Bobcat 250 - Miller

1 Bobcat 250 ProcessesDescription Non-Critical TIG (GTAW)WeldingStick (SMAW) WeldingMIG (GMAW) WeldingFlux Cored (FCAW) WeldingEngine Driven Welding GeneratorOM-4419211 392U2011 02 28 Visit our website : Engine DriveMiller Electric manufactures a full lineof welders and welding related information on other quality Millerproducts, contact your local Miller distributor to receive the latest fullline catalog or individual specification sheets. To locate your nearestdistributor or service agency call 1-800-4-A- Miller , or visit us on the you and congratulations on choosing Miller .

2 Now you can getthe job done and get it done right. We know you don t have time to doit any other s why when Niels Miller first started building arc welders in 1929,he made sure his products offered long-lasting value and superiorquality. Like you, his customers couldn t afford anything less. Millerproducts had to be more than the best they could be. They had to be thebest you could , the people that build and sell Miller products continue thetradition. They re just as committed to providing equipment and servicethat meets the high standards of quality and value established in Owner s Manual is designed to help you get the most out of yourMiller products.

3 Please take time to read the Safety precautions. Theywill help you protect yourself against potential hazards on the ve made installation and operation quickand easy. With Miller you can count on yearsof reliable service with proper if for some reason the unit needs repair,there s a Troubleshooting section that willhelp you figure out what the problem is. Theparts list will then help you to decide theexact part you may need to fix the and service information for yourparticular model are also is the first weldingequipment manufacturer inthe to be registered tothe ISO 9001 Quality as hard as you do every power source fromMiller is backed by the mosthassle-free warranty in Miller to YouMil_Thank 2009 09iTABLE OF CONTENTSSECTION 1 SAFETY PRECAUTIONS READ BEFORE Arc Welding Hydraulic Air Symbols For Installation, Operation.

4 And Proposition 65 Safety 2 CONSIGNES DE S CURIT LIRE AVANT des relatifs au soudage l existant en relation avec le li s l li s l air comprim suppl mentaires en relation avec l installation, le fonctionnement et la californienne 65 normes de s curit relatives aux 3 4 Weld, Power, and Carbureted Engine Specifications (Subaru EH-65, Kohler CH-23) Weld, Power, And EFI Engine Specifications (Kohler ECH-730) , Weights, And Operating For Units With Optional Running Duty Consumption (Subaru-Powered Units) Consumption (Kohler-Powered Units) Volt-Ampere Power 5 Number And Rating Label Welding Generator To Truck Or Trailer Exhaust Or Replacing The Fuel Injection (EFI) System And Battery Prestart Checks (Subaru-Powered Units) Prestart Checks (Kohler-Powered Units) Weld Output To Weld Output Selecting Weld Cable Sizes* 6 OPERATING THE WELDING Front Panel Controls (See Section 6-2) Of Controls (See Section 6-1)

5 Weather Engine Typical Stick Welding Connections And Control Typical MIG Welding Connections And Typical MIG Connections And Settings Using Weld Control And OF CONTENTSSECTION 7 OPERATING AUXILIARY Power Weld And Optional 240 Volt 8 Optional Spark Air Electronic Fuel Injection (EFI) System And Servicing Engine Oil, Oil Filter, and Fuel Filter (Subaru-Powered Units) Engine Oil, Oil Filter, And Fuel Filter (Kohler-Powered Units) Engine Speed (Kohler Carbureted Units [CH-23]) Engine Speed (Kohler EFI Units [ECH-730]) Adjusting Engine Speed (Subaru-Powered Units) 9 Welding Power 10 PARTS Spare 11 ELECTRICAL 12 GENERATOR POWER 13 STICK WELDING (SMAW) 14 MIG WELDING (GMAW) PARTS LIST - Page 1 SECTION 1 SAFETY PRECAUTIONS READ BEFORE USINGrom_2010 03 Protect yourself and others from injury read, follow, and save these important safety precautions and operating Symbol UsageDANGER!

6 Indicates a hazardous situation which, ifnot avoided, will result in death or serious injury. Thepossible hazards are shown in the adjoining symbolsor explained in the a hazardous situation which, if not avoided,could result in death or serious injury. The possiblehazards are shown in the adjoining symbols or ex-plained in the Indicates statements not related to personal injury. Indicates special group of symbols means Warning! Watch Out! ELECTRICSHOCK, MOVING PARTS, and HOT PARTS hazards. Consult sym-bols and related instructions below for necessary actions to avoid Arc Welding HazardsThe symbols shown below are used throughout this manualto call attention to and identify possible hazards.

7 When yousee the symbol, watch out, and follow the related instructionsto avoid the hazard. The safety information given below isonly a summary of the more complete safety informationfound in the Safety Standards listed in Section 1-8. Read andfollow all Safety qualified persons should install, operate, maintain, andrepair this operation, keep everybody, especially children, live electrical parts can cause fatal shocks orsevere burns. The electrode and work circuit iselectrically live whenever the output is on. The inputpower circuit and machine internal circuits are also livewhen power is on.

8 In semiautomatic or automatic wirewelding, the wire, wire reel, drive roll housing, and allmetal parts touching the welding wire are electricallylive. Incorrectly installed or improperly groundedequipment is a SHOCK can kill. Do not touch live electrical parts. Wear dry, hole -free insulating gloves and body protection. Insulate yourself from work and ground using dry insulating matsor covers big enough to prevent any physical contact with the workor ground. Do not use AC output in damp areas, if movement is confined, or ifthere is a danger of falling. Use AC output ONLY if required for the welding process.

9 If AC output is required, use remote output control if present onunit. Additional safety precautions are required when any of the follow-ing electrically hazardous conditions are present: in damplocations or while wearing wet clothing; on metal structures suchas floors, gratings, or scaffolds; when in cramped positions suchas sitting, kneeling, or lying; or when there is a high risk of unavoid-able or accidental contact with the workpiece or ground. For theseconditions, use the following equipment in order presented: 1) asemiautomatic DC constant voltage (wire) welder, 2) a DC manual(stick) welder, or 3) an AC welder with reduced open-circuit volt-age.

10 In most situations, use of a DC, constant voltage wire welderis recommended. And, do not work alone! Disconnect input power or stop engine before installing orservicing this equipment. Lockout/tagout input power according toOSHA 29 CFR (see Safety Standards). Properly install and ground this equipment according to itsOwner s Manual and national, state, and local codes. Always verify the supply ground check and be sure that inputpower cord ground wire is properly connected to ground terminal indisconnect box or that cord plug is connected to a properlygrounded receptacle outlet.