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LN-742, LN-742H
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Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEB
SITE: www.lincolnelectric.com
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World's Leader in Welding and Cutting Products
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Contents
Main
LN-742 & LN-742H Wire Feeders
OPERATORS MANUAL
IM476-A
FOR ENGINE powered equipment.
i
ELECTRIC AND MAGNETIC FIELDS may be dangerous
ii
ARC RAYS can burn.
ELECTRIC SHOCK can kill.
FUMES AND GASES can be dangerous.
FOR ELECTRICALLY powered equipment.
CYLINDER may explode if damaged.
iii
WELDING SPARKS can cause fire or explosion.
iv
PRCAUTIONS DE SRET
PRCAUTIONS DE SRET POUR LES MACHINES SOUDER TRANSFORMATEUR ET REDRESSEUR
vv
Thank You
Please Examine Carton and Equipment For Damage Immediately
On-Line Product Registration
vi vi TABLE OF CONTENTS
A-1
PHYSICAL DIMENSIONS
ENVIRONMENTAL RATING (ALLMODELS)
TECHNICAL SPECIFICATIONS LN-742 INPUT VOLTAGE WIRE FEED SPEED WIRE DIAMETERS
TEMPERATURE RATING (ALL MODELS)
A-2
MOUNTING LOCATION
INPUT CABLE CONNECTIONS
NUT STUD ELECTRODE
CONTROL CABLE
COPPER STRAP
A-3
A-4
LN-742 & LN-742H
A-4
FIGURE A.3 LN-742 WIRE FEEDER TO LINCOLN POWER SOURCE CONNECTION DIAGRAM.
+
-
A-5
WORK CABLE
GUN AND CABLE ASSEMBLIES
GUN CABLE CONNECTIONS
A-6
WATER CONNECTIONS (FOR WATER COOLED GUNS)
A-7
GMAW SHIELDING GAS HOOKUP
B-1
OPERATING INSTRUCTIONS
SAFETY PRECAUTIONS
GENERAL DESCRIPTION
RECOMMENDED PROCESSES AND EQUIPMENT
B-2
CONTROLS AND SETTINGS
B-3
ACCELERATION SETTING
ENGLISH OR METRIC SPEED DISPLAY UNITS
CIRCUIT PROTECTION
DRIVE ROLL INSTALLATION
CHANGING DRIVE ROLLS FOR TWO- ROLL WIRE FEEDERS:
B-4
GUIDE TUBE DETAIL
B-5
CHANGING DRIVE ROLLS FOR FOUR- ROLL WIRE FEEDERS:
B-6
GUIDE TUBE DETAIL
B-7
IDLE ROLL PRESSURE SETTING
B-8
WIRE LOADING
B-9
B-10
B-10 WIRE REEL LOADING 50 AND 60 LB COILS (K303 OR K376 WIRE REEL STAND)
B-11
B-11 WIRE REEL LOADING 50 AND 60 LB COILS (K1524-1 UNIVERSAL WIRE REEL STAND)
____________________________________
B-12
MAKING A WELD
WIRE REEL CHANGING
C-1
GENERAL
C-2
K163 UNDERCARRIAGE
K178-1 MOUNTING PLATFORM
K589-1 REMOTE CONTROL KIT
K590-1 WATER SOLENOID KIT
K590-2 WATER CONNECTION KIT
POWER INPUT CABLES
K1819-[ ] CONTROL CABLES
K1817-[ ] CONTROL CABLE EXTENSIONS
WELDING GUNS
INNERSHIELD GUNS
SPINDLES, STANDS, AND ADAPTERS
K162H SPINDLE
K363P 22 TO 30 LB READI-REEL ADAPTER
K376 AND K303 50 TO 60 LB WIRE REEL MOUNTING STANDS
UNIVERSAL WIRE REEL STAND (K1524-1)
ATTACHING THE WIRE REEL STAND
C-6
DRIVE ROLL KITS
D-1
MAINTENANCE
D-1
ROUTINE MAINTENANCE
DRIVE ROLLS AND GUIDE TUBES
WIRE REEL MOUNTING
HOW TO USE TROUBLESHOOTING GUIDE
E-2
E-3
E-4
E-5
E-6
E-7
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AVISO DE PRECAUCION ATTENTION WARNUNG ATENO
AVISO DE PRECAUCION ATTENTION WARNUNG ATENO