Miller Electric 300 P manual Check for obstructed throttle solenoid

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Trouble	Remedy

Engine slowly stopped and cannot be	Check fuel level.
restarted.

	Check engine air and fuel filters (see Sections 8-3and 8-8).

	See engine manual.

Battery discharges between uses.	Turn Engine Control switch off when unit is not running.

	Clean top of battery with baking soda and water solution; rinse with clear water.

	Recharge or replace battery if necessary.

	Periodically recharge battery (approximately every 3 months).

Engine idles, but does not come up to	Have Factory Authorized Service Agent check idle module PC5 and current transformer CT1.
weld speed (units with idle option only).

	Check for obstructed throttle solenoid.

Engine does not run at idle speed	Check for obstructed throttle solenoid.
(units with idle option only).

	Circuit breaker CB9 may be open. CB9 automatically resets when fault is corrected (see Section 8-9).

	Have Factory Authorized Service Agent check idle module PC5, and control relay CR4.

Engine uses oil during run-in period;	Dry engine according to run-in procedure (see Section 10).
wetstacking occurs.

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Contents Description OM-4433218 314KProcesses File Engine DriveFrom Miller to You Table of Contents Warranty Symbol Usage Arc Welding HazardsEngine Hazards Compressed Air Hazards EMF Information Principal Safety StandardsCalifornia Proposition 65 Warnings Radiation can cause interferenceUN Choc Électrique peut tuer Signification des symboles− Consignes DE Sécurité − Lire Avant Utilisation LES Fumées ET LES GAZ peuvent être dangereuxDES 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’EMPLOI Excessif peut LA Chaleur DU Moteur peut pro- voquer un incendie’AIR Comprimé peut provoquer des blessures LE Surchauffement peut endom- mager le moteur électriquePour les moteurs diesel LE Soudage À L’ARC risque de provoquer des interférencesPour les moteurs à essence Boulevard, Rexdale, Ontario, Canada M9W 1R3 téléphone− 50 h Std − DefinitionsStd Manufacturer’s Rating Label Symbols And Definitions Weld, Power, And Engine Specifications − SpecificationsDimensions, Weights, And Operating Angles TIG Mode Stick ModeMIG Mode Volt-Ampere CurvesFuel Consumption Curve shows typical fuel use under weld or power loadsExceeding duty cycle can damage unit and void warranty Duty Cycle And OverheatingAC Generator Power Curve 150 125 100See -2for lifting eye rating See -2for mounting information − InstallationInstalling Welding Generator GroundingMounting Welding Generator Stop engine and let cool Installing Exhaust PipeTools Needed 1/2 Point exhaust pipe in desired diDo not overfill battery cells Activating The Dry Charge Battery If ApplicableConnecting The Battery Close door after connecting batteryFuel Do not use gasoline. Gasoline will damage engine Coolant Recovery TankEngine Prestart Checks OilMIG and Fcaw Welding Connecting To Weld Output TerminalsStick and TIG Welding Stop engine350 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 beforeConnecting To Remote 14 Receptacle RC14 Socket Information− Operating Welding Generator Front Panel Controls See SectionDescription Of Front Panel Controls See Section Process/Contactor Switch Process/Contactor Switch SettingsDo not Strike Like a Match Lift-ArcStart ProcedureLift-Arc Start Method Touch Lift-Arc t TIGRemote Voltage/Amperage Control − Operating Auxiliary Equipment Generator Power ReceptaclesAt least once a month, run engine at − Maintenance & Troubleshooting Routine MaintenanceMaintenance Label To clean air filter Servicing Air CleanerBy the warranty Do not clean housing with air hoseStop engine and let cool. Reinstall cleanout plug Inspecting And Cleaning Optional Spark Arrestor MufflerServicing Engine Cooling System Do not set engine speed higher Adjusting Engine Speed On Standard ModelsMaximum Stop engine. Close doorEngine Speed No Load Engine Speed AdjustmentWeld/Power Speed Adjust- ment Rpm max 62.6 Hz 1250 rpm 41.6 HzTo replace primary canister fuel filter Servicing Fuel And Lubrication SystemsTo change oil and filter To drain water from fuel systemOverload Protection Checking Generator Brushes Replace Damaged BrushesHelp 20 Display Voltmeter/Ammeter Help DisplaysHelp 25 Display Troubleshooting WeldingGenerator Power EngineCheck for obstructed throttle solenoid Material Thickness Reference Chart − Electrical Diagrams Circuit Diagram For Welding Generator219 228−D Wetstacking − RUN-IN ProcedureWelding Generator Stop engine Do not touch hot exhaust Run-In Procedure Using Load BankProcedure at less than From flammables Do not PerformFrom flammables Run-In Procedure Using Resistance GridBank/grid Do not perform run-inSelecting Equipment − Generator Power GuidelinesHas this symbol Grounding Generator To Truck Or Trailer FrameEarth ground if supplying Grounding When Supplying Building SystemsHow Much Power Does Equipment Require? Use ground device as stated Electrical codesIndustrial 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 WattsApproximate Power Requirements For Contractor Equipment Contractor Rating Starting Watts Running WattsSingle-Phase Induction Motor Starting Requirements Power Required To Start MotorHow Much Power Can Generator Supply? KVA/HP x HP x 1000 = Starting AmperageTypical Connections To Supply Standby Power Selecting Extension Cord Use Shortest Cord Possible Current Load Watts Amperes109 − Parts List108 -2 107 101 102 103 100 104 106 105 81 Fig 7372 71 67 66 65 PC3 Dia Part Description Quantity Mkgs Batt Panel, Front w/Components Panel, Front w/Components -1ItemFUEL/HM Control Panel Generator Rectifier Assembly Wiring Harnesses Your distributor also gives ServiceSupport 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