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Harbor Freight Tools 66787 - page 1
240 VOL T ARC/TIG INVERTER WELDER AND TIG WELDING T ORCH Model 66787 SET UP AND OPERA TING INSTRUCTIONS Visit our website at: http://www .harborfreight.com Read this material before using this product. Failure to do so can result in serious injury . SA VE THIS MANUAL. Copyright © 2009 by Harbor Freight T ools ® . All rights reserved. No portion o ...
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Harbor Freight Tools 66787 - page 2
Page 2 SKU 66787 For technical questions, please call 1-800-444-3353. CONTENTS IMPORT ANT SAFETY INFORMA TION............................................................................3 General Safety Rules...........................................................................................3 SpecicSafetyRules.................... ...
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Harbor Freight Tools 66787 - page 3
Page 3 SKU 66787 For technical questions, please call 1-800-444-3353. SA VE THIS MANUAL Keep this manual for the safety warn- ings and precautions, assembly , operating, inspection, maintenance and cleaning pro- cedures. W rite the product’s serial number in the back of the manual (or month and year of purchase if product has no num- ber). Keep t ...
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Harbor Freight Tools 66787 - page 4
Page 4 SKU 66787 For technical questions, please call 1-800-444-3353. Do not expose power tools to rain b. or wet conditions. W ater entering a power tool will increase the risk of electric shock. Do not abuse the cord. Never use c. the cord for pulling or unplugging the power tool. Keep cord away from heat, oil, sharp edges or moving parts. Damage ...
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Harbor Freight Tools 66787 - page 5
Page 5 SKU 66787 For technical questions, please call 1-800-444-3353. Service 5. Have your power tool serviced by a. a qualied repair person using only identical replacement parts. This will ensure that the safety of the power tool is maintained. SpecicSafetyRules Maintain labels and nameplates on 1. the tool. These carry important safe ...
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Harbor Freight Tools 66787 - page 6
Page 6 SKU 66787 For technical questions, please call 1-800-444-3353. • Avoid operating alone. • Do not use with power switch locked on. • Properly maintain and inspect to avoid electrical shock. • Any power cord must be properly grounded. Ground Fault Circuit Inter- rupter (GFCI) should also be imple- mented – it prevents sustained elec- ...
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Harbor Freight Tools 66787 - page 7
Page 7 SKU 66787 For technical questions, please call 1-800-444-3353. proved method for eliminating the hazard. Do not dispose of hot slag in con- • tainers holding combustible materi- als. Keep a re extinguisher nearby and know how to use it. After spot welding, make a thorough • examination for evidence of re. Be aware that easily-visib ...
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Harbor Freight Tools 66787 - page 8
Page 8 SKU 66787 For technical questions, please call 1-800-444-3353. tions for the specic welding or cut - ting situation. W ARNING: Handling the Power 21. Cord on this product will expose you to lead, a chemical known to the State of California to cause cancer , birth defects, and other reproductive harm. W ash hands after handling. (Californi ...
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Harbor Freight Tools 66787 - page 9
Page 9 SKU 66787 For technical questions, please call 1-800-444-3353. SPECIFICA TIONS Electrical Requirements 240V~ / 60 Hz / 25A max. Power Cord: SJT 12A WG x 3C Power Plug: 3-Prong, 240 V AC (Not Included) Output Amperage Range 10-130 Amps Maximum Open Circuit V oltage 61V Duty Cycle 40% @ 130 Amps 60% @ 120 Amps 100% @ 80 Amps Maximum Welding Ca ...
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Harbor Freight Tools 66787 - page 10
Page 10 SKU 66787 For technical questions, please call 1-800-444-3353. WELDER FEA TURES Electrode Holder (8): 1. Connect the Electrode Holder Cable to the POSI- TIVE T erminal located at the front of the Welder . (See Figure A.) Ground Clamp (9): 2. Connect the Ground Clamp Cable to the NEGA TIVE T erminal located on the front of the Welder . (See ...
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Harbor Freight Tools 66787 - page 11
Page 1 1 SKU 66787 For technical questions, please call 1-800-444-3353. OPERA TING INSTRUCTIONS Read the ENTIRE IMPORT ANT SAFETY INFORMA TION section at the beginning of this manual including all text under subheadings therein before set up or use of this product. Note: For additional information regarding the parts listed in the following pages, ...
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Harbor Freight Tools 66787 - page 12
Page 12 SKU 66787 For technical questions, please call 1-800-444-3353. Protective gear must be worn when using the Welder; ANSI- approved, arc shaded, eye protection, a full face shield, heavy duty work gloves, a welding apron, respirator , and heavy-duty work clothes without pockets should be worn when using this product. Do not look at the ignite ...
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Harbor Freight Tools 66787 - page 13
Page 13 SKU 66787 For technical questions, please call 1-800-444-3353. Wear a NIOSH-approved respirator to avoid breathing arc fumes. Stroke the area to be welded with the 1 1. Electrode to ignite the arc. Never tap the Electrode into the welding sur- face to ignite the arc. This damages its external coating on the Electrode which prevents oxygen i ...
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Harbor Freight Tools 66787 - page 14
Page 14 SKU 66787 For technical questions, please call 1-800-444-3353. grounded, 240 V~, GFCI-protected receptacle and turn the Welder on. T urn the Gas Flow Knob on the torch 5. counterclockwise to allow the shield- ing gas to ow . T ilt the torch forward, towards the 6. workpiece. Keep a constant distance between the torch and the workpiece bu ...
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Harbor Freight Tools 66787 - page 15
Page 15 SKU 66787 For technical questions, please call 1-800-444-3353. TROUBLESHOOTING Problem Possible Cause(s) Likely Solution(s) Welder will not turn on. No power at electrical outlet. 1. Power Cord not connected. 2. Line voltage incorrect. 3. Check power at electrical outlet. 1. Check that Power Cord is plugged 2. in. Make sure the Welder is pl ...
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Harbor Freight Tools 66787 - page 16
Page 16 SKU 66787 For technical questions, please call 1-800-444-3353. WELDER P ARTS LIST AND ASSEMBL Y DIAGRAM Part # Description Qty . Part # Description Qty . 1 Housing 1 11 T ransformer 1 2 Strap 1 12 Heat Sink 3 3 Potentiometer 1 13 T apping Screw (4.2 x 9.5) 14 4 Potentiometer Dial 1 14 Fan 2 5 LED Light 2 15 Cooling V ent 1 6 Quick Connector ...
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Harbor Freight Tools 66787 - page 17
Page 17 SKU 66787 For technical questions, please call 1-800-444-3353. Part Description Qty . 1a T orch and Cable 1 2a Rod Holder 1 3a Ceramic Nozzle size 5 1 3b Ceramic Nozzle size 6 1 4a Collet Holder 1.6 mm (1/16”) 1 4b Collet Holder 2.4 mm (3/32”) 1 5a Collet 1.6 mm (1/16”) 1 5b Collet 2.4 mm (3/32”) 1 6a Plug 1 1a 2a 3a 3b 4a 4b 5a 5b ...
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Harbor Freight Tools 66787 - page 18
Page 18 SKU 66787 For technical questions, please call 1-800-444-3353. Record Product’ s Serial Number Here: Note: If product has no serial number , record month and year of purchase instead. Note: Some parts are listed and shown for illustration purposes only , and are not avail- able individually as replacement parts. LIMITED 90 DA Y W ARRANTY ...
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