Hobart 125 EZ Manuel d'utilisateur Page 1

OM-923 223 112C2006−08ProcessesArc Welding Power Source AndWire FeederDescriptionFlux Cored (FCAW) WeldingHandler 125 EZAnd H-9B GunRFile: Flux Cored

OM-923 Page 6Le rayonnement de l’arc du procédé de soudagegénère des rayons visibles et invisibles intenses(ultraviolets et infrarouges) susceptibles

OM-923 Page 72-3. Dangers supplémentaires en relation avec l’installation, le fonctionnement et la maintenanceRisque D’INCENDIE OU D’EXPLO-SION.D Ne p

OM-923 Page 82-5. Principales normes de sécuritéSafety in Welding, Cutting, and Allied Processes, ANSI Standard Z49.1,de Global Engineering Documents

OM-923 Page 9SECTION 3 − SPECIFICATIONS3-1. SpecificationsRated WeldingOutputMaximumAmperageMaximum Open-Circuit VoltageDCAmperes Input atRated Load O

OM-923 Page 103-3. Volt-Ampere CurvesThe volt-ampere curves show theminimum and maximum voltageand amperage output capabilities ofthe welding power so

OM-923 Page 11SECTION 4 − INSTALLATION4-1. Installing Work Clamp1 Nut2 Work Cable From Unit3 Work Clamp4 Screw5 Work Clamp TabsBend tabs around work c

OM-923 Page 124-4. Installing Wire Spool And Adjusting Hub TensionWhen a slight force is neededto turn spool, tension is set.1/2 inTools Needed:Ref. 8

OM-923 Page 134-5. Selecting A Location And Connecting Input Power For 115 VAC Model1 Rating Label2 Grounded ReceptacleA 115 volt, 20 ampere individua

OM-923 Page 144-6. Installing Contact Tip And NozzleTools Needed:Ref. 804 241-AY Turn off welding power source.1 NozzleRemove nozzle.2 Contact Tip3 Ti

OM-923 Page 154-7. Threading Welding Wire1 Wire Spool2 Welding Wire3 Inlet Wire Guide4 Pressure Adjustment Knob5 Drive Roll6 Gun CableLay gun cable ou

Hobart Welders manufactures a full lineof welders and welding related equipment.For information on other quality Hobart products, contact your local H

OM-923 Page 16SECTION 5 − OPERATION5-1. Controls1 Material Thickness SelectorSwitchUse switch to select the materialthickness range. Do not switchunde

OM-923 Page 175-2. Operating The GunRef. 804 240-A1 Trigger SwitchWhen pressed, energized wirefeeds.1

OM-923 Page 18SECTION 6 − MAINTENANCE &TROUBLESHOOTING6-1. Routine MaintenanceY Disconnect power before maintaining.3 MonthsReplaceunreadablelabel

OM-923 Page 196-4. Changing Drive Roll Or Wire Inlet Guide1 Pressure Adjustment Knob2 Pressure AssemblyPivot pressure adjustment knobdown, and lift pr

OM-923 Page 206-5. Replacing Gun Contact TipTools Needed:Ref. 804 241-AY Turn off welding power source.1 NozzleRemove nozzle.2 Contact Tip3 Tip Adapte

OM-923 Page 216-6. Cleaning Gun Liner804 241-A / Ref. 804 123-A / 804 128-A / Ref. 803 837-AY Turn off welding power source.1 Nozzle2 Contact Tip3 Ada

OM-923 Page 226-7. Replacing Gun LinerRef. 804 241-A / 804 123-A / 803 837-A / 803 899-ATools Needed:8 mm / 10 mmRemove nozzle. Cut off wireat contact

OM-923 Page 236-7. Replacing Gun Liner (Continued)When liner exits cable at gunhandle, guide liner into headtube. Continue to push liner untilit exits

OM-923 Page 246-8. Troubleshooting TableTrouble RemedyElectrode wire feeding stops duringweldingStraighten gun cable and/or replace damaged parts.weld

OM-923 Page 25SECTION 7 − ELECTRICAL DIAGRAM230 951-AFigure 7-1. Circuit Diagram

TABLE OF CONTENTSSECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1. Symbol Us

OM-923 Page 26SECTION 8 − WIRE WELDING GUIDELINES8-1. Typical FCAW Process ConnectionsY Weld current can damageelectronic parts in vehicles.Disconnect

OM-923 Page 278-2. Typical Control SettingsThese settings are guidelines only. Material and wire type, joint design, fitup,position, etc. affect setti

OM-923 Page 288-3. Holding And Positioning Welding GunWelding wire is energized when gun trigger is pressed. Before lowering helmet andpressing trigge

OM-923 Page 298-4. Conditions That Affect Weld Bead ShapeWeld bead shape depends on gun angle, direction of travel, electrode extension(stickout), tra

OM-923 Page 308-5. Gun Movement During WeldingNormally, a single stringer bead is satisfactory for most narrow groove weld joints;however, for wide gr

OM-923 Page 318-8. Troubleshooting − Excessive SpatterExcessive Spatter − scattering of molten metal particles thatcool to solid form near weld bead.S

OM-923 Page 328-11. Troubleshooting − Lack Of PenetrationLack Of Penetration − shallowfusion between weld metal andbase metal.Lack of Penetration Good

OM-923 Page 338-14. Troubleshooting − Waviness Of BeadWaviness Of Bead − weld metal that is not parallel and does not coverjoint formed by base metal.

OM-923 Page 34SECTION 9 − PARTS LIST. Hardware is common andnot available unless listed.804 124-B12345667891011121314151617181936202122232425262730282

OM-923 Page 35DescriptionPartNo.Dia.Mkgs.ItemNo.Figure 8-1. Main AssemblyQuantity1 210 432 CASE SECTION, front/bottom/rear 1. . . . . . . . . . . . .

TABLE OF CONTENTSSECTION 8 − WIRE WELDING GUIDELINES 26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OM-923 Page 361804 243-A235 − See Table 8-14677Figure 8-2. H-9B GunDescriptionPartNo.225 397ItemNo.Figure 8-2. H-9B GunQuantity1 169 715 NOZZLE, slip

OM-923 Page 37803 442-B451678923Figure 8-3. Wire Drive AssemblyQuantityDescriptionPartNo.209 532ItemNo.Figure 8-3. Wire Drive Assembly1 212 377 BEARIN

Notes

Warranty Questions?Call1-800-332-32817 AM − 6 PM ESThobart_warr 2006−01ServiceYou always get the fast,reliable response youneed. Most replacementparts

PRINTED IN USA © 2005 Hobart Welding Products. 6/05Hobart Welding ProductsAn Illinois Tool Works Company600 West Main StreetTroy, OH 45373 USAFor Tech

OM-923 Page 1SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USINGsom _3/05Y Warning: Protect yourself and others from injury — read and follow these pre

OM-923 Page 2Arc rays from the welding process produce intensevisible and invisible (ultraviolet and infrared) raysthat can burn eyes and skin. Sparks

OM-923 Page 31-3. Additional Symbols For Installation, Operation, And MaintenanceFIRE OR EXPLOSION hazard.D Do not install or place unit on, over, or

OM-923 Page 41-5. Principal Safety StandardsSafety in Welding, Cutting, and Allied Processes, ANSI Standard Z49.1,from Global Engineering Documents (p

OM-923 Page 5SECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE AVANT UTILISATIONfre_som _3/05Y Avertissement : se protéger et protéger les autres contre le ris