Fuel; Engine Cooling System; Battery Connections; Muffler Outlet Pipe - Lincoln Electric RED-D-ARC DX450 Service Manual

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FUEL

USE DIESEL FUEL ONLY-
Low Sulphur fuel or ultra low sulphur fuel in USA and
CANADA only.
WARNING
• Fill the fuel tank with clean, fresh fuel. The capacity of
the tank is 20 gals. (75.7 ltrs). When the fuel gauge
reads empty the tank contains approximately 2 gals.
(7.6ltrs.) of reserve fuel.
NOTE: A fuel shut off valve is located on the pre-fil-
ter/sediment filter. Which should be in the closed
position when the welder is not used for extend-
ed periods of time.
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ENGINE COOLING SYSTEM

WARNING
Air to cool the engine is drawn in the side and exhaust-
ed through radiator & case back. It is important that the
intake and exhaust air is not restricted. Allow a minimum
clearance of 1ft. (0.6m) from the case back and 16 in.
(406mm) from either side of the base to a vertical sur-
face.
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BATTERY CONNECTION
CAUTION
Use caution as the electrolyte is a strong acid that can
burn skin and damage eyes.
--------------------------------------------------------------------------------
The DX450 is shipped with the negative battery cable dis-
connected. Make certain that the RUN-STOP switch is in the
STOP position. Remove the two screws from the battery tray
using a screwdriver or a 3/8"(10mm) socket. Attach the neg-
ative battery cable to the negative battery terminal and tight-
en using a 1/2"(13mm) socket or wrench.
NOTE: This machine is furnished with a wet charged
battery; if unused for several months, the battery may
require a booster charge. Be careful to charge the bat-
tery with the correct polarity. (See Battery in
"Maintenance Section")

MUFFLER OUTLET PIPE

Using the clamp provided secure the outlet pipe to the
outlet tube with the pipe positioned such that it will
direct the exhaust in the desired direction. Tighten
using a 9/16"(14mm) socket or wrench.

SPARK ARRESTER

Some federal, state or local laws may require that
gasoline or diesel engines be equipped with exhaust
spark arresters when they are operated in certain loca-
tions where unarrested sparks may present a fire haz-
ard.
INSTALLATION
The standard muffler included with this welder does not
qualify as a spark arrester. When required by local reg-
ulations, a suitable spark arrester, such as the K903-1
must be installed and properly maintained.
An incorrect spark arrestor may lead to damage to
the engine or adversely affect performance.
------------------------------------------------------------------------

REMOTE CONTROL

The DX450 is equipped with a 3-pin and a 14-pin con-
nector. When in the CC-STICK, CV-WIRE OR GOUGE
modes and when a remote control is connected to the
3-pin Connector, the auto-sensing circuit automatically
switches the OUTPUT control from control at the
welder to remote control.
When in TOUCH START TIG mode and when a
Amptrol is connected to the 3-Pin Connector, the OUT-
PUT dial is used to set the maximum current range of
the CURRENT CONTROL of the Amptrol.
When in the DOWNHILL PIPE mode and when a
remote control is connected to the 3-Pin or 14-Pin
connector, the output control is used to set the max-
imum current range of the remote.
EXAMPLE: When the OUTPUT CONTROL on the
welder is set to 200 amps the current range on the
remote control will be 40-200 amps, rather than the full
40-300 amps. Any current range that is less than the
full range provides finer current resolution for more fine
tuning of the output.
In the CV-WIRE mode, if the feeder being used has a
voltage control when the wire feeder control cable is
connected to the 14-Pin Connector, the auto-sensing
circuit automatically makes OUTPUT CONTROL inac-
tive and the wire feeder voltage control active.
Otherwise, the OUTPUT CONTROL is used to preset
the voltage.
The 14-pin connector is used to directly connect a wire
feeder control cable. In the CV-WIRE mode, when the
control cable is connected to the 14-pin connector, the
auto-sensing circuit automatically makes the Output
Control inactive and the wire feeder voltage control
active.
NOTE: When a wire feeder with a built in welding
voltage control is connected to the 14-pin connec-
tor, do not connect anything to the 3-pin connec-
tor.
------------------------------------------------------------------------
DX450
WARNING
WARNING
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