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Miller XMT 450 CC/CV User Manual

Miller XMT 450 CC/CV
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Arc Welding Power Source
XMT 450 CC/CV
OM-251387S 202004
Processes
Description
Multiprocess Welding
File: MULTIPROCESS
R
For product information,
Owner’s Manual translations,
and more, visit
www.MillerWelds.com

Table of Contents

Questions and Answers:

Miller XMT 450 CC/CV Specifications

General IconGeneral
Input Frequency50/60 Hz
Output Current Range (CC)5 - 450 A
Output Current Range (CV)10 - 450 A
Duty Cycle100% at 450 A
Input Voltage208/230/460 V
Input Phase3-Phase
Welding ProcessesMIG (GMAW), Stick (SMAW), TIG (GTAW), Flux-Cored (FCAW)

Summary

Safety Precautions

Symbol Usage and Arc Welding Hazards

Explains hazard symbols and covers electrical shock and grounding safety.

Environmental and Workplace Hazards

Addresses fumes, gases, arc rays, fire, explosion, and flying debris risks.

Cylinder Safety and Operation Hazards

Covers hazards from cylinders, moving parts, batteries, and installation/operation.

Interference and Regulatory Warnings

Discusses RF/arc interference, EMF, Proposition 65, and safety standards.

Definitions

Safety Symbols and Definitions

Explains additional safety symbols and warnings.

Miscellaneous Symbols and Terms

Defines various welding symbols, abbreviations, and terms.

Specifications

Features, Controls, and Identification

Describes unit features, arc controls, and label locations.

Unit Specifications and Environmental Data

Lists unit specs, dimensions, weight, and environmental ratings.

Duty Cycle and Overheating

Explains duty cycle limits and overheating procedures.

Volt-Ampere Curves

Displays voltage and amperage output capabilities for different modes.

Installation

Site Selection

Guidance on choosing a suitable installation site and airflow.

Input Voltage Setup

Instructions for setting the input voltage for 230/460V models.

Cable and Output Connections

Guidelines for cable sizing and connecting output terminals.

Connecting Input Power

Step-by-step guide for connecting input power.

General Operation

Front Panel Overview

Describes the controls and displays on the front panel.

Mode Switch Settings

Explains the different welding modes and their settings.

GTAW Operation

Typical GTAW Connection

Illustrates the standard setup for GTAW welding.

Scratch Start TIG Mode

Details the setup and operation of Scratch Start TIG.

Lift-Arc TIG Mode

Details the setup and operation of Lift-Arc TIG.

Standard TIG Mode

Details the setup and operation of standard TIG welding.

GMAW/FCAW Operation

Typical Process Connections

Illustrates standard GMAW/FCAW and GMAW-P connections.

MIG Welding Mode

Details setup and operation for MIG welding.

Pulsed MIG Welding Mode

Details setup and operation for Pulsed MIG welding.

V-Sense Feeder Welding Mode

Details setup and operation for V-Sense Feeder welding.

SMAW/CAC-A Operation

Typical SMAW/CAC-A Connection

Illustrates the standard setup for SMAW and CAC-A welding.

CC Welding Mode

Details setup and operation for CC welding mode.

Stick Welding Mode

Details setup and operation for Stick welding mode.

OCV and Configuration Functions

Covers optional low OCV modes and alternate configuration functions.

Maintenance and Troubleshooting

Routine Maintenance Schedule

Outlines recommended maintenance tasks and intervals.

Troubleshooting Common Issues

Provides a table for diagnosing and resolving common operational problems.

Electrical Diagram

Circuit Diagram Overview

Presents the main circuit diagram for the welding unit.

Parts List

Parts Assembly Diagram

Illustrates the assembly of unit components with item numbers.

Component Part Numbers

Lists detailed part numbers and descriptions for unit components.

Warranty Information

Limited Warranty Details

Explains warranty coverage, terms, and exclusions.

Owner's Record and Service Information

Provides space for owner details and service contact information.

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