Miller Electric Miller DU-OP manual Welder a Left Side, Do not exceed machine duty cycle

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5-8. Making Dual Operator CC Weld Connections w/ Separate Work Cables

Tools Needed:

3/4 in

Direct Current Electrode Positive (DCEP) connections are shown.

Welder A (Left) Side

Welder B (Right) Side

Note position

of Process

Selector switches.

2	1	2
	1

3

				Ref. 190 377 / 802 292-A
	Y Stop engine.	2	Electrode Holder Cables	CC terminals and electrode holder cables
	Y Do not exceed machine duty cycle.	3	Work Cables	to Negative (−) terminals.
				If unit has the Polarity switch option, con-
	. Use Dual Operator mode for CC and	For Stick/TIG welding Direct Current Elec-
				nect work cables to Work receptacles and
	CV welding (see Section 6-1).	trode Positive (DCEP), connect work
				electrode holder cables to Electrode recep-
		cables to Negative (−) terminals and elec-
	See Section 5-15for proper cable size.			tacles.
		trode holder cables to CC terminals.
	1 Strain Reliefs			. Be sure Process Selector switches are
		For Stick/TIG Direct Current Electrode
	Route cables through strain reliefs.	Negative (DCEN), connect work cables to		set correctly. See Section 6-3.

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Contents File Engine Drive ProcessesDescription Visit our website at OM-494191 862Q SeptemberFrom Miller to You Table of Contents − Operating Auxiliary Equipment 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 téléphoneSymbols And Definitions − DefinitionsDimensions, Weights, And Operating Angles − SpecificationsWeld, Power, And Engine Specifications DescriptionAC Generator Power Fuel ConsumptionOverheating Exceeding duty cycle can damage unit and void warrantyDuty Cycle And Overheating Reduce Duty Cycle MinutesCV/DC Mode CC/DC − Single ModeCC/DC − Dual Mode Volt-Ampere Curves− Installation Installing Welding GeneratorDo not overfill battery cells Activating The Dry Charge Battery If ApplicableConnecting The Battery For 30 MinutesStop engine and let cool Installing Exhaust PipeEngine Prestart Checks FuelUnexpected Weld Output can cause injury or fire Safety Information For Connecting To Weld Output TerminalsWeld Output Terminals Welder a Left Side Welder B Right SideWelder a Left Side Do not exceed machine duty cycleStop engine Do not exceed machine duty cycle Connect electrode holder cables to Elec- trode receptaclesWhen switch is in Straight position Place optional Polarity switches in ReVerse position when using CV weld re Switches are set correctly. See SectionConnect wire feeder cables to Negative − terminals Connect wire feeder cables to CV recep- taclesBe sure Process Selector switches are Place optional Polarity switch in Re Making Single Operator CC Weld Connections OM-494 350 ft 400 ft 45 m 60 m 70 m 90 m 105 m 120 m Selecting Weld Cable Sizes150 ft 200 ft 250 ft Put terminalsRemote 14 Receptacle Information Installing Ether Cylinder Optional Ether Starting AidAfter installing cylinder, wait at Socket InformationRemote 14 Receptacle Connections Dual Operator OperationSee -3for weld control descriptions − Operating the Welding GeneratorEngine Controls If light goes on, stop engine and check engine beltWeld Controls See Section Weld Control Descriptions See Section Do not switch under load or with out- put onDo not switch under load CV weld output for MIG is only availableVolt And 240 Volt Duplex Receptacles Generator power is not affected by weld output− Operating Auxiliary Equipment At 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 hoseServicing Fuel And Lubrication Systems Servicing Optional Ether Starting Aid Adjusting Engine SpeedWeld/Power CylinderMax Tools Needed 11/16 To adjust belt tensionChecking And Replacing Alternator Belt Stop engine To check belt tensionResetting Fan Belt Safety Shutdown Stop engine and let cool. Reinstall cleanout plug Inspecting And Cleaning Optional Spark Arrestor MufflerChecking Generator Brushes Circuit Protection Thermostats TP3 And TP4 Internal − Not ShownTroubleshooting WeldingRepair or replace wire feeder Factory Authorized Service Agent check main rectifier SR2Factory Authorized Service Agent check main rectifier SR3 Formers T5 thru T10, and control board PC1 or PC5Generator Power EngineOM-494 − Electrical Diagrams Circuit Diagram For Welding Generator210 657-A Wetstacking − RUN-IN ProcedureMent damage may occur Check oil level frequently dur Run-In Procedure Using Load Bank4exceed duty cycle or equip- ment damage may occur Ing run-in add oil if neededBank/grid Run-In Procedure Using Resistance GridProcedure at less than From flammablesSelecting 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 96−SEE FIG 92 91 103 102 101 100 25−SEE FIG 9104748 57−SEE FIG 78−SEE FIG 76 75 Item Dia Part Description Quantity Mkgs 189 Front Panel Front Panel -1Item Side Control Panels − Welder B Right Side Shown Side Control Panels -1Item Side Control Panels Generator Rectifier Assembly OM-494 Page Your distributor also gives ServiceSupport 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