Miller D-74S Manuel D'utilisation
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Miller D-74S Manuel D'utilisation

Miller D-74S Manuel D'utilisation

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For product information,
Owner's Manual translations,
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D-74S And D-74D
Control Box
OM-252717H
2021−06
Processes
MIG (GMAW) Welding
Flux Cored (FCAW) Welding
(Gas-and Self-Shielding)
Submerged (SAW) Welding
Description
Wire Feeder
(Use with CV Power Sources)
CE
File: MIG (GMAW)

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  • Page 1 2021−06 Processes MIG (GMAW) Welding Flux Cored (FCAW) Welding (Gas-and Self-Shielding) Submerged (SAW) Welding Description Wire Feeder (Use with CV Power Sources) D-74S And D-74D Control Box For product information, File: MIG (GMAW) Owner’s Manual translations, and more, visit www.MillerWelds.com...
  • Page 2 We know you don’t have time to do it any other way. That’s why when Niels Miller first started building arc welders in 1929, he made sure his products offered long-lasting value and superior quality.

  • Page 3: Table Des Matières

    TABLE OF CONTENTS SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING ....... . . 1-1.
  • Page 4 DECLARATION OF CONFORMITY for European Community (CE marked) products. MILLER Electric Mfg. LLC, 1635 Spencer Street, Appleton, WI 54914 U.S.A. declares that the product(s) identified in this declaration conform to the essential requirements and provisions of the stated Council Directive(s), Commission Regulation(s) and Standard(s).

  • Page 5: Section 1 − Safety Precautions - Read Before Using

    SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING som 2020−02 Protect yourself and others from injury — read, follow, and save these important safety precautions and operating instructions. 1-1. Symbol Usage DANGER! − Indicates a hazardous situation which, if Indicates special instructions.
  • Page 6 D Do not cut or weld on tire rims or wheels. Tires can explode if heat- FUMES AND GASES can be hazardous. ed. Repaired rims and wheels can fail. See OSHA 29 CFR 1910.177 listed in Safety Standards. D Do not weld on containers that have held combustibles, or on Welding produces fumes and gases.
  • Page 7 D Never weld on a pressurized cylinder − explosion will result. CYLINDERS can explode if damaged. D Use only correct compressed gas cylinders, regulators, hoses, and fittings designed for the specific application; maintain them Compressed gas cylinders contain gas under high and associated parts in good condition.

  • Page 8: California Proposition 65 Warnings

    H.F. RADIATION can cause interference. ARC WELDING can cause interference. D High-frequency (H.F.) can interfere with radio D Electromagnetic energy can interfere with navigation, safety services, computers, and sensitive electronic equipment such as communications equipment. computers and computer-driven equipment such as robots. D Have only qualified persons familiar with electronic equipment D Be sure all equipment in the welding area is electromagnetically perform this installation.

  • Page 9: Section 2 − Consignes De Sécurité − Lire Avant Utilisation

    SECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE AVANT UTILISATION som_2020−02_fre Pour écarter les risques de blessure pour vous−même et pour autrui — lire, appliquer et ranger en lieu sûr ces consignes relatives aux précautions de sécurité et au mode opératoire. 2-1.
  • Page 10 D Déplacer toutes les substances inflammables à une distance de LES PIÈCES CHAUDES peuvent 10,7 m de l’arc de soudage. En cas d’impossibilité les recouvrir provoquer des brûlures. soigneusement avec des protections homologués. D Ne pas toucher à mains nues les parties chaudes. D Ne pas souder dans un endroit là...

  • Page 11: Dangers Supplémentaires En Relation Avec L'installation, Le Fonctionnement Et La Maintenance

    D Protéger les bouteilles de gaz comprimé d’une chaleur excessive, Les CHAMPS ÉLECTROMAGNÉTIQUES (CEM) des chocs mécaniques, des dommages physiques, du laitier, des peuvent affecter les implants médicaux. flammes ouvertes, des étincelles et des arcs. D Placer les bouteilles debout en les fixant dans un support station- D Les porteurs de stimulateurs cardiaques et naire ou dans un porte-bouteilles pour les empêcher de tomber ou autres implants médicaux doivent rester à...

