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Miller econo twin User Manual

Miller econo twin
32 pages
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Miller econo twin Specifications

General IconGeneral
Frequency50/60 Hz
Phase1-Phase
ProcessesMIG, Flux Cored
Welding Amperage Range30 - 175 A
Output Current Range30 - 175 A

Summary

SECTION 1 - SAFETY RULES FOR OPERATION OF ARC WELDING POWER SOURCE

1.1. Introduction

Discusses learning safety, hazards, and the importance of following practices.

1.2. General Precautions

Covers protective clothing, eye/head protection, avoiding sparks, and medical first aid.

1.3. Arc Welding

Details arc intensity, radiation, heat, sparks, fumes, and compressed gas hazards.

1.4. Standards Booklet Index

Lists relevant industry standards for welding and cutting safety and compliance.

SECTION 2 - INTRODUCTION

2.1. General

Manual purpose: familiarizing personnel with design, installation, operation, and troubleshooting.

2.2. Receiving-Handling

Instructions for inspecting equipment for damage upon arrival and filing claims with carriers.

2.3. Description

Describes the unit as a single-phase welding power source for SMAW and GTAW processes.

2.4. Safety

Emphasizes reading the safety section before operation to prevent injury from misuse.

SECTION 3 - INSTALLATION

3.1. Location

Guidance on selecting a proper installation site for dependable service and air movement.

3.2. Line Disconnect Switch

Precautionary measure to ensure maximum protection against electrical shock during installation.

3.3. Electrical Input Connections

Details on connecting single-phase power service and tap connections for voltage.

3.4. Secondary Welding Connections

Information on connecting welding cables, jack plugs, and secondary receptacles.

3.5. Remote HF Control Connections

Instructions for connecting remote on-off control for high-frequency using a switch.

SECTION 4 - FUNCTION OF CONTROLS

4.1. Amperage Control

Details on AC/DC selector, amperage range, adjustment control, and indicator.

4.2. Power Switch

Explains the dual function of the power switch as on/off and overload breaker on HF models.

4.3. High-Frequency Control Receptacle & Switch

Describes the ON/OFF-REMOTE switch for high-frequency control on HF models.

4.4. Duty Cycle

Explains duty cycle ratings and provides a chart to determine safe output at various cycles.

4.5. Volt Ampere Curve

Shows output voltage at different output currents and how to determine amperage.

SECTION 5 - SEQUENCE OF OPERATION

5.1. Shielded Metal-Arc (SMAW) Welding

Step-by-step procedure for performing Shielded Metal-Arc welding.

5.2. Gas Tungsten-Arc (GTAW) Welding

Step-by-step procedure for performing Gas Tungsten-Arc welding with HF models.

5.3. Shutting Down

Procedure for safely shutting down the welding power source after operation.

SECTION 6 - MAINTENANCE

6.1. Fan Motor

Information on the fan motor's lifetime lubrication and lack of maintenance requirements.

6.2. Transformer

Recommendation for periodic cleaning of the transformer by blowing out dust and dirt.

6.3. Rectifier

Suggestion to clean the rectifier occasionally with compressed air to maintain performance.

6.4. Movable Shunt

Advises lubricating the movable shunt lead screw and slider annually with high-temperature grease.

6.5. Spark Gap

Guidance on inspecting and adjusting spark gaps for optimal high-frequency output.

6.6. Shunt Guide Adjustment

Procedure to adjust shunt guides to compensate for vibration noises.

SECTION 8 - CERTIFICATION FOR HIGH FREQUENCY ARC WELDING EQUIPMENT

8.1. General

Importance of proper installation and user certification for FCC compliance requirements.

8.2. General Information

Explains four ways interfering radiation can escape from HF welding machines.

8.3. Power Service

Requirements for using solid metallic conduit and proper grounding for power service leads.

8.4. Welding Machine

Guidance on choosing a location near a good ground and bonding the machine case.

8.5. Welding Leads

Recommendations to keep welding leads short and close together to minimize radiation.

8.6. Wiring in the Vicinity of the Welding Area

Discusses H.F.I. zones and the need for shielded wiring in the welding area.

8.7. Grounds

Specifications for making a "good ground" connection using a driven rod or cold water pipe.

8.8. Metal Building

Addresses the assumption that metallic buildings eliminate radiation, clarifying grounding needs.

8.9. Individual Installation Certification

Option for users to conduct an individual field survey and certify installation compliance.

8.10. Check List

A list of questions for installers to verify compliance with installation requirements.

PARTS LIST

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