Lincoln Electric IM843-C manual Maintenance

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MAINTENANCE

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MAINTENANCE

WARNING

Have qualified personnel do the maintenance work. Turn the engine off before working inside the machine. In some cases, it may be neces- sary to remove safety guards to perform required maintenance. Remove guards only when necessary and replace them when the maintenance requiring their removal is com- plete. Always use the greatest care when work- ing near moving parts.

Do not put your hands near the engine cooling blower fan. If a problem cannot be corrected by following the instructions, take the machine to the nearest Lincoln Field Service Shop.

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ELECTRIC SHOCK can kill.

• Do not touch electrically live parts or electrode with skin or wet clothing.

Insulate yourself from work and ground

Always wear dry insulating gloves.

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ENGINE EXHAUST can kill.

• Use in open, well ventilated areas or vent exhaust outside.

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MOVING PARTS can injure.

Do not operate with doors open or guards off.

• Stop engine before servicing.

Keep away from moving parts.

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See additional warning information at front of this operatorʼs manual.

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GENERAL INSTRUCTIONS

1.Blow out the welder and controls with an air hose at least once every two months. In particularly dirty locations, this cleaning may be necessary once a week. Use low pressure air to avoid driving dirt into the insulation.

2.“Current Range Selector” contacts should not be greased. To keep the contacts clean, rotate the cur- rent control through its entire range frequently. Good practice is to turn the handle from maximum to minimum setting twice each morning before start- ing to weld.

3.Put a drop of oil on the “Current Range Selector” shaft at least once every month.

4. Follow the engine service schedule in this manual and the detailed maintenance and troubleshooting in the engine manufacturerʼs manual.

COOLING SYSTEM

The CLASSIC 300D KUBOTA is equipped with a pressure radiator. Keep the radiator cap tight to pre- vent loss of coolant. Clean and flush the cooling sys- tem periodically to prevent clogging the passage and overheating the engine. When antifreeze is needed, always use the permanent type.

BEARINGS

This welder is equipped with a double-shielded ball bearing having sufficient grease to last indefinitely under normal service. Where the welder is used con- stantly or in excessively dirty locations, it may be nec- essary to add one half ounce of grease per year. A pad of grease one inch wide, one inch long, and one inch high weighs approximately one half ounce. Over- greasing is far worse than insufficient greasing.

When greasing the bearings, keep all dirt out of the area. Wipe the fittings completely clean and use clean equipment. More bearing failures are caused by dirt introduced during greasing than from insufficient grease.

COMMUTATOR AND BRUSHES

WARNING

Uncovered rotating equipment can be dangerous. Use care so your hands, hair, clothing or tools do not catch in the rotating parts. Protect yourself from particles that may be thrown out by the rotat- ing armature when stoning the commutator.

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Shifting of the commutator brushes may result in:

-Change in machine output

-Commutator damage

-Excessive brush wear

Periodically inspect the commutator, slip rings, and brushes by removing the covers. DO NOT remove or replace these covers while the machine is running.

Commutators and slip rings require little attention. However, if they are black or appear uneven, have them cleaned by an experienced maintenance man using fine sandpaper or a commutator stone. Never use emery cloth or paper for this purpose.

CLASSIC 300D KUBOTA

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Contents 300D Kubota Safety California Proposition 65 WarningsElectric Shock can kill Welding and Cutting Sparks can Cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a LʼArcThank You Table of Contents DC Current Range Model Height Width Depth WeightDescription Rated DC Output CycleGeneral Description InstallationDesign Features Rated Output Duty CyclePRE-OPERATION Installation Polarity Control and Cable Sizes PRE-OPERATION ServiceVehicle Mounting OIL Fuel5INSTALLATIONA-5 Gases from Battery can explodeBattery Acid can burn eyes and skin Operation Engine OperationEngine BREAK-IN Welder Operation Control of Welding CurrentAuxiliary Power Idler OperationStick Options AccessoriesGeneral Options TIG OptionsWire Feed Options Wire Feed Module K623-1 Provides constantMaintenance MaintenancePurging AIR from Fuel System Kubota V2203M Engine Idler MaintenanceNameplates Before doing electrical work, disconnect the bat- teryEngine Service Gfci Receptacle Testing and Reset Ting Procedure Troubleshooting HOW to USE Troubleshooting GuideAuthorized Field Service Facility Contact your local LincolnElectronic Idler Troubleshooting Guide ClosedSensing PCB Engine Repair Facility Irregular running of the engine Air mixed in the fuel system Troubleshooting Engine Protection Light not com Broken Light Bulb Diagrams Enhanced DiagramDiagrams Diagrams Diagrams Diagrams Kubota Aviso DE Keep your head out of fumes Turn power off before servicing