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From Hobart to You Thank you and congratulations on choosing Hobart. 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. This Owner’s Manual is designed to help you get the most out of your Hobart products.
SECTION 1 – SAFETY PRECAUTIONS – READ BEFORE USING rom _nd_10/02 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.
BUILDUP OF GAS can injure or kill. FLYING METAL can injure eyes. D Shut off shielding gas supply when not in use. D Welding, chipping, wire brushing, and grinding D Always ventilate confined spaces or use cause sparks and flying metal. As welds cool, they can throw off slag.
MOVING PARTS can cause injury. ENGINE EXHAUST GASES can kill. D Keep away from fans, belts, and rotors. D Use equipment outside in open, well-ventilated D Keep all doors, panels, covers, and guards areas. D If used in a closed area, vent engine exhaust closed and securely in place.
READ INSTRUCTIONS. D Locate welding operation 100 meters from any sensitive elec- tronic equipment. D Use only genuine MILLER/Hobart replacement D Be sure this welding machine is installed and grounded parts. according to this manual.
SECTION 2 – CONSIGNES DE SÉCURITÉ – LIRE AVANT UTILISATION rom_10_02fre 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 !
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 Pour empêcher tout démarrage accidentel pendant les travaux d’entretien, L’EXPLOSION DE LA BATTERIE peut débrancher le câble négatif (–) de batterie de la borne. RENDRE AVEUGLE. D Ne pas approcher les mains, cheveux, vêtements lâches et outils des orga- nes mobiles.
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 Height 33-1/2 in (851 mm) Width 18-1/2 in (470 mm) Y Do not exceed tilt angles or engine could Depth 38 in (965 mm) be damaged or unit could tip. 4 HOLES 4 HOLES Y Do not move or operate unit where it could 18 in (457 mm) tip.
4-4. Fuel Consumption (All Models) 197 254 4-5. 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 170 Amperes CC/DC 6 Minutes Welding 4 Minutes Resting 3 Minutes Welding...
4-6. Volt-Ampere Curves The volt-ampere curve shows the minimum and maximum voltage and amperage output capabilities of the welding generator. Curves of all other settings fall between the curves shown. 197 253 Notes MATERIAL THICKNESS REFERENCE CHART 24 Gauge (.025 in) 22 Gauge (.031 in) 20 Gauge (.037 in) 18 Gauge (.050 in)
SECTION 5 – INSTALLATION -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 (Onan-Powered Units) Check all fluids daily. Engine must be cold and on a level surface. Unit is shipped with 10W30 engine oil. Engine stops if oil pressure gets too low. Follow run-in procedure in engine manual. Full This unit has a low oil pressure shut- Full...
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 the Battery Y Connect negative (–) cable last. – Tools Needed: 1/2 in Ref. 202 069-A / Ref. 802 341 / Ref. S-0756-D 5-6. Installing Exhaust Pipe Y Engine backfire can cause se- vere burns or other injuries. Do not point exhaust pipe to- ward control panel.
5-7. Connecting to Weld Output Terminals Negative (–) Weld Output Terminal Positive (+) Weld Output Terminal For Direct Current Electrode Posi- tive (DCEP), connect work cable to Negative (–) terminal and electrode holder cable Positive terminal. For Direct Current Electrode Nega- tive (DCEN), reverse...
5-9. Amperage Selection Table For Stick (SMAW) Electrodes Use table on front panel to se- lect correct amperage for the electrode being used. Ref. 202 069-A Notes Work like a Pro! Pros weld and cut safely. Read the safety rules at the beginning of this manual.
SECTION 6 – OPERATING THE WELDING GENERATOR NOTE If the unit is extremely overloaded, weld and generator power will stop. Turn unit off and restart to reset the generator protection circuit and restore weld and generator power output. If the rated output of the unit is exceeded, engine speed may vary rapidly until the weld or generator power load is reduced.
SECTION 7 – OPERATING AUXILIARY EQUIPMENT NOTE If the unit is extremely overloaded, weld and generator power will stop. Turn unit off and restart to reset the generator protection circuit and restore weld and generator power output. If the rated output of the unit is exceeded, engine speed may vary rapidly until the weld or generator power load is reduced.
