses File Engine DriveFrom Miller to You Table of Contents Warranty Symbol Usage Arc Welding HazardsEngine Hazards Compressed Air Hazards EMF Information Principal Safety StandardsCalifornia Proposition 65 Warnings Radiation can cause interferenceUN Choc Électrique peut tuer Signification des symboles− Consignes DE Sécurité − Lire Avant Utilisation LES Fumées ET LES GAZ peuvent être dangereuxDES Pièces Chaudes peuvent provoquer des brûlures graves LE Soudage peut provoquer un in- cendie ou une explosionDES Particules Volantes peuvent blesser les yeux LE Bruit peut affecter l’ouïe’EMPLOI Excessif peut LA Chaleur DU Moteur peut pro- voquer un incendie’AIR Comprimé peut provoquer des blessures LE Surchauffement peut endom- mager le moteur électriquePour les moteurs diesel LE Soudage À L’ARC risque de provoquer des interférencesPour les moteurs à essence 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 TIG Mode Stick ModeMIG Mode Volt-Ampere CurvesFuel Consumption Curve shows typical fuel use under weld or power loadsExceeding duty cycle can damage unit and void warranty Duty Cycle And OverheatingAC Generator Power Curve 150 125 100See -2for lifting eye rating See -2for mounting information − InstallationInstalling Welding Generator GroundingMounting Welding Generator Stop engine and let cool Installing Exhaust PipeTools Needed 1/2 Point exhaust pipe in desired diDo not overfill battery cells Activating The Dry Charge Battery If ApplicableConnecting The Battery Close door after connecting batteryFuel Do not use gasoline. Gasoline will damage engine Coolant Recovery TankEngine Prestart Checks OilMIG and Fcaw Welding Connecting To Weld Output TerminalsStick and TIG Welding Stop engine350 ft 400 ft 45 m 60 m 70 m 90 m 105 m 120 m Selecting Weld Cable Sizes150 ft 200 ft 250 ft Stop engine beforeConnecting To Remote 14 Receptacle RC14 Socket Information− Operating Welding Generator Front Panel Controls See SectionDescription Of Front Panel Controls See Section Process/Contactor Switch Process/Contactor Switch SettingsDo not Strike Like a Match Lift-ArcStart ProcedureLift-Arc Start Method Touch Lift-Arc t TIGRemote Voltage/Amperage Control Generator Power Receptacles − Operating Auxiliary EquipmentAt least once a month, run engine at − Maintenance & Troubleshooting Routine MaintenanceMaintenance Label To clean air filter Servicing Air CleanerBy the warranty Do not clean housing with air hoseInspecting And Cleaning Optional Spark Arrestor Muffler Stop engine and let cool. Reinstall cleanout plugServicing Engine Cooling System Do not set engine speed higher Adjusting Engine Speed On Standard ModelsMaximum Stop engine. Close doorEngine Speed No Load Engine Speed AdjustmentWeld/Power Speed Adjust- ment Rpm max 62.6 Hz 1250 rpm 41.6 HzTo replace primary canister fuel filter Servicing Fuel And Lubrication SystemsTo change oil and filter To drain water from fuel systemOverload Protection Checking Generator Brushes Replace Damaged BrushesVoltmeter/Ammeter Help Displays Help 20 DisplayHelp 25 Display Troubleshooting WeldingGenerator Power EngineCheck for obstructed throttle solenoid Material Thickness Reference Chart − Electrical Diagrams Circuit Diagram For Welding Generator219 228−D − RUN-IN Procedure WetstackingWelding Generator Stop engine Do not touch hot exhaust Run-In Procedure Using Load BankProcedure at less than From flammables Do not PerformFrom flammables Run-In Procedure Using Resistance GridBank/grid Do not perform run-inSelecting Equipment − Generator Power GuidelinesHas this symbol Grounding Generator To Truck Or Trailer FrameEarth ground if supplying Grounding When Supplying Building SystemsHow Much Power Does Equipment Require? Use ground device as stated Electrical codesIndustrial Motors Rating Starting Watts Running Watts Approximate Power Requirements For Industrial MotorsApproximate Power Requirements For Farm/Home Equipment Farm/Home Equipment Rating Starting Watts Running WattsApproximate Power Requirements For Contractor Equipment Contractor Rating Starting Watts Running WattsSingle-Phase Induction Motor Starting Requirements Power Required To Start MotorHow Much Power Can Generator Supply? KVA/HP x HP x 1000 = Starting AmperageTypical Connections To Supply Standby Power Selecting Extension Cord Use Shortest Cord Possible Current Load Watts Amperes− Parts List 109108 -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 Panel, Front w/Components -1ItemFUEL/HM Control Panel Generator Rectifier Assembly Wiring Harnesses Service Your distributor also givesSupport For assistance in filing or settling claims, contact To locate a Distributor or Service Agency visitMiller Electric Mfg. Co Your distributor and/or equipment manufacturer’s