IM962-B
January, 2010
RED-D-ARC
DX450
For use with machines having Code Numbers:
11512, 11561
RETURN TO MAIN MENU
OPERATOR’S MANUAL
Red-D-Arc Spec-Built Welding Equipment
This RED-D-ARC welder is built to RED-D-ARC Extreme Duty
design specifications by Lincoln Electric.
Safety Depends on You
This welder is designed and built with safety in mind.
However, your overall safety can be increased by proper installation
... and thoughtful operation on your part.
DO NOT INSTALL, OPERATE OR REPAIR THIS EQUIPMENT
WITHOUT READING THIS MANUAL AND THE SAFETY
PRECAUTIONS CONTAINED THROUGHOUT.
And, most importantly, think before you act and be careful.
1-800-245-3660
North America’s Largest Fleet of Welding Equipment
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SAFETY
ARC RAYS can burn.
ELECTRIC SHOCK can
4.a. Use a shield with the proper filter and cover
plates to protect your eyes from sparks and
the rays of the arc when welding or observing
open arc welding. Headshield and filter lens
should conform to ANSI Z87. I standards.
kill.
3.a. The electrode and work (or ground) circuits
are electrically “hot” when the welder is on.
Do not touch these “hot” parts with your bare
skin or wet clothing. Wear dry, hole-free
gloves to insulate hands.
4.b. Use suitable clothing made from durable flame-resistant
material to protect your skin and that of your helpers from
the arc rays.
3.b. Insulate yourself from work and ground using dry insulation.
Make certain the insulation is large enough to cover your full
area of physical contact with work and ground.
4.c. Protect other nearby personnel with suitable, non-flammable
screening and/or warn them not to watch the arc nor expose
themselves to the arc rays or to hot spatter or metal.
In addition to the normal safety precautions, if welding
must be performed under electrically hazardous
conditions (in damp locations or while wearing wet
clothing; on metal structures such as floors, gratings or
scaffolds; when in cramped positions such as sitting,
kneeling or lying, if there is a high risk of unavoidable or
accidental contact with the workpiece or ground) use
the following equipment:
FUMES AND GASES
can be dangerous.
5.a. Welding may produce fumes and gases
hazardous to health. Avoid breathing these
• Semiautomatic DC Constant Voltage (Wire) Welder.
• DC Manual (Stick) Welder.
fumes and gases. When welding, keep
your head out of the fume. Use enough
ventilation and/or exhaust at the arc to keep
• AC Welder with Reduced Voltage Control.
fumes and gases away from the breathing zone. When
welding with electrodes which require special
ventilation such as stainless or hard facing (see
instructions on container or MSDS) or on lead or
cadmium plated steel and other metals or coatings
which produce highly toxic fumes, keep exposure as
low as possible and within applicable OSHA PEL and
ACGIH TLV limits using local exhaust or mechanical
ventilation. In confined spaces or in some circum-
stances, outdoors, a respirator may be required.
Additional precautions are also required when welding
on galvanized steel.
3.c. In semiautomatic or automatic wire welding, the electrode,
electrode reel, welding head, nozzle or semiautomatic
welding gun are also electrically “hot”.
3.d. Always be sure the work cable makes a good electrical
connection with the metal being welded. The connection
should be as close as possible to the area being welded.
3.e. Ground the work or metal to be welded to a good electrical
(earth) ground.
3.f. Maintain the electrode holder, work clamp, welding cable and
welding machine in good, safe operating condition. Replace
damaged insulation.
5. b. The operation of welding fume control equipment is affected
by various factors including proper use and positioning of
the equipment, maintenance of the equipment and the spe-
cific welding procedure and application involved. Worker
exposure level should be checked upon installation and
periodically thereafter to be certain it is within applicable
OSHA PEL and ACGIH TLV limits.
3.g. Never dip the electrode in water for cooling.
3.h. Never simultaneously touch electrically “hot” parts of
electrode holders connected to two welders because voltage
between the two can be the total of the open circuit voltage
of both welders.
5.c. Do not weld in locations near chlorinated hydrocarbon vapors
coming from degreasing, cleaning or spraying operations.
The heat and rays of the arc can react with solvent vapors to
form phosgene, a highly toxic gas, and other irritating prod-
ucts.
3.i. When working above floor level, use a safety belt to protect
yourself from a fall should you get a shock.
3.j. Also see Items 6.c. and 8.
5.d. Shielding gases used for arc welding can displace air and
cause injury or death. Always use enough ventilation,
especially in confined areas, to insure breathing air is safe.
5.e. Read and understand the manufacturer’s instructions for this
equipment and the consumables to be used, including the
material safety data sheet (MSDS) and follow your
employer’s safety practices. MSDS forms are available from
your welding distributor or from the manufacturer.
5.f. Also see item 1.b.
Jan ‘09
DX450 (RED-D-ARC)
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SAFETY
WELDING and CUTTING
CYLINDER may explode
if damaged.
SPARKS can
cause fire or explosion.
7.a. Use only compressed gas cylinders
containing the correct shielding gas for the
6.a. Remove fire hazards from the welding area.
If this is not possible, cover them to prevent
the welding sparks from starting a fire.
process used and properly operating
regulators designed for the gas and
Remember that welding sparks and hot
materials from welding can easily go through small cracks
and openings to adjacent areas. Avoid welding near
hydraulic lines. Have a fire extinguisher readily available.
pressure used. All hoses, fittings, etc. should be suitable for
the application and maintained in good condition.
7.b. Always keep cylinders in an upright position securely
chained to an undercarriage or fixed support.
6.b. Where compressed gases are to be used at the job site,
special precautions should be used to prevent hazardous
situations. Refer to “Safety in Welding and Cutting” (ANSI
Standard Z49.1) and the operating information for the
equipment being used.
7.c. Cylinders should be located:
• Away from areas where they may be struck or subjected to
physical damage.
• A safe distance from arc welding or cutting operations and
any other source of heat, sparks, or flame.
6.c. When not welding, make certain no part of the electrode
circuit is touching the work or ground. Accidental contact
can cause overheating and create a fire hazard.
7.d. Never allow the electrode, electrode holder or any other
electrically “hot” parts to touch a cylinder.
6.d. Do not heat, cut or weld tanks, drums or containers until the
proper steps have been taken to insure that such procedures
will not cause flammable or toxic vapors from substances
inside. They can cause an explosion even though they have
been “cleaned”. For information, purchase “Recommended
Safe Practices for the Preparation for Welding and Cutting of
Containers and Piping That Have Held Hazardous
Substances”, AWS F4.1 from the American Welding Society
(see address above).
7.e. Keep your head and face away from the cylinder valve outlet
when opening the cylinder valve.
7.f. Valve protection caps should always be in place and hand
tight except when the cylinder is in use or connected for
use.
7.g. Read and follow the instructions on compressed gas
cylinders, associated equipment, and CGA publication P-l,
“Precautions for Safe Handling of Compressed Gases in
Cylinders,” available from the Compressed Gas Association
1235 Jefferson Davis Highway, Arlington, VA 22202.
6.e. Vent hollow castings or containers before heating, cutting or
welding. They may explode.
6.f. Sparks and spatter are thrown from the welding arc. Wear oil
free protective garments such as leather gloves, heavy shirt,
cuffless trousers, high shoes and a cap over your hair. Wear
ear plugs when welding out of position or in confined places.
Always wear safety glasses with side shields when in a
welding area.
FOR ELECTRICALLY
powered equipment.
8.a. Turn off input power using the disconnect
switch at the fuse box before working on
the equipment.
6.g. Connect the work cable to the work as close to the welding
area as practical. Work cables connected to the building
framework or other locations away from the welding area
increase the possibility of the welding current passing
through lifting chains, crane cables or other alternate cir-
cuits. This can create fire hazards or overheat lifting chains
or cables until they fail.
8.b. Install equipment in accordance with the U.S. National
Electrical Code, all local codes and the manufacturer’s
recommendations.
8.c. Ground the equipment in accordance with the U.S. National
Electrical Code and the manufacturer’s recommendations.
6.h. Also see item 1.c.
6.I. Read and follow NFPA 51B “ Standard for Fire Prevention
During Welding, Cutting and Other Hot Work”, available
from NFPA, 1 Batterymarch Park, PO box 9101, Quincy, Ma
022690-9101.
6.j. Do not use a welding power source for pipe thawing.
Jan ‘09
DX450 (RED-D-ARC)
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SAFETY
PRÉCAUTIONS DE SÛRETÉ
6. Eloigner les matériaux inflammables ou les recouvrir afin de
prévenir tout risque d’incendie dû aux étincelles.
Pour votre propre protection lire et observer toutes les instructions
et les précautions de sûreté specifiques qui parraissent dans ce
manuel aussi bien que les précautions de sûreté générales suiv-
antes:
7. Quand on ne soude pas, poser la pince à une endroit isolé de
la masse. Un court-circuit accidental peut provoquer un
échauffement et un risque d’incendie.
Sûreté Pour Soudage A L’Arc
8. S’assurer que la masse est connectée le plus prés possible
de la zone de travail qu’il est pratique de le faire. Si on place
la masse sur la charpente de la construction ou d’autres
endroits éloignés de la zone de travail, on augmente le risque
de voir passer le courant de soudage par les chaines de lev-
age, câbles de grue, ou autres circuits. Cela peut provoquer
des risques d’incendie ou d’echauffement des chaines et des
câbles jusqu’à ce qu’ils se rompent.
1. Protegez-vous contre la secousse électrique:
a. Les circuits à l’électrode et à la piéce sont sous tension
quand la machine à souder est en marche. Eviter toujours
tout contact entre les parties sous tension et la peau nue
ou les vétements mouillés. Porter des gants secs et sans
trous pour isoler les mains.
b. Faire trés attention de bien s’isoler de la masse quand on
soude dans des endroits humides, ou sur un plancher
metallique ou des grilles metalliques, principalement dans
les positions assis ou couché pour lesquelles une grande
partie du corps peut être en contact avec la masse.
c. Maintenir le porte-électrode, la pince de masse, le câble
de soudage et la machine à souder en bon et sûr état
defonctionnement.
9. Assurer une ventilation suffisante dans la zone de soudage.
Ceci est particuliérement important pour le soudage de tôles
galvanisées plombées, ou cadmiées ou tout autre métal qui
produit des fumeés toxiques.
10. Ne pas souder en présence de vapeurs de chlore provenant
d’opérations de dégraissage, nettoyage ou pistolage. La
chaleur ou les rayons de l’arc peuvent réagir avec les vapeurs
du solvant pour produire du phosgéne (gas fortement toxique)
ou autres produits irritants.
d.Ne jamais plonger le porte-électrode dans l’eau pour le
refroidir.
e. Ne jamais toucher simultanément les parties sous tension
des porte-électrodes connectés à deux machines à souder
parce que la tension entre les deux pinces peut être le
total de la tension à vide des deux machines.
11. Pour obtenir de plus amples renseignements sur la sûreté,
voir le code “Code for safety in welding and cutting” CSA
Standard W 117.2-1974.
f. Si on utilise la machine à souder comme une source de
courant pour soudage semi-automatique, ces precautions
pour le porte-électrode s’applicuent aussi au pistolet de
soudage.
2. Dans le cas de travail au dessus du niveau du sol, se protéger
contre les chutes dans le cas ou on recoit un choc. Ne jamais
enrouler le câble-électrode autour de n’importe quelle partie
du corps.
PRÉCAUTIONS DE SÛRETÉ POUR
LES MACHINES À SOUDER À
TRANSFORMATEUR ET À
REDRESSEUR
3. Un coup d’arc peut être plus sévère qu’un coup de soliel,
donc:
a. Utiliser un bon masque avec un verre filtrant approprié
ainsi qu’un verre blanc afin de se protéger les yeux du ray-
onnement de l’arc et des projections quand on soude ou
quand on regarde l’arc.
1. Relier à la terre le chassis du poste conformement au code de
l’électricité et aux recommendations du fabricant. Le dispositif
de montage ou la piece à souder doit être branché à une
bonne mise à la terre.
b. Porter des vêtements convenables afin de protéger la
peau de soudeur et des aides contre le rayonnement de
l‘arc.
2. Autant que possible, I’installation et l’entretien du poste seront
effectués par un électricien qualifié.
c. Protéger l’autre personnel travaillant à proximité au
soudage à l’aide d’écrans appropriés et non-inflammables.
3. Avant de faires des travaux à l’interieur de poste, la debranch-
er à l’interrupteur à la boite de fusibles.
4. Des gouttes de laitier en fusion sont émises de l’arc de
soudage. Se protéger avec des vêtements de protection libres
de l’huile, tels que les gants en cuir, chemise épaisse, pan-
talons sans revers, et chaussures montantes.
