Lincoln Electric MAGNUM PRO 350 Operator'S Manual Download Page 2

THANK YOU FOR SELECTING 

A QUALITY PRODUCT BY 

LINCOLN  ELEC  TRIC. 

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.

SAFETY DEPENDS ON YOU

Lincoln arc welding and cutting equipment 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.

This statement appears where the information must be followed
exactly to avoid serious personal injury or loss of life.

This statement appears where the information must be followed
to avoid minor personal injury or damage to this equipment.

KEEP YOUR HEAD OUT OF THE FUMES.

DON’T

get too close to the arc.

Use corrective lenses if necessary
to stay a reasonable distance
away from the arc.

READ

and obey the Safety Data

Sheet (SDS) and the warning label
that appears on all containers of
welding materials.

USE ENOUGH VENTILATION

or

exhaust at the arc, or both, to
keep the fumes and gases from 
your breathing zone and the general area.

IN A LARGE ROOM OR OUTDOORS

, natural ventilation may be

adequate if you keep your head out of the fumes (See below).

USE NATURAL DRAFTS

or fans to keep the fumes away 

from your face.

If you de velop unusual symptoms, see your supervisor. 
Perhaps the welding atmosphere and ventilation system 
should be checked.

WEAR CORRECT EYE, EAR & 
BODY PROTECTION

PROTECT

your eyes and face with welding helmet

properly fitted and with proper grade of filter plate
(See ANSI Z49.1).

PROTECT

your body from welding spatter and arc

flash with protective clothing including woolen
clothing, flame-proof apron and gloves, leather
leggings, and high boots.

PROTECT

others from splatter, flash, and glare

with protective screens or barriers.

IN SOME AREAS

, protection from noise may be appropriate.

BE SURE

protective equipment is in good condition.

Also, wear safety glasses in work area

AT ALL TIMES.

SPECIAL SITUATIONS

DO NOT WELD OR CUT

containers or materials which previously

had been in contact with hazardous substances unless they are
properly cleaned. This is extremely dangerous.

DO NOT WELD OR CUT

painted or plated parts unless special

precautions with ventilation have been taken. They can release
highly toxic fumes or gases.

Additional precautionary measures

PROTECT

compressed gas cylinders from excessive heat,

mechanical shocks, and arcs; fasten cylinders so they cannot fall.

BE SURE

cylinders are never grounded or part of an 

electrical circuit.

REMOVE 

all potential fire hazards from welding area.

ALWAYS HAVE FIRE FIGHTING EQUIPMENT READY FOR

IMMEDIATE USE AND KNOW HOW TO USE IT.

WARNING

CAUTION

Safety 01 of 04 - 5/16/2018

Summary of Contents for MAGNUM PRO 350

Page 1: ...www lincolnelectric com locator IM10113 A Issue Date Dec 15 Lincoln Global Inc All Rights Reserved For use with machines having Code Numbers K3131 K3134 K3132 K3135 K3133 K3136 Save for future refere...

Page 2: ...A LARGE ROOM OR OUTDOORS natural ventilation may be adequate if you keep your head out of the fumes See below USE NATURAL DRAFTS or fans to keep the fumes away from your face If you develop unusual s...

Page 3: ...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 1 d Keep all equipment safety guards covers and...

Page 4: ...m to ANSI Z87 I standards 4 b Use suitable clothing made from durable flame resistant material to protect your skin and that of your helpers from the arc rays 4 c Protect other nearby personnel with s...

Page 5: ...nt passing through lifting chains crane cables or other alternate circuits This can create fire hazards or overheat lifting chains or cables until they fail 6 h Also see item 1 c 6 I Read and follow N...

Page 6: ...lation B 3 Connection to Feeder B 3 Connection to Lincoln Feeders B 3 Connection to Tweco Adapted Feeders B 4 Connection to Miller Feeders B 4 Connection to Lincoln Wirematic Hobart Series 2000 or SP1...

Page 7: ...th a feeder end connector With the K466 1 Magnum Connector Kit they can be used with any Lincoln LN 7 or LN 25 semiautomatic wire feeder The K466 1 should also be used with the LN 8 or LN 9 when feedi...

