Lincoln Electric IM812-A - Manual

Page 2 - SAFETY; WARNING; CALIFORNIA PROPOSITION 65 WARNINGS; The Above For Diesel Engines

FOR ENGINEpowered equipment. 1.a. Turn the engine off before troubleshooting and maintenance work unless the maintenance work requires it to be running. ____________________________________________________ 1.b. Operate engines in open, well-ventilated areas or vent the engine exhaust fumes outdoors....

Page 5 - PRÉCAUTIONS DE SÛRETÉ

iv SAFETY iv Mar. ‘93 PRÉCAUTIONS DE SÛRETÉ 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: Sûreté Pour Soudage A L’Arc 1. Protegez-vous contr...

Page 6 - Thank You; Please Examine Carton and Equipment For Damage Immediately

v v Thank You for selecting a QUALITY product by Lincoln Electric. We want you to take pride in operating this Lincoln Electric Company product••• as much pride as we have in bringing this product to you! Read this Operators Manual completely before attempting to use this equipment. Save this manual...

Page 7 - TABLE OF CONTENTS

vi vi TABLE OF CONTENTS Page INSTALLATION SECTION ......................................................................................................................A Technical Specifications ............................................................................................................

Page 8 - INSTALLATION; OPERATING ARC VOLTAGE

A-1 INSTALLATION LN-35 A-1 TEMPERATURE RANGE OPERATION: - 40 o C to +40 o C (- 40 o F to +104 o F) STORAGE: - 40 o C to +85 o C (- 40 o F to +185 o F) OPERATING ARC VOLTAGE Constant Voltage (CV) or 15-40 VDC (110VDC Maximum OCV) Constant Current (CC) RATED CURRENT Rated current 500 Amps 60% Duty Cyc...

Page 9 - SAFETY PRECAUTIONS

A-2 INSTALLATION LN-35 A-2 ELECTRIC SHOCK can kill. • Do not operate with covers removed. • Turn off power source before installing or servicing. • Do not touch electrically hot parts. • Turn the input power to the welding power source off at thefuse box before working in theterminal strip. • Only q...

Page 11 - WELD CABLE CONNECTION; ELECTRODE CABLE CONNECTION; DRIVE ROLL INSTALLATION

A-4 INSTALLATION LN-35 A-4 WELD CABLE CONNECTION The size of the electrode cable and work cable mustbe sufficient for the maximum weld current and totalcable length to be used. Refer to table A.1. TABLE A.1 Total Cable Length Weld Current 60% Duty Cycle 50’-100’ 100’-150’ 150’-200’ 200’-250’ 200Amps...

Page 12 - OPERATION; GENERAL DESCRIPTION

B-1 OPERATION LN-35 B-1 ELECTRIC SHOCK can kill. • Do not touch electrically live part or electrode withskin or wet clothing. • I n s u l a t e y o u r s e l f f r o m work and ground. • Always wear dry insulat- ing gloves. ARC RAYS can burn. • W e a r e y e , e a r a n d b o d y protection. -------...

Page 13 - WIRE REEL LOADING – 50 AND 60 LB

B-2 OPERATION B-2 LN-35 TO MOUNT A 50 OR 60 LB COIL: 1. To remove the wire reel from its shaft. 2. Lay the reel flat on the floor. Loosen the spinner n u t a n d r e m o v e t h e c o v e r p l a t e . S e e F i g u r eB.1. 3. P l a c e t h e c o i l o f e l e c t r o d e o n t h e r e e l s o i t u...

Page 14 - IDLE ROLL PRESSURE SETTING

B-3 OPERATION B-3 e. Press the gun trigger and push the electrode until it just enters the drive roll. When inching with gun trigger, the electrode anddrive mechanism are always “hot” to work andground. --------------------------------------------------------------------- f. Inch the electrode throu...

Page 15 - PRESETTING WIRE FEED SPEED

B-4 OPERATION B-4 LN-35 PRESETTING WIRE FEED SPEED The LN-35 permits accurate presetting of the desiredwire feed speed, before welding, in both CV and CCwire feed modes. S E T T I N G C O N S T A N T W I R E F E E D S P E E D (CVMODE) a. Set Wire Feed Mode switch to CV position. b. S e t W i r e F e...

Page 16 - MAKING A WELD

B-5 OPERATION B-5 MAKING A WELD SETUP a. Connect work cable to metal to be welded. Work cable must make good electrical contact to thework. The work must also be grounded as statedin “Arc Welding Safety Precautions.” b. Check that the LN-35 is properly connected to the power source for the polarity ...

Page 17 - PROCEDURE AT END OF COIL

B-6 OPERATION B-6 a. C u t t h e e l e c t r o d e w i t h i n a p p r o x i m a t e l y 3/8”(9.5mm) of the end of the contact tip for solidwire and within approximately 3/4”(19.1mm) of theextension guide for cored wire. b. P o s i t i o n e l e c t r o d e o v e r j o i n t . E n d o f e l e c t r ...

Page 18 - AUTOMATIC PROTECTION; OVERVOLTAGE SHUTDOWN

B-7 OPERATION B-7 CC (formerly VV) power sources, on the other hand,permit the arc voltage to decrease with increases inwelding current. The output characteristics of thesepower sources can range from a “drooping slope,”which provide minor arc voltage changes with weldcurrent variations, to “steep s...

Page 19 - MAINTENANCE

D-1 MAINTENANCE D-1 LN-35 SAFETY PRECAUTIONS Have qualified personnel do the maintenancework. Turn the engine off before working insidet h e m a c h i n e . I n s o m e c a s e s , i t m a y b enecessary to remove safety guards to performr e q u i r e d m a i n t e n a n c e . R e m o v e g u a r d ...

Page 21 - TROUBLESHOOTING; CAUTION; HOW TO USE TROUBLESHOOTING GUIDE

E-1 TROUBLESHOOTING E-1 LN-35 If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed. CAUTION This Troubleshooting Guide is...

Page 22 - PROBLEMS

E-2 TROUBLESHOOTING E-2 LN-35 Observe all Safety Guidelines detailed throughout this manual If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assist...

Page 24 - DIAGRAMS; IR

F-1 DIAGRAMS F-1 LN-35 63 2 63 3 63 1 10 KW R1 W IRE SPEED CONT ROL RH EOST AT S3 S1 TO WORK CABL E BL ACK POS 667 62 1 NEG A B C D E 62 2A 50 0A J5 TRIGGER CO N NECTO R 7 * * J3 J14 3 2 1 4 2 1 3 4 62 1 50 0A 667 622A } } * * J2 J1 3 6 1 4 10 8 11 2 9 509 632 523 522 633 523 524 631 BLA CK BLU E RE...

Page 25 - NOTES