Operation; Safety Precautions; General Description; For Auxiliary Power - Lincoln Electric RED-D-ARC DX450 Service Manual

B-2

SAFETY PRECAUTIONS

WARNING
Do not attempt to use this equipment until you
have thoroughly read the engine manufacturerʼs
manual supplied with your welder. It includes
important safety precautions, detailed engine
starting, operating and maintenance instructions,
and parts lists.
------------------------------------------------------------------------
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
mance.
C T
R
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 environments
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.

OPERATION

for superior welding perfor-
DX450
• 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 Ownerʼs 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
DIESEL FUEL
while fueling.
• Wipe up spilled fuel and allow
can cause fire.
fumes to clear before starting
engine.
• Do not overfill tank, fuel
expansion may cause over-
Diesel Fuel Only-Low Sulphur Fuel or Ultra Low
flow.
Sulphur in USA and Canada.
------------------------------------------------------------------------
• 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 Ownerʼs 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.
------------------------------------------------------------------------
B-2
leave unattended