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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 rom _nd_10/04 Y Warning: Protect yourself and others from injury — read and follow these precautions. 1-1. Symbol Usage Means Warning! Watch Out! There are possible hazards with this procedure! The possible hazards are shown in the adjoining symbols.
WELDING can cause fire or explosion. HOT PARTS can cause severe burns. D Allow cooling period before maintaining. Welding on closed containers, such as tanks, drums, or D Wear protective gloves and clothing when working on pipes, can cause them to blow up. Sparks can fly off from the welding arc.
STEAM AND HOT COOLANT can burn. BATTERY ACID can BURN SKIN and EYES. D Do not tip battery. D If possible, check coolant level when engine is cold to avoid scalding. D Replace damaged battery. D Always check coolant level at overflow tank, if pres- D Flush eyes and skin immediately with water.
READ INSTRUCTIONS. ARC WELDING can cause interference. D Use only genuine MILLER/Hobart replacement D Electromagnetic energy can interfere with sensitive parts. electronic equipment such as microprocessors, computers, and computer-driven equipment such as D Perform engine and air compressor (if applicable) robots.
SECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE AVANT UTILISATION rom_fre 10/04 Y Avertissement: Protégez vous et les autres des blessures − lisez et suivez ces précautions. 2-1. Signification des symboles Signifie Mise en garde ! Soyez vigilant ! Cette procédure Ce groupe de symboles si- présente des risques de danger ! Ceux-ci sont identifiés par gnifie Mise en garde !
D Suivre les recommandations dans OSHA 1910.252(a)(2)(iv) et NFPA 51B LES ACCUMULATIONS DE GAZ ris- pour les travaux à chaud et avoir de la surveillance et un extincteur à proxi- quent de provoquer des blessures ou mité. même la mort. DES PARTICULES VOLANTES peuvent blesser les yeux.
D Ne pas approcher les mains, cheveux, vêtements lâches et outils des orga- L’EXPLOSION DE LA BATTERIE peut nes mobiles. RENDRE AVEUGLE. D Remettre en place les panneaux ou les dispositifs de protection et fermer les portes à la fin des travaux d’entretien et avant de faire démarrer le mo- teur.
LE SURCHAUFFEMENT peut endom- LIRE LES INSTRUCTIONS. mager le moteur électrique. D Utiliser seulement les pièces de rechange d’origine. D Effectuer la maintenance du moteur et du compres- D Arrêter ou déconnecter l’équipement avant de dé- seur (si applicable) suivant ce manuel et le manuel du marrer ou d’arrêter le moteur.
4-2. Dimensions, Weights, and Operating Angles Dimensions 33-1/2 in (851 mm) Height (To Top Of Exhaust) Width 20 in (508 mm) Y Do not exceed tilt angles or engine could Y Do not exceed tilt angles or engine could Depth 45-3/8 in (1153 mm) be damaged or unit could tip.
4-6. Volt-Ampere Curves The volt-ampere curve shows the A. For CC/AC Mode minimum and maximum voltage and amperage output capabilities of the welding generator. Curves of all other settings fall between the curves shown. B. For CC/DC Mode C. For CV/DC Mode 166 024-A / 166 025-A / 166 026-A OM-4434 Page 12...
4-7. Duty Cycle Duty cycle is the percentage of 10 minutes that unit can weld at rated load without overheating. Y Exceeding duty cycle can damage unit void warranty. Continuous Welding 100% Duty Cycle at 225 Amperes CC/AC, 210 Amperes CC/DC, 200 Amperes CV/DC 119 454-A Notes Work like a Pro!
SECTION 5 − INSTALLATION 5-1. Installing Welding Generator Y Do not weld on base. Welding on base can cause fuel tank fire or explosion. Bolt unit down using holes provided in base. Movement Y Always securely fasten weld- Y Do not lift unit from end. ing generator onto transport vehicle or trailer and comply with all DOT and other applica-...
5-2. Engine Prestart Checks (Robin-Powered Units) Check all fluids daily. Engine must be cold and on a level surface. Unit is shipped with 10W30 engine oil. Follow run-in procedure in en- gine manual. This unit has a low oil pressure shutdown switch.
