Hobart 125 EZ, H-9B manual Installation, Installing Work Clamp, Process/Polarity Table

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SECTION 4 − INSTALLATION

4-1. Installing Work Clamp

. Connection hardware must be tightened with proper tools. Do not just hand tighten hardware. A loose electrical connection will cause poor weld performance and excessive heating of the work clamp.

1Nut

2Work Cable From Unit

3Work Clamp

4Screw

5Work Clamp Tabs

Bend tabs around work cable.

1

3

6 Insulator Grip

Slide one insulating grip over work cable before connecting to clamp.

6

2

5

4

Tools Needed:

7/16 in

7/16 in

Slide insulating grips over handles.

Ref. 802 456

4-2. Process/Polarity Table

	Process	Polarity	Cable Connections
	Process	Polarity	Cable To Gun	Cable To Work Clamp
			Cable To Gun	Cable To Work Clamp
	FCAW − Self-shielding wire −	DCEN − Straight Polarity	Connect to negative (−)	Connect to positive (+) output
	no shielding gas		output terminal	terminal

4-3. Polarity

1

.Polarity must be set for DCEN (flux core wire) only.

1Lead Connections For Direct Current Electrode Negative (DCEN)

Always read and follow wire manufacturer’s recommended polarity, and see Section 4-2.

Close door.

Ref. 210 428

OM-923 Page 11

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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 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− Specifications 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 Troubleshooting Table Trouble RemedyDoes 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 Poor 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 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 Service SupportAssistance Hobart Welding Products Contact your Distributor for