Lincoln Electric LN-25 SVM114-C User Manual

LN-25
™
PORTABLE CV/CC
SEMIAUTOMATIC WIRE FEEDER
Safety Depends on You
Lincoln arc welding and cutting equip-
ment is designed and built with safety in
mind. However, your overall safety can
be increased by proper installation ...
and thoughtful operation on your part.
DO NOT INSTALL, OPERATE OR
REPAIR THIS EQUIPMENT WITHOUT
READING THIS MANUAL AND THE
SAFETY PRECAUTIONS CONTAINED
THROUGHOUT. And, most importantly,
think before you act and be careful.
For use with machines having Code Numbers:
9218
9219
9220
9383
9810
9811
9812
RETURN TO MAIN INDEX
10556
10557
10558
11144
11145
11282
11283
11144
11145
11282
11283
SVM114-C
July, 2008
SERVICE MANUAL
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• 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 © Lincoln Global Inc.

Lincoln Electric LN-25 SVM114-C Specifications

General

Type	Wire Feeder
Duty Cycle	60% at 300 A
Wire Diameter	0.023 - 0.045 in
Wire Size Range	0.023-0.045 in (0.6-1.2 mm)
Wire Feed Speed Range	50 - 700 IPM
Cooling System	Air-Cooled
Wire Feed System	4-Roller

Summary

Safety Depends on You

Safety Warnings and Hazards

California Proposition 65 Warnings

Warnings about engine exhaust constituents known to cause cancer.

Arc Welding Safety Precautions

Electric Shock Hazards

Precautions and dangers related to electrical shock during welding operations.

Arc Rays and Burns Protection

Safety measures to protect eyes and skin from arc rays.

Fumes and Gases Dangers

Hazards from welding fumes and gases, and ventilation requirements.

Welding Sparks Fire Hazard

Fire and explosion risks from welding sparks and protective measures.

Cylinder Explosion Hazard

Installation Procedures

Installation Safety Precautions

Specific safety warnings to be observed before installation.

Power Source Connection

Operation Guide

Operation Safety Precautions

Safety warnings to be observed before operating the machine.

LN-25™ Instruments and Controls

Detailed explanation of the feeder's controls and their functions.

Sequence of Operation

Presetting Wire Feed Speed

Circuit Protection and Automatic Shutdown

Maintenance Procedures

Maintenance Safety Precautions

Essential safety warnings before performing maintenance tasks.

Routine Maintenance Tasks

Troubleshooting and Repair

How to Use Troubleshooting Guide

PC Board Troubleshooting Procedures

Steps for troubleshooting and replacing printed circuit boards safely.

Feeding Problems Diagnosis

Common issues related to wire feeding and their possible causes.

Function Problems Diagnosis

Gas Solenoid Valve and PC Board Test

Test procedure for gas solenoid valve and its PC board (codes below 10500).

Gas Solenoid Valve and Control PC Board Test

Test procedure for gas solenoid valve and control PC board (codes above 10500).

Hall Effect Module Test

Procedure to determine if the hall effect module is functioning correctly.

Wire Drive Motor Test

Contactor & Contactor PC Board Test

Contactor PC Board Replacement

Control PC Board Replacement

Contactor Replacement Procedures

Gas Solenoid Valve and PC Board Replacement

Drive Motor and Gearbox Replacement

Retest After Repair