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MANUAL NO: U5278 OWNER'S MANUAL WIRE FEEDER MODEL: CM-741 U5278 DO NOT DESTROY IMPORTANT: Read and understand the entire contents of this manual, with special emphasis on the safety material throughout the manual, before installing, operating, or maintaining this equipment. This equipment and this manual are for use only by persons trained and experienced in the safety operation of welding equipment.
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Notice : Machine export to Europe This product does not meet the requirements specified in the EC Directives which are the EU safety ordinance that was enforced starting on January 1, 1995. Please make sure that this product is not allowed to bring into the EU after January 1, 1995 as it is.
No. U5278 TABLE OF CONTENTS 1. SAFETY INFORMATION・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 2. ARC WELDING SAFETY PRECAUTIONS・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 3. CHECKING OF QUANTITY OF THE ACCESSORIES・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 4. NAME OF PARTS・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 5. CARRYING AND INSTALLING OF THE WIRE FEEDER・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 9 6. CONNECTION PROCEDURE・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 10 7. WELDING PREPARATION・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 13 8.
No. U5278 1. SAFETY INFORMATION The following safety alert symbols and signal words are used throughout this manual to identify various hazards and special instructions. WARNING gives information regarding possible personal injury WARNING or loss of life. CAUTION refers to minor personal injury or possible equipment CAUTION damage.
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No. U5278 2. ARC WELDING SAFETY PRECAUTIONS (continued) ELECTRIC SHOCK can kill. Touching live electrical parts can cause fatal shocks or severe burns. The electrode and work circuits are electrically live whenever the output is on. The power line and internal circuits of this equipment are also live when the line disconnect switch is on.
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No. U5278 2. ARC WELDING SAFETY PRECAUTIONS (continued) WELDING can cause fire and explosion. Sparks and spatter fly off from the welding arc. The flying sparks and hot metal, spatter, hot base metal, and hot equipment can cause fire and explosion. Accidental contact of electrode or welding wire to metal object can cause sparks, overheating, or fire.
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No. U5278 2. ARC WELDING SAFETY PRECAUTIONS (continued) CYLINDER can explode if damaged. A shielding gas cylinder contains high-pressure gas. If damaged, a cylinder can explode. Since gas cylinders are normally part of the welding process, be sure to treat them carefully. Use only correct shielding gas cylinders, gas regulator, hoses, and fittings designed for the specific application;...
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No. U5278 2. ARC WELDING SAFETY PRECAUTIONS (continued) ARC WELDING work areas are potentially hazardous. FALLING or MOVING machine can cause serious injury. When hanging the welding power source by a crane, do not use the carrying handle. Put the welding power source and wire feeder solidly on a flat surface. Do not pull the welding power source across a floor laid with cables and hoses.
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No. U5278 PRINCIPAL SAFETY STANDARDS Arc welding equipment – Installation and use, Technical Specification IEC 62081, from International Electro technical Commission Arc welding equipment Part 1: Welding power sources IEC 60974-1, from International Electro technical Commission Safety in Welding and Cutting, ANSI Standard Z49.1, from American Welding Society. Safety and Health Standards, OSHA 29 CFR 1910, from Superintendent of Documents, U.S.
No. U5278 3. CHECKING OF QUANTITY OF THE ACCESSORIES Make sure that you have the items below before you use the wire feeder. Wire feeder Wire feeder Accessory Description Specification Quantity Gas hose (9.8ft [3m]) K5430A00 ① Hose cover U1997C03 ②...
No. U5278 5. CARRYING AND INSTALLING OF THE WIRE FEEDER 5.1 Transportation WARNING Observe the following to avoid damage to the wire feeder or physical injury when carrying the equipment. ● Do not touch the charging parts inside or outside of the wire feeder. ●...
No. U5278 6. CONNECTION PROCEDURE CAUTION Follow the instructions below to avoid electric shock. ∗ Do not touch the charging parts, otherwise this will result in fatal shock and severe burns. ● Do not touch the charging parts of the welding machine. ●...
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No. U5278 6. CONNECTION PROCEDURE (continued) 6.2 Connection of the Torch Cable WARNING ∗ Touching the charging parts may result in fatal electric shock and severe burns. ● Do not touch the charging parts of the welding machine. ● Have a qualified electric engineer ground the case of the welding power source and the base metal or jig electrically connected in accordance with a local low.
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No. U5278 6. CONNECTION PROCEDURE (continued) 6.4 Connection of the Gas Hose WARNING ● You may suffer from danger of suffocation caused by lack of oxygen when shield gas keeps drifting in a closed place. Be sure to turn off the shield gas at the main when the welding power source is not in use.
