Hobart Welding Products OM-1594 manual Setting Switches For Preflow And Postflow

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4-16. Setting Switches For Preflow And Postflow

1

Top Of PC1

.Unit arrives from the factory with preflow Off and postflow turned On.

To set switches for preflow and postflow, proceed as follows:

1Motor Speed Control Board PC1

2DIP Switch S1

.Preflow and postflow have pre- set time values and cannot be changed.

To provide a 0.25 second preflow time, use a small nonconductive screwdriver to set switch S1-1 in the up position. To turn preflow time off, set S1-1 in the down position.

To provide a 0.5 second postflow time, use a small nonconductive screwdriver to set switch S1-2 in the up position. To turn postflow time off, set S1-2 in the down position.

Reinstall side panel.

2

Tools Needed:

Nonconductive

1/4 in

Ref. 801 557 / 197 716

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Contents Description OM-1594Processes From Hobart to You Table of Contents Electrical Diagrams Marks a special safety message Symbol UsageArc Welding Hazards Electric Shock can killWelding can cause fire or explo- sion ARC Rays can burn eyes and skinFlying Metal can injure eyes Buildup of GAS can injure or killPrincipal Safety Standards About Pacemakers EMF InformationUN Choc É Lectrique peut tuer Signification des symbolesLES Fumé ES ET LES GAZ peuvent ê tre dangereux Identifie un message de sé curité particulierLE Bruit peut affecter l’ouïe LE Soudage peut provoquer un incendie ou une explosionDES Particules Volantes peuvent blesser les yeux LA Chute DE L’APPAREIL peut blesser Risque D’INCENDIE OU’EMPLOI Excessif peut DES Organes Mobiles peuvent provoquer des blessuresConsignes relatives aux stimulateurs cardiaques Principales normes de sé curitéInformation sur les champs é lectromagné tiques Keep your head out of the fumes Disconnect input plug or power before working on machineDrive rolls can injure fingers Rating Label For CE Products Specifications Symbols And DefinitionsPower DiameterContinuous Welding Duty Cycle And OverheatingContinuous Welding Minutes Welding Above 50 psi 345 kPa Do not use gas pressureRear Panel Air-Cooled Feeder ConnectionsAir-Cooled Gun Connections Water-Cooled Feeder Connections Water-Cooled Gun Connections Voltage Sensing Lead Connections Pin Plug InformationMeters/Minute Inches/Minute Digital Meter DisplayOpening Top Cover Of XR-Edge Gun Adjusting Contact Tip PositionXR Edge Gun Pistol Grip GunRemoving Top Cover Of Pistol Grip Gun Installing Wire SpoolTools Needed Open tension arm Threading Welding Wire Through Feeder150 mm Pull and hold wire cut off end Proceed to Section Nonconductive Surface Feed wire to check drive roll Threading Welding Wire Through GunFor XR-Edge Gun For Pistol-Grip GunAdjusting Wire Feed Starting Speed Setting Switches For Preflow And Postflow Trigger hold actuation time Range is from 0 to 4 seconds Adjusting Trigger Hold Actuation TimeControls OperationInternal Controls Shielding Gas Coolant Supply For Water-Cooled Models Only Gun ControlsSequence Of Gas Metal Arc Welding Gmaw Continuous Or Spot Wire size Feeder Drive Assembly MaintenancePost Pressure Roll w/Bearing Gun Drive Assembly Maintenance For An XR-Edge GunInsert chamfered end of liner into head tube Removing Contact Tip Adapter In XR-Edge GunsReplacing Head Tube Liner In XR-Edge Guns Replacing Gun Cable Liner Turn Off welding power Source and wire feederChanging Gun Contact Tip Replacing Or Cleaning Gun Drive Roll In Pistol-Grip GunsReplacing Head Tube Liner In Pistol-Grip Guns Turn Off wire feeder and welding power source Top CoverPressure Roll Insert chamfered end of liner into head tube Tool NeededRemoving Contact Tip Adapter In Air-Cooled Pistol-Grip Guns Reinstall gun cover Replacing Hub AssemblyTurn Off Wire Water Flow Switch Optional For Water-Cooled ModelsOverload Protection Engine WeldingDisconnect power before troubleshooting TroubleshootingFilter, and clean fittings Trouble RemedyOM-1594 Electrical Diagrams 186 931-D Circuit Diagram For Gun OM-1594 12 13 16 17 Main AssemblyMP1 Motor & Wire Drive Motor & Wire Drive -1 Item See Figure Panel, Front w/Components Water-Cooled Model IllustratedPanel, Front w/Components -1 Item See Exploded View Of XR-Edge Gun185 202 Barrel Assembly Of XR-Edge Gun 46 47 Exploded View Of Pistol-Grip Gun15Fig 133 Dia Part Barrel Assembly Of Pistol-Grip Gun 137 Barrel ASSEMBLY, water cooled 15W & 30W models OM-1594 OM-1594 Support ServiceCall Contact your Distributor forHobart Welding Products
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