Miller Electric Big Blue 300 manual Description Of Front Panel Controls See Section

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6-2. Description Of Front Panel Controls (See Section 6-1)

Engine Starting Controls

1 Preheat Switch

Use switch to energize starting aid for cold weather starting (see starting instructions fol- lowing).

2 Engine Control Switch

Use switch to start engine, select engine speed (if unit has auto idle option), and stop engine.

In Run position, engine runs at weld/power speed. In Auto position (optional), engine runs at idle speed at no load and weld speed with load applied.

3 Engine Stop Lever

Use lever to stop engine if Engine Control switch does not work.

.The Engine Stop lever shuts off the fuel

supply. However, the Engine Stop lever will not stop the engine if the engine can draw fuel-rich air from the surrounding atmosphere (oil refineries).

To Start:

NOTICE − Do not use ether.

.If engine does not start, let engine come

to a complete stop before attempting re- start.

Above 325 F (05 C): turn Engine Control switch to Start. Release Engine Control switch when engine starts.

Below 325 F (05 C): turn engine control switch to Auto position. Push Preheat switch up for 60 seconds. Turn Engine Control switch to Start. Release Engine Control switch and Preheat switch when engine starts.

To Stop: turn Engine Control switch to Off position.

Engine Gauges, Meters, And Lights

4 Fuel Gauge/Hourmeter

Use gauge to check fuel level or total engine operating hours.

To check fuel level or engine hours when en- gine is not running, turn Engine Control switch to Run or Auto (optional) position.

5 Engine Indicator Light

Light goes on and engine stops if engine tem- perature exceeds 230° F (110° C) or engine oil pressure is below 10 psi (69 kPa).

.Normal engine temperature is 180 - 2035 F (82 - 955 C). Normal oil pressure is 30

-60 psi (207 - 414 kPa).

NOTICE − Do not run engine until trouble is fixed.

Weld Controls

6 Remote Control Receptacle

Use receptacle to connect remote controls, wire feeders, and tools.

When a remote control is connected to the Remote receptacle, the Auto Sense Remote feature automatically switches voltage/am- perage control to the remote control (see Sec- tion 5-9).

With remote control connected, weld output is determined by a combination of front panel and remote control voltage/amperage set- tings.

If no remote control is connected to the Re- mote receptacle, the front panel Voltage/Am- perage control adjusts voltage and amper- age.

.If a remote device connected to Remote

Receptacle RC14 is faulty or is discon- nected, the meters display Help 25 (see Section8-11). Clear fault by stopping and restarting the unit or by turning Process/ Contactor switch to another position.

7 Process/Contactor Switch

See Section 6-3for Process/Contactor switch information.

8 Voltage/Amperage Control

With Process/Contactor switch in any Stick or TIG setting, use control to adjust amperage. With Process/Contactor switch in any Wire (MIG) position, use control to adjust voltage. With Voltage/Amperage Adjust Switch in Re- mote position, control limits the remote am- perage in Stick or TIG mode, but has no effect in Wire (MIG) modes.

Weld Meters

.Weld meters also work in combination to

display troubleshooting help codes (see Section 8-11).

9 DC Voltmeter

Voltmeter displays preset voltage (MIG weld- ing) with contactor off, and actual output volt- age with the contactor on. Voltmeter displays voltage at the weld output terminals, but not necessarily the welding arc due to resistance of cable and connections.

To set voltage, turn contactor off and turn Pro- cess/Contactor switch to Wire position. Turn V/A control until desired voltage is displayed on Voltmeter. When welding is finished, volt- meter displays weld voltage and then defaults to preset voltage.

10 DC Ammeter

Ammeter displays preset amperage (Stick and TIG only) when not welding, and actual output amperage when welding.

To set amperage, turn Process/Contactor switch to Stick or TIG position. Turn V/A con- trol until desired amperage is displayed on Ammeter. When welding is finished, ammeter displays weld amperage and then defaults to preset amperage.

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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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