Hobart Welding Products OM-498 manual Troubleshooting, Welding, Auxiliary Power, Trouble Remedy

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SECTION 8 – TROUBLESHOOTING

8-1. Troubleshooting

A. Welding

Trouble

Remedy

 

 

No weld output.

Check Amperage control setting.

 

 

 

Check weld connections.

 

 

 

Be sure all equipment is disconnected from receptacles when starting unit.

 

 

 

Have Factory Authorized Service Agent check brushes, slip rings, rotor, stator, reactor L2, output

 

rectifier CR3, stabilizer L3, integrated rectifiers CR1 and CR2, and amperage control R1.

 

 

Low weld output.

Check Amperage control and throttle lever settings.

 

 

 

Check engine speed, and adjust if necessary (see Section 7-4 or 7-5).

 

 

 

Service air cleaner according to engine manual.

 

 

 

Check weld cable size and length.

 

 

 

Have Factory Authorized Service Agent check brushes, slip rings, capacitor C1, reactor L2, and recti-

 

fier CR2.

 

 

High weld output.

Check Amperage control setting.

 

 

 

Check engine speed, and adjust if necessary (see Section 7-4 or 7-5).

 

 

Erratic weld output.

Check Amperage control setting.

 

 

 

Tighten and clean connections to electrode and workpiece.

 

 

 

Use dry, properly-stored electrodes for Stick welding.

 

 

 

Remove excessive coils from weld cables.

 

 

 

Clean and tighten connections both inside and outside welding generator.

 

 

 

Check engine speed, and adjust if necessary (see Section 7-4 or 7-5).

 

 

 

Check throttle/governor linkage for smooth, non-binding operation.

 

 

B. Auxiliary Power

Trouble

Remedy

 

 

No output at auxiliary power

Reset circuit breakers (see Section 6-1).

receptacles.

 

 

 

 

Check receptacle wiring and connections.

 

 

 

Check engine speed, and adjust if necessary (see Section 7-4 or 7-5). Output stops if engine speed is

 

too low.

 

 

 

Have Factory Authorized Service Agent check stator windings.

 

 

High power output.

Check engine speed, and adjust if necessary (see Section 7-4 or 7-5).

 

 

Low power output.

Check Amperage control setting.

 

 

 

Check engine speed, and adjust if necessary (see Section 7-4 or 7-5). Output stops if engine speed is

 

too low.

 

 

 

Move throttle lever to Run (far right) position (see Section 5-1 or 5-2).

 

 

Erratic power output.

Check fuel level.

 

 

 

Check receptacle wiring and connections.

 

 

 

Check throttle/governor linkage for smooth, non-binding operation.

 

 

 

Service air cleaner according to engine manual.

 

 

 

Check engine speed, and adjust if necessary (see Section 7-4 or 7-5). Output stops if engine speed is

 

too low.

 

 

