ESAB LKA 180 Service Manual

0349 300 002 Valid for serial no. 618−xxx−xxxx 040928
LKA 180/240
clka1p00
Service manual

ESAB LKA 180 Specifications

General

Brand	ESAB
Model	LKA 180
Category	Welding System
Language	English

Summary

Introduction

Rating Plate Explanation

Component Descriptions

Connection Diagram LKA 180 Single-phase 230V

Connection Diagram LKA 180 3-phase 400V

Connection Diagram LKA 180 3-phase 230/400V

Connection Diagram LKA 240 3-phase 400V

Connection Diagram LKA 240 3-phase 230/400V

Circuit Diagram for Circuit Board AP1

Component Positions on Circuit Board AP1

Description of Circuit Board AP1 Operation

Power Supply Circuit

Explains the power supply circuit for the wire feeder motor and fan.

Reference Circuit

Details the reference circuit, including potentiometer R49 for wire feed speed.

Circuit Operations and Features

Start and Stop Circuit

Describes the operation of the torch trigger switch and its effect on the circuit.

Thermal Overload Circuit

Explains the function of thermal overload cutouts and LED indicator V7.

Spot Welding Circuit

Details the spot welding circuit, including time adjustment and capacitor charging.

Burn-Back Time Adjustment

Control Amplifier and Pulse Width Modulator

Explains the control amplifier and pulse width modulator for motor speed control.

Motor Drive and Braking Systems

Motor Drive Circuit

Details the output stage of the pulse width modulator connected to transistor Q1.

Braking Circuit

Describes the dynamic braking circuit activated when wire feed stops.

Load Characteristics Graphs

Technical Data Specifications

Main Dimensions

Provides the main physical dimensions for LKA 180 and LKA 240 models.

Installation Guide

Operating Instructions

Maintenance Procedures

Cleaning and Wire Feed Maintenance

Covers cleaning dust, maintaining the wire feed mechanism, and cleaning the welding torch.

Welding Data Selection Tables

Spare Parts List

Wire Feed Unit Components

ESAB Subsidiaries and Representative Offices