5-3. Engine Prestart Checks (Kohler-Powered Units) Check all fluids daily. Engine must be cold and on a level surface. Unit is shipped with 10W30 engine oil. Follow run-in procedure in en- gine manual. This unit has a low oil pressure Full shutdown switch.
5-4. Activating The Dry Charge Battery (If Applicable) Remove battery from unit. Eye Protection − Safety Glasses Or Face Shield Rubber Gloves Vent Caps Sulfuric Acid Electrolyte (1.265 Specific Gravity) Well Fill each cell with electrolyte to bottom of well (maximum). Y Do not overfill battery cells.
5-5. Connecting Or Replacing the Battery Connecting The Battery Y Connect negative (−) cable last. − − Replacing The Battery Remove end panel to replace battery. Y Connect negative (−) cable last. − − Tools Needed: 3/8, 1/2 in 803 847 / 803 849 / Ref. S-0756-D 5-6.
5-7. Connecting to Weld Output Terminals See Section 6 for examples of typical weld connections and control settings. Work Weld Output Terminal Electrode Weld Output Terminal Connect work cable to Work terminal. Connect electrode holder cable or electrode weld cable to Electrode ter- minal for Stick and MIG welding.
SECTION 6 − OPERATING THE WELDING GENERATOR 6-1. Front Panel Controls Ref. 218 646-A Engine Control Switch Engine Hour Meter Tig position, or voltage range when switch is in Wire position. Use switch to start engine, select speed, and Weld Process Selector Switch stop engine.
6-2. Typical Stick Welding Connections And Control Settings Y Stop engine. This section provides general guidelines and may not suit all applications. For best arc starts and best The control panel shows the typi- results using weld and generator cal settings for welding with a power together, use a low 7018 (1/8 in) electrode.
6-3. Typical MIG Welding Connections And Settings A. Solid Wire Applications Y Stop engine. This section provides general guide- lines and may not suit all ap- plications. Typical Control Settings For .035 (ER70S-3) The control panel shows the typical Solid Wire − Short Circuit Transfer settings for welding with .035 (ER70S-3) solid wire.
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B. Self-Shielded Flux Core Wire Applications Y Stop engine. This section provides general guidelines and may not suit all applications. Typical Control Settings For .045 (71T-11) Self-Shielded Flux Core Wire The control panel shows the typi- cal settings for welding with .045 (71T-11) self-shielded flux core wire.
6-4. Typical MIG Connections And Settings Using Weld Control And Spoolgun Typical Settings For 4043 (.035) Aluminum On 1/8 in Material: Note Coarse Range and Weld Tools Needed: Process switch settings. 3/4 in Work Connect to unused contactor terminal. Plug and sensing lead not used in this application.
SECTION 7 − OPERATING AUXILIARY EQUIPMENT 7-1. Standard Receptacles Y If unit does not have GFCI re- ceptacles, use GFCI-protected extension cord. Generator power decreases as weld current increases. Set Fine Control R1 at 10 for full generator power. 240 V 50 A AC Receptacle RC1 RC1 supplies 60 Hz single-phase power at weld/power speed.
7-2. Optional Generator Power Receptacles Y If unit does not have GFCI recep- tacles, use GFCI-protected exten- sion cord. Generator power decreases as weld current increases. Set Fine Control R1 at 10 for full genera- tor power. Combined output of all receptacles limited to 10 kVA/kW rating of the generator.
7-3. Wiring Optional 240 Volt Plug The plug can be wired for a 240 V, 2-wire load or a 120/240V, 3-wire load. See circuit diagram. Plug Wired for 120/240 V, 3-Wire Load Current Available in Amperes When wired for 120 V loads, each duplex receptacle shares a load 240 V Each 120 V Duplex...
SECTION 8 − MAINTENANCE (Robin-POWERED UNITS) 8-1. Routine Maintenance (Robin-Powered Units) Note Follow the storage procedure in the engine owner’s manual if the unit will not be used for an extended period. Y Stop engine before maintaining. See Engine Manual and Maintenance Label for Recycle important start-up, service, and storage informa- engine...
Every 500 h Service welding generator Repair or brushes and slip rings. Service replace cracked more often in dirty conditions.* cables. Check valve clearance.* Every 1000 h Blow out or vacuum inside. During heavy service, clean monthly. 8-2. Maintenance Label (Robin-Powered Units) OM-4434 Page 29...