OM-498 Page 28

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Contents Description OM-498Processes From Hobart to You Table of Contents Page Symbol Usage Arc Welding HazardsElectric Shock can kill ARC Rays can burn eyes and skinEngine Hazards Battery Explosion can Blind Moving Parts can cause injuryEngine Exhaust Gases can kill Engine Heat can cause firePrincipal Safety Standards EMF InformationRadiation can cause interference ARC Welding can cause interferenceSignification des symboles Consignes DE SÉ Curité Lire Avant UtilisationUN Choc É Lectrique peut tuer LES Fumé ES ET LES GAZ peuvent ê tre dangereuxLE Soudage peut provoquer un in- cendie ou une explosion DES Particules Volantes peuvent blesser les yeuxDES PIÈ CES Chaudes peuvent provoquer des brû lures graves LE Bruit peut affecter l’ouïeDES Organes Mobiles peuvent provoquer des blessures ’EXPLOSION DE LA Batterie peutLA Chaleur DU Moteur peut pro- voquer un incendie LA Chute DE L’APPAREIL peut blesserPrincipales normes de sé curité Information sur les champs é lectromagné tiquesLE Soudage À L’ARC risque de provoquer des interfé rences Consignes relatives aux stimulateurs cardiaquesSpecifications Symbol DefinitionsWeld, Power, And Engine Specifications DefinitionsDimensions, Weights, And Operating Angles Fuel Consumption Kohler-Powered UnitsDimensions Weight Kohler-Powered UnitsFuel Consumption Honda-Powered Units Exceeding duty cycle can damage unit and void warrantyDuty Cycle 100% Duty Cycle at 80 Amperes CC/DCAuxiliary Power Curve Volt-Ampere CurvesGrounding Generator To Truck Or Trailer Frame InstallationInstalling Welding Generator Grounding Generator When Supplying Building Systems Use ground device as stated in electrical codesEngine Prestart Checks Honda-Powered Units Connecting The Battery Honda Electric-Start Models OnlyOil Connect negative cable lastConnecting To Weld Output Terminals Selecting Weld Cable Sizes45 m 60 m 70 m 90 m 105 m 120 m Stop engine beforeControls Kohler-Powered Units Operating the Welding Generator60 Hz Choke Control LeverControls Honda-Powered Units See Section Recoil-Start 2Electric-StartDescription Of Controls Honda-Powered Units See Section Circuit Breakers CB1 and CB2 Auxiliary Power Panel 196 921 CSAOperating Auxiliary Equipment Optional Auxiliary Power Panels Auxiliary Power Panel 495Australia Europe Auxiliary Power Panel 196 Auxiliary Power Panel 495 South America AsiaAuxiliary Power Panel Ratings It exceeds 3500WPlug Wired For 120/240 Wire LoadPlex receptacle shares a load with One half of the 240 V receptacleMaintenance Maintenance Label Overload Protection Honda-Powered Units OnlyAdjusting Engine Speed Kohler-Powered Units Weld/Power Speed AdjustmentTop View Idle Speed Adjustment Stop engine. Close fuel valve Top ViewAdjusting Engine Speed Honda-Powered Units Throttle Control Lever Adjustment ScrewStop engine. Close fuel valve Tools Needed 3/8Troubleshooting TroubleshootingAuxiliary Power WeldingCheck battery voltage Honda electric-start models only Viscosity oil for operating temperatureEngine Make starting difficultElectrical Diagrams Circuit Diagram For Welding GeneratorWiring Diagram For Welding Generator Wiring Diagram For Auxiliary Power Panels 1 Wiring Diagram For Auxiliary Power Panels 2 Auxiliary Power Guidelines Selecting EquipmentGrounding When Supplying Building Systems How Much Power Does Equipment Require?Earth ground if supplying Rating DataApproximate Power Requirements For Industrial Motors Approximate Power Requirements For Farm/Home EquipmentIndustrial Motors Rating Starting Watts Running Watts Farm/Home Equipment Rating Starting Watts Running WattsApproximate Power Requirements For Contractor Equipment Contractor Rating Starting Watts Running WattsPower Required To Start Motor How Much Power Can Generator Supply?Single-Phase Induction Motor Starting Requirements KVA/HP x HP xPower Company Service Obtain and install correct switchSafety practices 120 Single-PhaseSelecting Extension Cord Use Shortest Cord Possible Current Load Watts AmperesStick Welding Smaw Guidelines Stick Welding ProcedureWeld current starts when electrode touches work- piece Striking an Arc Tapping Technique Electrode and Amperage Selection ChartStriking an Arc Scratch Start Technique Poor Weld Bead Characteristics Good Weld Bead CharacteristicsPositioning Electrode Holder 9090 End View of Work AngleConditions That Affect Weld Bead Shape Electrode Movement During WeldingButt Joints Lap JointTee Joint 16 in 1.6 mm Tack WeldsTroubleshooting Porosity Troubleshooting Excessive SpatterWeld Test Possible Causes Corrective ActionsTroubleshooting Excessive Penetration Troubleshooting Incomplete FusionTroubleshooting Lack Of Penetration Troubleshooting Distortion Troubleshooting Burn-ThroughTroubleshooting Waviness Of Bead OM-498 Parts List 31-FigDia Part Europe America CanadaSouth Africa Australia Auxiliary Power Panel 495 Canada Auxiliary Power Panel 495 253 South AfricaAuxiliary Power Panel 495 289 Australia Auxiliary Power Panel 495 290 EuropeOM-498 Service SupportCall Contact your Distributor forHobart Welding Products