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OM-1213 137531AQ 2017−04 Processes MIG (GMAW) Welding Description Feeder Gun Spoolmatic 15A And 30A File: MIG (GMAW) For product information, Owner’s Manual translations, and more, visit www.MillerWelds.com...
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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.
SECTION 1 −SAFETY PRECAUTIONS FOR GMAW WELDING GUNS − READ BEFORE USING SR7 (MIG) 2015-09 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.
NOISE can damage hearing. READ INSTRUCTIONS. D Read and follow all labels and the Owner’s Noise from some processes or equipment can damage hearing. Manual carefully before installing, operating, or servicing unit. Read the safety information at D Check for noise level limits exceeding those the beginning of the manual and in each specified by OSHA.
SECTION 2 − MESURES DE SÉCURITÉ VISANT LES PISTOLETS DE SOUDAGE GMAW − À LIRE AVANT UTILISATION SR7(MIG)_2015−09 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...
LES PIÈCES CHAUDES peuvent LES FILS DE SOUDAGE peuvent provoquer des brûlures. provoquer des blessures. D Laisser refroidir le pistolet avant de le toucher. D Éloigner les mains et le corps de la buse du D Ne pas toucher d’objets métalliques chauds. pistolet après avoir appuyé...
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 3-2. Miscellaneous Symbols And Definitions Some symbols are found only on CE products. Degree Of Amperes Volts...
5-2. Installing Wire Spool And Threading Welding Wire Top Cover Canister Canister Cover Thumbscrew (Canister Cover) Loosen thumbscrew and remove cover. Wire Spool Loosen wire from spool, cut off bent wire, and pull 6 in. (150 mm) of wire off spool. Pressure Roll Assembly Lift arm and open pressure roll assembly.
5-4. Connecting To 24 Volt Weld Control Gas Hose Connect fitting to regulator/flowme- ter (see Section 5-6). 24 Volt Weld Control Trigger Control Cord Insert plug into receptacle, and tighten threaded collar. Weld Cable Connect to positive (+) weld output terminal on welding power source according to its Owner’s Manual.
5-6. Installing Gas Supply Obtain gas cylinder and chain to running gear, wall, or other station- ary support so cylinder cannot fall and break off valve. Cylinder Valve Remove cap, stand to side of valve, and open valve slightly. Gas flow blows dust and dirt from valve.
5-7. Adjusting Drive Roll And Spool Brake Pressure Top Cover Canister Cover Thumbscrew Loosen thumbscrew and remove cover. Spool Cut welding wire off at contact tip. Retract wire onto spool and secure. Spool Brake Thumbnut Grasp spool in one hand and turn while adjusting spool brake thumb- nut.
SECTION 6 − OPERATION 6-1. Controls Trigger Press trigger to energize welding power source contactor (if applica- ble), start shielding gas flow, and begin wire feed. For shielding gas preflow and post- flow, lightly press trigger before and after welding. Wire Speed Control Use control to adjust wire feed speed.
SECTION 7 − MAINTENANCE & TROUBLESHOOTING Maintain more often Disconnect power before maintaining. during severe conditions. n = Check Z = Change ~ = Clean l = Replace * To be done by Factory Authorized Service Agent Daily n Check barrel clamp l Repair Or Replace screws for tightness.
7-2. Replacing Head Tube Liner The standard head tube liner will accommodate wire diameters from .030-1/16 wire size. Cover Screw Clamp Loosen clamp screws and remove clamp. Head Tube Remove head tube from gun. Liner Pull liner out of head tube. Insert liner into head tube and reinstall head tube onto gun.
7-3. Gun Drive Assembly Maintenance Retract wire onto spool. Setscrew Current Pick-Up Tab This tab helps prevent burnback caused by welding arcs inside the contact tip. This tab may be re- moved to provide an insulated drive roll. (If tab is removed, a smaller di- ameter contact tip is recom- mended.
7-6. Replacing Diffuser Turn Off welding power source. Nozzle FasTip To remove, see Section 7-1. Diffuser Remove diffuser and replace. Tools Needed: 3/8 in. Ref. 803 348-G 7-7. Troubleshooting Trouble Remedy No weld output; gun/feeder does not Secure weld control plug in 115 volts AC receptacle (see weld control Owner’s Manual). work.
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Item Part Description Quantity Figure 10-1. Consumables Flowchart Table 10-1. Nozzles ♦176238 ... . Nozzle, Spot Flat (Requires Diffuser 209099, Used With Any Heavy Duty FasTipt Contact Tip) ........♦176240 .
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Item Part Description Quantity Figure 10-1. Consumables Flowchart (Continued) Table 10-5. Value Multi−Turn Contact Tips* ♦071825 ... . .030 in (0.9 mm) ........... . ♦054202 .
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Notes SOCKET/WRENCH SELECTION TABLE SOCKET/WRENCH SELECTION TABLE (U.S. STANDARD) (METRIC) Specifications Socket or Wrench Size Specifications Socket or Wrench Size U.S. Bolt Decimal Bolt Bolt Decimal Bolt Diameter Equivalent Diameter Equivalent 1/4 in. .250 in. 3/8 in. 7/16 in. 6 mm .2362 in.
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Notes MATERIAL THICKNESS REFERENCE CHART 24 Gauge (.025 in.) 22 Gauge (.031 in.) 20 Gauge (.037 in.) 18 Gauge (.050 in.) 16 Gauge (.063 in.) 14 Gauge (.078 in.) 1/8 in. (.125 in.) 3/16 in. (.188 in.) 1/4 in. (.25 in.) 5/16 in.
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Effective January 1, 2017 (Equipment with a serial number preface of MH 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 —...
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