4. Garder tous les couvercles et dispositifs de sûreté à leur
place.
5. Toujours porter des lunettes de sécurité dans la zone de
soudage. Utiliser des lunettes avec écrans lateraux dans les
zones où l’on pique le laitier.
Mar. ‘93
DX450 (RED-D-ARC)
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for selecting one of our QUALITY products. We want you to take
pride in operating this product ••• as much pride as we have in
bringing this product to you!
Thank You
CUSTOMER ASSISTANCE POLICY
The business of our company is manufacturing and selling high quality welding equipment. Our challenge is to
meet the needs of our customers and to exceed their expectations. On occasion, purchasers may ask us for
advice or information about their use of our products. We respond to our customers based on the best informa-
tion in our possession at that time. We are not in a position to warrant or guarantee such advice, and assume no
liability, with respect to such information or advice. We expressly disclaim any warranty of any kind, including any
warranty of fitness for any customer’s particular purpose, with respect to such information or advice. As a matter
of practical consideration, we also cannot assume any responsibility for updating or correcting any such informa-
tion or advice once it has been given, nor does the provision of information or advice create, expand or alter any
warranty with respect to the sale of our products.
We are a responsive manufacturer, but the selection and use of specific products sold by us is solely within the
control of, and remains the sole responsibility of the customer. Many variables beyond our control affect the
results obtained in applying these types of fabrication methods and service requirements.
Subject to Change – This information is accurate to the best of our knowledge at the time of printing.
Please Examine Carton and Equipment For Damage Immediately
When this equipment is shipped, title passes to the purchaser upon receipt by the carrier. Consequently, Claims
for material damaged in shipment must be made by the purchaser against the transportation company at the
time the shipment is received.
Please record your equipment identification information below for future reference. This information can be
found on your machine nameplate.
Product _________________________________________________________________________________
Model Number ___________________________________________________________________________
Code Number or Date Code (if available)______________________________________________________
Serial Number (if available)__________________________________________________________________
Date Purchased___________________________________________________________________________
Where Purchased_________________________________________________________________________
Whenever you request replacement parts or information on this equipment, always supply the information you
have recorded above.
Read this Operators Manual completely before attempting to use this equipment. Save this manual and keep it
handy for quick reference. Pay particular attention to the safety instructions we have provided for your protection.
The level of seriousness to be applied to each is explained below:
WARNING
This statement appears where the information must be followed exactly to avoid serious personal injury or loss of life.
CAUTION
This statement appears where the information must be followed to avoid minor personal injury or damage to this equipment.
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TABLE OF CONTENTS
Page
Installation.......................................................................................................................Section A
Technical Specifications.......................................................................................................A-1
Safety Precautions........................................................................................................A-2
VRD (Voltage Reduction Device)..................................................................................A-2
Location and Ventilation................................................................................................A-2
Stacking ........................................................................................................................A-2
Angle of Operation ........................................................................................................A-2
Lifting.............................................................................................................................A-2
High Altitude Operation.................................................................................................A-3
High Temperature Operation ........................................................................................A-3
Cold Weather Operation ......................................................................................................A-3
Towing..................................................................................................................................A-3
Vehicle Mounting..................................................................................................................A-3
Pre-Operation Engine Service..............................................................................................A-3
Oil..................................................................................................................................A-3
Fuel ...............................................................................................................................A-4
Engine Coolant..............................................................................................................A-4
Battery Connections......................................................................................................A-4
Muffler Outlet Pipe ........................................................................................................A-4
Spark Arrester...............................................................................................................A-4
Remote Control.............................................................................................................A-4
Electrical Connections..........................................................................................................A-5
Machine Grounding..............................................................................................................A-5
Welding Terminals................................................................................................................A-5
Welding Output Cables ........................................................................................................A-5
Cable Installation..................................................................................................................A-5
Auxiliary Power Receptacles and Plugs...............................................................................A-6
Standby Power Connections................................................................................................A-6
Premises Wiring ...................................................................................................................A-7
Connection of Lincoln Electric Wire Feeders................................................................A-8, A-9
________________________________________________________________________________
Operation.........................................................................................................................Section B
Safety Precautions ..............................................................................................................B-1
General Description..............................................................................................................B-1
For Auxiliary Power ..............................................................................................................B-1
Engine Operation..................................................................................................................B-1
Add Fuel...............................................................................................................................B-1
Break in Period.....................................................................................................................B-1
Welder Controls.............................................................................................................B-2,B-3
Engine Controls....................................................................................................................B-4
Starting and Stopping the Engine...........................................................................B-4,B-5
Welding Operation................................................................................................................B-5
Duty Cycle and Electrode Information...........................................................................B-5
Constant Current (Stick) Welding.........................................................................................B-5
Downhill Pipe (Stick) Welding................................................................................B-5, B-6
Tig Welding ...................................................................................................................B-6
Typical Current Ranges for Tungsten Electrodes .........................................................B-6
Wire Welding-CV...........................................................................................................B-7
Arc Gouging ..................................................................................................................B-7
Auxiliary Power.....................................................................................................................B-7
Simultaneous Welding and Power Loads .....................................................................B-7
Extension Cord Recommendations...............................................................................B-7
________________________________________________________________________________
Accessories.....................................................................................................Section C
Field Installed Options / Accessories ...............................................................................C-1
________________________________________________________________________________
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TABLE OF CONTENTS
Maintenance......................................................................................................Section D
Safety Precautions ................................................................................................D-1
Routine Maintenance ............................................................................................D-1
Engine Service Items.............................................................................................D-1
Engine Oil Change..........................................................................................D-2
Engine Oil Filter Change.................................................................................D-2
Air Cleaner .....................................................................................................D-2
Service Instructions And Installation Tips for Engine Air Filter .......................D-3
Cooling System .....................................................................................................D-4
Fan Belt...........................................................................................................D-4
Fuel.................................................................................................................D-4
Bleeding the Fuel System...............................................................................D-4
Fuel Filter........................................................................................................D-5
Engine Adjustment..........................................................................................D-5
Battery Maintenance .......................................................................................D-5
Servicing Optional Spark Arrestor ...................................................................D-5
Welder / Generator Maintenance ........................................................................D-6
Storage ...........................................................................................................D-6
Cleaning..........................................................................................................D-6
Brush Removal and Replacement ..................................................................D-6
________________________________________________________________________
Troubleshooting..............................................................................................Section E
How to Use Troubleshooting Guide.......................................................................E-1
Troubleshooting Guide.............................................................................E-2 thru E-6
________________________________________________________________________
Connection Diagrams, Wiring Diagrams and Dimension Print...................Section F
________________________________________________________________________
Parts List.....................................................................................................P-582 Series
________________________________________________________________________
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A-1
A-1
INSTALLATION
TECHNICAL SPECIFICATIONS - DX450 (K2712-1)
INPUT - DIESEL ENGINE
Make/Model
Description
Speed (RPM)
Displacement
cu. in. (ltrs.)
Starting
System
Capacities
4 cylinder
35.4 HP
1800 RPM
148.5(2.4)
12VDC Battery &
starter
Fuel: 20 gal.
(75 L)
High Idle 1880
Full Load 1800
Low Idle 1400
KUBOTA
2403-M
Bore x Stroke inch (mm) (Group 34; 650 Oil: 10Qts. (9.5L)
3.43” X 4.03”
(87.1 x 102.4mm)
cold crank amps)
40 Amp
Radiator Coolant:
8.0 Qts. (7.6L)
Alternator
RATED OUTPUT @ 104° F (40° C) - WELDER
Welding Process
Welding Output
Current/Voltage/Duty Cycle
400A / 36V / 100%
Output Range
Max. Weld OCV
@Rated Load RPM
DC Constant Current
450A / 32V / 100%
30 TO 500 AMPS
60 Volts2
DC Pipe Current
Touch-Start™TIG
DC Constant Voltage
300A / 32V / 100%
250A / 30V / 100%
400A / 36V / 100%
450A / 32V / 100%
400A / 36V / 100%
40 TO 300 AMPS
20 TO 250 AMPS
14 TO 36 VOLTS
90 TO 450 AMPS
Arc Gouging
.
RATED OUTPUT @ 104° F (40° C) - GENERATOR
Auxiliary Power 1
12,000 Watts Peak, / 11,000 Watts Continuous, 60 Hz 120/240 Volts Single Phase
19,000 Watts Peak, / 17,000 Watts Continuous, 60 Hz, 240 Volts 3-Phase
ENGINE
LUBRICATION
Full Pressure
with Full Flow Filter
EMISSIONS
EPA Tier 4 Interim
Compliant
FUEL SYSTEM
GOVERNOR
Electronic
Mechanical Fuel Pump, Auto air bleed
system, Electric shutoff solenoid, Indirect fuel injector.
AIR CLEANER
ENGINE IDLER
MUFFLER
Low noise Muffler:
Top outlet can be rotated.
Made from long life, aluminized steel.
ENGINE PROTECTION
Shutdown on low oil
pressure & high engine
coolant temperature
Single Element
Automatic Idler
MACHINE SPECIFICATIONS
RECEPTACLES
AUXILIARY POWER CIRCUIT BREAKER OTHER CIRCUIT BREAKERS
(2)120VAC Duplex (5-20R)GFCI Protected
(1) 120/240VAC Dual Voltage
Full KVA (NEMA SSR-50R)
Two 20AMP for Two Duplex Receptacle
(1) 50AMP for Dual Voltage and for
3-Phase (3-pole)
10AMP for Battery Charging Circuit
10AMP for 42V Wire Feeder Power
(1) 240VAC 3-Phase (15-50R)
PHYSICAL DIMENSIONS
HEIGHT
35.94* in.
913 mm
WIDTH
25.30 in
643 mm
DEPTH
WEIGHT
60.00 in.
1524 mm
1245lbs. (565kg.)
LIFT BAIL WEIGHT RATING 2000 LBS. (907KG.) MAXIMUM
1. Output rating in watts is equivalent to volt-amperes at unity power factor. Output voltage is within 10% at all loads up to
rated capacity. When welding, available auxiliary power will be reduced.
* To Top of enclosure, add 10.68”(271.3mm) to top of exhaust pipe. Add 6.67”(169.4mm) to top of Lift Bail.
2. Reduced to less than 32V in the CC-stick Mode when VRD (VOLTAGE REDUCTION DEVICE) is on.
DX450 (RED-D-ARC)
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A-2
A-2
INSTALLATION
SAFETY PRECAUTIONS
FIGURE A.1
WARNING
(VRD)-VOLTAGE REDUCTION DEVICE
SWITCH IS LOCATED IN THIS AREA.
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.
------------------------------------------------------------------------
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.
REMOVE 4 FRONT PANEL
SCREWS TO ACCESS
(VRD) SWITCH
------------------------------------------------------------------------
MOVING PARTS can injure.
• Do not operate with doors open or
guards off.
LOCATION AND VENTILATION
• Stop engine before servicing.
• Keep away from moving parts.
------------------------------------------------------------------------
See additional warning information at
The welder should be located to provide an unrestrict-
ed flow of clean, cool air to the cooling air inlets and to
avoid restricting the cooling air outlets. Also, locate
the welder so that the engine exhaust fumes are prop-
erly vented to an outside area.
front of this operator’s manual.
Only qualified personnel should install,
use, or service this equipment.
STACKING
DX450 machines cannot be stacked.
VRD (VOLTAGE REDUCTION DEVICE)
ANGLE OF OPERATION
The VRD feature provides additional safety in the CC-Stick
mode especially in an environment with a higher risk of
electric shock such as wet areas and hot humid sweaty
conditions.
Engines are designed to run in the level condition
which is where the optimum performance is achieved.
The maximum angle of continuous operation is 25
degrees in all directions, 35 degrees Intermittent (less
than 10 minutes continuous) in all directions. If the
engine is to be operated at an angle, provisions must
be made for checking and maintaining the oil level at
the normal (FULL) oil capacity in the crankcase.
The VRD reduces the OCV (Open Circuit Voltage) at the
welding output terminals while not welding to less than 13V
DC when the resistance of the output circuit is above 200
(ohms).
The VRD requires that the welding cable connections be
kept in good electrical condition because poor connections
will contribute to poor starting. Having good electrical con-
nections also limits the possibility of other safety issues
such as heat-generated damage, burns and fires.
When operating the welder at an angle, the effective
fuel capacity will be slightly less than the amount
specified.
LIFTING
The DX450 weighs approximately 1391lbs. (631kg.)
with a full tank of fuel, 1245lbs. (565kg) less fuel. A lift
bail is mounted to the machine and should always be
used when lifting the machine.
The machine is shipped with the VRD switch in the “Off”
position. To turn it “On” or “Off”.
• Turn the engine “Off”.
• Disconnect the negative battery cable.
