Hobart Welding Products OM-227 978B manual Dia Part Mkgs Description Quantity

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Item	Dia.	Part
No.	Mkgs.	No.	Description	Quantity
			Figure 10-1. Main Assembly (Continued)

. . . 40	. . . . . . . . .	196 574	. . SWITCH, rocker DPST	. . . 1
. . . 41	. . . . . . . . .	228 400	. . KNOB, pointer (voltage)	. . . 1
. . . 42	. . . . . . . . .	211 338	. . KNOB, pointer (WFS)	. . . 1
. . . 43	. . . . . . . . .	217 778	. . MOTOR, gear	. . . 1
. . . 44	. . . . . . . . .	193 189	. . CONNECTOR, gun	. . . 1
. . . 45	. . . . . . . . .	196 654	. . SCREW, thumb	. . . 1
. . . 46	. . . . . . . . .	230 012	. . FITTING, gas barbed	. . . 1
. . . 47	. . . . . . . . .	202 925	. . ROLL, feed .024 in, .030/.035 in	. . . 1
. . . 48	. . . . . . . . .	194 508	. . HEAD, feed assy	. . . 1
. . . 49	. . . . . . . . .	203 025	. . GUIDE, wire inlet	. . . 1
. . . 50	. . . . . . . . .	227 949	. . LABEL, weld chart	. . . 1
. . . 51	. . . . . . . . .	204 711	. . LATCH	. . . 1
. . . 52	. . . . . . . . .	217 585	. . CONTACTOR	. . . 1
. . . 53	. . . . . . . . .	203 572	. . LABEL, warn gen precaution (EN/FR models only)	. . . 1
. . . 54	. . . . . . . . .	. . . . . . . . .	. . LABEL, nameplate (order by model and serial number)	. . . 1
. . . 55	. . . . . . . . .	048 282	. . RCPT W/SKTS,(service kit)	. . . 1
. . . 56	. . . . . . . . .	202 661	. . LED, yellow	. . . 1
. . . 57	. . . . . . . . .	233 346	. . PLATE, stiffener base	. . . 1
. . . 58	. . . . . . . . .	229 793	. . WINDTUNNEL	. . . 1

+When ordering a component originally displaying a precautionary label, the label should also be ordered.

To maintain the factory original performance of your equipment, use only Manufacturer’s Suggested Replacement Parts. Model and serial number required when ordering parts from your local distributor.

OM-227 978 Page 42

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Contents Description OM-227 978BProcesses 2007−04From Hobart to You Table of Contents − MIG Welding Gmaw Guidelines − Parts ListTypical MIG Process Connections Arc Welding Hazards Symbol UsageMarks a special safety message Electric Shock can killFlying Metal can injure eyes ARC Rays can burn eyes and skinWelding can cause fire or explosion Buildup of GAS can injure or killCalifornia Proposition 65 Warnings EMF Information Principal Safety StandardsAbout Pacemakers LES Fumées ET LES GAZ peuvent être dangereux UNE Décharge Électrique peut entraîner la mortIndique un message de sécurité particulier DES Pièces Chaudes peuvent provoquer des brûlures graves LE Soudage peut provoquer un incendie ou une explosionDES Particules Volantes peuvent blesser les yeux LE Bruit peut endommager l’ouïe’EMPLOI Excessif peut SUR Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser DES Organes Mobiles peuvent provoquer des blessuresBoulevard, Rexdale, Ontario, Canada M9W 1R3 téléphone En ce qui concerne les stimulateurs cardiaquesSpecifications − SpecificationsSymbols And Definitions − DefinitionsAmperes Duty Cycle And OverheatingVolt-Ampere Curves OutputInstalling Welding Gun − InstallationInstalling Work Clamp Process/Polarity Table Changing PolarityInstalling Gas Supply Selecting a Location And Connecting Input Power Installing Wire Spool And Adjusting Hub Tension Electrical Service GuideTools Needed Installing Contact Tip And Nozzle Connecting Optional Spool Gun Appropriate settingThreading Welding Wire − Operation ControlsWeld Parameter Chart For 230 VAC Model 227 949-B Overload Protection Drive Motor Protection − Maintenance &TROUBLESHOOTINGRoutine Maintenance MonthsReplacing Gun Contact Tip Changing Drive Roll Or Wire Inlet GuideTurn Off power before replacing contact tip 030/.035 Groove Stamped 023/.025 Groove Stamped .030/.035Disconnect gun from unit Cleaning Or Replacing Gun LinerTo Reassemble Gun Replacing Switch And/Or Head Tube Troubleshooting Table Trouble RemedyOM-227 978 − Electrical Diagram Circuit Diagram227 951-B − MIG Welding Gmaw Guidelines Typical MIG Process ConnectionsThickness to Amperage a Typical MIG Process Control SettingsWire Size Amperage Range AmperageHolding And Positioning Welding Gun Perpendicular Drag Conditions That Affect Weld Bead ShapePush Short Normal LongGood Weld Bead Characteristics Poor Weld Bead CharacteristicsGun Movement During Welding Troubleshooting − Excessive Penetration Troubleshooting − Excessive SpatterTroubleshooting − Porosity Possible Causes Corrective ActionsTroubleshooting − Incomplete Fusion Troubleshooting − Lack Of PenetrationTroubleshooting − Burn-Through Common MIG Shielding Gases Troubleshooting − Waviness Of BeadTroubleshooting − Distortion Weld beadTroubleshooting Guide For Semiautomatic Welding Equipment OM-227 978 − Parts List Main AssemblyDia Part Dia Part Mkgs Description Quantity H-14 Gun 231Options Optional Drive RollsConsumables Page Work like a Pro Support ServiceAssistance Contact your Distributor for Hobart Welding Products