Miller Electric MARK VIII-2 Owner's Manual

ProcessesOM-218 029 920AD2011−07MARK VIII-2Visit our website atwww.MillerWelds.comDescriptionAir Carbon Arc (CAC-A) Cut-ting and GougingTIG (GTAW) Wel

OM-218 Page 6Il reste une TENSION DC NON NÉGLIGEABLE dansles sources de soudage onduleur UNE FOISl’alimentation coupée.D Arrêter les convertisseurs, d

OM-218 Page 7LES ACCUMULATIONS DE GAZrisquent de provoquer des blessuresou même la mort.D Fermer l’alimentation du gaz comprimé en casde non utilisati

OM-218 Page 8Les PIÈCES MOBILES peuventcauser des blessures.D Ne pas s’approcher des organes mobiles.D Ne pas s’approcher des points de coincementtels

OM-218 Page 92-5. Principales normes de sécuritéSafety in Welding, Cutting, and Allied Processes, ANSI Standard Z49.1,de Global Engineering Documents

OM-218 Page 10

OM-218 Page 11SECTION 3 − SPECIFICATIONS3-1. Serial Number And Rating Label LocationThe serial number and rating information for this product is locat

OM-218 Page 123-4. Duty Cycle And OverheatingDuty Cycle is percentage of 10 min-utes that unit can weld at rated loadwithout overheating.If unit overh

OM-218 Page 13SECTION 4 − INSTALLATIONssb9.1 5/94 − 801 180 / 144 567-A! Disconnect input power con-ductors from deenergizedsupply BEFORE movingpolywe

OM-218 Page 14. Overall dimensions (A, B, and C) include lifting eye, handles, hardware, etc.DEFGHFrontBACJRef. 144 567-ADimensionsA 77-1/4 in. (1943

OM-218 Page 154-3. Weld Output Terminals And Selecting Cable Sizes*NOTICE − The Total Cable Length in Weld Circuit (see table below) is the combined l

Miller Electric manufactures a full lineof welders and welding related equipment.For information on other quality Millerproducts, contact your local M

OM-218 Page 164-4. Connecting Weld Output Cables803 778-B! Turn off power before connecting toweld output terminals.! Failure to properly connect weld

OM-218 Page 17A. Standard Module Connections144 568-C1 Cable RestraintRoute all cables under cablerestraint.Separate Work ConnectionsSee Section 4-3 f

OM-218 Page 18B. Parallel Module Connections1 Cable RestraintRoute all cables under cablerestraint.Separate Work ConnectionsSee Section 4-3 for proper

OM-218 Page 19144 570-A / Ref. 174 1431 Remote Amperage ControlReceptacles RCX1 (“X”Represents The Number OfThe Applicable Module 1−8)The twistlock re

OM-218 Page 20Ref. 144 570-A / Ref. 085 3821 115 Volts AC DuplexReceptacle RC2This receptacle supplies up to 10amperes of 115 volts ac power.The duple

OM-218 Page 21B. Connecting Input Powerssb2.4* 1/94 − Ref. 144 569-BTools Needed:3/8 in.1-1/16 in.7108496! Installation must meet all National andLoca

OM-218 Page 224-10. Electrical Service GuideFailure to follow these electrical service guide recommendations could create an electric shock or fire ha

OM-218 Page 23Ref. 174 1431 Remote Amperage ControlSwitchFor front panel control of a module,place switch on that module in Offposition.For remote con

OM-218 Page 24SECTION 6 − MAINTENANCE & TROUBLESHOOTING144 567-A3 MonthsCleanAndTightenWeldTerminals6 MonthsTape OrReplaceCrackedCablesReplaceUnre

OM-218 Page 25B. Control Fuses F3 And F4Ref. 144 569-B / Ref. 146 126-C! Turn Off polyweld system,and disconnect and tagout/lockout input power before

TABLE OF CONTENTSSECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING 1...1-1. Symbol Usage 1...