• Lower the control panel by removing 4 front
panel screws. (See Figure A.1)
• Place the VRD switch in the “On” or “Off” position.
(See Figure A.1)
With the VRD switch in the “On” position, the VRD lights
are enabled.
DX450 (RED-D-ARC)
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A-3
A-3
INSTALLATION
1. Design capacity of trailer vs. weight of Lincoln equipment and
likely additional attachments.
WARNING
• Lift only with equipment of adequate
lifting capacity.
2. Proper support of, and attachment to, the base of the welding
equipment so there will be no undue stress to the framework.
3. Proper placement of the equipment on the trailer to insure
stability side to side and front to back when being moved and
when standing by itself while being operated or serviced.
4. Typical conditions of use, i.e., travel speed; roughness of sur-
face on which the trailer will be operated; environmental con-
ditions; like maintenance.
• Be sure machine is stable when lift-
ing.
• Do not lift this machine using lift bail
if it is equipped with a gas cylinder.
FALLING
• Do not lift machine if lift bail is
EQUIPMENT can damaged.
cause injury. • Do not operate machine while sus-
pended from lift bail.
• DO NOT EXCEED MAXIMUM LIFT BAIL WEIGHT RAT-
ING. ( SEE TECHNICAL SPECIFICATIONS PAGE)
(1)
5. Conformance with federal, state and local laws.
(1)
Consult applicable federal, state and local laws regarding specific require-
ments for use on public highways.
VEHICLE MOUNTING
--------------------------------------------------------------------------------
WARNING
Improperly mounted concentrated loads may
cause unstable vehicle handling and tires or other
components to fail.
HIGH ALTITUDE OPERATION
At higher altitudes, output derating may be necessary. For
maximum rating, derate the machine 1.0% for every 2000 ft.
(610m) up to 6000 ft. (1828m) and 2.0% for every 2000 ft.
(610m) over 6000 ft. (1828m). Due to new EPA and other
local emissions regulations, modifications to the engine for
high altitude are restricted within the United States. If
required contact an authorized Perkins engine field service
shop to determine if any adjustments can be made for oper-
ation in higher elevations.
• Only transport this Equipment on serviceable
vehicles which are rated and designed for such
loads.
• Distribute, balance and secure loads so vehicle
is stable under conditions of use.
• Do not exceed maximum rated loads for compo-
nents such as suspension, axles and tires.
• Mount equipment base to metal bed or frame of
vehicle.
• Follow vehicle manufacturer’s instructions.
------------------------------------------------------------------------
HIGH TEMPERATURE OPERATION
At temperatures above 104°F(40°C), Welder output derating
is necessary. For maximum output ratings, derate the
welder output 2 volts for every 18°F(10°C) above
104°F(40°C).
PRE-OPERATION ENGINE SERVICE
READ the engine operating and maintenance instruc-
tions supplied with this machine.
Cold weather starting:
With a fully charged battery and the proper oil, the
engine should start satisfactorily down to -15°F(-
26C°). If the engine must be frequently started at or
below 0°F (-18°C), it may be desirable to install cold-
starting aides. The use of No. 1D diesel fuel is recom-
mended in place of No. 2D at temperatures below
23°F (-5°C). Allow the engine to warm up before
applying a load or switching to high idle.
WARNING
• Stop engine and allow to cool before fueling.
• Do not smoke when fueling.
• Fill fuel tank at a moderate rate and do not over-
fill.
• Wipe up spilled fuel and allow fumes to clear
before starting engine.
• Keep sparks and flame away from tank.
------------------------------------------------------------------------
Note: Extreme cold weather starting may require
longer glow plug operation.
WARNING
Under no conditions should ether or other starting
fluids be used with this engine!
------------------------------------------------------------------------
TOWING
Use a recommended trailer for use with this equipment for road,
in-plant and yard towing by a vehicle(1). If the user adapts a
non-Lincoln trailer, he must assume responsibility that the
method of attachment and usage does not result in a safety
hazard or damage the welding equipment. Some of the factors
to be considered are as follows:
OIL
The DX450 is shipped with the engine crankcase filled with high
quality SAE 10W-30 Oil that meets classification CG-4 or CH-4 for
diesel engines. Check the oil level before starting the engine. If it is
not up to the full mark on the dip stick, add oil as required. Check
the oil level every four hours of running time during the first 50 run-
ning hours. Refer to the engine Operator’s Manual for specific oil
recommendations and break-in information. The oil change interval
is dependent on the quality of the oil and the operating environ-
ment. Refer to the Engine Operator’s Manual for more details on
the proper service and maintenance intervals.
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A-4
A-4
INSTALLATION
The standard muffler included with this welder does
not qualify as a spark arrester. When required by local
regulations, a suitable spark arrester, such as the
K903-1 must be installed and properly maintained.
FUEL
USE DIESEL FUEL ONLY-
Low Sulphur fuel or ultra low sulphur fuel in USA and
CANADA only.
WARNING
WARNING
An incorrect spark arrestor may lead to damage to
the engine or adversely affect performance.
------------------------------------------------------------------------
REMOTE CONTROL
• 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.
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 con-
nected to the 3-pin Connector, the auto-sensing circuit
automatically switches the OUTPUT control from con-
trol at the welder to remote control.
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.
------------------------------------------------------------------------
ENGINE COOLING SYSTEM
When in TOUCH START TIG mode and when a
Amptrol is connected to the 3-Pin Connector, the
OUTPUT dial is used to set the maximum current
range of the CURRENT CONTROL of the Amptrol.
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 mini-
mum clearance of 1ft. (0.6m) from the case back and 16
in. (406mm) from either side of the base to a vertical
surface.
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.
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
negative battery cable to the negative battery terminal and
tighten using a 1/2"(13mm) socket or wrench.
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.
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”)
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 con-
nector, the auto-sensing circuit automatically makes
the Output Control inactive and the wire feeder volt-
age control active.
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.
WARNING
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.
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
locations where unarrested sparks may present a fire
hazard.
------------------------------------------------------------------------
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A-5
A-5
INSTALLATION
WELDING OUTPUT CABLES
ELECTRICAL CONNECTIONS
With the engine off connect the electrode and work
cables to the output studs. The welding process dic-
tates the polarity of the electrode cable. These con-
nections should be checked periodically and tightened
with a 3/4"(19mm) wrench.
MACHINE GROUNDING
Because this portable engine driven welder creates its
own power, it is not necessary to connect its frame to
an earth ground, unless the machine is connected to
premises wiring (home, shop, etc.)
Table A.1 lists recommended cable sizes and lengths
for rated current and duty cycle. Length refers to the
distance from the welder to the work and back to the
welder. Cable diameters are increased for long cable
lengths to reduce voltage drops.
To prevent dangerous electric shock, other equipment
to which this engine driven welder supplies power
must:
TOTAL COMBINED LENGTH OF
ELECTRODE AND WORK CABLES
WARNING
• Be grounded to the frame of the welder using a
grounded type plug or be double insulated.
• Do not ground the machine to a pipe that carries
explosive or combustible material.
Cable Size for
Cable Length
400 Amps
60% Duty Cycle
2 / 0 AWG
0-100 Ft. (0-30 meters)
------------------------------------------------------------------------
2 / 0 AWG
3 / 0 AWG
100-150 Ft. (30-46 meters)
150-200 Ft. (46-61 meters)
When this welder is mounted on a truck or trailer, its
frame must be electrically bonded to the metal frame
of the vehicle. Use a #8 or larger copper wire connect-
ed between the machine grounding stud and the
frame of the vehicle. When this engine driven welder
is connected to premises wiring such as that in a
home or shop, its frame must be connected to the
system earth ground. See further connection instruc-
tions in the section entitled "Standby Power
Connections" as well as the article on grounding in the
latest National Electrical Code and the local code.
TABLE A.1
CABLE INSTALLATION
Install the welding cables to your DX450 as follows.
1. The engine must be OFF to install welding cables.
2. Remove the flanged nuts from the output terminals
.
3. Connect the electrode holder and work cables to
the weld output terminals. The terminals are identi-
fied on the case front.
In general, if the machine is to be grounded, it should
be connected with a #8 or larger copper wire to a solid
earth ground such as a metal water pipe going into
the ground for at least ten feet and having no insulat-
ed joints, or to the metal framework of a building
which has been effectively grounded.
4. Tighten the flanged nuts securely.
The National Electrical Code lists a number of alter-
nate means of grounding electrical equipment. A
machine grounding stud marked with the symbol
is provided on the front of the welder.
5. Be certain that the metal piece you are welding (the
“work”) is properly connected to the work clamp and
cable.
6. Check and tighten the connections periodically.
WELDING TERMINALS
The DX450 is equipped with a toggle switch for select-
ing "hot" welding terminal when in the "WELD TERMI-
NALS ON" position or "cold" welding terminal when in
the "REMOTELY CONTROLLED" position.
CAUTION
• Loose connections will cause the output termi-
nals to overheat. The terminals may eventually
melt.
• Do not cross the welding cables at the output ter-
minal connection. Keep the cables isolated and
separate from one another.
------------------------------------------------------------------------
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A-6
A-6
INSTALLATION
STANDBY POWER CONNECTIONS
AUXILIARY POWER RECEPTACLES
The DX450 is suitable for temporary, standby or
emergency power using the engine manufacturer’s
recommended maintenance schedule.
Start the engine and set the “IDLER” control switch to the
“High Idle” mode. Voltage is now correct at the receptacles
for auxiliary power. This must be done before a tripped
GFCI module can be reset properly. See the MAINTE-
NANCE section for more detailed information on testing
and resetting the GFCI module.
The DX450 can be permanently installed as a standby
power unit for 240 VAC, 3 wire, single phase, 50 amp
service. Connections must be made by a licensed
electrician who can determine how the 120/240 VAC
power can be adapted to the particular installation and
comply with all applicable electrical codes.
The auxiliary power of the DX450 consists of two 20 Amp-
120 VAC (5-20R) duplex receptacles with GFCI protection,
one 50 Amp 120/240 VAC (SS2-50R) receptacle and one
50 Amp 240VAC Three-Phase (15-50R) receptacle.
• Install the double-pole, double-throw switch
between the power company meter and the premis-
es disconnect. Switch rating must be the same or
greater than the customer’s premises disconnect
and service over current protection.
The auxiliary power capacity is 12,000 watts Peak, 11,000
Watts Continuous of 60 Hz, single phase power. The auxil-
iary power capacity rating in watts is equivalent to volt-
amperes at unity power factor. The max permissible current
of the 240 VAC output is 50amps.
• Take necessary steps to assure load is limited to
the capacity of the generator by installing a 50 amp,
240 VAC double pole circuit breaker. Maximum
rated load for each leg of the 240 VAC auxiliary is
50 amperes. Loading above the rated output will
reduce output voltage below the allowable - 10% of
rated voltage which may damage appliances or
other motor-driven equipment and may result in
overheating of the engine and/or alternator wind-
ings.
The 240 VAC output can be split to provide two separate
120 VAC outputs with a max permissible current of 50
Amps per output to two separate 120 VAC branch circuits
(these circuits cannot be paralleled). Output voltage is with-
in 10% at all loads up to rated capacity.
The Three-Phases auxiliary power capacity is 19,000 watts
peak, 17,000 watts continuous. The maximum current is 45
amps.
120 V DUPLEX RECEPTACLES AND GFCI MODULES
• Install a 50 amp, 120/240 VAC plug to the double-
pole circuit breaker using No. 6, 4 conductor cable
of the desired length.
A GFCI Module protects the two 120V auxiliary power
receptacles.
A GFCI (Ground Fault Circuit Interrupter) is a device to pro-
tect against electric shock should a piece of defective
equipment connected to it develop a ground fault. If this sit-
uation should occur, the GFCI module will trip, removing
voltage from the output of the receptacle. If a GFCI module
is tripped see the MAINTENANCE section for detailed
information on testing and resetting it. A GFCI module
should be properly tested at least once every month.
• Plug this cable into the 50 Amp, 120/240 Volt recep-
tacle on the case front.
WARNING
• Only a licensed, certified, trained electrician
should install the machine to a premises or resi-
dential electrical system. Be certain that:
The 120 V auxiliary power receptacles should only be used
with three wire grounded type plugs or approved double
insulated tools with two wire plugs. The current rating of
any plug used with the system must be at least equal to the
current capacity of the associated receptacle.
• The installation complies with the National
Electrical Code and all other applicable electri-
cal codes.
NOTE: The 240 V receptacle has two 120 V circuits, but
are of opposite polarities and cannot be paralleled.
• The premises is isolated and no feedback into
the utility system can occur. Certain laws require
the premises to be isolated before the generator
is linked to the premises. Check your local
requirements.
