Miller Electric MOG-250/250AC Owner's Manual

Dialarc 250/250P AC/DCProcessesDescriptionRStick (SMAW) WeldingArc Welding Power SourceOM-314 029 861VNovember 1999Visit our website atwww.MillerWelds

OM-314 Page 6Le rayonnement de l’arc du procédé de soudagegénère des rayons visibles et invisibles intenses(ultraviolets et infrarouges) susceptibles

OM-314 Page 71-3. Dangers supplémentaires en relation avec l’installation, le fonctionnementet la maintenanceRisque D’INCENDIE OUD’EXPLOSION.D Ne pas

OM-314 Page 81-4. Principales normes de sécuritéSafety in Welding and Cutting, norme ANSI Z49.1, de l’American Wel-ding Society, 550 N.W. Lejeune Rd,

OM-314 Page 9SECTION 2 – INSTALLATION2-1. SpecificationsModelAmperes Input At Rated Load Output,50 Hz, Single-PhaseAmperes Input At Rated LoadOutput,

OM-314 Page 102-3. Volt-Ampere Curvesssb1.1 10/91 – SB-002 696-A / SB–002 689-AThe volt-ampere curves show theminimum and maximum voltageand amperage

OM-314 Page 112-5. Selecting A Location1 Rating LabelUse rating label to determine inputpower needs. Label located on frontpanel.2 Line Disconnect Dev

OM-314 Page 122-7. Connecting To Weld Output TerminalsST-800 052-A / Ref. S-161 415For DC Weld Output1 Negative (–) Weld OutputTerminal2 Positive (+)

OM-314 Page 132-8. Electrical Service Guide60 Hertz Models With Power Factor Correction Without Power Factor CorrectionInput Voltage200 230 460 575 20

OM-314 Page 142-9. Placing Jumper Links And Connecting Input Powerinput_3 3/96 - ST-111 901-FY Have only qualified personsmake this installation. Seer

OM-314 Page 15SECTION 3 – OPERATION3-1. ControlsST-186 1371 Range Selector SwitchUse switch to select ac or dc weld amperagerange.If desired amperage

Miller Electric manufactures a full lineof welders and welding related equipment.For information on other quality Millerproducts, contact your local M

OM-314 Page 16SECTION 4 – MAINTENANCE & TROUBLESHOOTING4-1. Routine Maintenance. Maintain more oftenduring severe conditions.Y Disconnect power be

OM-314 Page 17SECTION 5 – ELECTRICAL DIAGRAMSSB-090 666-DFor Primary Circuit Diagram Portion, referto the Circuit Diagram located inside thewrapper of

OM-314 Page 18SECTION 6 – PARTS LISTST-133 712-G. Hardware is common andnot available unless listed.123456798111061213FIG 6–4141516FIG 6–217Figure 6-1

OM-314 Page 19Replace Coils at Factory or Factory Authorized Service StationDescriptionQuantityPartNo.Dia.Mkgs.ItemNo.ModelWithoutPFCWithPFCFigure 6-1

OM-314 Page 20DescriptionQuantityPartNo.Dia.Mkgs.ItemNo.Figure 6-2. Panel, Front w/Components (Fig 6-1 Item 16)1 NAMEPLATE, (order by model and serial

OM-314 Page 21Description QuantityPartNo.ItemNo.088 087Figure 6-3. Switch, Range 2 Position (Fig 6-2 Item 3)1 072 026 BRACKET, mtg switch 1. . . . .

OM-314 Page 22Notes

Warranty Questions?Call1-800-4-A-MILLERfor your localMiller distributor.miller_warr 7/00Your distributor also givesyou ...ServiceYou always get the fa

PRINTED IN USA  2000 Miller Electric Mfg. Co. 6/00Miller Electric Mfg. Co.An Illinois Tool Works Company1635 West Spencer StreetAppleton, WI 54914 US

The following terms areused interchangeablythroughout this manual:TIG = GTAWStick = SMAWTABLE OF CONTENTSSECTION 1 – SAFETY PRECAUTIONS - READ BEFORE

OM-314 Page 1SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE USINGsom _nd_4/981-1. Symbol UsageMeans Warning! Watch Out! There are possible hazardswith t

OM-314 Page 2Arc rays from the welding process produce intensevisible and invisible (ultraviolet and infrared) raysthat can burn eyes and skin. Sparks

OM-314 Page 31-3. Additional Symbols For Installation, Operation, And MaintenanceFIRE OR EXPLOSION hazard.D Do not install or place unit on, over, or

OM-314 Page 41-5. EMF InformationConsiderations About Welding And The Effects Of Low FrequencyElectric And Magnetic FieldsWelding current, as it flows

OM-314 Page 5SECTION 1 – CONSIGNES DE SECURITE – LIRE AVANTUTILISATIONsom _nd_fre 4/981-1. Signification des symbolesSignifie Mise en garde ! Soyez vi