MAC TOOLS MW150K User Manual

cover 8/92 – ST-155 663-A PRINTED IN USA
Read and follow these instructions and all
safety blocks carefully.
Have only trained and qualified persons
install, operate, or service this unit.
Call your distributor if you do not understand
the directions.
Give this manual to the operator.
For help, call your distributor
OWNER’S
MANUAL
May 1994 Form: OM-154 500B
Effective With Serial No. KD436311
MW150K


MAC TOOLS MW150K Specifications

General

Brand	MAC TOOLS
Model	MW150K
Category	Welding System
Language	English

Summary

General Safety Precautions

Electric Shock Hazards

Warns about fatal shocks from touching live electrical parts and improper grounding.

Arc Rays and Noise Hazards

Describes burns from arc rays and hearing damage from noise.

Fumes and Gases Hazards

Explains health risks from breathing welding fumes and gases.

Fire and Explosion Hazards

Flying Sparks and Hot Metal Hazards

Cylinder Safety

Principal Safety Standards

SECTION 1 – SPECIFICATIONS

1-1. Volt-Ampere Curve And Duty Cycle Chart

Displays volt-ampere curves and explains duty cycle ratings for welding operations.

SECTION 2 – INSTALLATION

2-1. Installing Work Clamp

Provides instructions and diagrams for attaching the work clamp.

2-2. Installing Gas Supply

Details the process for safely installing gas cylinders, regulators, and flow gauges.

SECTION 2 – INSTALLATION

2-3. Gun Polarity For Wire Type

Explains how to set gun polarity for different wire types using jumper links.

2-4. Installing Welding Gun

Describes the steps for correctly installing the welding gun onto the machine.

2-5. Connecting Input Power

Outlines the electrical service requirements and connection procedures for the unit.

SECTION 2 – INSTALLATION

2-6. Location And Input Power Connections

Details the proper placement of the unit and connecting input power, including safety considerations.

SECTION 2 – INSTALLATION

2-6. Threading And Feeding Welding Wire

Provides instructions on how to thread and feed welding wire through the drive assembly.

SECTION 3 – OPERATION

Safety Equipment for Operation

Lists and describes essential safety gear like gloves, glasses, and helmets for operation.

SECTION 3 – OPERATION

3-2. Controls Overview

Explains the function of the wire speed, voltage adjustment, and power controls.

SECTION 3 – OPERATION

Table 3-1. Suggested Welding Settings

Offers recommended settings for various wire types, shielding gases, and material thicknesses.

SECTION 4 – MAINTENANCE & TROUBLESHOOTING

Maintenance Schedule

Provides a table outlining routine maintenance tasks and their frequencies.

4-1. Thermal Overload Protection

Explains how the thermal overload protection works and what to do if it activates.

4-2. Overload Protection

Details overload protection mechanisms and troubleshooting for short circuit shutdowns.

SECTION 4 – MAINTENANCE & TROUBLESHOOTING

4-3. Drive Assembly Maintenance

Guides on maintaining the wire drive assembly, including cleaning and part replacement.

B. Motor Fuse F1

Locates and explains the function of the motor fuse F1 and how to replace it.

SECTION 4 – MAINTENANCE & TROUBLESHOOTING

4-4. Gun Maintenance

Provides instructions for disassembling and maintaining the welding gun, including liner replacement.

4-5. Troubleshooting

Offers solutions for common welding problems like no weld output or low weld output.

SECTION 4 – MAINTENANCE & TROUBLESHOOTING

Wire Drive/Gun Trouble

Lists specific wire feeding and gun issues with their remedies and corresponding section references.

SECTION 5 – ELECTRICAL DIAGRAMS

Figure 5-1. Circuit Diagram For Welding Power Source

Presents a circuit diagram illustrating the internal electrical connections of the power source.

SECTION 5 – ELECTRICAL DIAGRAMS

Figure 5-2. Wiring Diagram For Welding Power Source

Displays a wiring diagram showing the external and internal wiring connections of the welding unit.

SECTION 6 – PARTS LIST

Figure 6-1. Main Assembly

Illustrates the main components of the welding unit with numbered callouts for the parts list.

SECTION 6 – PARTS LIST

Parts For Main Assembly

Lists all parts for the main assembly with item numbers, part numbers, and descriptions.

Figure 6-2. GA-16C Gun (Fig 6-1 Item 60)

Shows an exploded view of the GA-16C gun with numbered parts for reference.