All auxiliary power is protected by circuit breakers. The
120V has 20 Amp circuit breakers for each duplex recepta-
cle. The 120/240V Single Phase and the 240V Three-
Phases have a 50 Amp 3-pole Circuit Breaker that discon-
nects both hot leads and all Three Phases simultaneously.
------------------------------------------------------------------------
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A-7
A-7
INSTALLATION
CONNECTION OF DX450 TO PREMISES WIRING
HUBBELL CS6365C
xyz
WARNING
• Only a licensed, certified, trained electrician should install the machine to a premises or residential
electrical system. Be certain that:
• The installation complies with the National Electrical Code and all other applicable electrical codes.
• The premises is isolated and no feedback into the utility system can occur. Certain state and local
laws require the premises to be isolated before the generator is linked to the premises. Check your
state and local requirements.
• A double pole, double throw transfer switch in conjunction with the properly rated double throw
circuit breaker is connected between the generator power and the utility meter.
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A-8
A-8
INSTALLATION
4. Control Cable Model:
CONNECTION OF LINCOLN ELECTRIC
WIRE FEEDERS
• Connect Control Cable between Engine Welder
and Feeder.
Connection of LN-7 or LN-8 to the DX450
1. Shut the welder off.
• Set the "WELD TERMINALS" switch to
"REMOTELY CONTROLLED"
2. Connect the LN-7 or LN-8 per instructions on the
appropriate connection diagram in Section F.
• Set the MODE switch to the "CV-WIRE " position.
• Set the "WIRE FEEDER VOLTMETER" switch to
either "+" or "-" as required by the electrode polar-
ity being used.
3. Set the "WIRE FEEDER VOLTMETER" switch to
either "+" or "-" as required by the electrode being
used.
• Set the "ARC CONTROL" knob to "0" initially and
adjust to suit.
4. Set the "MODE" switch to the "CV WIRE " posi-
tion.
5. Set the "ARC CONTROL" knob to "0" initially and
adjust to suit.
• Set the "IDLE" switch to the "AUTO" position.
• When the gun trigger is closed, the current sens-
ing circuit will cause the DX450 engine to go to
the high idle speed, the wire will begin to feed
and the welding process started. When welding is
stopped, the engine will revert to low idle speed
after approximately 12 seconds unless welding is
resumed.
6. Set the "WELD TERMINALS" switch to the
"REMOTELY CONTROLLED" position.
7. Set the "IDLE" switch to the "HIGH" position.
Connection of LN-15 to the DX450
1. Shut the welder off.
2. For electrode Positive, connect the electrode
cable to the "+" terminal of the welder and work
cable to the "-" terminal of the welder. For elec-
trode Negative, connect the electrode cable to the
"-" terminal of the welder and work cable to the "+"
terminal of the welder.
3. Across The-Arc Model:
• Attach the single lead from the front of the LN-15
to work using the spring clip at the end of the
lead. This is a control lead to supply current to
the wire feeder motor; it does not carry welding
current.
• Set the "WELD TERMINALS" switch to "WELD
TERMINALS ON".
• When the gun trigger is closed, the current sens-
ing circuit will cause the DX450 engine to go to
the high idle speed, the wire will begin to feed
and the welding process started. When welding
is stopped, the engine will revert to low idle
speed after approximately 12 seconds unless
welding is resumed.
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A-9
A-9
INSTALLATION
Spool Gun (K487-25) and Cobramatic to DX450
WARNING
• Shut the welder off.
Connection of the LN-25 to the DX450
Shut off welder before making any electrical con-
nections.
• Connect per instructions on the appropriate connec-
tion diagram in Section F.
------------------------------------------------------------------------
The LN-25 with or without an internal contactor may
be used with the DX450 . See the appropriate connec-
tion diagram in Section F.
1. Shut the welder off.
2. For electrode Positive, connect the electrode
cable from the LN-25 to the "+" terminal of the
welder and work cable to the "-" terminal of the
welder. For electrode Negative, connect the elec-
trode cable from the LN-25 to the "-" terminal of
the welder and work cable to the "+" terminal of
the welder.
3. Attach the single lead from the front of the LN-25
to work using the spring clip at the end of the lead.
This is a control lead to supply current to the wire
feeder motor; it does not carry welding current.
4. Set the MODE switch to the "CV-WIRE " position.
5. Set the "WELD TERMINALS" switch to "WELD
TERMINALS ON"
6. Set the "ARC CONTROL" knob to "0" initially and
adjust to suit.
7. Set the "IDLE" switch to the "AUTO" position.
When not welding, the DX450 engine will be at
the low idle speed. If you are using an LN-25 with
an internal contactor, the electrode is not ener-
gized until the gun trigger is closed.
8. When the gun trigger is closed, the current sens-
ing circuit will cause the DX450 engine to go to
the high idle speed, the wire will begin to feed and
the welding process started. When welding is
stopped, the engine will revert to low idle speed
after approximately 12 seconds unless welding is
resumed.
CAUTION
If you are using an LN-25 without an internal con-
tactor, the electrode will be energized when the
DX450 is started.
------------------------------------------------------------------------
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B-1
B-1
OPERATION
• 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).
SAFETY PRECAUTIONS
WARNING
• See Engine Owner’s Manual for specific oil and
coolant recommendations.
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.
WARNING
ADD FUEL
------------------------------------------------------------------------
ELECTRIC SHOCK can kill.
• Stop engine while fueling.
• Do not smoke when fueling.
• Keep sparks and flame away
from tank.
• Do not leave unattended
while fueling.
• Do not touch electrically live parts or
electrode with skin or wet clothing.
• Insulate yourself from work and
ground
• Always wear dry insulating gloves.
• Wipe up spilled fuel and allow
fumes to clear before starting
engine.
• Always operate the welder with the hinged door
closed and the side panels in place.
DIESEL FUEL
can cause fire.
• 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.
• Do not overfill tank, fuel
expansion may cause over-
flow.
Diesel Fuel Only-Low Sulphur Fuel or Ultra Low
Sulphur in USA and Canada.
------------------------------------------------------------------------
• Remove the fuel tank cap.
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
• 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.
Chopper Technology
mance.
for superior welding perfor-
C
T
R
BREAK-IN PERIOD
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.
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.
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.
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.
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.
------------------------------------------------------------------------
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B-2
B-2
OPERATION
FIGURE B.1
11
1
9
2
10
13
3
4
14
15
12
16
8
17
7
18
19
21
22
20
6
5
When in the TOUCH START TIG mode and when
an Amptrol is connected to the 3-Pin Connector, the
OUTPUT dial is used to set the maximum current
range of the CURRENT CONTROL of the Amptrol.
WELDING CONTROLS (Figure B.1)
1. OUTPUT CONTROL- The OUTPUT dial is
used to preset the output voltage or current as dis-
played on the digital meters for the five welding
modes. When in the CC-STICK, ARC GOUGING or
CV-WIRE modes and when a remote control is con-
nected to the 3-Pin or 14-Pin Connector, the auto-
sensing circuit automatically switches the OUTPUT
CONTROL from control at the welder to the remote
control.
2. DIGITAL OUTPUT METERS-The digital
meters allow the output voltage (CV-WIRE mode)
or current (CC-STICK, DOWNHILL PIPE, ARC
GOUGING and TIG modes) to be set prior to weld-
ing using the OUTPUT control dial. During welding,
the meter display the actual output voltage
(VOLTS) and current (AMPS). A memory feature
holds the display of both meters on for seven sec-
onds after welding is stopped. This allows the oper-
ator to read the actual current and voltage just prior
to when welding was ceased.
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.
While the display is being held the left-most deci-
mal point in each display will be flashing. The
accuracy of the meters is +/- 3%.
3. WELD MODE SELECTOR SWITCH-
(Provides five selectable welding modes)
CV-WIRE
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 CON-
TROL inactive and the wire feeder voltage control
active. Otherwise, the OUTPUT CONTROL is used
to preset the voltage
ARC GOUGING
DOWNHILL PIPE
CC-STICK
TOUCH START TIG
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B-3
B-3
10. WIRE FEEDER VOLTMETER SWITCH:
OPERATION
4. ARC CONTROL- The ARC CONTROL dial is active in
the CV-WIRE, CC-STICK and DOWNHILL PIPE modes,
and has different functions in these modes. This control is
not active in the TIG and ARC GOUGING mode.
Matches the polarity of the wire feeder voltmeter to
the polarity of the electrode.
11. VRD (Voltage Reduction Device) INDICA-
TOR LIGHTS- On the front panel of the DX450
are two indicator lights. A red light when lit indicates
OCV(Open Circuit Voltage) is equal to or greater than
30V and a green light when lit indicates OCV(Open
Circuit Voltage) is less than 30V.
CC-STICK mode: In this mode, the ARC CONTROL dial
sets the short circuit current (arc-force) during stick welding
to adjust for a soft or crisp arc. Increasing the dial from –10
(soft) to +10 (crisp) increases the short circuit current and
prevents sticking of the electrode to the plate while welding.
This can also increase spatter. It is recommended that the
ARC CONTROL be set to the minimum number without
electrode sticking. Start with a setting at 0.
The VRD “On/Off” switch inside the control panel
must be “On” for the VRD function to be active and
the lights to be enabled. When the machine is first
started with VRD enabled, both lights will illuminate
for 5 seconds.
DOWNHILL PIPE mode: In this mode, the ARC CONTROL
dial sets the short circuit current (arc-force) during stick
welding to adjust for a soft or a more forceful digging arc
(crisp). Increasing the number from –10 (soft) to +10 (crisp)
increases the short circuit current which results in a more
forceful digging arc. Typically a forceful digging arc is pre-
ferred for root and hot passes. A softer arc is preferred for fill
and cap passes where weld puddle control and deposition
("stacking" of iron) are key to fast travel speeds. It is recom-
mended that the ARC CONTROL be set initially at 0.
These lights monitor the OCV(Open Circuit Voltage)
and weld voltage at all times. In the CC-Stick mode
when not welding the green light will illuminate indi-
cating that the VRD has reduced the OCV to less
than 30V. During welding the red light will illuminate
whenever the arc voltage is equal to or greater than
30V. This means that the red and green light may
alternate depending on the weld voltage. This is nor-
mal operation.
CV-WIRE mode: In this mode, turning the ARC CONTROL
clock wise from –10 (soft) to +10 (crisp) changes the arc
from soft and washed-in to crisp and narrow. It acts as an
inductance/pinch control. The proper setting depends on the
procedure and operator preference. Start with a setting of 0.
If the red light remains illuminated when not welding
in the CC-stick mode, the VRD is not functioning
properly. Please refer to your local field service shop
for service.
5. WELD OUTPUT TERMINALS WITH FLANGE
NUT- Provides a connection point for the electrode and
work cables.
If the VRD is turned “On” and the lights don’t come
“On”, refer to the trouble shooting section.
TABLE B.1
6. GROUND STUD-
Provides a connection point for
connecting the machine case to earth ground.
VRD INDICATOR LIGHTS
MODE
CC-STICK OCV
While
VRD "ON"
Green (OCV Reduced)
Red or Green
VRD "OFF"
7. 14-PIN CONNECTOR- For attaching wire feeder con-
trol cables. Includes contactor closure circuit, auto-sensing
remote control circuit, and 42V power. The remote control
circuit operates the same as the 6 Pin Amphenol.
Welding (Depends on Weld Voltage) *
CV-WIRE OCV
Red (OCV Not Reduced)
Weld Terminals On
Red (OCV Not Reduced)
Weld Terminals Remotely Controlled
Gun Trigger Closed
8. 3-PIN CONNECTOR- For attaching optional remote
control equipment. Includes auto-sensing remote control
circuit.
Green (No OCV)
Weld Terminals Remotely Controlled
Gun Trigger Open
No Lights
While
Red or Green
Welding (Depends on Weld Voltage) *
PIPE
OCV
While
Welding
Green (No Output)
Not Applicable (No Output)
9. WELD TERMINALS CONTROL SWITCH- In the
WELD TERMINALS ON position, the output is electrically
hot all the time. In the REMOTELY CONTROLLED posi-
tion, the output is controlled by a wire feeder or amptrol
device, and is electrically off until a remote switch is
ARC GOUGING OCV
Green (No Output)
Not Applicable (No Output)
While
Welding
OCV
While
TIG
Green (Process is Low Voltage)
Green (Process is Low Voltage)
depressed.
Welding
* It is normal for the lights to alternate between colors while welding.
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B-4
B-4
OPERATION
18. ELECTRIC FUEL GAUGE- The electric fuel
gauge gives accurate and reliable indication as to how
much fuel is in the fuel tank.
ENGINE CONTROLS:
12. RUN/STOP SWITCH
-
-RUN position energizes the engine prior to starting.
