ESAB LAW 420 User Manual

Valid for serial no. 912--xxx--xxxx0458 133 001 011109
LAW 420, LAW 520,
LAW 420W, LAW 520W
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Käyttöohjeet
Instruction manual
Betriebsanweisung
Manuel d’instructions
Gebruiksaanwijzing
Instrucciones de uso
Istruzioni per l’uso
Manual de instruções
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ESAB LAW 420 Specifications

General

Output Current	420 A
Open Circuit Voltage	70 V
Protection Class	IP23
Input Voltage	400 V
Input Phase	3
Duty Cycle	60%
Welding Current Range	420 A

Summary

Product Directive Information

Declaration of Conformity

States compliance with standards and directives for welding power sources.

Product Safety Guidelines

General Safety Precautions

Covers electric shock, fumes, arc rays, fire, noise, and malfunction hazards.

Product Introduction

Technical Specifications

Installation Procedures

Safe Lifting Procedures

Guides on how to safely lift the welding power supply using its designated lifting eye.

Component Assembly Guide

Details the process for assembling the welding unit's components.

Electrical Connection Guide

Instructions and diagrams for connecting the welding unit electrically.

Mains Power Requirements

Details voltage, current, lead rating, and fuse requirements for different mains supplies.

Operating the Welder

Controls and Connections Overview

Identifies and explains the various controls and connection points on the unit.

Maintenance and Care

Coolant Maintenance

Instructions on mixing and adding coolant to the unit.

Spare Parts Ordering