Hobart OM-1581 manual Adjusting Contact Tip Position, Voltage Sensing Lead Connections

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3-10. Adjusting Contact Tip Position

1Contact Tip

2Nozzle

3

4

3

Adjusting barrel changes contact tip location from 1/16 in (1.6 mm) out beyond end of nozzle to 1/4 in (6.3 mm) inside nozzle.

3 Jam Nut

2

2

1

1

4

Water-Cooled Model

Air-Cooled Model

3-11. Voltage Sensing Lead Connections

2

3

 

 

 

3

 

 

 

1

 

 

 

5

4

6

 

 

 

RC5

 

E D C B A

 

 

 

 

3

2

1

 

EXT

 

INT

Tools Needed:

1/4 in

4 Barrel

To change contact tip location, loosen jam nut, and turn barrel. Tighten jam nut.

150 434 / Ref. 150 431

Unit is factory set for constant volt- age (CV) welding. To set unit for constant current (CC) welding, proceed as follows:

1Terminal Strip 2T

2Strain Relief

Loosen screws of strain relief.

3 Voltage Sensing Lead

Route ring terminal end of lead through strain relief, and connect ring terminal to terminal A of terminal strip 2T. Tighten screws on strain relief.

4Motor Speed Control Board PC1

5Jumper Plug

6Receptacle RC5

For constant voltage (CV) welding, place jumper plug in INT. position. Do not connect voltage sensing lead clamp to workpiece.

For constant current (CC) welding, place plug in EXT. position. Connect clamp end of voltage sensing lead to workpiece.

Reinstall right side panel.

Ref. 151 772-A

OM-1581 Page 17

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Contents OM-1581 ProcessesDescription From Hobart to You Table of Contents Page Arc Welding Hazards Symbol UsageElectric Shock can kill Fumes and Gases can be hazardousWelding can cause fire or explosion ARC Rays can burn eyes and skinFlying Metal can injure eyes Buildup of GAS can injure or killPrincipal Safety Standards About Pacemakers EMF InformationConsignes DE Securite Lire Avant Utilisation Signification des symbolesUN Choc É Lectrique peut tuer LES Fumé ES ET LES GAZ peuvent ê tre dangereuxLE Soudage peut provoquer un incendie ou une explosion DES Particules Volantes peuvent blesser les yeuxLE Bruit peut affecter l’ouïe LA Chute DE L’APPAREIL peut blesser Risque D’INCENDIE OU’EMPLOI Excessif peut DES Organes Mobiles peuvent provoquer des blessuresInformation sur les champs é lectromagné tiques Principales normes de sé curitéWire Feeder Specifications SpecificationsGun Specifications Duty Cycle And OverheatingInstallation Constant Voltage CV Weld- ing Power Source Plug Removing Top Cover Of Gun Air-Cooled Gun Connections Water-Cooled Gun Connections Air-Cooled Feeder Connections Rear Of Water Fitting Left- Hand Threads Water-Cooled Feeder ConnectionsVoltage Sensing Lead Connections Adjusting Contact Tip PositionContactor 12 VAC/Contactor Control Plug InformationPLG5 Installing Wire Spool Threading Welding Wire Through Feeder Coolant Guidelines Threading Welding Wire Through GunAdjusting Wire Feed Starting Speed Operation Safety EquipmentFront Panel Controls Of Feeder Air-Cooled Model Shown Work And Voltage Sensing Cable ClampsJog Switch Voltage/Wire Speed Switch And Meter OptionalRun-In Speed Control Spot Controls Optional Remote Voltage Control Optional Power SwitchInternal Controls Flowmeter OptionalShielding Gas Gun ControlsCoolant Supply For Water-Cooled Models Only Sequence Of Gas Metal Arc Welding Gmaw Continuous Or SpotMaintenance & Troubleshooting Routine MaintenanceMonths Changing Or Cleaning Gun Drive Roll Changing Feeder Drive Roll And Wire Inlet Guide Replacing Or Cleaning Feeder Drive Roll Bearing Replacing Or Cleaning Gun Drive Roll BearingRemoving Contact Tip Adapter In Air-Cooled Models Changing Gun Contact Tip And LinerRemoving Contact Tip Adapter In Water-Cooled Models Replacing Hub AssemblyAdjusting Hub Tension Water Flow Switch Optional For Water-Cooled ModelsOverload Protection Wire Feeder Trouble TroubleshootingGun Trouble Circuit Diagram For Wire Feeder Electrical DiagramsCircuit Diagram For Gun Main Assembly Parts ListDia Part CB1 Motor & Wire Drive -1 Item Panel, Front w/Components Water-Cooled Model Illustrated Panel, Front w/Components -1 Item Exploded View Of Gun 133 203 Barrel Assembly -4 Item Optional Call HOBART1 for your local Hobart distributor Hobart Welding Products Contact your Distributor for