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.
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.
ENGINE EXHAUST can kill.
• Use in open, well ventilated areas or vent exhaust outside.
MOVING PARTS can injure.
•Do not operate with doors open or guards off.
• Stop engine before servicing.
•Keep away from moving parts.
See additional warning information at front of this operator’s manual.
General Instructions
1.Blow out the welder and controls with an air hose at least once every two months. In particularly dirty loca- tions, this cleaning may be necessary once a week. Use low pressure air to avoid driving dirt into the insu- lation.
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 mini- mum setting twice each morning before starting to weld.
3.Put a drop of oil on the “Current Range Selector” shaft at least once every month.
4.When necessary, remove the sediment bowl, if so equipped, from beneath the fuel tank and clean out any accumulated dirt and water.
5.Follow the engine service schedule in this manual and the detailed maintenance and troubleshooting in the engine manufacturer’s manual.
Cooling System
The Classic 300 D is equipped with a pressure radia- tor. Keep the radiator cap tight to prevent loss of coolant. Clean and flush the cooling system periodi- cally to prevent clogging the passage and overheating the engine. When antifreeze is needed, always use the permanent type. Capacity = 9.5 qts (9.0 Ltrs.).
Bearings
This welder is equipped with a
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.
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