8-3. Servicing Air Cleaner (Robin-Powered Units) Y Stop engine. Y Do not run engine without air cleaner or with dirty element. Wrapper (Foam Element) Wash wrapper with soap and water solution. Allow wrapper to air dry completely. Spread 1 tablespoon SAE 30 oil evenly into wrapper.
8-5. Changing Engine Oil, Oil Filter, and Fuel Filter (Robin-Powered Units) Y Stop engine and let cool. Oil Drain Valve 1/2 ID x 7 in Hose Oil Filter Change engine oil and filter accord- ing to engine owner’s manual. Y Close valve and valve cap before adding running engine.
8-6. Adjusting Engine Speed (Robin-Powered Units) After tuning engine, check engine speeds with a tachometer (see table). If necessary, adjust speeds as follows: 2200 − 2300 rpm Start engine and run until warm. (36.6 − 38.3 Hz) Remove rear panel and air cleaner 3675 −...
9-2. Routine Maintenance (Kohler-Powered Units) Note Follow the storage procedure in the engine owner’s manual if the unit will not be used for an extended period. Y Stop engine before maintaining. See Engine Manual and Maintenance Label for impor- Recycle tant start-up, service, and storage information.
9-3. Servicing Air Cleaner (Kohler-Powered Units) Y Stop engine. Y Do not run engine without air cleaner or with dirty element. Wrapper (Foam Element) Wash wrapper with soap and water solution. Allow wrapper to air dry completely. Spread 1 tablespoon SAE 30 oil evenly into wrapper.
9-4. Changing Engine Oil, Oil Filter, and Fuel Filter (Kohler-Powered Units) Y Stop engine and let cool. Oil Drain Valve 1/2 ID x 7 in Hose Oil Filter Change engine oil and filter accord- ing to engine owner’s manual. Y Close valve and valve cap before adding running engine.
9-5. Adjusting Engine Speed (Kohler-Powered Units) After tuning engine, check engine speeds with a tachometer (see table). If necessary, adjust speeds as follows: 2200 − 2300 rpm Start engine and run until warm. (36.6 − 38.3 Hz) Turn Fine Control to 10. 3675 −...
9-6. Overload Protection (Kohler-Powered Units) Y Stop engine. Disconnect negative (−) battery cable. Fuse F1 (See Parts List) F1 protects the weld excitation winding from overload. If F1 opens, Fuse F6 located in weld output stops or is low. harness behind left Fuse F2 (See Parts List) side door.
SECTION 10 − TROUBLESHOOTING 10-1. Welding Troubleshooting Trouble Remedy Low or no weld output; generator pow- Check control settings. er output okay at ac receptacles. Check weld connections. Check fuse F1, and replace if open (see Section 8-4 or 9-6). Have Factory Authorized Service Agent check brushes, slip rings, capacitor C1, and integrated rectifi- ers SR2 and SR3.
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Trouble Remedy No generator power or weld output. Be sure all equipment is disconnected from receptacles when starting unit. Check fuses F1 and F2, and replace if open (see Section 8-4 or 9-6). Check plug PLG6 connection. Have Factory Authorized Service Agent check brushes, slip rings, capacitor C1, and integrated rectifi- ers SR2 and SR3.
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Trouble Remedy Battery Discharges between uses. Clean battery, terminals, and posts with baking soda and water solution; rinse with clear water. Periodically recharge battery (approximately every 3 months). Replace battery. Check voltage regulator and connections according to engine manual. Engine idles but does not come up to Have Factory Authorized Service Agent check auto idle module PC1, and current transformer CT1.
SECTION 12 − GENERATOR POWER GUIDELINES NOTE The views in this section are intended to be representative of all engine-driven welding generators. Your unit may differ from those shown. 12-1. Selecting Equipment Generator Power Receptacles − Neutral Bonded To Frame 3-Prong Plug From Case Grounded Equipment 2-Prong Plug From Double...
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12-3. Grounding When Supplying Building Systems Equipment Grounding Terminal Grounding Cable GND/PE Use #10 AWG or larger insulated copper wire. Ground Device Y Ground generator to system earth ground if supplying power to a premises (home, shop, farm) wiring system. Use ground device as stated in electrical codes.