  • Page 12: Proposition Californienne 65 Avertissements

    D Effectuer régulièrement le contrôle et l’entretien de l’installation. LIRE LES INSTRUCTIONS. D Maintenir soigneusement fermés les portes et les panneaux des sources de haute fréquence, maintenir les éclateurs à une distan- D Lire et appliquer les instructions sur les ce correcte et utiliser une terre et un blindage pour réduire les étiquettes et le Mode d’emploi avant l’instal- interférences éventuelles.

  • Page 13: Section 3 − Definitions

    SECTION 3 − DEFINITIONS 3-1. Additional Safety Symbols And Definitions Some symbols are found only on CE products. Warning! Watch Out! There are possible hazards as shown by the symbols. Safe1 2012−05 Do not discard product (where applicable) with general waste. Reuse or recycle Waste Electrical and Electronic Equipment (WEEE) by disposing at a designated collection facility.
  • Page 14 Welding sparks can cause fires. Have a fire extinguisher nearby, and have a watchperson ready to use it. Safe63 2012−06 Do not weld on drums or any closed containers. Safe16 2017−04 Do not remove or paint over (cover) the label. Safe20 2017−04 Drive rolls can injure fingers.

  • Page 15: Miscellaneous Symbols And Definitions

    3-2. Miscellaneous Symbols And Definitions Some symbols are found only on CE products. Rated Welding Amperes Three Phase Current Direct Current Primary Voltage (DC) Program Degree Of Protection Output Preflow Time Hertz Duty Cycle Variable Inductance Set Up Input Line Connection Increase Constant Current Conventional...

  • Page 16: Section 4 − Specifications

    SECTION 4 − SPECIFICATIONS 4-1. Serial Number And Rating Label Location The serial number and rating information for this product is located inside the case. Use rating label to determine input power requirements and/or rated output. For future reference, write serial number in space provided on back cover of this manual. 4-2.
  • Page 17 D. China EEP Hazardous Substance Information   ‡ China EEP Hazardous Substance Information Ö Hazardous Substance Component Name × (if applicable) PBDE Ö Brass and Copper Parts Coupling Devices Switching Devices Ö Cable and Cable Accessories Batteries SJ/T 11364 This table is prepared in accordance with China SJ/T 11364.

  • Page 18: Section 5 − Installation

    SECTION 5 − INSTALLATION 5-1. Installing Control Box And Adjusting Tilt Weld Control Bracket Screw Bracket and screws are installed onto bottom of control at factory. Swivel Loosen screws. Place control on swivel and slide forward. Tighten screws. Tilt Bracket Rear Pivot Screw Front Screw Loosen rear pivot screw.

  • Page 19: Equipment Connection Diagram

    5-2. Equipment Connection Diagram Welding Power Source Remote 14 Connection Negative (−) Weld Output Cable Positive (+) Weld Output Cable Workpiece Weld Control Boom Swivel 10 Pipe Post And Base 11 Gas Hose 12 Gas Supply and Regulator (Customer Supplied) Shielding gas pressure not to exceed 100 PSI (689 kPa).

  • Page 20: Control Box Connections

    5-3. Control Box Connections Interconnecting Cables Interconnecting Cable Receptacles 14-Pin Cord Ref. 803187-B / Ref. 803197-B 5-4. 14-Pin Plug Information Pin* Pin Information 24 volts AC with respect to socket G. Contact closure to A completes 24 volts AC contactor control circuit. Circuit common for 24 volts AC circuit.

  • Page 21: Setting Internal Dip Switches

    5-5. Setting Internal DIP Switches Remove wrapper. Left Side Motor DIP Switch S1 On Motor Control Board Board PC1 PC101 w Setting Current Detect Override (S1-1) Current detect override is used to disable run-in when a welding pow- Right Side Motor er source is used that doesn’t pro- Control Board PC1 vide current feedback through the...

