Lincoln Idealarc AC-250 User Manual

June, 1989
Idealarc 250
3202; 3203; 3204; 3205; 3247; 3248; 3287; 3288; 3289;
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8657; 8664; 8665; 8674; 8685; 8735; 8741; 8804; 8805;
8841; 8842; 8950; 9001; 9026; 9040; 9041; 9058; 9059;
9064; 9083; 9101; 9102; 9187; 9446; 9504

Lincoln Idealarc AC-250 Specifications

General

Input Frequency	60 Hz
Rated Output	250 A at 30 V
Open Circuit Voltage	80 V
Input Phase	Single Phase
Output Current Range	30-250A
Duty Cycle	20% at 250A
Input Voltage	230/460 V

Summary

Damage Claims

Safety Depends On You

Arc Welding Safety Precautions

Electric Shock

Hazards and precautions related to electrical shock during welding.

Arc Rays

Protection from harmful arc rays and sparks.

Fumes and Gases

Risks associated with welding fumes and gases and ventilation needs.

Welding Sparks

Prevention of fire and explosion from welding sparks and spatter.

Pipe Thawing

Optional Features

Power Factor Capacitors

Details on optional power factor correction capacitors.

K-806 Undercarriage

Information about the optional undercarriage for mobility.

Duty Cycle

Product Description

Installation

Location

Recommended placement for optimal operation and airflow.

Connecting to Power Lines

Instructions for connecting the welder to the electrical supply.

Grounding

Procedures for properly grounding the welder frame.

Connecting Welding Leads

Guidance on connecting output cables to the welder.

Operating Instructions

Current Control Handle

How to adjust and read the welding current.

Polarity Switch

Function and usage of the polarity selection switch.

TIG Welding

Using the Idealarc for TIG welding with optional Hi-Freq unit.

Maintenance and Troubleshooting

Routine Maintenance

Regular tasks to keep the welder in good condition.

Troubleshooting Table

Common issues, their causes, and recommended solutions.

Rectifier Troubleshooting

Idealarc 250/250 Schematic Wiring Diagram

Internal Assembly Diagram

Internal Assembly Parts List

Case and Exterior

Exterior Parts List

List of external components and their part numbers.

Dimension Print

Need Welding Training?

Limited Warranty

Statement of Warranty

General terms and conditions of the manufacturer's warranty.

Warranty Repair

Process for obtaining warranty service and repairs.

Warranty Costs

Responsibilities for costs associated with warranty claims.

Important Warranty Limitations

Key restrictions and exclusions to the warranty coverage.