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FOR ENGINE
powered equipment.

1.a. Turn the engine off before troubleshooting and maintenance

work unless the maintenance work requires it to be running.

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1.b. Operate engines in open, well-ventilated

areas or vent the engine exhaust fumes
outdoors.

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1.c. Do not add the fuel near an open flame

welding arc or when the engine is running.
Stop the engine and allow it to cool before
refueling to prevent spilled fuel from vaporiz-
ing on contact with hot engine parts and
igniting. Do not spill fuel when filling tank. If
fuel is spilled, wipe it up and do not start
engine until fumes have been eliminated.

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1.d. Keep all equipment safety guards, covers and devices in

position and in good repair.Keep hands, hair, clothing and
tools away from V-belts, gears, fans and all other moving
parts when starting, operating or repairing equipment.

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1.e. In some cases it may be necessary to remove safety

guards to perform required maintenance. Remove
guards only when necessary and replace them when the
maintenance requiring their removal is complete.
Always use the greatest care when working near moving
parts.

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1.f. Do not put your hands near the engine fan.

Do not attempt to override the governor or
idler by pushing on the throttle control rods
while the engine is running.

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1.g. To prevent accidentally starting gasoline engines while

turning the engine or welding generator during maintenance
work, disconnect the spark plug wires, distributor cap or
magneto wire as appropriate.

i

SAFETY

i

ARC WELDING CAN BE HAZARDOUS. PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH.
KEEP CHILDREN AWAY. PACEMAKER WEARERS SHOULD CONSULT WITH THEIR DOCTOR BEFORE OPERATING.

Read and understand the following safety highlights. For additional safety information, it is strongly recommended that you
purchase a copy of “Safety in Welding & Cutting - ANSI Standard Z49.1” from the American Welding Society, P.O. Box
351040, Miami, Florida 33135 or CSA Standard W117.2-1974. A Free copy of “Arc Welding Safety” booklet E205 is available
from the Lincoln Electric Company, 22801 St. Clair Avenue, Cleveland, Ohio 44117-1199.

BE SURE THAT ALL INSTALLATION, OPERATION, MAINTENANCE AND REPAIR PROCEDURES ARE
PERFORMED ONLY BY QUALIFIED INDIVIDUALS.

WARNING

Mar ʻ95

ELECTRIC AND
MAGNETIC FIELDS
may be dangerous

2.a. Electric current flowing through any conductor causes

localized Electric and Magnetic Fields (EMF). Welding
current creates EMF fields around welding cables and
welding machines

2.b. EMF fields may interfere with some pacemakers, and

welders having a pacemaker should consult their physician
before welding.

2.c. Exposure to EMF fields in welding may have other health

effects which are now not known.

2.d. All welders should use the following procedures in order to

minimize exposure to EMF fields from the welding circuit:

2.d.1. Route the electrode and work cables together - Secure

them with tape when possible.

2.d.2. Never coil the electrode lead around your body.

2.d.3. Do not place your body between the electrode and

work cables. If the electrode cable is on your right
side, the work cable should also be on your right side.

2.d.4. Connect the work cable to the workpiece as close as

possible to the area being welded.

2.d.5. Do not work next to welding power source.

1.h. To avoid scalding, do not remove the

radiator pressure cap when the engine is
hot.

CALIFORNIA PROPOSITION 65 WARNINGS

Diesel engine exhaust and some of its constituents
are known to the State of California to cause can-
cer, birth defects, and other reproductive harm.

The engine exhaust from this product contains
chemicals known to the State of California to cause
cancer, birth defects, or other reproductive harm.

The Above For Diesel Engines

The Above For Gasoline Engines

Summary of Contents for Magnum 450WC

Page 1: ...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 Fast Mate Water Coo...

Page 2: ...WEARERS SHOULD CONSULT WITH THEIR DOCTOR BEFORE OPERATING Read and understand the following safety highlights For additional safety information it is strongly recommended that you purchase a copy of...

Page 3: ...er 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...

