Lincoln Electric DX450 specifications Operation, General Description

B-1 OPERATION B-1

SAFETY PRECAUTIONS

WARNING

Do not attempt to use this equipment until you have thoroughly read the engine manufacturer’s manual supplied with your welder. It includes important safety precautions, detailed engine starting, operating and maintenance instructions, and parts lists.

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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.

•Always operate the welder with the hinged door closed and the side panels in place.

•Read carefully the Safety Precautions page before operating this machine. Always follow these and any other safety procedures included in this manual and in the Engine Instruction Manual.

GENERAL DESCRIPTION

The DX450 is a diesel engine powered DC multi- process welding power source and AC power genera- tor. The engine drives a generator that supplies three phase power for the DC welding circuit, single phase and Three Phase power for the AC auxiliary outlets. The DC welding control system uses state of the art Chopper Technology CT for superior welding perfor-

R

mance.

The DX450 is fitted with a selectable VRD(Voltage Reduction Device). The VRD operates in the CC-Stick mode reducing the OCV to <13 volts, increasing oper- ator safety when welding is performed in environ- ments with increased hazard of electric shock such as wet areas and hot, humid sweaty conditions.

FOR AUXILIARY POWER:

Start the engine and set the IDLER control switch to the desired operating mode. Full power is available regardless of the welding control settings providing no welding current is being drawn.

ENGINE OPERATION

Before Starting the Engine:

•Be sure the machine is on a level surface.

•Open side engine door and remove the engine oil dipstick and wipe it with a clean cloth. Reinsert the dipstick and check the level on the dipstick.

•Add oil (if necessary) to bring the level up to the full mark. Do not overfill. Close engine door.

•Check radiator for proper coolant level. (Fill if nec- essary).

•See Engine Owner’s Manual for specific oil and coolant recommendations.

WARNING

ADD FUEL

• Stop engine while fueling.

• Do not smoke when fueling.

•Keep sparks and flame away from tank.

•Do not leave unattended while fueling.

DIESEL FUEL • Wipe up spilled fuel and allow can cause fire. fumes to clear before starting

engine.

•Do not overfill tank, fuel expansion may cause over-

flow.

Diesel Fuel Only-Low Sulphur Fuel or Ultra Low Sulphur in USA and Canada.

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•Remove the fuel tank cap.

•Fill the tank. DO NOT FILL THE TANK TO THE POINT OF OVERFLOW.

•Replace the fuel cap and tighten securely.

•See Engine Owner’s Manual for specific fuel recom- mendations.

BREAK-IN PERIOD

The engine will use a small amount of oil during its “break-in” period. The break-in period is about 50 run- ning hours. Check the oil every four hours during break-in.

Change the oil after the first 50 hours of operation and every 200 hours thereafter. Change the oil filter at each oil change.

CAUTION

During break-in, subject the Welder to moderate loads. Avoid long periods running at idle. Before stopping the engine, remove all loads and allow the engine to cool several minutes.

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DX450 (RED-D-ARC)