STOP position stops the engine. The oil pressure inter-
lock switch prevents battery drain if the switch is left in
the RUN position and the engine is not operating.
19. COOLANT TEMPERATURE GAUGE- A indica-
tor of engine coolant temperature.
20. OIL PRESSURE GAUGE- A indicator of engine
13. GLOW PLUG PUSH BUTTON
-
Oil Pressure.
• When pushed activates the glow plugs. Glow plug
should not be activated for more than 20 seconds con-
tinuously.
21. BATTERY CHARGING LIGHT- A warning indica-
tor light for Low/No battery charge. The light is off when
the systems are functioning properly. The light will
come on if there is a Low/No battery condition but the
machine will continue to run.
14. START PUSH BUTTON
-
Energizes the starter
motor to crank the engine.
15. IDLER SWITCH- Has two positions as follows:
1) In the HIGH position, the engine runs at the high idle
speed controlled by the engine governor.
Note: The light may or may not come on when the RUN-
STOP switch is in the "ON" position. After starting
the engine the light will go off unless a Low/No
battery charge condition exists.
2) In the AUTO position, the idler operates as follows:
• When switched from HIGH to AUTO or after starting
the engine, the engine will operate at full speed for
approximately 12 seconds and then go to low idle
speed.
• When the electrode touches the work or power is
drawn for lights or tools (approximately 100 Watts mini-
mum), the engine accelerates and operates at full
speed.
• When welding ceases or the AC power load is turned
off, a fixed time delay of approximately 12 seconds
starts. If the welding or AC power load is not restarted
before the end of the time delay, the idler reduces the
engine speed to low idle speed.
STARTING THE ENGINE
1. Remove all plugs connected to the AC power recepta-
cles.
2. Set IDLER switch to AUTO.
3. Press Glow Plug Button and hold 15 to 20 seconds.
4. Set the RUN/STOP switch to RUN.
5. Press START button until the engine starts or for up to 10
seconds. Continue to hold the glow plug button for up to
an additional 10 seconds.
6. Release the engine START button immediately when the
engine starts.
• The engine will automatically return to high idle speed
when there is welding load or AC power load reapplied.
7. The engine will run at high idle speed for approximately
12 seconds and then drop to low idle speed. Allow the
engine to warm up at low idle for several minutes before
applying a load and/or switching to high idle. Allow a
longer warm up time in cold weather.
16. ENGINE HOUR METER- Displays the total time
that the engine has been running. This meter is useful
for scheduling prescribed maintenance.
17. CIRCUIT BREAKER- For protection of Battery
Charging Circuit.
TABLE B.2
TYPICAL DX450 FUEL CONSUMPTION
KUBOTA V2403M
Gal./Hr (Liters/Hr)
.42(1.58)
Running Time for
20 gallons / hours
Low Idle - No Load
1400 R.P.M.
48.03
High Idle - No Load
1800 R.P.M.
DC Weld Output
500 Amps @ 40Volts
20,000 Watts 3 Phase
.60(2.28)
1.57(5.93)
1.63(6.16)
1.28 (4.83)
33.18
12.76
12.29
15.67
12,000 Watts 1 Phase
NOTE: This data is for reference only. Fuel consumption is
approximate and can be influenced by many factors, including
engine maintenance, environmental conditions and fuel quality.
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B-5
B-5
OPERATION
The ARC CONTROL dial sets the short circuit current
(arc-force) during stick welding to adjust for a soft or
crisp arc. Increasing the number from -10(soft) to
+10(crisp) increases the short circuit current and pre-
vents sticking of the electrode to the plate while welding.
This can also increase spatter. It is recommended that
the ARC CONTROL be set to the minimum number
without electrode sticking. Start with the dial set at 0.
NOTE: If the unit fails to start turn Run/Stop switch
to off and repeat step 3 through step 7 after
waiting 30 seconds.
CAUTION
• Do not allow the starter motor to run continuously
for more than 20 seconds.
• Do not push the START button while the engine
is running because this can damage the ring
gear and/or the starter motor.
• IF the Engine Protection or Battery Charging
Lights do “not” turn off shortly after starting the
engine shut off the engine immediately and
determine the cause.
------------------------------------------------------------------------
NOTE: When starting for the first time, or after and
extended period of time of not operating, it will take
longer than normal to start because the fuel pump has
to fill the fuel system. For best results, bleed the fuel
system as indicated in Maintenance Section of this
manual.
NOTE: Due to the low OCV with the VRD on, a
very slight delay during striking of the electrodes
may occur. Due to the requirement of the resis-
tance in the circuit to be low for a VRD to operate, a
good metal-to-metal contact must be made
between the metal core of the electrode and the
job. A poor connection anywhere in the welding
output circuit may limit the operation of the VRD.
This includes a good connection of the work clamp
to the job. The work clamp should be connected as
close as practical to where the welding will be per-
formed.
A. For New Electrodes
E6010 - Touch, Lift to Start the Arc
E7018, E7024 - Touch, Rock Back and Forth in
Joint, Lift .
STOPPING THE ENGINE
Remove all welding and auxiliary power loads and
allow the engine to run at low idle speed for a few
minutes to cool the engine.
Once the arc is started, normal welding technique
for the application is then used.
STOP the engine by placing the RUN-STOP switch in
the STOP position.
B. For Re-Striking Electrodes
NOTE: A fuel shut off valve is located on the fuel pre-filter.
Some electrodes form a cone at the end of the
electrode after the welding arc has been broken,
particularly iron powder and low hydrogen elec-
trodes. This cone will need to be broken off in order
to have the metal core of the electrode make con-
tact.
WELDER OPERATION
DUTY CYCLE
Duty Cycle is the percentage of time the load is being
applied in a 10 minute period. For example a 60% duty
cycle, represents 6 minutes of load and 4 minutes of no
load in a 10 minute period.
E6010 - Push, Twist in Joint, Lift
E7018, E7024 - Push, Rock Back and Forth in
Joint, Lift.
ELECTRODE INFORMATION
For any electrode the procedures should be kept with-
in the rating of the machine. For information on elec-
trodes and their proper application see
publication.
Once the arc is started, normal welding technique
for the application is then used.
For other electrodes the above techniques should
be tried first and varied as needed to suit operator
preference. The goal for successful starting is good
metal to metal contact.
The DX450 can be used with a broad range of DC stick
electrodes. The MODE switch provides two stick welding
settings as follows:
For indicator light operation, see table B.1.
CONSTANT CURRENT (CC-STICK)
WELDING
DOWNHILL PIPE Welding
The CC-STICK position of the MODE switch is designed
for horizontal and vertical-up welding with all types of
electrodes, especially low hydrogen. The OUTPUT CON-
TROL dial adjusts the full output range for stick welding.
This slope controlled setting is intended for "out-of-
position" and "down hill" pipe welding where the oper-
ator would like to control the current level by changing
the arc length.
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B-6
B-6
OPERATION
When in the TOUCH START TIG mode and when a
Amptrol is connected to the 6-Pin connector the OUT-
PUT CONTROL dial is used to set the maximum cur-
rent range of the current control of the Amptrol.
The OUTPUT CONTROL dial adjusts the full output
range for pipe welding.
The ARC CONTROL dial sets the short circuit current
(arc-force) during stick welding to adjust for a soft or
more forceful digging arc (crisp). Increasing the number
from -10(soft) to +10(crisp) increases the short circuit
current which results in a more forceful digging arc.
The ARC CONTROL is not active in the TIG mode. To
STOP a weld, simply pull the TIG torch away from the
work.
When the arc voltage reaches approximately 30 Volts
the arc will go out and the machine will reset the cur-
rent to the Touch Start level.
Typically a forceful digging arc is preferred for root and
hot passes. A softer arc is preferred for fill and cap pass-
es where weld puddle control and deposition (“stacking”
of iron) are key to fast travel speeds. This can also
increase spatter.
To reinitiate the arc, retouch the tungsten to the work
and lift. Alternatively, the weld can be stopped by
releasing the Amptrol or arc start switch.
It is recommended that the ARC CONTROL be set to the
minimum number without electrode sticking. Start with
the dial set at 0.
The DX450 can be used in a wide variety of DC TIG
welding applications. In general the ‘Touch Start’ fea-
ture allows contamination free starting without the use
of a Hi-frequency unit. If desired, the K930-2 TIG
Module can be used with the DX450 . The settings are
for reference.
NOTE: With the VRD switch in the “ON” position there is
no output in the DOWNHILL PIPE mode. For indicator
light operation, see table B.1.
TIG WELDING
DX450 settings when using the K930-2 TIG Module
with an Amptrol or Arc Start Switch:
• Set the MODE Switch to the TOUCH START TIG
setting.
The TOUCH START TIG setting of the MODE switch is
for DC TIG (Tungsten Inert Gas) welding. To initiate a
weld, the OUTPUT CONTROL dial is first set to the
desired current and the tungsten is touched to the work.
During the time the tungsten is touching the work there is
very little voltage or current and, in general, no tungsten
contamination. Then, the tungsten is gently lifted off the
work in a rocking motion, which establishes the arc.
• Set the "IDLER" Switch to the "AUTO" position.
• Set the "WELDING TERMINALS" switch to the
"REMOTELY CONTROLLED" position.
TABLE B.3
(1)
(2)
TYPICAL CURRENT RANGES
FOR TUNGSTEN ELECTRODES
Tungsten Electrode
Diameter in. (mm)
DCEN (-)
DCEP (+)
Approximate Argon Gas Flow
Flow Rate C.F.H. ( l /min.)
TIG TORCH
Nozzle Size (4), (5)
1%, 2% Thoriated
Tungsten
1%, 2% Thoriated Aluminum
Tungsten
Stainless Steel
.010
0.020
0.040
(.25)
(.50)
(1.0)
2-15
5-20
15-80
(3)
(3)
(3)
3-8
5-10
5-10
(2-4)
(3-5)
(3-5)
3-8
5-10
5-10
(2-4)
(3-5)
(3-5)
#4, #5, #6
1/16
(1.6)
70-150
10-20
5-10
(3-5)
9-13
(4-6)
#5, #6
3/32
1/8
(2.4)
(3.2)
150-250
250-400
15-30
25-40
13-17
15-23
(6-8)
(7-11)
11-15
11-15
(5-7)
(5-7)
#6, #7, #8
5/32
3/16
1/4
(4.0)
(4.8)
(6.4)
400-500
500-750
750-1000
40-55
55-80
80-125
21-25
23-27
28-32
(10-12)
(11-13)
(13-15)
13-17
18-22
23-27
(6-8)
(8-10)
(11-13)
#8, #10
(1) When used with argon gas. The current ranges shown must be reduced when using argon/helium or pure helium shielding gases.
(2) Tungsten electrodes are classified as follows by the American Welding Society (AWS):
Pure
EWP
1% Thoriated
2% Thoriated
EWTh-1
EWTh-2
Though not yet recognized by the AWS, Ceriated Tungsten is now widely accepted as a substitute for 2% Thoriated Tungsten in AC and DC applications.
(3) DCEP is not commonly used in these sizes.
(4) TIG torch nozzle "sizes" are in multiples of 1/16ths of an inch:
# 4 = 1/4 in.
# 5 = 5/16 in.
# 6 = 3/8 in.
# 7 = 7/16 in.
# 8 = 1/2 in.
#10 = 5/8 in.
(6 mm)
(8 mm)
(10 mm)
(11 mm)
(12.5 mm)
(16 mm)
(5) TIG torch nozzles are typically made from alumina ceramic. Special applications may require lava nozzles, which are less prone to breakage, but cannot withstand high temperatures
and high duty cycles.
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B-7
B-7
OPERATION
This will keep the "Solid State" contactor open and provide a
"cold" electrode until the Amptrol or Arc Start Switch is pressed.
current to the desired level for the gouging electrode
being used according to the ratings in the following
Table B.4.
When using the TIG Module, the OUTPUT CONTROL on the
DX450 is used to set the maximum range of the CURRENT
CONTROL on the TIG Module or an Amptrol if connected to the
TIG Module.
TABLE B.4
Carbon Diameter
Current Range (DC, electrode
positive)
1/8"(3.2mm)
5/32"(4.0mm)
3/16"9(4.8mm)
1/4"(6.4mm)
5/16"(8.0mm)
60-90 Amps
90-150 Amps
200-250 Amps
300-400 Amps
400-Max.Amps
NOTE: The TIG process is to receive a low voltage welding
process. There is no difference in operation with the
VRD “On” or “Off” for this mode. For indicator light oper-
ation, see table B.1.
WIRE WELDING-CV
Connect a wire feeder to the DX450 according to the instruc-
tions in INSTALLATION INSTRUCTIONS Section.
