Miller Electric Big Blue 400 PX manual Overload Protection

Page 45

8-9. Overload Protection

3

! Stop engine.

. When a supplementary protec- tor, circuit breaker or fuse opens, it usually indicates a more serious problem exists. Contact Factory Authorized Service Agent.

	1	Fuse F1
	F1	protects the stator exciter wind-
	ing from overload. If F1 opens, weld
	and generator power is low or stops
	entirely.
	2 Circuit Breaker CB1 (Not
		Shown)
	3	Supplementary Protector CB2
	4	Supplementary Protector CB3
	5	Supplementary Protector CB8
	CB1 protects the engine battery cir-
	cuit. If CB1 opens, the engine will not
	crank. CB1 automatically resets
	when the fault is corrected.
	CB2 protects the engine wiring har-
	ness. If CB2 opens, the engine will
	not crank.
	CB3 protects part of the weld control
	wiring harness. If CB3 opens, weld
	and generator power output stops.
	CB8 protects the 24 volt ac output to
	remote receptacle RC14. If CB8
	opens, 24 volt output to RC14 stops.
	Press button to reset supplementary
1	protector.

4

5

Ref. 222 875-A / 803 566 / 804 068

OM-223 037 Page 39

Image 45

Contents Processes OM-223 037MDescription File Engine DriveFrom Miller to You Table of Contents Warranty Directives StandardsDecrot1/07 Decrotsound200710 Sound Level InformationArc Welding Hazards Symbol UsageElectric Shock can kill HOT Parts can cause severe burnsBuildup of GAS can injure or kill Fumes and Gases can be hazardousARC Rays can burn eyes and skin Welding can cause fire or explosionCompressed Air Hazards Engine HazardsHOT Parts can cause burns and injury Welding Wire can cause injuryFire or Explosion hazard Falling Unit can cause injuryCalifornia Proposition 65 Warnings Principal Safety StandardsEMF Information Radiation can cause interferenceSignification des symboles − Consignes DE Sécurité − Lire Avant UtilisationUN Choc Électrique peut tuer LES Fumées ET LES GAZ peuvent être dangereux DES Pièces Chaudes peuvent provoquer des brûlures gravesLE Soudage peut provoquer un in cendie ou une explosion LE Bruit peut affecter l’ouïeDES Organes Mobiles peuvent pro voquer des blessures ’EXPLOSION DE LA Batterie peuLA Chaleur DU Moteur peut pro- voquer un incendie ’AIR Comprimé peut provoquer des blessuresRisque D’INCENDIE OU D’EXPLO- Sion DES Organes Mobiles peuvent provoquer des blessures LE Surchauffement peut endom- mager le moteur électriqueLES Fils DE Soudage peuvent provoquer des blessures ’EMPLOI Excessif peutPrincipales normes de sécurité Proposition californienne 65 AvertissementsInformation EMF En ce qui concerne les implants médicaux− Definitions − 50 h StdStd Manufacturer’s Rating Label Symbols And Definitions Weld And Power Specifications − SpecificationsEngine Specifications Dimensions, Weights, And Operating AnglesMIG Mode Stick ModeTIG Mode Volt-Ampere Curves − 50 Hz OperationDC Amperes Volt-Ampere Curves − 60 Hz OperationFuel Consumption Curve shows typical fuel use under weld or power loadsDuty Cycle And Overheating − 50 Hz Operation 100% Duty Cycle At 250 AmperesAC Generator Power Curve Ac power curve shows the gen- erator power in amperesDuty Cycle And Overheating − 60 Hz Operation Installing Welding Generator − InstallationLocation/Airflow Clearance Grounding1Mounting Welding Generator Installing Exhaust Pipe Stop engine and let coolTools Needed Connecting The Battery Activating The Dry Charge Battery If ApplicableEngine Prestart Checks Coolant Recovery TankFuel OilConnecting To Weld Output Terminals Selecting Weld Cable Sizes Connecting To Remote 14 Receptacle RC14 Gas ConnectionsSocket Information Front Panel Controls See Section StopOM-223 Description Of Front Panel Controls See Section Process/Contactor Switch Settings Process/Contactor SwitchRemote Voltage/Amperage Control Set Wire ProcessConnect Remote Receptacle RC14Volt Receptacles − Operating Auxiliary EquipmentRoutine Maintenance − Maintenance & TroubleshootingMaintenance Label Perkins Customer Assistance ServiceChecking Generator Brushes Website AddressServicing Air Cleaner To clean air filterReinstall primary element and cap dust ejector down Servicing Engine Cooling System Inspecting And Cleaning Spark Arrestor MufflerTools Needed 3/8 Stop engine and let cool Radiator DraincockTo change oil and filter Servicing Fuel And Lubrication SystemsTo replace primary canister fuel filter To drain water from fuel systemOverload Protection Optional Voltmeter/Ammeter Help Displays Help 20 DisplayHelp 25 Display Troubleshooting Standard Generator PowerWelding Engine When the engine is restarted Coolant temperature is too high see SectionEngine suddenly stops Sphere oil refineriesCircuit Diagram For Welding Generator − Electrical Diagrams222 966--C − RUN-IN Procedure WetstackingWelding Generator From flammables Run-In Procedure Using Load BankRun-In Procedure Using Resistance Grid − Generator Power Guidelines Selecting EquipmentGrounding Generator To Truck Or Trailer Frame Grounding When Supplying Building Systems How Much Power Does Equipment Require?Amperes x Volts = Watts Approximate 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 / Volts = Starting AmperageTypical Connections To Supply Standby Power Selecting Extension Cord Use Shortest Cord Possible 110− −5 108 109− −3 101 105 104 107 106 102 103 100− −2 − Parts List12−4 5756 112 Dia Part Description Quantity Mkgs Dia Part Description Quantity 213668 Front w/Components PanelPanel Front w/Components Control Panel Generator Rectifier Assembly Wiring Harnesses Material Thickness Gauge Start Your Professional Welding Career Now Support Your distributor also givesMiller 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