OM-218 Page 266-4. Troubleshooting! Turn Off polyweld system, and disconnect and tagout/lockoutinput power before inspecting, maintaining, or servicin

OM-218 Page 27Tungsten electrode oxidizing and not re-maining bright after conclusion of weld.Replace torch parts if water has leaked into torch.For G

OM-218 Page 28SECTION 7 − ELECTRICAL DIAGRAMFigure 7-1. Circuit Diagram For Polyweld System

OM-218 Page 29SD-082 527-C

OM-218 Page 30SECTION 8 − SELECTING AND PREPARING A TUNGSTENFOR DC OR AC WELDINGgtaw_Phase_2011−06! Whenever possible and practical, use DC weld outp

OM-218 Page 31SECTION 9 − GUIDELINES FOR TIG WELDING (GTAW)2007−049-1. Positioning The TorchRef. ST-161 892! Grinding the tungsten elec-trode produces

OM-218 Page 329-2. Torch Movement During WeldingST-162 002-BTungsten Without Filler RodTungsten With Filler RodForm pool Tilt torch Move torch to fron

OM-218 Page 33Notes

OM-218 Page 34SECTION 10 − PARTS LIST1234567891016171819202324856ST-144 531-D25. Hardware is common andnot available unless listed.12111526Figure 10-1

OM-218 Page 35DescriptionPartNo.Dia.Mkgs.ItemNo.Figure 10-1. Main Assembly (Section A)Quantity1 FM1,2 032 605 Motor, Cap Perm SP 1/4 HP 230VAC 1625RPM

Notes

OM-218 Page 3612345689107ST-144 660. Hardware is common andnot available unless listed.Figure 10-2. Main Assembly (Section B)

OM-218 Page 37DescriptionPartNo.Dia.Mkgs.ItemNo.Figure 10-2. Main Assembly (Section B)Quantity1 CR1 194 307 Contactor, Def Prp 40A 3P 120V 1... ...

OM-218 Page 38DescriptionPartNo.Dia.Mkgs.ItemNo.Figure 10-3. Panel, Front Module w/Components (Fig 10-1 Item 24)Quantity1 034 253 Door, Access Pwr Out

OM-218 Page 39DescriptionPartNo.Dia.Mkgs.ItemNo.Figure 10-4. Panel, Front Lower w/Components (Fig 10-1 Item 25)Quantity1 +086 855 Panel, Front Lower 1

OM-218 Page 40249 866-A12310111254986Figure 10-5. Fuse Panel, ModuleFigure 10-5. Fuse Panel, Module (Figure 10-2 Item 8)Description QuantityPartNo.Dia

OM-218 Page 41027 09612235633121471111109811171615Figure 10-6. Terminal Assembly, Pri 3phDescription QuantityPartNo.ItemNo.Figure 10-6. Terminal Assem

Notes

Warranty Questions?Call1-800-4-A-MILLERfor your localMiller distributor.miller_warr 2011−01Your distributor also givesyou ...ServiceYou always get the

ORIGINAL INSTRUCTIONS − PRINTED IN USA  2011 Miller Electric Mfg. Co. 2011−01Miller Electric Mfg. Co.An Illinois Tool Works Company1635 West Spencer

OM-218 Page 1SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USINGsom 2011−017Protect yourself and others from injury — read and follow these precautions

OM-218 Page 2Welding produces fumes and gases. Breathingthese fumes and gases can be hazardous to yourhealth.FUMES AND GASES can be hazardous.D Keep y

OM-218 Page 31-3. Additional Symbols For Installation, Operation, And MaintenanceFIRE OR EXPLOSION hazard.D Do not install or place unit on, over, or

OM-218 Page 41-4. California Proposition 65 WarningsWelding or cutting equipment produces fumes or gaseswhich contain chemicals known to the State of

OM-218 Page 5SECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE AVANT UTILISATIONfre_som_2011−017Se protéger et protéger les autres contre le risque de blessure