Overload Protection | Miller Electric Big Blue 400 KX specification

8-8. Overload Protection

1

3

4

5

YStop engine.

.When a 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.

2Circuit Breaker CB1 (Not Shown)

3Circuit Breaker CB2

4Circuit Breaker CB3

5Circuit Breaker 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 breaker.

Ref. 217 358−B / 803 580 / 803 576−C

OM-4423 Page 36

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Miller Electric Big Blue 400 KX manual Overload Protection, Press button to reset breaker

Contents

Description OM-4423 215 178NProcesses File Engine Drive From Miller to You Table of Contents − Maintenance & Troubleshooting 8-1. Routine Maintenance Directives StandardsDecrot6/05 Sound Level Information Decrotsound1/05 Symbol Usage Arc Welding Hazards Engine Hazards Compressed Air Hazards EMF Information Principal Safety StandardsCalifornia Proposition 65 Warnings Radiation can cause interference UN Choc Électrique peut tuer Signification des symboles− Consignes DE Sécurité − Lire Avant Utilisation LES Fumées ET LES GAZ peuvent être dangereux DES 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 LE Surchauffement peut endom- mager le moteur électrique ’AIR Comprimé peut provoquer des blessures’EMPLOI Excessif peut LES Étincelles Volantes risquent de provoquer des blessures Pour 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 Curves Fuel Consumption Curve shows typical fuel use under weld or power loadsExceeding duty cycle can damage unit and void warranty Duty Cycle And Overheating AC Generator Power Curve Ac power curve shows the gen- erator power in amperes − Installation Installing Welding Generator Mounting Welding Generator Installing Exhaust Pipe Tools Needed 1/2Stop engine and let cool Do not overfill battery cells Activating The Dry Charge Battery If ApplicableConnecting The Battery Connect Negative − Cable Last Fuel Do not use gasoline. Gasoline will damage engine Coolant Recovery TankEngine Prestart Checks Oil MIG and Fcaw Welding Connecting To Weld Output TerminalsStick and TIG Welding Stop engine 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 Stop engine before Connecting To Remote 14 Receptacle RC14 Socket Front Panel Controls See Section Stop Description Of Front Panel Controls See Section Process/Contactor Switch On CC/CV Models Process/Contactor Switch Settings Do not Strike Like a Match Lift-ArcStart ProcedureLift-Arc Start Method Touch Lift-Arc t TIG Remote Voltage/Amperage Control − Operating Auxiliary Equipment Volt Receptacles − Maintenance & Troubleshooting Routine Maintenance Maintenance Label To clean air filter Servicing Air CleanerBy the warranty Do not clean housing with air hose Inspecting And Cleaning Spark Arrestor Muffler Stop engine and let cool. Reinstall cleanout plugServicing Engine Cooling System Adjusting Engine Speed On Standard Models Maximum To change oil and filter Servicing Fuel And Lubrication SystemsStop engine and let cool After servicing, start engine To replace primary canister fuel filter Press button to reset breaker Overload Protection Checking Generator Brushes Replace Damaged Brushes Voltmeter/Ammeter Help Displays Help 20 DisplayHelp 25 Display Troubleshooting Standard Generator PowerWelding Engine Check for obstructed throttle solenoid − Electrical Diagrams Circuit Diagram For Welding Generator 221 499-B − 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 Perform From flammables Run-In Procedure Using Resistance GridBank/grid Do not perform run-in − Generator Power Guidelines Selecting EquipmentGrounding Generator To Truck Or Trailer Frame Earth ground if supplying Grounding When Supplying Building SystemsHow Much Power Does Equipment Require? Amperes x Volts = Watts Industrial 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 Watts Approximate Power Requirements For Contractor Equipment Contractor Rating Starting Watts Running Watts Single-Phase Induction Motor Starting Requirements Power Required To Start MotorHow Much Power Can Generator Supply? KVA/HP x HP x 1000 = Starting Amperage Typical Connections To Supply Standby Power Selecting Extension Cord Use Shortest Cord Possible Current Load Watts Amperes − Parts List 103 − −5 104 − −3 96− −2 102 101 100 71− −4 3031 5756 Dia Part Description Quantity Mkgs Dia Part Description Quantity 213600 Panel, Front w/Components Panel, Front w/Components -1Item FUEL/HM Control Panel Generator Generator -1Item 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