Hobart 125 EZ, H-9B manual Threading Welding Wire, Input Power

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4-7. Threading Welding Wire

+ −

Tools Needed:

1Wire Spool

2Welding Wire

3Inlet Wire Guide

4Pressure Adjustment Knob

5Drive Roll

6Gun Cable

Lay gun cable out straight.

4

1

2

3

5

6

 

 

 

 

. Hold wire tightly to keep it

 

 

 

 

from unraveling.

+ −

 

 

 

+ −

Open pressure assembly.

Tighten

6 in (150 mm)

Pull and hold wire; cut off end.

. Loosen knob completely, then rotate pressure adjustment knob in a clockwise direction until drive roll is tight against the welding wire.

Adjust drive roll pressure just tightly enough to prevent wire from slipping against drive roll during operation.

4 in (102 mm)

Push wire thru guides into gun liner;

continue to hold wire.

Be sure that wire is positioned

in proper feed roll groove. Close and tighten pressure assembly, and let go of wire.

Press gun trigger until wire comes out of gun.

INPUT

POWER

Remove gun nozzle and contact tip.

Turn power on.

.Tip adapter may also require removal to allow wire to feed out end of gun.

Tighten

 

 

 

WOOD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Be sure that contact tip matches wire diameter.

Feed wire to check drive roll pressure.

Reinstall tip adapter, if applicable, contact tip

Tighten knob enough to prevent slipping.

and nozzle.

Cut off wire. Close door.

 

 

 

 

 

 

804 123-A

OM-923 Page 15

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Contents File Flux Cored Fcaw OM-923Processes DescriptionFrom Hobart to You Table of Contents Warranty 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 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 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 sécuritéSpecifications − SpecificationsDuty Cycle And Overheating Volt-Ampere Curves Polarity − InstallationInstalling Work Clamp Process/Polarity TableInstalling 4 in 102 mm Wire Spool Installing Wire Spool And Adjusting Hub TensionDo not move or operate unit where it could tip Turn off welding power source Installing Contact Tip And NozzleInput Power Threading Welding WireControls − OperationOperating The Gun Drive Motor Protection − Maintenance &TROUBLESHOOTINGRoutine Maintenance Overload ProtectionSlide replacement wire guide into Changing Drive Roll Or Wire Inlet GuideReplacing Gun Contact Tip Cleaning Gun Liner Replacing Gun Liner End of wire at spool13/16 in 21 mm Trouble Remedy Troubleshooting TableDoes not run Circuit Diagram − Electrical DiagramTypical Fcaw Process Connections − Wire Welding GuidelinesAmperage Typical Control SettingsWire Size Amperage Range Thickness to Amperage aHolding And Positioning Welding Gun Conditions That Affect Weld Bead Shape Good Weld Bead Characteristics Poor Weld Bead CharacteristicsGun Movement During Welding Possible Causes Corrective Actions Troubleshooting − Excessive SpatterTroubleshooting − Porosity Troubleshooting − Excessive PenetrationTroubleshooting − Incomplete Fusion Troubleshooting − Lack Of PenetrationTroubleshooting − Burn-Through Wire does not feed Troubleshooting − Waviness Of BeadTroubleshooting − Distortion Troubleshooting Guide For Semiautomatic Welding EquipmentMain Assembly − Parts ListDia Part Description Quantity Pkg 225209 Wire Drive AssemblyPage Support ServiceAssistance Hobart Welding Products Contact your Distributor for