Miller Electric 250 manual Table of Contents

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TABLE OF CONTENTS

SECTION 1 − SAFETY PRECAUTIONS − READ BEFORE USING

1

1-1.

Symbol Usage

1

1-2.

Arc Welding Hazards

1

1-3.

Engine Hazards

3

1-4.

Compressed Air Hazards

3

1-5. Additional Symbols For Installation, Operation, And Maintenance

4

1-6. California Proposition 65 Warnings

5

1-7.

Principal Safety Standards

5

1-8.

EMF Information

5

SECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE AVANT UTILISATION

6

2-1.

Signification des symboles

6

2-2. Dangers relatifs au soudage à l’arc

6

2-3. Dangers existant en relation avec le moteur

8

2-4. Dangers liés à l’air comprimé

9

2-5. Dangers supplémentaires en relation avec l’installation, le fonctionnement et la maintenance

9

2-6. Proposition californienne 65 Avertissements

11

2-7. Principales normes de sécurité

11

2-8.

Information EMF

11

SECTION 3 − DEFINITIONS

12

SECTION 4 − SPECIFICATIONS

12

4-1. Weld, Power, and Engine Specifications

12

4-2. Dimensions, Weights, and Operating Angles

13

4-3. Dimensions For Units With Optional Running Gear

13

SECTION 5 − INSTALLATION

14

5-1.

Installing Welding Generator

14

5-2.

Installing Exhaust Pipe

15

5-3.

Connecting the Battery

15

5-4. Overview And Engine Prestart Checks

16

5-5. Connecting to Weld Output Terminals

18

5-6. Selecting Weld Cable Sizes*

19

SECTION 6 − OPERATING THE WELDING GENERATOR

20

6-1.

Engine Control Switches

20

6-2.

Weld Output Controls

21

6-3. Typical Stick Welding Connections And Control Settings

22

6-4. Typical MIG Welding Connections And Settings

23

6-5. Typical MIG Connections And Settings Using Weld Control And Spoolgun

24

SECTION 7 − OPERATING AUXILIARY EQUIPMENT

25

7-1.

Generator Power Receptacles

25

7-2. Simultaneous Weld And Power

26

7-3. Wiring Instructions For Optional 240 Volt, Single-Phase Plug (NEMA 14-50P)

26

SECTION 8 − OPERATING OPTIONAL BATTERY CHARGER

27

8-1.

Battery Charge Controls

27

8-2. Determining Battery Charging Current

27

8-3. Battery Charge Cable Connections

28

8-4.

Battery Charging Procedure

29

SECTION 9 − MAINTENANCE AND TROUBLESHOOTING

31

9-1.

Routine Maintenance

31

9-2. Maintenance Label And Engine Maintenance Activities

32

9-3.

Servicing Air Cleaner

34

9-4.

Adjusting Engine Speed

35

9-5.

Overload Protection

38

9-6.