The ARC CONTROL is not active in the ARC GOUG-
ING Mode. The ARC CONTROL is automatically set
to maximum when the ARC GOUGING mode is
selected which provides the best ARC GOUGING per-
formance.
The DX450 in the CV-WIRE mode, permits it to be used with a
broad range of flux cored wire (Innershield and Outershield)
electrodes and solid wires for MIG welding (gas metal arc weld-
ing). Welding can be finely tuned using the ARC CONTROL.
Turning the ARC CONTROL clockwise from –10 (soft) to +10
(crisp) changes the arc from soft and washed-in to crisp and
narrow. It acts as an inductance/pinch control. The proper set-
ting depends on the procedure and operator preference. Start
with the dial set at 0.
NOTE: With the VRD switch in the “ON” position there
is no output in the Arc Gouging Mode. For indicator
light operation, see table B.1.
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.
NOTE: In the CV-Mode with VRD “On”, the OCV(Open Circuit
Voltage) is not reduced. For indicator light operation,
see table B.1.
Simultaneous Welding and Auxiliary Power Loads
The auxiliary power ratings are with no welding load.
Simultaneous welding and power loads are specified
in Table B.5.
ARC GOUGING
The DX450 can be used for arc gouging. For optimal
performance, set the MODE switch to ARC GOUGING.
Set the OUTPUT CONTROL knob to adjust output
TABLE B.5 DX450 SIMULTANEOUS WELDING AND POWER LOADS
1 PHASE 3 PHASE
WATTS WATTS
WELD
AMPS
0
100
200
300
400
500
BOTH 1 AND 3 PHASE
AMPS
46
46
33
20
7
AMPS
41
37
31
23
8
WATTS
AMPS
11,000
11,100
8,000
4,700
1,700
0
17,000
15,400
13,000
9,400
3,400
0
11,000
11,000
8,000
4,700
1,700
0
-
-
-
-
-
0
PLUS
OR
OR
0
0
TABLE B.6
DX450 Extension Cord Length Recommendations
(Use the shortest length extension cord possible sized per the following table.)
Current Voltage Load
(Amps) Volts (Watts)
Maximum Allowable Cord Length in ft. (m) for Conductor Size
12 AWG 10 AWG 8 AWG 6 AWG
14 AWG
4 AWG
15
20
15
20
44
120
120
240
240
240
1800
2400
3600
4800
9500
30
(9)
40
(12)
(9)
(23)
(18)
75
(23)
(15)
(46)
(30)
(15)
125
(38)
(27)
(69)
(53)
(27)
175
(53)
(42)
(107)
(84)
(46)
300
225
600
450
225
(91)
(69)
(183)
(137)
(69)
30
75
60
50
150
100
50
88
225
175
90
138
350
275
150
60
(18)
Conductor size is based on maximum 2.0% voltage drop.
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C-1
C-1
ACCESSORIES
FIELD INSTALLED OPTIONS /
ACCESSORIES
TIG OPTIONS
K1783-9 Pro -Torch® PTA-26V TIG Torch
Air Cooled 200 amp torch (2 piece) equipped with valve for
gas flow control. 25 ft. (7.6m) length.
K903-1 SPARK ARRESTOR - Includes a heavy gage steel,
approved spark arrestor, clamp and adapter for mounting to
the muffler exhaust pipe.
KP509 Magnum Parts Kit for PTA-26V TIG Torch
Magnum Parts Kit provides all the torch accessories you
need to start welding. Parts kit provides collets, collet bod-
ies, a black cap, alumina nozzles and tungstens in a variety
of sizes, all packaged in an easy to carry reclosable sack.
K704 ACCESSORY SET - Includes 35 ft. (10m) of elec-
trode cable and 30 ft. (9.1m) of work cable, headshield,
work clamp electrode holder. Cables are rated at 400
amps, 100% duty cycle.
K2347-1 Precision TIG 185 Ready-Pak(For AC TIG)
K2350-1 Invertec® V205-T AC/DC One-Pak™ Package
(For AC TIG)
K1858-1 Service Indicator Kit- Provides a GO / NO-GO
visual indication of air cleaner element useful service life.
Filter service based on restriction readings allows the
longest life possible from the filter and best engine protec-
tion.
PLASMA CUTTING
K1601-1 Pro-Cut 55-Cuts metal using the 3-phase AC gen-
erator power from the engine driven welder. Accepts 3-
phase power.
K2641-2 Trailer - A 4-wheel steerable trailer for in-
plant and yard towing. Comes standard with a Duo-
Hitch™, a 2” Ball and Lunette Eye combination hitch.
WIRE FEEDER OPTIONS
K449 LN-25 - Includes internal contactor for across the arc
operation (no control cable). Provides “cold” electrode until
gun trigger is pressed. Includes gas solenoid. For spools up
to 44lb. (20 kg) spools.
K1870-1 LN-15 Across the Arc Wire Feeder.
Portable, lightweight, compact CC/CV unit for flux-cored and
MIG welding. Includes Gas Solenoid, adjustable flow meter
and internal contactor. For 10-15 lb. (4.5-6.8kg) spools.
Magnum Gun and Magnum Gun Connector Kit are required
for gas-shielded welding. Innershield Gun is required for
gasless welding.
K126-2 Magnum 350 Innershield Gun
K1802-1 Magnum 300 MIG Gun (for LN-25)
K470-2 Magnum 300 MIG Gun (for LN-15, Includes
Connector Kit)
K466-10 Connector Kit (for LN-15, K470-2)
K1500-1 Gun Receiver Bushing (for LN-15 & K126-2)
Note: See Wire Feeder IM manuals for appropriate Drive
Roll and Guide Tubes.
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D-1
D-1
MAINTENANCE
SAFETY PRECAUTIONS
Read the Safety Precautions in the front of this
manual and in the Engine Owner’s Manual before
working on this machine.
WARNING
• Have qualified personnel do all maintenance
and troubleshooting work.
Keep all equipment safety guards, covers, and
devices in position and in good repair. Keep
hands, hair, clothing, and tools away from the
gears, fans, and all other moving parts when
starting, operating, or repairing the equipment.
------------------------------------------------------------------------
Routine Maintenance
• Turn the engine off before working inside the
machine or servicing the engine.
• Remove guards only when necessary to
perform maintenance and replace them when
the maintenance requiring their removal is
complete. If guards are missing from the
machine, obtain replacements from a Lincoln
Distributor. (See Operating Manual Parts List.)
At the end of each day’s use, refill the fuel tank to
minimize moisture condensation in the tank. Running
out of fuel tends to draw dirt into the fuel system.
Also, check the crankcase oil level and add oil if
indicated.
ENGINE SERVICE
EVERY DAY OR EVERY 8 HOURS
FIRST SERVICE (50 HOURS)
EVERY 100 HOURS OR 3 MONTHS
EVERY 150 HOURS OR 4 MONTHS
EVERY 30O HOURS OR 9 MONTHS
EVERY 400 HOURS OR 12 MONTHS
EVERY 500 HOURS OR 15 MONTHS
EVERY 600 HOURS OR 18 MONTHS
ENGINE SERVICE (NOTE 2)
MAINTENANCE ITEM
TYPE OR QUANTITY
I
I
Coolant level
I
Concentration of antifreeze
R Coolant (NOTE 3)
50/50 Water/Ethylene Glycol
9.5 qts., 9.0L
Engine oil level (NOTE 1)
Engine oil (NOTE 1 & 3)
Engine oil filter
R
R
R
10.0 qts., 9.5L (including filter)
Kubota #16414-32430
R
C
Drain water separator & fuel strainer
Fuel filter canister
R
R
Kubota #16631-43560
Kubota #15831-43380
C
I
Fuel pre-filter element
Tension of alternator drive belt
Alternator drive belt wear
Alternator drive belt
I
R
Kubota # 17480-97010
C
Air filter (earlier check may be req'd)
Air filter element
Donaldson # P821575
I
I
I
Valve clearances
Intake .0071"-.0086", Exhaust .0071"-.0086"
Electrical systems
All nuts and bolts for tightness
Leaks or engine damage
Battery
I
I
I = Inspect
Notes:
C = Clean
R = Replace
(1) Consult Engine Operators Manual for oil recommendations.
(2) Consult Engine Operators Manual for additional maintenance schedule information.
(3) Fill slowly! ensure quantity is used.
Above operations to be carried out by trained personnel with reference to the workshop manual
where necessary. These preventive maintenance periods apply to average conditions of
operation. If necessary, use shorter periods.
S27632
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D-2
D-2
MAINTENANCE
ENGINE OIL CHANGE
OIL FILTER CHANGE
Drain the engine oil while the engine is warm to assure
rapid and complete draining. It is recommended that
each time the oil is changed the oil filter be changed as
well.
• Drain the oil.
• Remove the oil filter with an oil filter wrench and
drain the oil into a suitable container. Discard the
used filter. Note: Care should be taken during filter
removal to not disrupt or damage in any way the fuel
lines.
• Be sure the unit is off. Disconnect the negative bat-
tery cable to ensure safety.
• Locate oil drain hose and valve in bottom of base
and pull through the hole in the battery access panel
on the welder.
• Clean the filter mounting base and coat the gasket
of the new filter with clean engine oil.
• Screw the new filter on by hand until the gasket con-
tacts the mounting base. Using an oil filter wrench,
tighten the filter an additional 1/2 to 7/8 of a turn.
• Open oil drain valve by lifting up spring loaded lever
and rotate 90 counterclockwise. Pull to open and
°
drain the oil into a suitable container for disposal.
• Refill the crankcase with the specified amount of the
recommended engine oil. Reinstall the oil filler cap
and tighten securely.
• Close the drain valve by rotating lever 90 clockwise.
°
• Re-fill the crankcase to the upper limit mark on the
dipstick with the recommended oil (see engine oper-
ation manual OR engine service items decal OR
below). Replace and tighten the oil filler cap secure-
ly.
• Start the engine and check for oil filter leaks.
• Stop the engine and check the oil level. If neces-
sary, add oil to the upper limit mark on the dipstick.
• Push oil drain hose and valve back into unit, re-con-
nect negative battery cable, and close doors and
engine top cover before restarting unit.Wash your
hands with soap and water after handling used motor
oil. Please dispose of used motor oil in a manner that
is compatible with the environment. We suggest you
take it in a sealed container to your local service sta-
tion or recycling center for reclamation. DO NOT
throw it in the trash; pour it on the ground or down a
drain.
WARNING
• Never use gasoline or low flash point solvents
for cleaning the air cleaner element. A fire or
explosion could result.
CAUTION
• Never run the engine without the air cleaner.
Rapid engine wear will result from contaminants,
such as dust and dirt being drawn into the
engine.
Use motor oil designed for diesel engines that meets
requirements for API service classification
CC/CD/CE/CF/CF-4/CG-4 or CH-4.
------------------------------------------------------------------------
AIR CLEANER
ACEA E1/E2/E3. Always check the API service label
on the oil container to be sure it includes the letters
indicated. (Note: An S-grade oil must not be used in a
diesel engine or damage may result. It IS permissible
to use an oil that meets S and C grade service classifi-
cations.)
The diesel engine is equipped with a dry type air filter.
Never apply oil to it. Service the air cleaner as follows:
Replace the element every 500 hours of operation.
Under dusty conditions, replace sooner.
SAE 10W30 is recommended for general, all tempera-
ture use, 5F to 104F (-15C to 40C).
See engine owner’s manual for more specific informa-
tion on oil viscosity recommendations.
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D-3
D-3
MAINTENANCE
Service Instructions
Single- and Two-Staage Engine Air Cleaners
Inspect the New Filter for Damage
Remove the Filter
Inspect the new filter carefully, paying attention to
the inside of the open end, which is the
sealing area. NEVER install a damaged
filter. A new Donaldson radial seal
filter may have a dry lubricant on the
seal to aid installation.
Unfasten or unlatch the
service cover. Because
the filter fits tightly over the
outlet tube to create the critical seal, there will
be some initial resistance, similar to breaking
the seal on a jar. Gently move the end of the filter
back and forth to break the seal then rotate while
pulling straight out. Avoid knocking the filter
against the housing.
Rotate the
filter while
pulling
straight out.
Insert the New Radial Seal Filter Properly
If you're servicing the safety filter, this should be seated into
position before installing the primary filter.
If your air cleaner has a safety filter, replace it every third primary
filter change. Remove the safety filter as you would the primary
filter. Make sure you cover the air cleaner outlet tube to avoid any
unfiltered contaminant dropping into the engine.
Insert the new filter carefully. Seat
the filter by hand, making certain it is
completely into the air cleaner housing
before securing the cover in place.
