OM-4434 | Miller Electric Bobcat 225 specification

. A complete Parts List is available at www.MillerWelds.com

Notes

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Miller Electric Bobcat 225 manual OM-4434

Contents

File Engine Drive OM-4434 From Miller to You Table of Contents 11-1 10-110-2 10-3 HOT Parts can cause severe burns Symbol UsageArc Welding Hazards Electric Shock can kill Welding can cause fire or explosion Fumes and Gases can be hazardousBuildup of GAS can injure or kill ARC Rays can burn eyes and skin Compressed Air Hazards Engine Hazards Falling Unit can cause injury Welding Wire can cause injuryHOT Parts can cause burns and injury Fire or Explosion hazard Radiation can cause interference Principal Safety StandardsCalifornia Proposition 65 Warnings EMF Information Indique des instructions spécifiques Signification des symboles− Consignes DE Sécurité − Lire Avant Utilisation UN Choc Électrique peut tuer DES Pièces Chaudes peuvent provoquer des brûlures graves LES Fumées ET LES GAZ peuvent être dangereuxLE Soudage peut provoquer un in cendie ou une explosion LE Bruit peut affecter l’ouïe ’EXPLOSION DE LA Batterie peuDES Organes Mobiles peuvent pro voquer des blessures LA Chaleur DU Moteur peut pro- voquer un incendie ’AIR Comprimé peut provoquer des blessuresRisque D’INCENDIE OU D’EXPLO- Sion ’EMPLOI Excessif peut LE Surchauffement peut endom- mager le moteur électriqueDES Organes Mobiles peuvent provoquer des blessures LES Fils DE Soudage peuvent provoquer des blessures Proposition californienne 65 Avertissements Principales normes de sécuritéInformation EMF − Definitions − SpecificationsSymbol Definitions Weld, Power, and Engine Specifications Dimensions Dimensions, Weights, and Operating AnglesDimensions For Units With Optional Running Gear Robin-PoweredUnit 560 lb 254 kg Fuel Consumption Kohler-Powered Units Fuel Consumption Robin-Powered Units For CC/AC Mode For CC/DC Mode For CV/DC ModeVolt-Ampere Curves Duty Cycle Generator Power Curve Do not use flexible mounts Grounding − InstallationInstalling Welding Generator Mounting Engine Prestart Checks Robin-Powered Units Oil CheckOil Engine Prestart Checks Kohler-Powered Units Replacing The Battery Installing Exhaust PipeConnecting Or Replacing the Battery Connecting The Battery Connect negative − cable last Work Weld Output Terminal Connecting to Weld Output TerminalsTools Needed Correct Installation Stop engine Selecting Weld Cable Sizes 150 ft 200 ft 250 ft350 ft 400 ft 45 m 60 m 70 m 90 m 105 m 120 m OM-4434 − Operating the Welding Generator Engine Control SwitchPlace switch in Run position to operate most MIG equipment Coarse Range Switch Frequently Loaded Cold Weather Engine OperationInfrequently Loaded Electrode Typical Stick Welding Connections And Control Settings Typical MIG Welding Connections And Settings Solid Wire ApplicationsBe sure to use the correct size weld cables see Section Fine Control, Weld Process switch Settings Self-Shielded Flux Core Wire Applications Work Typical Settings ForSet wire feed speed between 240-270 ipm OM-4434 Material Standard Receptacles − Operating Auxiliary Equipment Breaker trips Optional Generator Power Receptacles Receptacle Simultaneous Weld And PowerWiring Optional 240 Volt Plug Current Available in Amperes 240 Maintenance Label Robin-Powered Units − Maintenance ROBIN-POWERED Units 200 Routine Maintenance Robin-Powered UnitsStop engine before maintaining 100 Servicing Air Cleaner Robin-Powered Units Servicing Optional Spark Arrestor Robin-Powered UnitsStop engine and let cool Oil Fill Close valve and valve capBefore adding oil Running engine Weld/Power Speed Adjustment Adjusting Engine Speed Robin-Powered UnitsIdle Speed Adjustment Turn idle speed screw for fine adjustments Stop engine. Disconnect negative − battery cable Overload Protection Robin-Powered Units Maintenance Label Kohler-Powered Units − Maintenance − KOHLER-POWERED Units Hours Nl Weld Cables ~ Slip Rings Nl Brushes OM-4434 Routine Maintenance Kohler-Powered Units Servicing Air Cleaner Kohler−Powered Units Stop engine and let cool Oil Drain Valve 2 ID x 7 in Hose Oil FilterFull Before adding oil Running engine Turn idle speed screw for fine ad- justments Adjusting Engine Speed Kohler-Powered Units Overload Protection Kohler-Powered Units Servicing Optional Spark Arrestor Kohler-Powered UnitsIf a fuse opens, it usually indi Trouble Remedy − TroubleshootingWelding Troubleshooting Generator Power Troubleshooting Engine Troubleshooting Recommended Spare Parts − Parts ListControl switch S2, and throttle solenoid TS1 Recommended Spare Parts Circuit Diagram For Welding Generator − Electrical Diagrams 228 461-A − Generator Power Guidelines Selecting EquipmentGrounding Generator To Truck Or Trailer Frame How Much Power Does Equipment Require? Grounding When Supplying Building Systems Farm/Home Equipment Rating Starting Watts Running Watts Approximate Power Requirements For Industrial MotorsApproximate Power Requirements For Farm/Home Equipment Industrial Motors Rating Starting Watts Running Watts Contractor Rating Starting Watts Running Watts Approximate Power Requirements For Contractor Equipment KVA/HP x HP x 1000 / Volts = Starting Amperage Power Required To Start MotorHow Much Power Can Generator Supply? Single-Phase Induction Motor Starting Requirements Typical Connections To Supply Standby Power Cord Lengths for 240 Volt Loads Selecting Extension Cord Use Shortest Cord PossibleCord Lengths for 120 Volt Loads Current Load Watts Amperes − Stick Welding Smaw Guidelines Stick Welding Procedure Electrode and Amperage Selection Chart Striking an Arc − Scratch Start TechniqueStriking an Arc − Tapping Technique 10-30 9090 End View of Work Angle Poor Weld Bead CharacteristicsGood Weld Bead Characteristics Positioning Electrode Holder Electrode Movement During Welding Conditions That Affect Weld Bead Shape 16 in 30 1.6 mm Tack Welds Butt JointsLap Joint Tee Joint Possible Causes Corrective Actions Troubleshooting − PorosityTroubleshooting − Excessive Spatter Weld Test Troubleshooting − Incomplete Fusion Troubleshooting − Lack Of PenetrationTroubleshooting − Excessive Penetration Troubleshooting − Burn-Through Troubleshooting − Waviness Of BeadTroubleshooting − Distortion Holding And Positioning Welding Gun − MIG Welding Gmaw Guidelines Push Perpendicular Drag Short Normal LongSlow Normal Fast Gun Movement During Welding 15-7 Troubleshooting − Excessive Spatter 15-8 Troubleshooting − Porosity15-9 Troubleshooting − Excessive Penetration Lack Of Penetration − shallow Fusion between weld metalImproper joint preparation Base metal to move Unsteady hand Support hand on solid surface or use two hands Common MIG Shielding Gases ApplicationFillet Page Service Your distributor also givesSupport Your distributor and/or equipment manufacturer’s To locate a Distributor or Service Agency visitMiller Electric Mfg. 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