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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 - READ BEFORE USING som 2011−10 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.
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D Remove stick electrode from holder or cut off welding wire at FUMES AND GASES can be hazardous. contact tip when not in use. D Wear oil-free protective garments such as leather gloves, heavy Welding produces fumes and gases. Breathing shirt, cuffless trousers, high shoes, and a cap.
1-3. Additional Symbols For Installation, Operation, And Maintenance FIRE OR EXPLOSION hazard. BATTERY EXPLOSION can injure. D Do not install or place unit on, over, or near D Do not use welder to charge batteries or jump combustible surfaces. start vehicles unless it has a battery charging feature designed for this purpose.
1-4. California Proposition 65 Warnings Welding or cutting equipment produces fumes or gases This product contains chemicals, including lead, known to which contain chemicals known to the State of California to the state of California to cause cancer, birth defects, or other cause birth defects and, in some cases, cancer.
SECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE AVANT UTILISATION fre_som_2011−10 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.
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Il reste une TENSION DC NON NÉGLIGEABLE dans LE SOUDAGE peut provoquer un les sources de soudage onduleur UNE FOIS incendie ou une explosion. l’alimentation coupée. Le soudage effectué sur des conteneurs fermés tels D Arrêter les convertisseurs, débrancher le courant électrique et que des réservoirs, tambours ou des conduites peut décharger les condensateurs d’alimentation selon les instructions provoquer leur éclatement.
ACCUMULATIONS LES BOUTEILLES peuvent exploser risquent de provoquer des blessures si elles sont endommagées. ou même la mort. Les bouteilles de gaz comprimé contiennent du gaz sous haute pression. Si une bouteille est D Fermer l’alimentation du gaz comprimé en cas endommagée, elle peut exploser.
Les PIÈCES MOBILES peuvent RAYONNEMENT HAUTE causer des blessures. FRÉQUENCE (H.F.) risque provoquer des interférences. D Ne pas s’approcher des organes mobiles. D Ne pas s’approcher des points de coincement D Le rayonnement haute fréquence (H.F.) peut tels que des rouleaux de commande. provoquer des interférences avec les équi- pements de radio−navigation et de com- LES FILS DE SOUDAGE peuvent...
2-5. Principales normes de sécurité Safety in Welding, Cutting, and Allied Processes, ANSI Standard Z49.1, Spectrum Way, Suite 100, Ontario, Canada L4W 5NS (phone: is available as a free download from the American Welding Society at 800-463-6727, website: www.csa-international.org). http://www.aws.org or purchased from Global Engineering Documents Safe Practice For Occupational And Educational Eye And Face Protec- (phone: 1-877-413-5184, website: www.global.ihs.com).
3-2. Connecting Spool Gun To Millermatic 212 Auto-Set Gun Trigger Plug Insert plug into receptacle, and tighten threaded collar. Weld Cable Spoolmate 200 Shielding Gas Hose Route weld cable through opening in front panel. Route gas hose along side panel or...
3-5. Installing Gas Supply Obtain gas cylinder and chain to running gear, wall, other stationary 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. Close valve.
3-6. Adjusting Drive Roll And Spool Brake Pressure Cover Thumbscrew Loosen thumbscrew and rotate cover open. 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 4 − OPERATION 4-1. 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 5 − MAINTENANCE & TROUBLESHOOTING 5-1. Routine Maintenance Disconnect power before maintaining. Maintain more often during severe conditions. n = Check Z = Change ~ = Clean l = Replace Reference * To be done by Factory Authorized Service Agent Every Months l Damaged Or Unreadable l Repair Or Replace...
5-3. Replacing Head Tube Liner The standard head tube liner will accommodate wire diameters of .023 thru.035 (0.8 thru 0.9 mm)wire size. Old Style Liner Head Tube Loosen nut and remove head tube from gun. Liner Pull liner out of gun. Insert liner into gun and reinstall head tube onto gun.
5-4. Gun Drive Assembly Maintenance Retract wire onto spool. Setscrew Drive Roll Use wire brush to clean drive roll. Install drive roll with desired groove down, and turn drive roll so one set- screw faces flat side of shaft. Bearing Use wire brush to clean bearing.
5-6. Replacing Diffuser Turn Off welding power source. Nozzle Contact Tip To remove, see Section 5-2. Phillips Head Screw Liner Housing Liner Loosen screw and remove liner housing and liner. Diffuser Remove diffuser and replace. Tools Needed: Ref. 243 741-B 5-7.
SECTION 7 − PARTS LIST All hardware is contained in hardware kit P/N 244 657. 243 742-B Figure 7-1. Complete Assembly OM-243 762 Page 24...
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Item Dia. Part Mkgs. Description Quantity Figure 7-1. Complete Assembly ... . . 186 405 Nozzle, Scr Type .562 Orif x 1.437 Lg ....... . . 186 406 .
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Hardware is common and not available unless listed. 244 691-B Figure 7-2. Optional 9” Barrel Item Dia. Part Mkgs. Description Quantity 300 592 Figure 7-2. Optional 9” Barrel ... . . 186 405 Nozzle .
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Hardware is common and not available unless listed. 244 693-B Figure 7-3. Optional Heavy Duty Barrel Item Dia. Part Mkgs. Description Quantity 300 593 Figure 7-3. Optional Heavy Duty Barrel ... . . 199 386 Nozzle .
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Hardware is common and not available unless listed. 244 689-B Figure 7-4. Optional Curved Barrel Item Dia. Part Mkgs. Description Quantity 300 591 Figure 7-4. Optional Curved Barrel ... . . 198 429 Nozzle .
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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 (.313 in) 3/8 in (.375 in) 1/2 in (.5 in)
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Effective January 1, 2012 (Equipment with a serial number preface of MC or newer) This limited warranty supersedes all previous Miller warranties and is exclusive with no other Warranty Questions? guarantees or warranties expressed or implied. LIMITED WARRANTY − Subject to the terms and conditions 90 Days —...