7-2. Optional Generator Power Receptacles Y If unit does not have GFCI re- ceptacles, GFCI- protected extension cord. Combined output of all receptacles limited to 10 kVA/kW rating of the generator. GFCI Receptacle Option 120 V 20 A AC GFCI Recep- tacles GFCI2 and GFCI3 GFCI2 and GFCI3 supply 60 Hz single-phase power at weld/power...
8-2. Routine Maintenance (Onan-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 also Engine Manual and maintenance label. Recycle Service engine more often if used in severe condi- engine tions.
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 vacuum inside. During heavy service, clean monthly. 8-3. Servicing Air Cleaner (Onan-Powered Units) Y Stop engine.
8-4. Overload Protection (Onan-Powered Units) Y Stop engine. Disconnect Tools Needed: negative (–) battery cable. If the unit is extremely over- loaded, weld and generator 3/8 in power will stop. Turn unit off and restart to reset the genera- tor protection circuit and re- store weld and generator pow- er output.
8-6. Changing Engine Oil, Oil Filter, and Fuel Filter (Onan-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 ac- cording to engine owner’s manual. Y Close valve and valve cap before adding oil and running engine.
8-7. Adjusting Engine Speed (Onan-Powered Units) After tuning engine, check engine speeds with a tachometer (see table). If necessary, adjust speeds as follows: ± 2200 100 rpm Start engine and run until warm. ± Remove wrapper to access speed 3700 50 rpm adjustments.
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 also Engine Manual and maintenance label. Recycle Service engine more often if used in severe condi- engine tions.
Every 500 h Service welding generator Repair or replace cracked brushes and slip rings. Service cables. more often in dirty conditions.* Every 1000 h Blow out or vacuum inside. During heavy service, clean monthly. 9-3. Servicing Air Cleaner (Kohler-Powered Units) Y Stop engine.
9-4. Overload Protection (Kohler-Powered Units) Y Stop engine. Tools Needed: If the unit is extremely over- loaded, weld and generator power will stop. Turn unit off and restart to reset the genera- 3/8 in tor protection circuit and re- store weld and generator pow- er output.
9-6. 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.
9-7. Adjusting Engine Speed (Kohler-Powered Units) After tuning engine, check engine speeds with a tachometer (see table). If necessary, adjust speeds as follows: ± 2200 50 rpm Start engine and run until warm. Remove wrapper to access speed ± 3700 50 rpm adjustments.
SECTION 10 – TROUBLESHOOTING 10-1. Troubleshooting A. Welding Trouble Remedy No weld output. Check control settings. Check weld connections. Check fuse F1 and replace if open (see Section 8-4 or 9-4). Unit overloaded. Stop unit and reduce load. Restart unit to reset generator protection circuit and resume operation.
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Trouble Remedy Erratic power output at generator pow- Check fuel level. er ac receptacles. Check engine speed and adjust if necessary (see Section 8-7 or 9-7). Check receptacle wiring and connections. Have Factory Authorized Service Agent check brushes and slip rings. C.
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...
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.
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...
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...
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 °...
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 –...
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.
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 – PARTS LIST Hardware is common and not available unless listed. Kohler only 47 – Fig 13-2 20 – Fig 13–3 802 343-D Figure 13-1. Main Assembly (Onan Engine Shown) OM-945 Page 52...
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Item Dia. Part Mkgs. Description Quantity Figure 13-1. Main Assembly ....+193 777 Wrapper, ........... .
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Item Dia. Part Mkgs. Description Quantity Figure 13-1. Main Assembly (Continued) ....181 057 Cover, Base ..........
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Item Dia. Part Mkgs. Description Quantity Figure 13-2. Panel, Front w/Components (Figure 13-1 Item 47) ....198 122 Stand–off Support, Pc Card .250w/Post&lock .500 .
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1-877-HOBART1 HSW-25 spot welder models effective with Serial No. KK200262 and newer. for your local This limited warranty supersedes all previous Hobart warranties and is exclusive with Hobart distributor. no other guarantees or warranties expressed or implied. Hobart products are serviced by Hobart or Miller Authorized Service Agencies.
Call 1-877-Hobart1 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 2003 Hobart Welding Products. 1/03...
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