ESAB Heliarc 250 User Manual

F-15-047-A
February, 1995
Heliarc
®
250 AC/DC
SQUARE WAVE POWER SOURCES
NOTE: This manual is also suitable for use with L-TEC Heliarc 250 HF plus.
These INSTRUCTIONS are for experienced operators. If you are not fully familiar with the principles of operation and
safe practices for arc welding equipment, we urge you to read our booklet, "Precautions and Safe Practices for Arc
Welding, Cutting, and Gouging", Form 52-529. Do NOT permit untrained persons to install, operate, or maintain this
equipment. Do NOT attempt to install or operate this equipment until you have read and fully understand these
instructions. If you do not fully understand these instructions, contact your supplier for further information. Be sure
to read the Safety Precautions (Section 1) before installing or operating this equipment.
Be sure this information reaches the operator.
You can get extra copies through your supplier.
INSTRUCTION MANUAL
P/N 31310 - Heliarc 250 AC/DC w/power factor
P/N 31300 - Heliarc 250 AC/DC w/o power factor

ESAB Heliarc 250 Specifications

General

Brand	ESAB
Model	Heliarc 250
Category	Portable Generator
Language	English

Summary

USER RESPONSIBILITY

SAFETY PRECAUTIONS

Protect Yourself and Others

Safety measures for personal protection from arc rays, heat, and noise.

Fires and Explosions

Precautions to prevent fires and explosions caused by welding operations.

Electrical Shock Hazards

Warnings and procedures to avoid electrical shock during operation.

Electric and Magnetic Fields

Information on potential EMF exposure and mitigation for welders.

Fumes and Gases

Precautions regarding hazardous fumes and gases generated during welding.

Cylinder Handling

Safe procedures for handling compressed gas cylinders to prevent rupture.

Equipment Maintenance Safety

Safety guidelines for performing maintenance on welding equipment.

Additional Safety Information

References to further publications for safe welding practices.

DESCRIPTION

Introduction

Overview of the Heliarc 250 AC/DC welding power source capabilities.

Duty Cycle

Explanation of duty cycle and how it affects machine operation and output.

INSTALLATION

Unpacking and Placement

Instructions for safely unpacking and positioning the welding power source.

Primary Electrical Connections

Guidelines for connecting the unit to the primary power supply.

Input Terminal Board Connections

Details on connecting input voltage and ground to the terminal board.

External Primary/Secondary Connections

Procedures for connecting external primary and secondary electrical circuits.

Accessories

Information on available optional accessories for the welding unit.

Optional Accessories

Details on optional accessories like water coolers and remote controls.

OPERATION

Control Functions Overview

Explanation of various control switches and potentiometers on the unit.

Sequence of Operation

Step-by-step guide for operating the welding machine.

Stick Welding Procedure

Detailed steps for performing Stick welding with the unit.

TIG Welding Procedure

Detailed steps for performing TIG welding with the unit.

MAINTENANCE

General Maintenance and Cleaning

Basic maintenance tasks, safety, and procedures for cleaning the unit.

Component Servicing

Guidelines for lubricating fan motors and servicing spark gaps.

Component Testing and Replacement

Procedures for testing and replacing bridge assembly components.

TROUBLESHOOTING

General Troubleshooting

General advice and precautions for troubleshooting the welding unit.

Troubleshooting Guide

A guide to diagnose and resolve common operational problems.

REPLACEMENT PARTS

General Parts Ordering

Guidelines for ordering replacement parts, including necessary information.

Front View Parts

Illustration and part numbers for components on the front panel.

Right Side View Parts

Illustration and part numbers for components on the right side.

Left Side View Parts

Illustration and part numbers for components on the left side.

COMMUNICATION GUIDE - CUSTOMER SERVICES