Miller Electric MARK VI User Manual

Processes
Stick (SMAW) CC
TIG (GTAW) CC
Air Carbon Arc (CAC-A)
Cutting and Gouging CC
Flux Cored (FCAW) CV
MIG Spray Transfer (GMAW)
with Voltage-Sensing Feeder CV
Heavy Industrial Applications
Construction
Rental Fleets
Fab Shops
Petro Chemical
Shipbuilding
Training Facilities
Maintenance
Quick
Specs
Rugged and durable enclosure
steel frame protects system.
Mark VI
Multiple Arc
Welding System
Issued January 2006 • Index No. DC/9.8
Work connections are electrically isolated
from the frame, and service panels in
chassis provide easy access to internal
parts for routine maintenance.
Capable of four to six welding arcs,
Miller’s unique modules are designed
for easy removal and connection.
If you need only four arcs today,
purchase the Mark VI-2. If you
have a requirement for more arcs,
additional modules (CC or CV)
are available for purchase.
Optional Low OCV in CC/CV modules reduces maximum
open-circuit voltage to 26 volts in CC and CV modes when
not welding.
The Power of Blue
®
.
Miller Electric Mfg. Co.
An Illinois Tool Works Company
1635 West Spencer Street
Appleton, WI 54914 USA
Web Site
www.MillerWelds.com
International Headquarters
Phone: 920-735-4505
USA FAX: 920-735-4134
Canadian FAX: 920-735-4169
International FAX: 920-735-4125
Voltage Range CC: 20–315 A
CV: 10–30 V (with CC/CV Module)
Max. Open-Circuit Voltage
CC: 75 VDC CV: 38 VDC
CC/CV Low OCV Module: 26 VDC ±2 V
Weight Mark VI: 1725 lb (784 kg)
Mark VI-2: 1575 lb (718 kg)
Adjustable arc control lets you get in
tight without sticking the electrode. An
electrode compensation circuit ensures
arc control performance regardless of
the electrode size.
Multiple capabilities CC or CC/CV.
Versatility and outstanding arc
welding performances in both CV
(MIG) and CC (TIG and Stick). The
CC/CV module has a high quality
arc for welding with cored wires.
Miller does not recommend that
the CC/CV module be used for short
circuit transfer MIG welding. The CC
module has the same great arc
characteristic as the Gold Star 302.
Operator identification label helps
operators remember who is using
which module.
Welder is warranted for 3 years, parts and labor.
Original main power rectified parts are warranted for 5 years.
14-pin receptacle provides quick, direct
connection to Miller wire feeders and
accessories.
Weighs less than one ton which
makes it portable when secured on a
flatbed, construction truck, or when
moved by one-ton hoist. Fits through
36 in (914 mm) door opening.
60 Hz models have two 115 V GFCI duplex
receptacles which supply 15 amps of
auxiliary power. 50 Hz models have one
220 V and one 115 V duplex receptacle.
Line voltage compensation keeps
output power constant even if primary
input power varies by ±10%, ensuring
consistent weld performance.
Hot Start
™
makes it easy to start difficult-
to-start Stick electrodes, such as E-6010
and E-7018.

Miller Electric MARK VI Specifications

General

Duty Cycle	60% at 300 A
Protection Class	IP23
Welding Processes	Stick
Input Phase	Three-phase
Rated Output	300 A at 32 V, 60% Duty Cycle

Summary

Quick Specs Overview

Heavy Industrial Applications

Lists industries and sectors served by the welding system.

Welding Processes Supported

Details the welding processes the system is capable of performing.

Voltage Range Specifications

Outlines the voltage capabilities for different welding modes.

Machine Weight

Provides the weight specifications for the welding system.

Specifications Details

Rated Welding Output

Specifies the welding output at 44 volts DC.

DC Amperage and Voltage Range

Details the DC amperage and voltage ranges for operation.

Max. Open-Circuit Voltage

Lists the maximum open-circuit voltage for various configurations.

Input Amperage and Power

Provides input amperage requirements at 750A output for different voltages.

Dimensions and Net Weight

Specifies the physical dimensions and net weight of the welder.

Control Panel Layout

Upper Panel for CC Units

Describes the controls located on the upper panel of CC units.

Upper Panel for CC/CV Units

Details the controls on the upper panel of CC/CV units.

Lower Panel Controls

Outlines the functions of the controls on the lower panel.

Performance Data Charts

CC Volt/Amp Curves

Illustrates voltage and amperage characteristics for CC modules.

CV Volt/Amp Curves

Illustrates voltage and amperage characteristics for CV modules.

Genuine Miller Accessories

Process Selector Control

Accessory for changing weld processes without cable changes.

Stick Hook-up Kit

Kit for connecting stick welding accessories.

MIG Hook-Up Kit

Kit for connecting MIG welding accessories.

HF-251D-1 High-Frequency Arc Starter

Adds high frequency start for TIG (GTAW) process.

SuitCase Wire Feeders

Compact, portable wire feeders for various wire types.

Remote Controls and Switches

Accessories for remote operation and control.

Accessory Ordering Information

Remote Controls and Switches

Details miniature hand control and rocker switch accessories.

Extension Cables for 14-Pin Plugs

Provides extension cables for connecting accessories.

Power Source and Options

Lists available power source configurations and options.

Stick Accessories

Includes hook-up kits and electrodes for stick welding.

TIG Accessories

Details the HF arc starter/stabilizer for TIG welding.

MIG Accessories

Lists wire feeders and hook-up kits for MIG welding.

Remote Controls

Categorizes various remote control options.

Extension Cords

Lists available lengths for extension cords.

Miscellaneous Accessories

Includes selector controls, cords, and gas-related items.