No. U5278 7. WELDING PREPERATION 7.1 Fitting of Wire 1. Loosen the screw to clamp the cap knob. 2. Detach the cap knob from the wire reel shaft. 3. Mount the wire reel on the wire reel shaft. NOTE: Put the wire reel stop pin into the wire reel stop hole. Wire reel stop pin Wire reel stop hole Clamp screw...
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Use the right groove of the feed roll for the wire size. Wire size mark The feed roll of φ0.045in [1.2mm] wire size is mounted on the CM-741 wire feeder when shipping. Replacement of the feed roll 1. Remove the hexagon socket cap screws fixing the feed roll.
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No. U5278 7. WELDING PREPERATION (continued) Adjusting of the wire pressure and straightener • Set to the proper wire pressure for the wire type by turning the pressure handle. • The numeral on the pressure scale set with the right pressure handle should be correspond to the one set with the left pressure handle.
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No. U5278 7. WELDING PREPERATION (continued) 7.4 Feeding Wire by Inching Operation WARNING ● Do not look into the tip hole to check for the rate of wire feeding while inching. CAUTION ● Keep away your hands, fingers, hair or clothes from the rotating parts of the feed roll, etc.
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No. U5278 7. WELDING PREPERATION (continued) 7.5 Hanging the Wire Feeder Hanging bracket (optional) CAUTION ● When hanging the wire feeder, firmly fix the cap knob and clamp screw to prevent the device from dropping. ● Do not use the carrying handle of the wire feeder to hang the wire feeder.
No. U5278 8. MAINTENANCE AND TROUBLESHOOTING 8.1 Carrying Out Maintenance WARNING ● Do not touch the charging parts inside or outside of the wire feeder. ● Disconnect the welding power source by turning off the line disconnect switch in the power box to avoid an electric shock before carrying the equipment. Problem Cause Solution...
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No. U5278 8. MAINTENANCE AND TROUBLESHOOTING (continued) < Schematic Diagram> Base metal direct detection (-) CAUTION ● Never attempt to disassemble the feed motor. This may result in damage to the wire feeder. ● Never check the amount of brushing friction or replace the brush. Service life of the brush varies depending on ambient temperature and welding condition, etc., but normally the service life is about 4,000 hours.
No. U5278 9. PARTS LIST 9.1 Main body and Wiring • Please contact your local dealer to order parts. (See the back cover for telephone and fax numbers, and mailing addresses.) Ref. Part number Description Q’ty Remarks CM-7401 U5185U00 Frame Assembly K970H90 Strike...
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No. U5278 9. PARTS LIST (continued) Fig. 1 Main Body and Wiring Assembly ―21―...
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No. U5278 9. PARTS LIST (continued) 9.2 Wire Feeder Ref. Part number Description Q’ty Remarks U5209B01 Bracket Hexagon socket cap screw M6 x 25 U5185B08 Coil spring U5185B02 Pressure roll holder pin U5185S00 Pressure roll holder (R) Assembly U5185T00 Pressure roll holder (L) Assembly K5439C00 Pressure roll...
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No. U5278 9.PARTS LIST (continued) Fig. 2 Wire Feeder Assembly 9.3 Central Adapter Ref. Part number Description Q’ty Remarks 4813-001 Gas solenoid valve W-31156 U4179D01 Hose elbow U1997D01 Gas connector U1997D02 Flange Fig. 3 Gas Piping Assembly ―23―...
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No. U5278 9. PARTS LIST (continued) 9.5 Optional Accessory (1)Extension cable/hose Control cable (10P) Cable length 16ft [5m] 33ft [10m] 49ft [15m] 66ft [20m] Model BKCPJ-1005 BKCPJ-1010 BKCPJ-1015 BKCPJ-1020 Gas hose Cable length 16ft [5m] 33ft [10m] 49ft [15m] 66ft [20m] Model BKGG-0605 BKGG-0610...
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No. U5278 9. PARTS LIST (continued) 2.Accessories Part No. Description Q’ty Remarks U5209B00 Feeder Assy U5209J01 For Steel Guide Adapter U5204J01 For Aluminum U5185B05 Center Guide ( 1.0-1.6 ) For Steel U5209M01 Center Guide ( 2.0 ) For Steel U5204B02 Center Guide ( 0.8-1.0 ) For Aluminum U5204B03...
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No. U5278 9. PARTS LIST (continued) 3. Water Kit Part No. K5516A00 7/18-14UNF 5/8-18UNF 5/8-18UNF 5/8-18UNF Part No. Description Q’ty Remarks U5204N00 Power Cable U5204P00 Power Connection U5204G00 Supply Water Hose U5204F00 Condensate Water Hose 4. Aluminum Kit Part No. K5517A00 Part No.
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