  • Page 22: Optional Equipment Dip Switch Settings

    5-6. Optional Equipment DIP Switch Settings Remove wrapper. Digital Meter Board PC60 Meter Board Switch S2 Install wrapper when finished. Digital Meter Functions Standard Standard High Speed High Speed Motor Motor Motor Motor Inches/Minute Meters/Minute Inches/Minute Meters/Minute PC60 Tools Needed: 1/4 in.

  • Page 23: Section 6 − Operation

    SECTION 6 − OPERATION 6-1. Power Switch Power Switch Ref. 803183-B 6-2. Left/Right Select Switch Left/Right Select Switch Pressing the Left/Right Select switch allows the operator to choose which side of the unit’s con- trols will operate. Ref. 803184-B 6-3. Jog/Purge Jog/Purge Push Buttons Wire Speed Controls Ref.

  • Page 24: Trigger Hold Switch

    6-4. Trigger Hold Switch Trigger Hold Switches Trigger hold allows the operator to weld without holding the gun trigger. • To use the trigger hold function, place the trigger hold switch in the On position. • The operator must hold the trig- ger for a minimum of 2 seconds, but not longer than 6 seconds be- fore releasing it.

  • Page 25: Section 7 − Maintenance & Troubleshooting

    SECTION 7 − MAINTENANCE & TROUBLESHOOTING 7-1. Routine Maintenance Disconnect power before maintaining. 3 Months Clean and Repair or tighten Replace replace weld unreadable cracked terminals. labels. weld cable. Replace Check Check gas Check gun cracked 14-pin cord. hose and cable.

  • Page 26: Diagnostics

    7-2. Diagnostics LED3 On Right Side Motor Control Board PC1 LED3 On Left Side Motor Control Board PC101 LED3 On Dual Board PC70 805 407-A Display On LED3 Sequence Indicated Error Optional Meter HELP 11 1 Blink Communication Error Left Side Motor Control Board PC101 HELP 12 2 Blinks...

  • Page 27: Troubleshooting

    7-3. Troubleshooting Disconnect power before troubleshooting. Trouble Remedy Wire feeds, shielding gas flows, but Check cable connections. Check cables for continuity, and repair or replace cables if necessary electrode wire is not energized. (see Section 5-2). Wire feeder is on, display does not light Check and reset circuit breaker at welding power source.

  • Page 28: Section 8 − Electrical Diagram

    SECTION 8 − ELECTRICAL DIAGRAM Figure 8-1. Circuit Diagram OM-252717 Page 24...
  • Page 29 204 716-B OM-252717 Page 25...

  • Page 30: Section 9 − Parts List

    SECTION 9 − PARTS LIST 9 11 Hardware is common and not available unless listed. 252677-B Figure 9-1. D-74S Control Box Item Dia. Part Mkgs. Description Figure 9-1. D-74S Control Box ....
  • Page 31 ......Nameplate, Miller D-74S Upper (Order By Model And Serial Number) +When ordering a component originally displaying a precautionary label, the label should also be ordered.
  • Page 32 Hardware is common and not available unless listed. 252695-B Figure 9-2. D-74D Control Box Item Dia. Part Mkgs. Description Figure 9-2. D-74D Control Box ....207496 Wrapper, feeder .
  • Page 33 ......Nameplate, Miller D-74D Upper (Order By Model And Serial Number) +When ordering a component originally displaying a precautionary label, the label should also be ordered.
  • Page 34 Table 9-1. Drive Roll And Wire Guide Kits OM-252717 Page 30...
  • Page 35 Effective January 1, 2021 (Equipment with a serial number preface of NB or newer) This limited warranty supersedes all previous Miller warranties and is exclusive with no other guarantees or warranties expressed or implied. LIMITED WARRANTY − Subject to the terms and conditions TIG Torches (No Labor) below, Miller Electric Mfg.

  • Page 36: For Service

    Contact the Delivering Carrier to: File a claim for loss or damage during shipment. For assistance in filing or settling claims, contact your distributor and/or equipment manufacturer’s Transportation Department. © ORIGINAL INSTRUCTIONS − PRINTED IN USA 2021 Miller Electric Mfg. LLC 2021−01...

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