Troubleshooting Tables

39

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Contents 2007−05−21 OM-217 455HFile Engine Drive Visit our website atFrom Miller to You Table of Contents 13-5 13-213-3 13-4HOT Parts can cause severe burns Symbol UsageArc Welding Hazards Electric Shock can killWelding can cause fire or explosion Fumes and Gases can be hazardousBuildup of GAS can injure or kill ARC Rays can burn eyes and skinCompressed Air Hazards Engine HazardsFalling Unit can cause injury Welding Wire can cause injuryHOT Parts can cause burns and injury Fire or Explosion hazardRadiation can cause interference Principal Safety StandardsCalifornia Proposition 65 Warnings EMF InformationIndique des instructions spécifiques Signification des symboles− Consignes DE Sécurité − Lire Avant Utilisation UN Choc Électrique peut tuerDES 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 blessuresEn ce qui concerne les implants médicaux Proposition californienne 65 AvertissementsPrincipales normes de sécurité Information EMF− Definitions − SpecificationsSymbol Definitions Weld, Power, and Engine SpecificationsDimensions, Weights, and Operating Angles Dimensions For Units With Optional Running GearDimensions Mounting − InstallationInstalling Welding Generator Vehicle frame. Always connect a ground wireStop engine and let cool Installing Exhaust PipeConnecting the Battery + −Overview And Engine Prestart Checks Daily pre-start checks Engine Left Side Engine Right SideStarting engine for the first time Run-in period first 100 hoursTools Needed Do not place Connecting to Weld Output TerminalsCorrect Installation Work Weld Output TerminalSelecting Weld Cable Sizes Do not use glow plugs longer than 20 seconds Engine Control SwitchesPlace switch in Run position to operate most MIG equipment − Operating the Welding GeneratorWeld Output Controls Work Clamp Electrode Holder Typical Stick Welding Connections And Control SettingsTypical Settings For 7018 1/8 Electrode Stop engineSet Weld Process Selector switch to Wire − position Dcen Typical MIG Welding Connections And SettingsSet Weld Process Selector switch to Wire + Dcep position Set Weld Process Selector switch to Wire + positionTools Needed 3/4 Work Not Used To Work Left Side View To verify Gfci is working properly Generator Power Receptacles− Operating Auxiliary Equipment At least once a month, run engine atSimultaneous Weld And Power − Operating Optional Battery Charger Battery Charge ControlsDetermining Battery Charging Current Battery Charge Cable Connections Minutes Battery Charging ProcedureStart Your Professional Welding Career Now Routine Maintenance − Maintenance and TroubleshootingStop engine and let cool Oil And Fuel Maintenance Label And Engine Maintenance Activities804 197-A / Ref 803 111-A / 227 Damage when determining whether Cleaner or with dirty element. EngineMent is not covered by the warranty Air cleaner primary element canChecking Fuel Solenoid Adjusting Engine SpeedAdjusting Fuel Solenoid Position Stop screw is factory-set and should not be adjustedCheck for non-binding Adjusting Throttle SolenoidChecking Throttle Solenoid 16 mmMaking Engine Speed Adjustments Adjusting Idle SpeedAdjusting Weld/Power Speed Supplementary Protector CB8 Overload ProtectionComponent Panel Stop engine Fuse F1Trouble Remedy Troubleshooting TablesGenerator Power WeldingEngine Maintenance Display ActionCurrent transformer CT1, and throttle solenoid TS1 − Parts ListRecommended Spare Parts Recommended Spare PartsCircuit Diagram For Welding Generator − Electrical Diagrams228 719-B OM-217 455 231 607-B Run-In And Wetstacking − RUN-IN and WetstackingIdle − Performance DataFuel Consumption Curves US Gal./HrAC Amperes At 120 Volts Generator Power CurveDuty Cycle VoltsStick Mode Volt-Ampere Curves DC Amps CC/AC Stick Mode AC VoltsAC Amps DC Amps MIG Mode Volt-Ampere Curve− Generator Power Guidelines Selecting EquipmentGrounding Generator To Truck Or Trailer Frame Amperes x Volts = Watts Grounding When Supplying Building SystemsHow Much Power Does Equipment Require? Use ground device as stated in electrical codesFarm/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 WattsContractor Rating Starting Watts Running Watts Approximate Power Requirements For Contractor EquipmentKVA/HP x HP x 1000 / Volts = Starting Amperage Power Required To Start MotorHow Much Power Can Generator Supply? Single-Phase Induction Motor Starting RequirementsTypical Connections To Supply Standby Power Selecting Extension Cord Use Shortest Cord Possible Stick Welding Procedure Weld current starts when electrode touches work- piece− Stick Welding Smaw Guidelines 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 HolderElectrode Movement During Welding Conditions That Affect Weld Bead Shape16 in 30 1.6 mm Tack Welds Butt JointsLap Joint Tee JointPossible Causes Corrective Actions Troubleshooting − PorosityTroubleshooting − Excessive Spatter Weld TestTroubleshooting − Incomplete Fusion Troubleshooting − Lack Of PenetrationTroubleshooting − Excessive Penetration Troubleshooting − Burn-Through Troubleshooting − Waviness Of BeadTroubleshooting − Distortion Work like a Pro Service Your distributor also givesSupport Your distributor and/or equipment manufacturer’s To locate a Distributor or Service Agency visitMiller Electric Mfg. Co For assistance in filing or settling claims, contact
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