Page 8: ...TH MIXED GAS Description Gun Contact Tips Gas Product Cable Wire Size Standard Diffuser Gas Cable Gun Tube Number Length m in mm Duty Assembly Nozzle Insulator Liner 60 K3132 1 10 ft 035 0 9 3 1 5 64...

Page 9: ...H MIXED GAS Description Gun Contact Tips Gas Product Cable Wire Size Standard Diffuser Gas Cable Gun Tube Number Length m in mm Duty Assembly Nozzle Insulator Liner 60 K3135 1 10 ft 035 0 9 3 1 1 8 3...

Page 10: ...e kit The includ ed wrench will fit both the gas plug and barbed fit ting MAGNUM PRO 350 450 AND 550 DUAL PROCEDURE DUAL SCHEDULE WARNING c Attach the round connector of the gun control cable provided...

Page 11: ...ROCEDURE DUAL SCHEDULE K466 7 and K466 10 Installation Hobart Series 2000 Feeders and Lincoln 10 Series Feeders a Remove brass cable connector see Figure B 1 from the connector kit and screw it onto t...

Page 12: ...per nozzle should be selected based on the welding application Different length nozzles are available to fit 350 450 and 550 amp gun tubes to allow either spray or short circuiting transfer weld ing C...

Page 13: ...ocket on the gun cable con nector handle CONNECTION TO HOBART SERIES 2000 FEEDERS Gun cable assemblies which were assembled with a K466 7 Connection Kit will connect easily to a feeder a Check that th...

Page 14: ...ork d Lower welding helmet close gun trigger and begin welding Hold the gun so the contact tip to work dis tance gives the correct electrical stickout as required for the procedure being used e To sto...

Page 15: ...s of arc time or as required c To remove gun tube from gun loosen socket head clamping screw in handle with 3 16 4 8 mm Allen wrench Remove gas nozzle and nozzle insulator Pull gun tube out from gun h...

Page 16: ...e of the cable past the damaged section f For DS models Cut off damaged section of cable and strip off the outer jacket 3 50 88 9 back Be careful not to cut the insulation on the control wires while s...

Page 17: ...nst the shoulder pull the connector nut over the copper strands engage the gun tube connector threads and tighten in place See Figure E 3 CABLE BOOT CONNECTOR ASSEMBLY GUN HOUSING CONTROL WIRES TRIGGE...

Page 18: ...k Assemble cable in left side of gun handle Assemble trigger into the proper handle cavity For DP also assemble the rocker switch in the grooves provided in the handle Assemble right side of gun handl...

Page 19: ...e connector and into core of cable approximately 5 00 127 mm when pushing the connector tube into the cable core tube To tight en hold the connector in place while turning the nut then remove the rod...

Page 20: ...column labeled POSSIBLE 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 Po...

Page 21: ...Worn or improper size cable liner 8 Partially flashed melted or improper size contact tip 1 Contact tip worn or incorrect size 2 Worn or undersize work cables or poor ground connections 3 Loose elect...

Page 22: ...e to prolonged or excessive high current and or duty cycle welding 1 See Gas Metal Arc Welding Guide GS100 2 Clean gas cone Make certain that gas diffuser is not restricted Make certain that gas cylin...

Page 23: ...NOTES MAGNUM PRO 350 450 AND 550 DUAL PROCEDURE DUAL SCHEDULE...

Page 24: ...NOTES MAGNUM PRO 350 450 AND 550 DUAL PROCEDURE DUAL SCHEDULE...

Page 25: ...parts or electrode with skin or wet clothing l Insulate yourself from work and ground l No toque las partes o los electrodos bajo carga con la piel o ropa moja da l Aislese del trabajo y de la tierra...

Page 26: ...d Entl ftung des Arbeitsplatzes l Mantenha seu rosto da fuma a l Use ventila o e exhaust o para remover fumo da zona respirat ria l Turn power off before servicing l Desconectar el cable de ali mentac...

Page 27: ...tomer 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 information or...

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