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12-5. Approximate Power Requirements For Industrial Motors Industrial Motors Rating Starting Watts Running Watts Split Phase 1/8 HP 1/6 HP 1225 1/4 HP 1600 1/3 HP 2100 1/2 HP 3175 Capacitor Start-Induction Run 1/3 HP 2020 1/2 HP 3075 3/4 HP 4500 1400 1 HP...
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12-7. Approximate Power Requirements For Contractor Equipment Contractor Rating Starting Watts Running Watts Hand Drill 1/4 in 3/8 in 1/2 in Circular Saw 6-1/2 in 7-1/4 in 8-1/4 in 1400 1400 Table Saw 9 in 4500 1500 10 in 6300 1800 Band Saw 14 in...
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12-8. Power Required To Start Motor Motor Start Code AC MOTOR Running Amperage VOLTS AMPS Motor HP CODE Motor Voltage PHASE To find starting amperage: Step 1: Find code and use table to find kVA/HP. If code is not listed, multiply running amperage by six to find starting amperage.
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12-10. Typical Connections To Supply Standby Power Y Properly install and ground this equipment according to its Owner’s Manual and national, state, and local codes. Fused Utility Welding Disconnect Electrical Generator Transfer Switch Switch Service Output (If Required) Essential Loads Y Have only qualified persons perform Switch transfers the electrical load from Connect generator with temporary or perma-...
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12-11. Selecting Extension Cord (Use Shortest Cord Possible) Cord Lengths for 120 Volt Loads Y If unit does not have GFCI receptacles, use GFCI-protected extension cord. Maximum Allowable Cord Length in ft (m) for Conductor Size (AWG)* Current Load (Watts) (Amperes) 350 (106) 225 (68)
SECTION 13 − STICK WELDING (SMAW) GUIDELINES 13-1. Stick Welding Procedure Y Weld current starts when electrode touches work- piece. Y Weld current can damage electronic parts in vehicles. Disconnect both battery cables before welding on a vehicle. Place work clamp as close to the weld as possible.
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13-2. Electrode and Amperage Selection Chart 3/32 6010 5/32 & 3/16 6011 7/32 6010 DEEP MIN. PREP, ROUGH 1/16 HIGH SPATTER 6011 DEEP 5/64 6013 EP,EN GENERAL 3/32 SMOOTH, EASY, 6013 7014 EP,EN FAST 5/32 3/16 LOW HYDROGEN, 7018 STRONG 7/32 FLAT SMOOTH, EASY,...
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13-5. Positioning Electrode Holder ° ° ° ° End View of Work Angle Side View of Electrode Angle GROOVE WELDS ° ° ° ° End View of Work Angle Side View of Electrode Angle FILLET WELDS S-0060 13-6. Poor Weld Bead Characteristics Large Spatter Deposits Rough, Uneven Bead Slight Crater During Welding...
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13-8. Conditions That Affect Weld Bead Shape NOTE Weld bead shape is affected by electrode angle, arc length, travel speed, and thickness of base metal. Correct Angle ° - ° Angle Too Large Angle Too Small Drag ELECTRODE ANGLE Spatter Normal Too Long Too Short...
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13-10. Butt Joints Tack Welds Prevent edges of joint from drawing together ahead of electrode by tack welding the materials in position be- fore final weld. Square Groove Weld Good for materials up to 3/16 in (5 mm) thick. Single V-Groove Weld Good for materials 3/16 −...
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13-13. Weld Test Vise Weld Joint Hammer Strike weld joint in direction shown. A good weld bends over but does not break. 2 To 3 in (51-76 mm) 2 To 3 in (51-76 mm) 1/4 in (6.4 mm) S-0057-B 13-14. Troubleshooting − Porosity Porosity −...
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13-16. Troubleshooting − Incomplete Fusion Incomplete Fusion − failure of weld metal to fuse completely with base metal or a preceeding weld bead. Possible Causes Corrective Actions Insufficient heat input. Increase amperage. Select larger electrode and increase amperage. Improper welding technique. Place stringer bead in proper location(s) at joint during welding.
