Miller Electric Big Blue 452P, Big Blue 302P manual Fuel Consumption, Duty Cycle And Overheating

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4-5. Fuel Consumption

The curve shows typical fuel use under weld or power loads.

	2.00
	1.75
GAL/HR.	1.50
GAL/HR.	1.00
	1.25
US	0.75
	0.75

0.50

0.25

0.00

0

IDLE

50

100

150

200

250

300

350

400

DC WELD AMPERES AT 100% DUTY CYCLE

			199 032
4-6. Duty Cycle And Overheating
100% Duty Cycle At 300 Amperes	Duty Cycle is percentage of 10 min-
	utes that unit can weld at rated load
	without overheating.
	Y Exceeding duty	cycle	can
	damage unit	and	void
	warranty.
Continuous Welding
WELD AMPERES
% DUTY CYCLE
			199 140

OM-496 Page 18

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Contents OM-496 ProcessesDescription From Miller to You Table of Contents 11-1 11-211-3 Directives StandardsDeccon1 11/02 Sound Level Information Deccon1 5/98Symbol Usage Arc Welding HazardsEngine Hazards Compressed Air Hazards Principal Safety Standards California Proposition 65 WarningsEMF Information Radiation can cause interferenceSignification des symboles − Consignes DE Sécurité − Lire Avant UtilisationUN Choc Électrique peut tuer LES Fumées ET LES GAZ peuvent être dangereuxLE Soudage peut provoquer un in- cendie ou une explosion DES Particules Volantes peuvent blesser les yeuxDES Pièces Chaudes peuvent provoquer des brûlures graves LE Bruit peut affecter l’ouïe’EXPLOSION DE LA Batterie peut DES Organes Mobiles peuvent provoquer des blessuresLA Chaleur DU Moteur peut pro- voquer un incendie ’AIR Comprimé peut provoque r des blessuresPrincipales normes de sécurité Information sur les champs électromagnétiques− Definitions + − Starting InstructionsAre possible hazards as Hot muffler and exhaust pipesCan cause severe burns. Do EngineReturn To Table Of Contents Manufacturer’s Rating Labels For CE Products − 50 h StdStd CC Models CC/CV ModelsSymbols And Definitions − Specifications Weld, Power, And Engine Specifications Dimensions, Weights, And Operating Angles Volt-Ampere Curves For CC Models Stick Mode MIG ModeTIG Mode Volt-Ampere Curves For CC/CV ModelsFuel Consumption Duty Cycle And OverheatingAC Generator Power Curve Optional Three-Phase Generator Curves12 kVA/kW Single-Phase AC Output No Weld Load 15 kVA/kW Three-Phase AC Output No Weld Load− Installation Installing Welding Generator See Sections 5-2AndLocation Grounding Airflow ClearanceUsing Lifting Eye Work like a ProMounting Welding Generator Supporting The UnitMounting Surface To Bolt Unit In PlaceInstalling Exhaust Pipe Stop engine and let coolActivating The Dry Charge Battery If Applicable When electrolyte is low, addRead and follow all instruc ChargerConnecting The Battery Reinstall cover after connecting batteryConnect Negative − Cable Last Coolant Recovery Tank Engine Prestart ChecksConnecting To Weld Output Terminals Selecting Weld Cable SizesRef 862-A / 048 720-K / 802 Connecting To Remote 14 Receptacle RC14 On CC/CV Models Socket− Operating Welding Generator − CC Models Front Panel Controls For CC Models See SectionTo Start Do not use ether. Using ether voids warranty Engine Indicator LightsDo not switch under load Engine Starting ControlsRemote Amperage Control On CC Models Optional Weld Control/Arc Condition Information LabelExample Combination Remote Amperage Control Stick Set weld controls as shown toReturn To Table Of Contents − Operating Welding Generator − CC/CV Models Front Panel Controls For CC/CV Models See SectionUse switch to select weld amperage range Voltage/Amperage Adjust Switch And Remote 14 ReceptacleProcess/Contactor Switch On CC/CV Models Process/Contactor Switch SettingsRemote Voltage/Amperage Control On CC/CV Models Optional Example Combination Remote Amperage Control TIG− Operating Auxiliary Equipment Volt And 240 Volt ReceptaclesAt least once a month, run en Open, contact Factory AuthoThree-Phase Power Connection Rear Of PanelClose panel opening if no connections are made to generator Optional Generator Power Receptacles 240 V 15 a AC South African Receptacle RC1Circuit Breaker CB2 Circuit Breaker CB3 − Maintenance & Troubleshooting Maintenance LabelsFor Non-CE Products Routine Maintenance Every 8 hEvery 50 h Every 100 hClean/Set Injectors Every 1000 hEvery 2000 h Change FuelServicing Air Cleaner By the warrantyTo clean air filter Do not clean housing with air hoseInspecting And Cleaning Optional Spark Arrestor Muffler Reinstall cleanout plug Tools NeededAdjusting Engine Speed On Standard Models MaximumDo not set engine speed higher than specified Close door Tools Needed 10 mmIdle Speed Adjustment Weld/Power Speed AdjustmentEngine Speed No Load Rpm max 61.6 Hz 1250 rpm 41.6 HzServicing Fuel And Lubrication Systems Overload Protection Diagnosing Causes Of Engine Fault Shutdowns Diagnostic Checks While RunningCorrect the cause of the shut Down before operatingTroubleshooting Welding − CC ModelsWelding − CC/CV Models Standard Generator Power Optional Three-Phase Generator Power CC/CV Models OnlyEngine Wiring harness and components Shutdown switch is released OutTemperature is too high see Sections 5-7and Air in fuel system. See engine manualReturn To Table Of Contents − Electrical Diagrams Circuit Diagram For CC Welding Generator215 296-B Circuit Diagram For CC/CV Welding Generator 215 297-B − RUN-IN Procedure WetstackingMent damage may occur Run-In Procedure Using Load Bank Procedure at less thanStop engine Do not touch hot exhaust From flammables Do not PerformRun-In Procedure Using Resistance Grid Bank/gridFrom flammables Do not perform run-in− Generator Power Guidelines Has this symbolSelecting Equipment Grounding Generator To Truck Or Trailer FrameGrounding When Supplying Building Systems How Much Power Does Equipment Require?Earth ground if supplying Use ground device as stated in electrical codesApproximate Power Requirements For Industrial Motors Approximate Power Requirements For Farm/Home EquipmentIndustrial Motors Rating Starting Watts Running Watts Farm/Home Equipment Rating Starting Watts Running WattsApproximate Power Requirements For Contractor Equipment Contractor Rating Starting Watts Running WattsPower Required To Start Motor How Much Power Can Generator Supply?Single-Phase Induction Motor Starting Requirements KVA/HP x HP xTypical Connections To Supply Standby Power Selecting Extension Cord Use Shortest Cord Possible Current Load Watts Amperes− Parts List 109 111 -4 or118 85 FigDia Part Mkgs Description Quantity 209 Figures 13-2 Control Box Assembly − CC Models PLG3 Control Box Assembly − CC/CV Models PC7 195 Panel, Front w/Components − CC Models RC13 032 Panel, Front w/Components − CC/CV Models 41 40Panel, Front w/Components − CC/CV Models -1Item PC4, PC5 189 Generator Generator -1Item602 SCREW, .312−18x .75 hexwhd.66d stl pld slffmg tap−rw 601 Main Rectifier Assembly Page Page Service Your distributor also givesSupport Miller Electric Mfg. Co For assistance in filing or settling claims, contactYour distributor and/or equipment manufacturer’s Transportation Department