Clean Booth Surfaces of the Outlet Tube
and Check thhe Vacuaator™ VValve
The critical sealing area will stretch
slightly, adjust itself and distribute the sealing pressure evenly. To
complete a tight seal, apply pressure by hand at the outer rim of
Use a clean cloth to wipe the filter sealing surface and the inside of
the outlet tube. Contaminant on the sealing surface could hinder an
effective seal and cause leakage. Make sure that all contaminant is
removed before the new filter is inserted. Dirt accidently transferred
to the inside of the outlet tube will reach the engine and cause
wear. Engine manufacturers say that it takes only a few grams of
dirt to "dust" an engine! Be careful not to damage the sealing area
on the tube.
the filter, not the flexible center. (Avoid pushing on the center of the
urethane end cap.) No cover pressure is required to hold the seal.
NEVER use the service cover to push the filter into place! Using the
cover to push the filter in could cause damage to the housing, cover
fasteners and will void the warranty.
If the service cover hits the filter before it is fully in place, remove
the cover and push the filter (by hand) further into the air cleaner
and try again. The cover should go on with no extra force.
Wipe both sides
of the outlet
tube clean.
Once the filter is in place, secure the service cover.
Outer edge of the
Inner edge of the
outlet tube
Caution
outlet tube
NEVER use thhe servvice coover to
push the fiilter intto placee! Using
the coverr to push the ffilter iin could
cause damaage to thhee housingg, cover
fastenerrs and will vooid the waarranty.
If your air cleaner is equipped with a Vacuator Valve
Visually check and physically squeeze to make sure the
valve is flexible and not inverted, damaged or plugged.
Inspect the Old
Filter for Leak Clues
Checkk Connectors for Tighht Fit
Make sure that all mounting bands, clamps, bolts, and connections
in the entire air cleaner system are tight. Check for holes in piping
and repair if needed. Any leaks in your intake piping will send dust
directly to the engine!
Visually inspect the old filter for any signs
of leaks. A streak of dust on the clean side
of the filter is a telltale sign. Remove any
cause of leaks before installing new filter.
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D-4
D-4
MAINTENANCE
FUEL: Diesel Fuel Only - Low Sulphur Fuel
COOLING SYSTEM
or Ultra Low Sulphur Fuel in U.S.A. and
CANADA only.
WARNING
HOT COOLANT can burn skin.
At the end of each day’s use, refill the fuel tank to min-
imize moisture condensation and dirt contamination in
the fuel line. Do not overfill; leave room for the fuel to
expand.
• Do not remove cap if radiator is
hot.
Use only fresh No. 2D diesel fuel, the use of No. 1D
diesel fuel is recommended in place of No. 2D at tem-
peratures below 23°F (-5°C). Do not use kerosene.
------------------------------------------------------------------------
Check the coolant level by observing the level in the
radiator and recovery bottle. Add 50/50 antifreeze /
water solution if the level is close to or below the
"LOW" mark. do not fill above the "FULL" mark.
Remove radiator cap and add coolant to radiator. Fill
up to the top of the tube in the radiator filler neck
which includes a connecting hose coming from the
thermostat housing.
See the Engine Operator's Manual for instructions on
replacing the fuel filter.
BLEEDING THE FUEL SYSTEM
You may need to bleed air from the fuel system if the
fuel filter or fuel lines have been detached, the fuel
tank has been ran empty or after periods of long stor-
age. It is recommended that the fuel shutoff valve be
closed during periods of non-use.
To drain the coolant, open the valve at the bottom of
the radiator. Open the radiator cap to allow complete
drainage. (Tighten the valve and refill with a 50/50
antifreeze/water solution.) Use an automotive grade
(low silicate) ethylene glycol antifreeze. The cooling
system capacity is11.5 quarts (10.9L). Squeeze upper
and lower radiator hoses while filling to bleed air from
system coolant. Replace and tighten the radiator cap.
WARNING
To avoid personal injury, do not bleed a hot
engine. This could cause fuel to spill onto a hot
exhaust manifold, creating a danger of fire.
------------------------------------------------------------------------
Bleed the fuel system as follows:
CAUTION
Always premix the antifreeze and clean tap water
before adding to the radiator. It is very important
that a precise 50/50 solution be used with this
engine year round. This gives proper cooling dur-
ing hot weather and freezing protection to -34° F (-
37° C).
1. Fill the fuel tank with fuel.
2. Open the fuel shut off valve.
3. Loosen bleed fitting on the fuel injector manifold.
4. Operate hand priming lever until fuel comes out the
bleed screw on the injector manifold. This could
take 20-30 seconds of rapid operation of the prim-
ing lever. Tighten bleed fitting on injector manifold.
5. Follow normal STARTING procedures until engine
starts.
Cooling solution exceeding 50% ethylene glycol
can result in engine overheating and damage to
the engine. Coolant solution must be premixed
before adding to radiator.
------------------------------------------------------------------------
Periodically remove the dirt from the radiator fins.
Periodically check the fan belt and radiator hoses.
Replace if signs of deterioration are found.
TIGHTENING THE FAN BELT
If the fan belt is loose, the engine can overheat and
the battery lose its charge. Check tightness by press-
ing on the belt midway between the pulleys. It should
deflect about .25 in.(6.4 mm) under a load of 20 lbs.(9
Kg).
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D-5
D-5
MAINTENANCE
CLEANING THE BATTERY
FUEL FILTER
1. Check the fuel filter and fuel pre-filter for water
Keep the battery clean by wiping it with a damp cloth
when dirty. If the terminals appear corroded, discon-
nect the battery cables and wash the terminals with an
ammonia solution or a solution of 1/4 pound (0.1113
kg) of baking soda and 1 quart (0.9461L) of water. Be
sure the battery vent plugs (if equipped) are tight so
that none of the solution enters the cells.
accumulation or sediment.
2. Replace the fuel filter if it is found with excessive
water accumulation or sediment. Empty fuel pre-fil-
ter.
After cleaning, flush the outside of the battery, the bat-
tery compartment, and surrounding areas with clear
water. Coat the battery terminals lightly with petroleum
jelly or a non-conductive grease to retard corrosion.
Keep the battery clean and dry. Moisture accumula-
tion on the battery can lead to more rapid discharge
and early battery failure.
OVERSPEED IS HAZARDOUS
The maximum allowable high idle speed for this
machine is 1850 RPM, no load. Do NOT tamper
with governor components or setting or make any
other adjustments to increase the maximum
speed. Severe personal injury and damage to the
machine can result if operated at speeds above
maximum.
CHECKING THE ELECTROLYTE LEVEL
ENGINE ADJUSTMENT
Adjustments to the engine are to be made only by a
Service Center or an authorized Field Service Shop.
If battery cells are low, fill them to the neck of the filler
hole with distilled water and recharge. If one cell is
low, check for leaks.
BATTERY MAINTENANCE
CHARGING THE BATTERY
To access the battery, remove the battery tray from
the front of the machine with 3/8” nut driver or flat
head screw driver. Pull the tray out of machine far
enough to disconnect the negative and then positive
battery cables. The tray can then be tilted and lifted to
remove the entire tray and battery from the machine
for easy service.
When you charge, jump, replace, or otherwise con-
nect battery cables to the battery, be sure the polarity
is correct. Improper polarity can damage the charging
circuit. The DX450 positive (+) battery terminal has a
red terminal cover.
If you need to charge the battery with an external
charger, disconnect the negative cable first, then the
positive cable before you attach the charger leads.
After the battery is charged, reconnect the positive
battery cable first and the negative cable last. Failure
to do so can result in damage to the internal charger
components.
WARNING
GASES FROM BATTERY can explode.
G Keep sparks, flame and cigarettes
away from battery.
Follow the instructions of the battery charger manu-
facturer for proper charger settings and charging time.
To prevent EXPLOSION when:
G INSTALLING A NEW BATTERY — disconnect
negative cable from old battery first and con-
nect to new battery last.
SERVICING OPTIONAL SPARK
ARRESTOR
G CONNECTING A BATTERY CHARGER —
remove battery from welder by disconnecting
negative cable first, then positive cable and
battery clamp. When reinstalling, connect
negative cable last. Keep well ventilated.
Clean every 100 hours.
WARNING
G USING A BOOSTER — connect positive lead to
battery first then connect negative lead to neg-
ative battery lead at engine foot.
• MUFFLER MAY BE HOT
BATTERY ACID can burn eyes and skin.
• ALLOW ENGINE TO COOL BEFORE INSTALLING
THE SPARK ARRESTER!
G
Wear gloves and eye protection
and be careful when working near
battery.
• DO NOT OPERATE ENGINE WHILE INSTALLING
THE SPARK ARRESTER!
G Follow instructions printed on bat-
tery.
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D-6
D-6
MAINTENANCE
GFCI MODULE TESTING AND RESETTING
PROCEDURE
WELDER / GENERATOR
MAINTENANCE
The GFCI module should be properly tested at least
once every month or whenever it is tripped. To properly
test and reset the GFCI module:
STORAGE: Store in clean, dry protected areas.
CLEANING: Blow out the generator and controls peri-
odically with low pressure air. Do this at least once a
week in particularly dirty areas.
• If the module has tripped, first carefully remove any
load and check it for damage.
• If the equipment has been shut down, it must be
restarted.
BRUSH REMOVAL AND REPLACEMENT: It’s nor-
mal for the brushes and slip rings to wear and darken
slightly. Inspect the brushes when a generator over-
haul is necessary.
• The equipment needs to be operating at high idle
speed and any necessary adjustments made on the
control panel so that the equipment is providing at
least 80 volts to the receptacle input terminals.
• The circuit breaker for this receptacle must not be
tripped. Reset if necessary.
CAUTION
• Push the "Reset" button located on the GFCI module.
This will assure normal GFCI operation.
• Plug a night-light (with an "ON/OFF" switch) or other
product (such as a lamp) into the Duplex receptacle
and turn the product "ON".
• Do not attempt to polish slip rings while the
engine is running.
• Push the "Test" button located on the GFCI module.
The night-light or other product should go "OFF".
• Push the "Reset" button, again. The light or other
product should go "ON" again.
WARNING
• Service and Repair should only be performed by
Factory Trained Personnel. Unauthorized repairs
performed on this equipment may result in dan-
ger to the technician and machine operator and
will invalidate your factory warranty. For your
safety and to avoid Electrical Shock, please
observe all safety notes and precautions.
If the light or other product remains "ON" when the
"Test" button is pushed, the GFCI module is not work-
ing properly or has been incorrectly installed (miswired).
If your GFCI module is not working properly, contact a
qualified, certified electrician who can assess the situa-
tion, rewire the GFCI module if necessary or replace
the device.
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E-1
E-1
TROUBLESHOOTING
HOW TO USE TROUBLESHOOTING GUIDE
WARNING
Service and Repair should only be performed by Factory Trained Personnel. Unauthorized repairs
performed on this equipment may result in danger to the technician and machine operator and will
invalidate your factory warranty. For your safety and to avoid Electrical Shock, please observe all
safety notes and precautions detailed throughout this manual.
__________________________________________________________________________
This Troubleshooting Guide is provided to help you
locate and repair possible machine malfunctions.
Simply follow the three-step procedure listed below.
Step 3. RECOMMENDED COURSE OF ACTION
This column provides a course of action for the
Possible Cause, generally it states to contact your
local Authorized Field Service Facility.
Step 1. LOCATE PROBLEM (SYMPTOM).
Look under the column labeled “PROBLEM (SYMP-
TOMS)”. This column describes possible symptoms
that the machine may exhibit. Find the listing that
best describes the symptom that the machine is
exhibiting.
If you do not understand or are unable to perform the
Recommended Course of Action safely, contact your
local Authorized Field Service Facility.
Step 2. POSSIBLE CAUSE.
The second column labeled “POSSIBLE CAUSE” lists
the obvious external possibilities that may contribute
to the machine symptom.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
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E-2
E-2
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
Major Physical or Electrical Damage 1. Contact your local Authorized
is Evident.
Field Service Facility.
Engine will not "crank".
1. Battery is low, Charge Battery.
2. Loose battery cable connections.
Inspect, clean and tighten terminals.
3. Faulty engine starter motor.
Contact authorized local Engine
Service Shop.
Engine will "crank" but not start.
1. Fuel shut off valve on Main Fuel
Filter in the OFF position. Open
valve (vertical) position of handle.
2. Fuel Filters dirty/clogged. Check
and replace main filter element
and/or Inline Fuel Filter.
3. Out of fuel. Fill tank and bleed fuel
system.
4. High coolant temperature or low
oil pressure. (indictor lights lit)
I
f all recommended possible areas
Check oil and coolant levels. Fill if of misadjustment have been
required. Check for loose or bro- checked and the problem persists,
ken fan belt.
Contact your local Authorized
5. Faulty fuel shutdown solenoid. Field Service Facility.
Check that shutdown solenoid is
functioning properly and not bind-
ing/ contact authorized engine
service shop.
