Lincoln Electric SVM176-A INSTALLATION

INSTALLATION A-2

LN-23P

A-2

TECHNICAL SPECIFICATIONS – LN-23P

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TEMPERATURE RANGE

OPERATION: - 30oCo* to +40oC (- 22oF to +104oF)

STORAGE: - 40oC to +40oC (- 40oF to +104oF)

ENVIRONMENTAL RATING

OPERATINGARC VOLTAGE

Constant Voltage(CV) 14-50VDC (90VDC Maximum OCV)

RATEDCURRENT

250-350 Amps 60% Duty Cycle

(Depending on Gun Used)

WIRE SPEED RANGE

30-170 Inches Per Minute (IPM)

(1.18-6.70 mm)

RECOMMENDED ELECTRODE WIRE SIZES

.068” INNERSHIELD

.072”INNERSHIELD

5/64”INNERSHIELD

PHYSICAL DIMENSIONS

HEIGHT WIDTH DEPTH WEIGHT

20.5 Inches 9.0 Inches 19.0 Inches 27 lbs

(520.7 mm) (228.6mm) (482.6mm) (12.3kg)

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*At temperatures below 0°C, the gun cable may require a warm up operating time to improve flexibility.

Contents

Main SVM176-A Safety Depends on You RETURN TO MAIN INDEX LN-23P Portable Innershield Semiautomatic Wire Feeder SERVICE MANUAL View Safety Info View Safety Info View Safety Info View Safety Info FOR ENGINE powered equipment. WARNING ELECTRIC AND MAGNETIC FIELDS may be dangerous FUMES AND GASES can be dangerous. ii ARC RAYS can burn. AUG 06 ELECTRICSHOCKcankill. FOR ELECTRICALLY powered equipment. iii CYLINDER may explode if damaged. Mar 95 WELDING SPARKS can cause fire or explosion. PRCAUTIONS DE SRET iv PRCAUTIONS DE SRET POUR LES MACHINES SOUDER TRANSFORMATEUR ET REDRESSEUR Mar.93 iv MASTER TABLE OF CONTENTS FOR ALL SECTIONS - INSTALLATION SECTION - A-1A-1 INSTALLATION TECHNICAL SPECIFICATIONS LN-23P ENVIRONMENTAL RATING TEMPERATURE RANGE EENNVVIIRROONNMMEENNTTAALL RRAATTIINNGG INSTALLATION INPUT CABLE WARNING WORK CABLE AND REMOTE VOLTAGE SENSING WORK LEAD INSTALLATION A-4A-4 WIRE DRIVE ROLLS AND GUIDE TUBES OPTIONAL FEATURES INSTALLATION ACCESSORIES Page Page OPERATION PRODUCT DESCRIPTION LOADING THE WIRE REEL OPERATION DRIVE ROLL PRESSURE ADJUSTING WIRE FEED SPEED AND VOLTAGE MAKING THE WELD Page Page ACCESSORIES OPTIONAL EQUIPMENT Page MAINTENANCE Page Page - THEORY OF OPERATION SECTION- LN-23P + Section ESection E FIGURE E.1 GENERAL DIAGRAM THEORY OF OPERATION GENERAL DESCRIPTION INPUT POWER CIRCUIT THEORY OF OPERATION CONTROL CIRCUIT OPERATION VOLTS AND SPEED CONTROL CIRCUITS TRIGGER AND INTERLOCK CIRCUIT THEORY OF OPERATION OPTIONAL CIRCUITS K350 / K350-1ADAPTER KITS THEORY OF OPERATION LN-23P ICR & 2CR - 3 PDT, 24V.D.C. FIGURE E.5 K350-1 DIAGRAM Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Page -TROUBLESHOOTING AND REPAIR- Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC F-2 F-2 How To Use Troubleshooting Guide IMPORTANT TROUBLESHOOTING TIPS: TROUBLESHOOTING & REPAIR PC BOARD TROUBLESHOOTING PROCEDURES Page Page Page WIRE FEEDER TEST WIRE FEEDER TEST (cont.) 75 76 77 602 604 521 25vdcSupply Neg. Pos. GUN TEST GUN TEST (cont.) TEST PROCEDURE FEED HEAD TEST FEED HEAD TEST (cont.) LN-23P Control Board DC AMPS POS 12 Volt Supply NEG POTENTIOMETER TEST POTENTIOMETER TEST (cont.) LN-23P Control Board 642 K350(-1) ADAPTER TEST K350(-1) ADAPTER TEST (cont.) 1CR 2CR K350(-1) ADAPTER TEST (cont.) MEASUREMENT POINTS EXPECTED READING CALIBRATION CHECK - ELECTRICAL DIAGRAMS SECTION - ELECTRICAL DIAGRAMS WIRING DIAGRAM - ENTIRE MACHINE - (M14197) G-2 + Page Page Page Page Page ELECTRICAL DIAGRAMS