Hobart Welding Products 210 Changing Drive Roll Or Wire Inlet Guide, Replacing Gun Contact Tip

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7-4. Changing Drive Roll Or Wire Inlet Guide

1

2

Tools Needed:

3

 

 

.030/.035 Groove

Stamped .024

4

.023/.025 Groove

Stamped .030/.035

1Inlet Wire Guide Securing Screw

2Inlet Wire Guide

Loosen screw. Slide tip as close to drive rolls as possible without touching. Tighten screw.

3 Retaining Pin

To remove drive roll, push drive roll in and rotate it (1/4 turn) to the open slot and slide it out over the retaining pin.

To secure drive roll, locate open slot and push drive roll completely over retaining pin, then rotate drive roll (1/4 turn) to closed slot.

4 Drive Roll

The drive roll consists of two different sized grooves. The stamped markings on the end surface of the drive roll refers to the groove on the opposite side of the drive roll. The groove closest to the motor shaft is the proper groove to thread (see Section 5-11).

Ref. 803 714-A

7-5. Replacing Gun Contact Tip

Y Turn Off power before replacing contact tip.

1 Nozzle

2 Contact Tip

Cut off welding wire at contact tip. Remove nozzle.

Remove contact tip and install new contact tip. Reinstall nozzle.

2

1

Tools Needed:

Ref. 802 399-A

OM-227 978 Page 23

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Contents 2006−12 OM-227 978AProcesses DescriptionFrom Hobart to You Table of Contents − Parts List Electric Shock can kill Symbol UsageMarks a special safety message Arc Welding HazardsBuildup of GAS can injure or kill ARC Rays can burn eyes and skinWelding can cause fire or explosion Flying Metal can injure eyesCalifornia Proposition 65 Warnings Principal Safety Standards EMF InformationAbout Pacemakers UNE Décharge Électrique peut entraîner la mort LES Fumées ET LES GAZ peuvent être dangereuxIndique un message de sécurité particulier DES Pièces Chaudes peuvent provoquer des brûlures graves LE Soudage peut provoquer unIncendie ou une explosion DES Particules Volantes peuvent blesser les yeuxDES Organes Mobiles peuvent provoquer des blessures Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peut SUREn ce qui concerne les stimulateurs cardiaques Principales normes de sécurité− Definitions − SpecificationsSymbols And Definitions SpecificationsOutput Duty Cycle And OverheatingVolt-Ampere Curves Amperes− Installation Installing Welding GunInstalling Work Clamp Changing Polarity Process/Polarity TableInstalling Gas Supply Selecting a Location And Connecting Input Power Do not move or operate unit where it could tipFirst, and never to a line ter- minal Installing Wire Spool And Adjusting Hub Tension Electrical Service GuideFlux Nozzle Installing Contact Tip And NozzleAppropriate setting Connecting Optional Spool GunHold wire tightly to keep it from unraveling Threading Welding WireControls − OperationWeld Parameter Chart For 230 VAC Model 227 949-A Drive Motor Protection − Maintenance &TROUBLESHOOTINGRoutine Maintenance Overload ProtectionChanging Drive Roll Or Wire Inlet Guide Turn Off power before replacing contact tipReplacing Gun Contact Tip Cleaning Or Replacing Gun Liner Disconnect gun from unitTo Reassemble Gun Replacing Switch And/Or Head Tube Troubleshooting Table Trouble RemedyDoes not run OM-227 978 Circuit Diagram − Electrical Diagram227 951-A Typical MIG Process Connections − MIG Welding Gmaw GuidelinesAmperage Typical MIG Process Control SettingsWire Size Amperage Range Thickness to Amperage aHolding And Positioning Welding Gun Conditions That Affect Weld Bead Shape Cored wirePoor Weld Bead Characteristics Good Weld Bead CharacteristicsGun Movement During Welding Possible Causes Corrective Actions Troubleshooting − Excessive SpatterTroubleshooting − Porosity Troubleshooting − Excessive PenetrationTroubleshooting − Lack Of Penetration Troubleshooting − Incomplete FusionTroubleshooting − Burn-Through Application Troubleshooting − Waviness Of BeadTroubleshooting − Distortion Common MIG Shielding GasesWire does not feed Troubleshooting Guide For Semiautomatic Welding EquipmentOM-227 978 Main Assembly − Parts ListDia Part Description Quantity Dia Part Description Quantity Mkgs 231 H-14 GunOptional Drive Rolls OptionsConsumables Page Work like a Pro Service SupportAssistance Hobart Welding Products Contact your Distributor for
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