6. Faulty fuel pump. Check for fuel
flow through filters. Contact autho-
rized local Engine Service Shop.
Engine shuts down shortly after
starting.
1. High coolant temperature or low
oil pressure. (indictor light lit)
Change oil and oil filters and fill to
proper level. Check and fill coolant
level. Check for loose or broken
fan belt. Start engine and look for
leaks.
2. Faulty oil pressure switch or other
engine component. Contact
authorized local Engine Service
Shop.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
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E-3
E-3
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
Engine shuts down while under a 1. High radiator coolant tempera-
load.
ture. Reduce load if it is exceed-
ing machine rating. Add coolant
to system if low. Clean fins on
radiator if dirty. Tighten fan belt if
loose. Remove objects blocking
or close to intake openings on
both sides of base and exhaust
end (case back).
Engine runs rough.
1. Dirty fuel or air filters. Inspect and
clean/replace filters as needed.
Inspect and clean/replace filters
as needed.
2. Water in fuel. If water found in
tank. Empty fuel tank and refill
then purge fuel lines.
Battery does not stay charged.
1. Faulty battery. Replace.
Engine alternator trouble light is on 2. Loose connections at battery or
while machine is running.
alternator. Clean and tighten con-
nections.
If all recommended possible areas of
misadjustment have been checked
and the problem persists, Contact
your local Authorized Field
Service Facility.
3. Faulty engine alternator or charg-
er module. Consult authorized
Engine Service Shop.
Engine will not idle down to low 1. Idler switch in High idle position.
speed.
Set switch to Auto.
2. External load on welder or auxil-
iary power. Remove all external
loads.
3. Faulty Engine Control Unit or
Control P.C. board.
Engine will not go to high idle when 1. Poor work lead connection to
attempting to weld.
work. Make sure work clamp is
tightly connected to clean base
metal.
2. "Contactor" switch is in wrong
position. Set to "Welding On" when
welding without a control cable.
Refer to Operations chapter for prop-
er use of this switch.
3. Faulty Engine Control Unit or
Control P.C. board.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
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E-4
E-4
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
Engine will not go to high idle when 1. Auxiliary power load is less than
using auxiliary power.
100 watts. Idler may not respond
with less than a 100 watt load. Set
idler to "High".
2. Faulty sense toroid, Engine
Control Unit or Control P.C.
board.
Engine will not go to high idle 1. Faulty Engine Control Unit or
under weld or auxiliary loading. Control P.C. board.
Engine does not develop full 1. Fuel filter clogged, Replace.
power. Engine runs rough.
2. Air filter clogged, clean or replace.
3. High idle setting incorrect, check
and adjust if required.
4. Valves out of adjustment.
5. Fuel contaminated with water or
sediment. Check fuel pre-filter
and empty of water, bleed fuel
system. Replace fuel in tank if
needed.
I
f all recommended possible areas
Engine will not go to high idle when 1. Faulty Engine Control Unit or of misadjustment have been
attempting to weld or using auxil-
iary power. Switching to manual
high idle does not work.
Control P.C. board
checked and the problem persists,
Contact your local Authorized
Field Service Facility.
Engine will not shut off.
1. Fuel Shutdown solenoid not func-
tioning properly / linkage binding.
Stop engine by shutting off valve
located on main fuel filter.
Contact authorized local Engine
Service Shop.
Engine does not develop full power. 1. Fuel filter dirty/clogged. Replace.
Low weld and auxiliary output. 2. Air filter dirty/clogged. Replace Air
Engine runs rough.
Filter Element.
3. Fouled fuel injector(s). Contact
authorized Engine Service Shop.
4. Fuel contaminated with water.
Check water separator for water.
Clean and replace as needed.
Replace fuel in tank.
5. Cracked or loose fuel hose.
Replace hose and tighten clamps.
6. Valves out of adjustment. Contact
authorized local Engine Service
Shop.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
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E-5
E-5
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
No welding power output.
1. Poor work lead connection to
work. Make sure work clamp is
tightly connected to clean base
metal.
2. "Weld Terminals" switch in wrong
position. Place switch in "Weld
Terminals On" position when
welding without control cable.
3. Faulty PC board or welder alterna-
tor.
Welder has output but no control.
1. Poor remote/control cable connec-
tion to 3-pin or 14-pin connector.
Check connections.
2. Faulty remote cable or faulty wire
feeder or wire feeder cable.
Replace if necessary.
3. Faulty control potentiometer or PC
board.
I
f all recommended possible areas
Wire feeder does not work when 1. Wire Feeder Power circuit breaker of misadjustment have been
control cable is connected to 14 pin open. Check 42V beaker and checked and the problem persists,
connector.
reset if tripped.
Contact your local Authorized
2. Faulty control cable. Repair or
replace cable.
Field Service Facility.
3. Faulty wire feeder. Replace wire
feeder.
No auxiliary power.
1. Open circuit breakers. Reset
breakers. If breakers keep tripping
reduce power draw.
2. GFCI module may have tripped.
Follow “GFCI Module Testing and
Resetting Procedure” in the MAIN-
TENANCE section of this manual.
3. Faulty connections to auxiliary
receptacles. Check connections.
4. Faulty PC board or welder alterna-
tor.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
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E-6
E-6
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
The welding arc is “cold.” The weld- 1. Make sure the MODE selector
ing arc is not stable or is not satis- switch is in the correct position for
factory. the engine runs normally. the process being used. (For exam-
The auxiliary power is normal.
No output in Pipe Mode.
VRD Lights don’t light up.
ple, CV-WIRE, PIPE, CC-STICK.)
2. Make sure the electrode (wire, gas,
voltage, current etc.) is correct for
the process being used.
3. Check for loose or faulty connec-
tions at the weld output terminals
and welding cable connections.
4. The welding cables may be too long
or coiled, causing an excessive
voltage drop.
If all recommended possible areas of
misadjustment have been checked
and the problem persists, Contact
your local Authorized Field
Service Facility.
5. Faulty Control Board.
1. Make sure VRD ON/OFF toggle
switch is in the “OFF” position.
2. Poor work lead connection to
work. Make sure work clamp is
tightly connected to clean base
metal.
3. "Weld Terminals" switch in wrong
position. Place switch in "Weld
Terminals On" position when
welding without control cable.
4. Faulty PC board or welder alterna-
tor.
1. Ensure VRD ON/OFF switch is in
the “ON” position.
2. If light is burned out, replace both
VRD lights.
3. Faulty OCV indicator PC board.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
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F-1
F-1
DIAGRAMS
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F-2
F-2
DIAGRAMS
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F-3
F-3
DIAGRAMS
DX450 (RED-D-ARC)
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F-4
F-4
DIAGRAMS
DX450 (RED-D-ARC)
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F-5
F-5
DIAGRAMS
DX450 (RED-D-ARC)
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F-6
F-6
DIAGRAMS
DX450 (RED-D-ARC)
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F-7
F-7
WIRING DIAGRAM
+
+
+
V
9 1 G
1 G
V
+
3 R
1 4
N
0 2 0
4 2 3
1 3
5 2 6
2
2 3
5 G
C 8 2 0
2 5
7
2 A 2 6
0 4 5
2
2 6
0
2 5
6 2 1
2 6
V G 3 1
4 2 4
0
2 3
2 5
0
2 5
1 0 M
9 M
M 5
4 M
M 3
M 1
M 2
M 6
R 4
2
2 2
7
8
2 7
2 7
2 7 9
0
8
2 2
2 1
A
A
7 5
7 5
7 6
4
7 7
2
7
6
4
2 1
2 1
2 1
A 0 4 0
5
2 1
7 7
A
0
7 6
4 0
A 0 4 0
A 0 4 0
0
M 1
M 5
M 4
M 3
M 2
M 1
M 9
M 6
I
+
DX450 (RED-D-ARC)
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F-8
F-8
DIMENSION PRINT
DX450 (RED-D-ARC)
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NOTES
DX450 (RED-D-ARC)
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NOTES
DX450 (RED-D-ARC)
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G Do not touch electrically live parts or
electrode with skin or wet clothing.
G Insulate yourself from work and
ground.
G Keep flammable materials away.
G Wear eye, ear and body protection.
WARNING
Spanish
G No toque las partes o los electrodos G Mantenga el material combustible
G Protéjase los ojos, los oídos y el
bajo carga con la piel o ropa moja-
da.
G Aislese del trabajo y de la tierra.
fuera del área de trabajo.
cuerpo.
AVISO DE
PRECAUCION
French
G Ne laissez ni la peau ni des vête-
ments mouillés entrer en contact
avec des pièces sous tension.
G Gardez à l’écart de tout matériel
inflammable.
G Protégez vos yeux, vos oreilles et
votre corps.
ATTENTION
G Isolez-vous du travail et de la terre.
German
G Berühren Sie keine stromführenden
Teile oder Elektroden mit Ihrem
Körper oder feuchter Kleidung!
G Isolieren Sie sich von den
G Entfernen Sie brennbarres Material! G Tragen Sie Augen-, Ohren- und Kör-
perschutz!
WARNUNG
Elektroden und dem Erdboden!
Portuguese
G Não toque partes elétricas e elec-
trodos com a pele ou roupa molha-
da.
G Mantenha inflamáveis bem guarda- G Use proteção para a vista, ouvido e
dos.
corpo.
ATENÇÃO
G Isole-se da peça e terra.
Japanese
Chinese
Korean
Arabic
READ AND UNDERSTAND THE MANUFACTURER’S INSTRUCTION FOR THIS EQUIPMENT AND THE CONSUMABLES TO BE
USED AND FOLLOW YOUR EMPLOYER’S SAFETY PRACTICES.
SE RECOMIENDA LEER Y ENTENDER LAS INSTRUCCIONES DEL FABRICANTE PARA EL USO DE ESTE EQUIPO Y LOS
CONSUMIBLES QUE VA A UTILIZAR, SIGA LAS MEDIDAS DE SEGURIDAD DE SU SUPERVISOR.
LISEZ ET COMPRENEZ LES INSTRUCTIONS DU FABRICANT EN CE QUI REGARDE CET EQUIPMENT ET LES PRODUITS A
ETRE EMPLOYES ET SUIVEZ LES PROCEDURES DE SECURITE DE VOTRE EMPLOYEUR.
LESEN SIE UND BEFOLGEN SIE DIE BETRIEBSANLEITUNG DER ANLAGE UND DEN ELEKTRODENEINSATZ DES HER-
STELLERS. DIE UNFALLVERHÜTUNGSVORSCHRIFTEN DES ARBEITGEBERS SIND EBENFALLS ZU BEACHTEN.
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G Keep your head out of fumes.
G Use ventilation or exhaust to
remove fumes from breathing zone.
G Turn power off before servicing.
G Do not operate with panel open or
guards off.
WARNING
Spanish
G Los humos fuera de la zona de res-
piración.
G Mantenga la cabeza fuera de los
humos. Utilice ventilación o
aspiración para gases.
G Desconectar el cable de ali-
mentación de poder de la máquina
antes de iniciar cualquier servicio.
G No operar con panel abierto o
guardas quitadas.
AVISO DE
PRECAUCION
French
G Débranchez le courant avant l’entre- G N’opérez pas avec les panneaux
tien.
G Gardez la tête à l’écart des fumées.
G Utilisez un ventilateur ou un aspira-
teur pour ôter les fumées des zones
de travail.
ouverts ou avec les dispositifs de
protection enlevés.
ATTENTION
German
G Strom vor Wartungsarbeiten
abschalten! (Netzstrom völlig öff-
nen; Maschine anhalten!)
G Anlage nie ohne Schutzgehäuse
oder Innenschutzverkleidung in
Betrieb setzen!
G Vermeiden Sie das Einatmen von
Schweibrauch!
G Sorgen Sie für gute Be- und
Entlüftung des Arbeitsplatzes!
WARNUNG
Portuguese
G Não opere com as tampas removidas.
G Desligue a corrente antes de fazer
serviço.
G Mantenha-se afastado das partes
moventes.
G Não opere com os paineis abertos
ou guardas removidas.
G Mantenha seu rosto da fumaça.
G Use ventilação e exhaustão para
remover fumo da zona respiratória.
ATENÇÃO
G Não toque as partes elétricas nuas.
Japanese
Chinese
Korean
Arabic
LEIA E COMPREENDA AS INSTRUÇÕES DO FABRICANTE PARA ESTE EQUIPAMENTO E AS PARTES DE USO, E SIGA AS
PRÁTICAS DE SEGURANÇA DO EMPREGADOR.
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• World's Leader in Welding and Cutting Products •
• Sales and Service through Subsidiaries and Distributors Worldwide •
Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEB SITE: www.lincolnelectric.com
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