Page 4: ...easily go through small cracks and openings to adjacent areas Avoid welding near hydraulic lines Have a fire extinguisher readily available 6 b Where compressed gases are to be used at the job site sp...

Page 5: ...i s et non inflammables 4 Des gouttes de laitier en fusion sont mises de l arc de soudage Se prot ger avec des v tements de protection libres de l huile tels que les gants en cuir chemise paisse pan t...

Page 6: ...mportant when identifying the correct replacement parts On Line Product Registration Register your machine with Lincoln Electric either via fax or over the Internet For faxing Complete the form on the...

Page 7: ...endable Replacement Parts Section C __________________________________________________________________________________________ Maintenance Section D Cable Cleaning D 1 Gun Tube Replaceable Parts D 1 R...

Page 8: ...duty cycle with mixed argon shielding gases There are several models of guns designed for gas metal arc welding GMAW with 035 1 16 9mm 1 6mm solid electrodes and gas shielded flux cored arc welding F...

Page 9: ...en connect ing the hoses to the water supply the WATER IN BLUE HOSE must be connected to the water out connector on the wire feeder The WATER OUT RED HOSE must be connected to the receptacle marked wa...

Page 10: ...WELDING SPARKS can cause fire or explosion Keep flammable material away ARC RAYS can burn Wear eye ear and body protection B 1 OPERATION B 1 a Check that the welding power source is on and that the sh...

Page 11: ...7 7B1 1 16A 1 6A mm KP2067 10B1 5 64 2 0 mm GAS DIFFUSER KP2059 1 INSULATOR KP2060 1 GAS NOZZLE Flush KP1957 1 0 39 10 mm Flush KP1957 2 0 51 13 mm Flush KP1957 3 0 59 15 mm 12 3 mm Recess KP1957 4 0...

Page 12: ...e a thread it can be unscrewed from the gun tube Refer to Figure E 1 b The nozzle holder can be replaced if the threads are damaged Remove the diffuser and gun tube insulation disk refer to a and Figu...

Page 13: ...MED LINER INTO THE BACK END OF THE GUN 4 SEAT LINER BUSHING INTO THE BACK OF THE GUN SECURE 3 CHECK THE LINER FOR CORRECT WIRE SIZE AND INSERT AN REMOVE THE LINER NUT FROM THE CONNECTOR END OF THE CAB...

Page 14: ...E GUN UNTIL THE STEEL END OF THE LINER IS FULLY INSERTED INTO THE DIFFUSER 3 MARK THE LINER 3 16 5mm FROM THE END OF THE LINER GUIDE PULL THE LINER PARTIALLY OUT AND CUT OFF THE LINER AT THE MARK USIN...

Page 15: ...IBLE CAUSE lists the obvious external possibilities that may contribute to the machine symptom Step 3 RECOMMENDED COURSE OF ACTION This column provides a course of action for the Possible Cause genera...

Page 16: ...wire will not feed or wire feeding is rough 2 Variable or hunting arc A Gun cable kinked and or twisted B Wire jammed in gun and cable C Incorrect drive rolls and guide tubes D Gun cable liner dirty...

Page 17: ...NCTION PROBLEMS PROBLEMS SYMPTOMS POSSIBLE CAUSE RECOMMENDED COURSE OF ACTION 3 Poor arc striking with sticking or blast offs weld porosity narrow and ropy looking bead or elec trode stubbing into pla...

Page 18: ...NOTES MAGNUM 450WC 650WC...

Page 19: ...parts or electrode with skin or wet clothing G Insulate yourself from work and ground G No toque las partes o los electrodos bajo carga con la piel o ropa moja da G Aislese del trabajo y de la tierra...

Page 20: ...nd Entl ftung des Arbeitsplatzes G Mantenha seu rosto da fuma a G Use ventila o e exhaust o para remover fumo da zona respirat ria G Turn power off before servicing G Desconectar el cable de ali menta...

Page 21: ...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 World s Leader in Welding and Cutting Pr...

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