Lincoln Electric IM666-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 .......................................................................................................A...

Page 8 - INSTALLATION; TECHNICAL SPECIFICATIONS - Tandem MIG Torch

A-1 INSTALLATION TANDEM MIG TORCH A-1 TECHNICAL SPECIFICATIONS - Tandem MIG Torch Product Number G3494-2, 2A G3494-3, 3A G3494-4, 4A G3494-5, 5A G3494-6, 6A Gun Cable Length 4 ft (1.2 m) 6 ft (1.8 m) 8 ft (2.4 m) 10 ft (3.0 m) 12 ft (3.6m) 65 scfh (31 liters/min) minimum .45 gal/min at 40 psi (1700 ...

Page 9 - GENERAL DESCRIPTION; DESIGN SUMMARY; TORCH CASE

A-2 INSTALLATION TANDEM MIG TORCH A-2 GENERAL DESCRIPTION The Tandem MIG torch delivers two wire electrodes tothe weld pool. The wires are insulated from each otherfor the purpose of independent arc regulation. Whenwelding, the wires or arcs are oriented one behind theother. The torch provides a sma...

Page 10 - CABLE ASSEMBLY

A-3 INSTALLATION TANDEM MIG TORCH A-3 CABLE ASSEMBLY Three cable assemblies deliver the necessary powerand cooling fluids to the torch. a) G3494-X Series: Two of the cable assemblies supply power, wire andwater cooling to each side of the torch. The thirdb u n d l e i s m a d e u p o f t h e n o z z...

Page 12 - WATER COOLING EQUIPMENT

A-5 INSTALLATION TANDEM MIG TORCH A-5 b) Push the end connector from torch into K489-7 Fast-Mate adapter on the wire feeder, and thentighten the locking nut. Do this for both of the torchpower cables. c) Attach the water lines from the torch power cables to a supply of cooling water. d) Connect the ...

Page 13 - MOUNTING THE TORCH

A-6 INSTALLATION TANDEM MIG TORCH A-6 MOUNTING THE TORCH Always insulate the torch from any equipment orfixturing. Use M19190 Bracket Arm to Torch Body Insulator if necessary. (See Figure 4, Torch mountingdimensions) Check to make sure the cables are free to flex and donot get tangled or caught on o...

Page 14 - WIRE STRAIGHTENERS; TAIL GAS COVERAGE; WORK LEAD; SEAM TRACKING

WIRE STRAIGHTENERS Use a wire straightener with each wire drive. Failure to use a wire straightener may result in inconsis-tent welds and weld bead placement. TAIL GAS COVERAGE The Tandem Mig process is capable of establishingwide weld bead profiles at higher than usual travelspeeds. When performing...

Page 15 - OPERATION; ELECTRODES AND EQUIPMENT; SHIELDING GAS DELIVERY

B-1 OPERATION TANDEM MIG TORCH B-1 ELECTRODES AND EQUIPMENT TheTandem MIG torch has been designed for usewith 0.035" through 5/64" (0.9 mm to 1.9 mm) Lincolnsolid steel MIG wires and metal core wires. Refer tot h e a p p r o p r i a t e L i n c o l n P r o c e s s a n d P r o c e d u r eGuid...

Page 16 - ACCESSORIES

C-1 ACCESSORIES C-1 GENERAL OPTIONS / ACCESSORIES The following options/accessories are available fory o u r T a n d e m M I G T o r c h f r o m y o u r l o c a l L i n c o l nDistributor. K489-7 Connector Kit - Magnum Fast-Mate Adapter Liners Steel, Stainless and Metal Cored Electrodes S24198-10 .0...

Page 17 - TORCH SHIELD REPLACEMENT; S e e a d d i t i o n a l w a r n i n g i n f o r m a t i o n; MAINTENANCE

D-1 MAINTENANCE D-1 TORCH SHIELD REPLACEMENT It is important that the torch shield be inspected andr e p l a c e d o n a r o u t i n e b a s i s . T h e t o r c h s h i e l d s(S24432, -1, -A, -1A) are designed to protect the moreexpensive overmolded assembly of the Tandem torchfrom arc and heat ind...

Page 18 - CONTACT TIP REPLACEMENT

D-2 MAINTENANCE D-2 CONTACT TIP REPLACEMENT Each application will dictate the frequency of contacttip replacement. Higher amperage higher duty cycleo p e r a t i o n s w i l l r e q u i r e m o r e f r e q u e n t c o n t a c t t i preplacement. The condition of the contact tip greatlyeffects the we...

Page 19 - TROUBLESHOOTING; CAUTION; HOW TO USE TROUBLESHOOTING GUIDE

E-1 TROUBLESHOOTING E-1 TANDEM MIG TORCH 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 Troubleshooti...

Page 20 - PROBLEMS

E-2 TROUBLESHOOTING E-2 TANDEM MIG TORCH 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 troubleshoo...

Page 22 - NOTES