Miller Electric Big Blue 300 manual Overload Protection

Page 45

8-9. Overload Protection

3 7

4

 

!

Stop engine.

 

 

 

. When a circuit breaker, supple-

 

 

mentary

protector,

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 CB7

 

6

Supplementary Protector CB8

 

7

Circuit Breaker CB9

 

 

 

CB1 protects the engine battery cir-

 

cuit. If CB1 opens, the engine will not

 

crank. CB1

automatically

resets

1

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.

CB7 protects the 115 volt ac output to remote receptacle RC14. If CB7 opens, 115 volt output to RC14 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 protector.

CB9 protects the throttle solenoid against overload. If CB9 opens, the engine does not automatically idle down. Check the linkage and sole- noid. CB9 automatically resets.

56

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Contents Processes OM-4433218 314PDescription File Engine DriveFrom Miller to You Table of Contents Warranty Arc 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 interference− Consignes DE Sécurité − Lire Avant Utilisation Signification des symbolesUN Choc Électrique peut tuer Indique des instructions spécifiquesLES 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 Some symbols are found only on CE products Symbols And Definitions− Specifications Weld, Power, And Engine SpecificationsDimensions, Weights, And Operating Angles MIG Mode Stick ModeTIG Mode Volt-Ampere CurvesFuel Consumption Curve shows typical fuel use under weld or power loadsDuty Cycle And Overheating This unit is rated for welding at 250 amperes continuously150 125 100 AC Generator Power CurveInstalling Welding Generator − InstallationLocation/Airflow Clearance Grounding1Supporting The Unit Mounting Welding GeneratorMounting Surface To Weld Unit In PlaceTools Needed 1/2 Installing Exhaust PipeStop engine and let cool Point exhaust pipe in desired diConnecting The Battery Activating The Dry Charge Battery If ApplicableDo not overfill battery cells Close door after connecting batteryEngine Prestart Checks Coolant Recovery TankFuel OilStick and TIG Welding Connecting To Weld Output TerminalsMIG and Fcaw Welding Stop engineStop engine Before Connecting to Weld Output terminals Selecting Weld Cable Sizes150 ft 200 ft 250 ft Socket Information Connecting To Remote 14 Receptacle RC14Welding Symbols Front Panel Controls See Section − Operating Welding GeneratorDescription Of Front Panel Controls See Section Process/Contactor Switch Settings Process/Contactor SwitchLift-Arc Start Method Touch Lift-ArcStart ProcedureDo not Strike Like a Match Lift-Arc t TIGRemote Voltage/Amperage Control Generator Power Receptacles − Operating Auxiliary EquipmentAt least once a month, run engine at Routine Maintenance − Maintenance & TroubleshootingMaintenance Label To clean air filter Servicing Air CleanerServicing Engine Cooling System Inspecting And Cleaning Optional Spark Arrestor MufflerMay affect engine warranty Adjusting Engine Speed On Standard ModelsMaximum Do not set engine speed higherWeld/Power Speed Adjustment Engine Speed AdjustmentEngine Speed No Load Rpm max 62.6 Hz 1500 rpm 50 HzTo change oil and filter Servicing Fuel And Lubrication SystemsTo replace primary canister fuel filter To drain water from fuel systemOverload Protection Replace Damaged Brushes Checking Generator BrushesVoltmeter/Ammeter Help Displays Help 20 DisplayHelp 25 Display Welding TroubleshootingEngine Generator PowerCheck for obstructed throttle solenoid Material Thickness Reference Chart Circuit Diagram For Welding Generator − Electrical Diagrams219 228−E − RUN-IN Procedure WetstackingWelding Generator From flammables Run-In Procedure Using Load BankOutput and do not exceed duty Cycle or equipment damage mayRun-In Procedure Using Resistance Grid − Generator Power Guidelines Selecting EquipmentGrounding Generator To Truck Or Trailer Frame How Much Power Does Equipment Require? Grounding When Supplying Building SystemsUse ground device as stated in electrical codes Amperes x Volts = WattsApproximate 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 101 111 110 −3 109 108 −2 107 102 103 9897 104 106 105 − Parts List80Fig.12−4 66654243 TE1 Dia Part Description Quantity Mkgs Batt Panel, Front w/Components -1Item Panel, Front w/ComponentsFUEL/HM Control Panel Generator -1Item GeneratorRectifier Assembly Wiring Harnesses Service Your distributor also givesSupport Miller 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

Big Blue 300 specifications

The Miller Electric Big Blue 300 is a powerful and versatile engine-driven welder that has become a popular choice for professionals in various industries. Designed to excel in both welding and generator applications, the Big Blue 300 provides reliable performance, advanced technology, and exceptional durability, making it suitable for demanding work environments.

One of the standout features of the Big Blue 300 is its impressive output capabilities. With a maximum welding output of 300 amps, this machine can handle a wide range of welding applications, from stick to TIG and MIG processes. The dual voltage output allows for versatility in the field, accommodating both 120V and 240V power requirements, ensuring you can power tools and equipment directly from the welder.

The Big Blue 300 is equipped with Miller's innovative Clean Air Technology, which ensures that the engine operates efficiently and produces fewer emissions. This feature not only meets environmental standards but also enhances the longevity of the machine. The cooling system is engineered to maintain optimal operating temperatures, extending the life of the engine and related components.

For ease of use, the Big Blue 300 features an intuitive control panel with easy-to-read gauges and simple adjustment settings, allowing operators to quickly set welding parameters. The built-in Fuel Gauge and Hour Meter provide real-time information about fuel levels and usage, enabling efficient operation and maintenance planning.

Another notable characteristic of the Big Blue 300 is its rugged construction. Built to withstand harsh job site conditions, the machine features a durable frame and heavy-duty components that can endure the rigors of everyday use. The oversized wheels and solid axle design enhance portability, making it easy to transport across various terrains.

Additionally, the Big Blue 300 is designed for quiet operation, making it suitable for locations where noise levels are a concern. Its low decibel rating ensures that it won’t disturb the work environment, contributing to a more comfortable and productive atmosphere.

Overall, the Miller Electric Big Blue 300 is a robust engine-driven welder that combines power, efficiency, and portability. Whether working on construction sites, maintenance tasks, or fabrication projects, this machine delivers exceptional performance and reliability, making it a valuable tool for professionals who demand the best in their equipment.
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