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13-19. Troubleshooting − Burn-Through Burn-Through − weld metal melting completely through base metal resulting in holes where no metal remains. Possible Causes Corrective Actions Excessive heat input. Select lower amperage. Use smaller electrode. Increase and/or maintain steady travel speed. 13-20. Troubleshooting − Waviness Of Bead Waviness Of Bead −...
SECTION 14 − MIG WELDING (GMAW) GUIDELINES 14-1. Typical MIG Process Connections Using A Voltage-Sensing Wire Feeder Y Weld current can damage electronic parts in vehicles. Disconnect both battery cables before welding on a vehicle. Place work clamp as Constant close to the weld as possible.
14-3. Typical MIG Process Control Settings NOTE These settings are guidelines only. Material and wire type, joint design, fitup, position, shielding gas, etc. affect settings. Test welds to be sure they comply to specifications. Material thickness determines weld 1/8 or parameters.
14-4. Holding And Positioning Welding Gun NOTE Welding wire is energized when gun trigger is pressed. Before lowering helmet and pressing trigger, be sure wire is no more than 1/2 in (13 mm) past end of nozzle, and tip of wire is positioned correctly on seam. Hold Gun and Control Gun Trigger Workpiece...
14-5. Conditions That Affect Weld Bead Shape NOTE Weld bead shape depends on gun angle, direction of travel, electrode extension (stickout), travel speed, thickness of base metal, wire feed speed (weld current), and voltage. ° Push ° Perpendicular Drag GUN ANGLES AND WELD BEAD PROFILES Short Normal Long...
14-6. Gun Movement During Welding NOTE Normally, a single stringer bead is satisfactory for most narrow groove weld joints; however, for wide groove weld joints or bridging across gaps, a weave bead or multiple stringer beads works better. Stringer Bead − Steady Movement Along Seam Weave Bead −...
14-9. Troubleshooting − Excessive Spatter Excessive Spatter − scattering of molten metal particles that cool to solid form near weld bead. S-0636 Possible Causes Corrective Actions Wire feed speed too high. Select lower wire feed speed. Voltage too high. Select lower voltage range. Electrode extension (stickout) too long.
14-12. Troubleshooting − Lack Of Penetration Lack Of Penetration − shallow fusion between weld metal and base metal. Lack of Penetration Good Penetration S-0638 Possible Causes Corrective Actions Improper joint preparation. Material too thick. Joint preparation and design must provide access to bottom of groove while maintaining proper welding wire extension and arc characteristics.
14-15. Troubleshooting − Waviness Of Bead Waviness Of Bead − weld metal that is not parallel and does not cover joint formed by base metal. S-0641 Possible Causes Corrective Actions Welding wire extends too far out of nozzle. Be sure welding wire extends not more than 1/2 in (13 mm) beyond nozzle. Unsteady hand.
14-17. Common MIG Shielding Gases This is a general chart for common gases and where they are used. Many different combinations (mixtures) of shielding gases have been developed over the years. The most commonly used shielding gases are listed in the following table.
SECTION 15 − PARTS LIST Hardware is common and not available unless listed. 14 15 22−FIG. 14−2 49−FIG. 14−3 803 959−C Figure 15-1. Main Assembly (Kohler Engine Shown) OM-4434 Page 68...
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Item Dia. Part Mkgs. Description Quantity Figure 15-1. Main Assembly ....+211366 Panel, Side Rh ..........
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803 881 Figure 15-3. Panel, Front w/Components Item Dia. Part Mkgs. Description Quantity Figure 15-3. Panel, Front w/Components (Figure 15-1 Item 49) ......Nameplate (Order By Model And Serial No.) .
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Item Dia. Part Mkgs. Description Quantity Figure 15-3. Panel, Front w/Components (Continued) ....217346 Bezel Assy (Includes) ..........
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Effective January 1, 2004 (Equipment with a serial number preface of “LE” or newer) This limited warranty supersedes all previous Miller warranties and is exclusive with no other Warranty Questions? guarantees or warranties expressed or implied. Call LIMITED WARRANTY − Subject to the terms and conditions Induction Heating Coils and Blankets below, Miller Electric Mfg.
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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. PRINTED IN USA 2004 Miller Electric Mfg. Co. 10/04...