Table of Contents
Related Manuals for Miller A-250 Series
Summary of Contents for Miller A-250 Series
- Page 1 OM-282751A 2018-06 Processes TIG (GTAW) Welding Description Hand-Held Air-Cooled TIG (GTAW) Torch A-250 Series A-250, A-250V File: TIG (GTAW) For product information, Owner’s Manual translations, and more, visit www.MillerWelds.com...
- Page 2 From Miller to You Thank you and congratulations on choosing Miller. Now you can get the job done and get it done right. 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.
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Page 3: Table Of Contents
TABLE OF CONTENTS SECTION 1 −SAFETY PRECAUTIONS FOR GTAW TORCHES − READ BEFORE USING ....1-1. Symbol Usage ............... . 1-2. -
Page 5: Section 1 −Safety Precautions For Gtaw Torches − Read Before Using
SECTION 1 −SAFETY PRECAUTIONS FOR GTAW TORCHES − READ BEFORE USING SR6 (TIG) 2018-01 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: Proposition 65 Warnings
D Use only genuine replacement parts from the manufacturer. READ INSTRUCTIONS. D Perform installation, maintenance, and service according to the Owner’s Manuals, industry standards, and national, state, and loc- al codes. D Read and follow all labels and the Owner’s Manual carefully before installing, operating, or servicing unit. -
Page 7: Section 2 − Consignes De Sécurité − Lire Avant Utilisation
SECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE AVANT UTILISATION SR6(TIG)_2018−01_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 8: Proposition Californienne 65 Avertissements
LIRE LES INSTRUCTIONS. LES PIÈCES CHAUDES peuvent provoquer des brûlures. D Lire et appliquer les instructions sur les étiquettes et Mode d’emploi avant D Laisser refroidir la torche avant de le toucher. l’installation, l’utilisation ou l’entretien de D Ne pas toucher d’objets métalliques chauds. l’appareil. -
Page 9: Section 3 − Specifications
SECTION 3 − SPECIFICATIONS 3-1. Specifications Model A-250 A-250V Amperage Rating 250 Amps w/Argon Gas At 60% Duty Cycle DCEN; 200 Amps w/Argon Gas At 60%duty Cycle ACHF Cooling Method Tungsten Size .040 Thru 5/32 in. (0.5 Thru 4.0 mm) Cable Options 25 ft (7.6 m) Two-Piece Rubber Dimensions... -
Page 10: Connecting Torch
4-2. Connecting Torch With Two-Piece Cable Turn Off welding power source power before installing torch. Obtain the following hose: Gas Hose With 5/8-18 Right- Hand Fittings If applicable, install high-frequency unit. Connections Regulator/Flowmeter Torch Without Gas Valve Gas Cylinder Welding Power Source Torch Power Cable Torch Gas-In Hose Work Clamp... -
Page 11: Section 5 − Maintenance & Troubleshooting
SECTION 5 − MAINTENANCE & TROUBLESHOOTING 5-1. Routine Maintenance Disconnect torch before maintaining. n = Check Z = Change ~ = Clean l = Replace * To be done by Factory Authorized Service Agent Daily n Nozzle For Cracks − l If Necessary n Check Tungsten Preparation (See Section 6) Weekly Collet For Wear −... - Page 12 Trouble Remedy Excessive tungsten electrode con- Select proper size and type of tungsten. Properly prepare tungsten according to Section 6. sumption. Check polarity setting on welding power source (see welding power source Owner’s manual). Check for proper gas flow rate. Check manufacture’s recommendations. If torch is water cooled, check torch and cables for water leaks.
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Page 13: Section 6 − Selecting And Preparing A Tungsten For Dc Or Ac Welding With Inverter Machines
SECTION 6 − SELECTING AND PREPARING A TUNGSTEN FOR DC OR AC WELDING WITH INVERTER MACHINES gtaw_Inverter_2018-01 Whenever possible and practical, use DC weld output instead of AC weld output. 6-1. Selecting Tungsten Electrode ( Wear Clean Gloves To Prevent Contamination Of Tungsten A. -
Page 14: Preparing Tungsten Electrode For Dc Electrode Negative (Dcen) Welding
6-2. Preparing Tungsten Electrode For DC Electrode Negative (DCEN) Welding Or AC Welding With Inverter Machines Grinding the tungsten electrode produces dust and flying sparks which can cause injury and start fires. Use local exhaust (forced ventilation) at the grinder or wear an approved respirator. Read MSDS for safety information. -
Page 15: Section 7 − Parts List
SECTION 7 − PARTS LIST 805615-A Figure 7-1. Assembly For A-250, A-250V, And 2-Piece Power Cable OM-282751 Page 11... - Page 16 Quantity Model Item Dia. Part A-250V A-250 Mkgs. Description Figure 7-1. Assembly For A-250, A-250V And 2-Piece Power Cable ....♦57N75 Nozzle, Alumina GL LG #6 (3/8 in.) .
- Page 17 Quantity Model Item Dia. Part A-250V A-250 Mkgs. Description Figure 7-1. Assembly For A-250, A-250V And 2-Piece Power Cable (continued) ....♦13N08 Nozzle, Alumina #4 (1/4 in.) .
- Page 18 Quantity Model Item Dia. Part A-250 A-250V Mkgs. Description Figure 7-1. Assembly For A-250, A-250V And 2-Piece Power Cable (continued) ....♦300M Backcap Medium .
- Page 19 Effective January 1, 2018 (Equipment with a serial number preface of MJ or newer) This limited warranty supersedes all previous Miller warranties and is exclusive with no other guarantees or warranties expressed or implied. Warranty Questions? LIMITED WARRANTY − Subject to the terms and conditions below, 6 Months —...
- Page 20 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 2018 Miller Electric Mfg. LLC 2018−01...