Lincoln Electric AC-235 Manual Download Page 1

AC-235
WELDING POWER SOURCE

by

IM556

May, 2004

Contents

Page

Safety Precautions ...............................................................................................2

Installation and Operating Instructions

for AC-235 ...................................................................................................7
Includes safety, installation, operating instructions
and parts lists.

Learning to Weld ...............................................................................................11

Using the Carbon Arc Torch..............................................................................18

Includes for heating metal, welding aluminum or
brazing with an arc torch.

Selecting Electrodes ..........................................................................................23

Brief descriptions of the types and operating
data for all Lincoln electrodes.

Welding Books and Teaching Aids ...................................................................25

• 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

• World's Leader in Welding and Cutting Products •

Copyright © 2004 Lincoln Global Inc.

This manual covers equipment which is no 
longer in production by The Lincoln Electric Co.  
Specifications and availability of optional 
features may have changed.

Summary of Contents for AC-235

Page 1: ...g Electrodes 23 Brief descriptions of the types and operating data for all Lincoln electrodes Welding Books and Teaching Aids 25 Sales and Service through Subsidiaries and Distributors Worldwide Cleve...

Page 2: ...ctrode electrode reel welding head nozzle or semiautomatic welding gun are also electrically hot 1 d Always be sure the work cable makes a good electrical connection with the metal being welded The co...

Page 3: ...welding sparks from starting a fire 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 Hav...

Page 4: ...outdoors ____________________________________________________ 7 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 refuelin...

Page 5: ...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 pantalons sans...

Page 6: ...on below for future reference This information can be found on your machine nameplate Product _________________________________________________________________________________ Model Number ___________...

Page 7: ...frame when the welder plug is inserted into the receptacle If a separate dis connect switch is used it should have two poles for the two hot lines and both should be fused for 50 amperes Attaching El...

Page 8: ...play after switching to a new position This wip ing action keeps the contacts free from dirt and oxides Duty Cycle The AC 235 is rated for 20 duty cycle on all switch posi tions except maximum 235 amp...

Page 9: ...9 NOTES...

Page 10: ...ription number required the welder name model number and code number 1 2 3 4 5 6 7 8 10 11 12 13 14 15 16 17 18 19 20 21 22 Item Description 1A Fan Motor 1B Fan Blade 2 Case 3 Nameplate 4 Warning Deca...

Page 11: ...g the tip of the electrode 1 16 1 8 away from the work or base metal being welded The electric arc is established in this gap and is held and moved along the joint to be welded melting the metal as it...

Page 12: ...Welding Position Beginners will find it easier to learn how to control the welding arc using the two handed technique shown below This requires the use of a headshield a Hold the electrode holder in...

Page 13: ...fies 4 Run beads on a flat plate Run them parallel to the top edge the edge farthest away from you This gives you practice in running straight welds and also it gives you an easy way to check your pro...

Page 14: ...iginal metal Fillet Welds When welding fillet welds it is very important to hold the electrode at a 45 angle between the two sides or the metal will not distribute itself evenly To make it easy to get...

Page 15: ...down welds are applied at a fast pace These welds are therefore shallow and narrow and as such are excellent for sheet metal Do not use the vertical down technique on heavy metal The welds will not be...

Page 16: ...about one inch 25mm from the sharp edge 4 The bead should be put on with a weaving motion and it should be 1 2 to 3 4 12 7 to 19mm wide Do not let the arc blow over the edge as that will dull the edg...

Page 17: ...l slowly 2 He can weld 1 2 12 7mm at a time and not weld at that spot again until the weld is completely cool to the touch In this way no large amount of heat is put into the mass Most inexperienced w...

Page 18: ...ORCH Welding Aluminum and Copper Alloys Brazing and Soldering Heating Bending and Straightening Required Equipment 1 A Lincoln Carbon Arc Torch L 2645 Its rating is 100 amperes 2 1 4 5 16 or 3 8 6 4 7...

Page 19: ...reversing the thumb control setting to spread the carbons 1 16 to 3 16 1 6 to 4 8mm apart As the carbons burn away use the thumb control to maintain the desired arc When the proper arc can no longer b...

Page 20: ...ns 5 Play the arc 3 to 4 75 to 100mm up and down the joint at the start This preheat helps to give a smoother bead and an easier start when the filler rod is applied 6 Move the torch to the beginning...

Page 21: ...y be classified into the following groups Out of Position Group E6011 This group includes electrodes which have a snappy deep penetrating arc and fast freezing deposits These electrodes are used for g...

Page 22: ...and V butts Also sometimes used with fill freeze and low hydrogen electrodes to make the first pass on these joints Motion D is a triangular weave used with fill freeze and low hydrogen electrodes to...

Page 23: ...225 Pink E7010 A1 Shield Arc 85P DC 140 225 Tan E7010 G Shield Arc HYP DC 75 130 90 185 140 225 160 250 Gray E8010 G Shield Arc 70 DC 75 130 90 185 140 225 Gray Brown E8018 C1 Jet LH 8018 C1 DC 90 150...

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Page 26: ...electrically live parts or electrode with skin or wet clothing Insulate yourself from work and ground No toque las partes o los electrodos bajo carga con la piel o ropa moja da Aislese del trabajo y...

Page 27: ...e Be und Entl ftung des Arbeitsplatzes Mantenha seu rosto da fuma a Use ventila o e exhaust o para remover fumo da zona respirat ria Turn power off before servicing Desconectar el cable de ali mentaci...

Page 28: ...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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