Lincoln Electric 50448 User Manual

SVM 3104
Rev.00 02-2020
LF52D - LF56D
For use with machines having code number: 50448, 50449
LINCOLN ELECTRIC EUROPE
www.lincolnelectric.eu

Lincoln Electric 50448 Specifications

General

Brand	Lincoln Electric
Model	50448
Category	Welding System
Language	English

Summary

Technical Specifications

SAFETY

INTRODUCTION

Installation and Operator Instructions

Instructions for setting up and operating the welding machine.

Controls and Operational Features

User Interface

Description of the user interface displays, knobs, and buttons.

Guide's Marking Interface

Advanced User Interface (U7)

Details on the 7" TFT display interface for LF56D.

Select Welding Program

Procedure to select welding programs using the interface.

Settings and Configuration Menu

Limits

Advanced Setup

Welding GMAW and FCAW Process in non-synergic mode

Welding GMAW and FCAW Process in synergic mode CV

Synergic mode operation where voltage is machine-controlled.

Welding SMAW Process

Loading the Wire Spool

Maintenance

Error

CONNECTION CONFIGURATION

MAJOR COMPONENTS LOCATION

TROUBLESHOOTING AND REPAIR SECTION

HOW TO USE TROUBLESHOOTING GUIDE

Step-by-step guide on how to use the troubleshooting section.

ERROR CODES

FEEDER CONTROL BOARD TEST

FEEDER CONTROL BOARD TEST (continued)

Testing the feeder control board for voltage and proper operation.

USER INTERFACE BOARD TEST

USER INTERFACE BOARD TEST (LF52D)

Testing the LF52D User Interface board for correct voltage.

USER INTERFACE BOARD TEST (LF56D)

Testing the LF56D User Interface board for correct voltage.

GAS SOLENOID TEST

GAS SOLENOID TEST (continued)

Procedure to test the gas solenoid's functionality.

WIRE DRIVE MOTOR TEST

WIRE DRIVE MOTOR TEST (continued)

Testing the wire drive motor for correct voltage and operation.

WIRE DRIVE MOTOR TACHOMETER TEST

WIRE DRIVE MOTOR TACHOMETER TEST (continued)

Testing tachimeter supply and feedback to the motor control board.

DISASSEMBLY OPERATIONS

MOTOR CONTROL BOARD REMOVAL AND REPLACEMENT PROCEDURE

WIRE DRIVE MOTOR AND WIRE DRIVE PLATE REMOVAL AND REPLACEMENT PROCEDURE

USER INTERFACE BOARD REMOVAL AND REPLACEMENT PROCEDURE (LF52D)

USER INTERFACE BOARD REMOVAL AND REPLACEMENT PROCEDURE (LF56D)

CALIBRATION PROCEDURE