Hobart Welding Products OM-945 194 047U manual Overload Protection Kohler-Powered Units

Page 36

9-4. Overload Protection (Kohler-Powered Units)

Tools Needed:

3/8 in

1

2

YStop engine.

.If the unit is extremely over-

loaded, weld and generator pow- er will stop. Turn unit off and re- start to reset the generator protection circuit and restore weld and generator power out- put.

If the rated output of the unit is ex- ceeded, engine speed may vary rapidly until the weld or generator power load is reduced.

1Circuit Breaker CB4 (See Parts List)

CB4 protects the generator excitation circuit. If CB4 opens, there will be no/low weld and generator power output.

Press button to reset breaker.

2 Fuse F6 (See Parts List)

F6 protects the engine wiring harness. If F6 opens, the engine does not crank. If F6 opens while the engine is running, the engine stops.

Replace fuse if open. Reinstall panel before operating unit.

. If a fuse or circuit breaker opens,

it usually indicates a more seri- ous problem exists. Contact a Factory Authorized Service Agent.

Ref. 801 221-B / Ref. 802 353-B / Ref. 183 175−A

9-5. Servicing Optional Spark Arrestor (Kohler-Powered Units)

Y Stop engine and let cool.

1 Spark Arrestor Screen

Clean and inspect screen. Replace spark arrestor if screen wires are broken or missing.

1

Tools Needed:

1/4 in

Ref. 801 695-A / Ref. 802 339-A

OM-945 Page 32

Image 36
Contents Processes DescriptionFrom Hobart to You Table of Contents Table of Contents Symbol Usage Arc Welding HazardsEngine Hazards Compressed Air Hazards Principal Safety Standards California Proposition 65 WarningsEMF Information Radiation can cause interferenceSignification des symboles − Consignes DE Sécurité − Lire Avant UtilisationUN Choc Électrique peut tuer LES Fumées ET LES GAZ peuvent être dangereuxLE Soudage peut provoquer un in- cendie ou une explosion DES Particules Volantes peuvent blesser les yeuxDES Pièces Chaudes peuvent provoquer des brûlures graves LE Bruit peut affecter l’ouïe’EXPLOSION DE LA Batterie peut DES Organes Mobiles peuvent provoquer des blessuresLA Chaleur DU Moteur peut pro- voquer un incendie ’AIR Comprimé peut provoquer des blessuresPrincipales normes de sécurité Information sur les champs électromagnétiques− Specifications Symbol DefinitionsWeld, Power, and Engine Specifications − DefinitionsDimensions, Weights, and Operating Angles Generator Power CurveDo not move or operate unit where it could tip Fuel Consumption All Models Duty CycleMaterial Thickness Reference Chart Volt-Ampere Curves− Installation Installing Welding GeneratorEngine Prestart Checks Onan-Powered Units Engine Prestart Checks Kohler-Powered UnitsFuel OilActivating The Dry Charge Battery If Applicable Do not overfill battery cellsRead and follow all instruc ChargerConnecting the Battery Installing Exhaust Pipe+ − Connect negative − cable lastConnecting to Weld Output Terminals Selecting Weld Cable Sizes45 m 60 m 70 m 90 m 105 m 120 m Put terminalsAmperage Selection Table For Stick Smaw Electrodes − Operating the Welding Generator Front Panel Controls− Operating Auxiliary Equipment Standard ReceptaclesCeptacles, use Optional Generator Power Receptacles Wiring Optional 240 Volt Plug− Maintenance ONAN-POWERED Units Maintenance Label Onan-Powered Units Every 500 hEvery 1000 h Servicing Air Cleaner Onan-Powered Units Stop engineOverload Protection Onan-Powered Units Servicing Optional Spark Arrestor Onan-Powered UnitsStop engine. Disconnect nega- tive − battery cable Stop engine and let coolFull Tools Needed Adjusting Engine Speed Onan-Powered Units Idle Speed AdjustmentWeld/Power Speed Adjustment Routine Maintenance Kohler-Powered Units Every 20 hEvery 25 h Replace unreadable labels Maintenance Label Kohler-Powered Units Servicing Air Cleaner Kohler-Powered Units Overload Protection Kohler-Powered Units Servicing Optional Spark Arrestor Kohler-Powered Units802 339-B / S-0842 Adjusting Engine Speed Kohler-Powered Units Stop engine. Reinstall wrapper− Troubleshooting TroubleshootingGenerator Power WeldingEngine − Electrical Diagram − Generator Power Guidelines Selecting EquipmentGrounding Generator To Truck Or Trailer Frame Grounding When Supplying Building Systems How Much Power Does Equipment Require?Earth ground if supplying Amperes x Volts = WattsApproximate 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 x 1000 = Starting AmperageTypical Connections To Supply Standby Power Selecting Extension Cord Use Shortest Cord Possible Current Load Watts AmperesStick Welding Procedure Weld current starts when electrode touches work- piece− Stick Welding Smaw Guidelines Electrode and Amperage Selection Chart Striking an Arc − Scratch Start TechniqueStriking an Arc − Tapping Technique Poor Weld Bead Characteristics Good Weld Bead CharacteristicsPositioning Electrode Holder Conditions That Affect Weld Bead Shape Electrode Movement During WeldingButt Joints Lap JointTee Joint Troubleshooting − Porosity Troubleshooting − Excessive SpatterWeld Test Possible Causes Corrective ActionsTroubleshooting − Incomplete Fusion Troubleshooting − Lack Of PenetrationTroubleshooting − Excessive Penetration Troubleshooting − Burn-Through Troubleshooting − Waviness Of BeadTroubleshooting − Distortion OM-945 − Parts List Main Assembly Onan Engine ShownMain Assembly Panel, Front w/Components Panel, Front w/Components -1Item Generator -1Item Service SupportContact your Distributor for Hobart Welding Products