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AC/DC TIG WELDER - 200 AMP
Model 91149
ASSEMBLY AND OPERATING INSTRUCTIONS
®
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our Web site at: http://www.harborfreight.com
©
®
Copyright
2005 by Harbor Freight Tools
. All rights reserved. No portion of this
manual or any artwork contained herein may be reproduced in any shape or form
without the express written consent of Harbor Freight Tools.
For technical questions, please call 1-800-444-3353.
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Table of Contents
Related Manuals for Chicago Electric 91149
Summary of Contents for Chicago Electric 91149
- Page 1 AC/DC TIG WELDER - 200 AMP Model 91149 ASSEMBLY AND OPERATING INSTRUCTIONS ® 3491 Mission Oaks Blvd., Camarillo, CA 93011 Visit our Web site at: http://www.harborfreight.com © ® Copyright 2005 by Harbor Freight Tools . All rights reserved. No portion of this manual or any artwork contained herein may be reproduced in any shape or form without the express written consent of Harbor Freight Tools.
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Page 2: Product Specifications
Do not operate welding equipment in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust. Welding equipment creates sparks which may ignite the dust or fumes. SKU 91149 For technical questions, please call 1-800-444-3353. PAGE 2... -
Page 3: Electrical Safety
Keep your hair, clothing, and gloves away from hot or moving parts. Loose clothes, jewelry, or long hair can be caught in hot or moving parts. (See page 6, number 3, for recommended safety clothing.) SKU 91149 For technical questions, please call 1-800-444-3353. PAGE 3... - Page 4 Check for misalignment or binding of moving parts, breakage of parts, and any other condition that may affect the equipment’s operation. If damaged, have the equipment serviced before using. Many accidents are caused by poorly maintained equipment. SKU 91149 For technical questions, please call 1-800-444-3353. PAGE 4...
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Page 5: Electrical Connection
For safety purposes, a qualified, certified, electrician must do this wiring connection. SYMBOLOGY Double Insulated Canadian Standards Association Underwriters Laboratories, Inc. Volts Alternating Current Amperes No Load Revolutions Figure A xxxx/min. per Minute (RPM) SKU 91149 For technical questions, please call 1-800-444-3353. PAGE 5... -
Page 6: Specific Safety Rules
Irritation of the eyes, nose, and throat are symptoms of inadequate ventilation. Take immediate steps to improve ventilation. Do not continue operations if symptoms persist. SKU 91149 For technical questions, please call 1-800-444-3353. PAGE 6... - Page 7 Vent closed containers, including castings, before preheating or welding. Read and understand all instructions and safety precautions as outlined in the manufacturer’s manual for the material you will weld. SKU 91149 For technical questions, please call 1-800-444-3353. PAGE 7...
- Page 8 Discharge the electrode to ground before handling. Performance of this Welder may vary depending on variations in local line voltage. Always turn OFF the Welder before performing any inspection, maintenance, or cleaning procedures. SKU 91149 For technical questions, please call 1-800-444-3353. PAGE 8...
- Page 9 It must be understood by the operator that common sense and caution are factors which cannot be built into this product, but must be supplied by the operator. SKU 91149 For technical questions, please call 1-800-444-3353. PAGE 9...
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Page 10: Product Overview
Other design features include; forced air cooling system by fan and overload protection. Figure B Part # Description Part # Description Front Panel MMA/TIG Selector Post-Gas Potentiometer Power Switch Hand Wheel AC/DC Main Selector SKU 91149 For technical questions, please call 1-800-444-3353. PAGE 10... -
Page 11: Back Panel Controls
Description Front Cover Negative Terminal 2-Pin Socket Gas Hose Outlet Positive Terminal FIGURE C BACK PANEL CONTROLS Part # Description Gas Hose Inlet FIGURE D Input Terminal Cover Cable Bracket SKU 91149 For technical questions, please call 1-800-444-3353. PAGE 11... - Page 12 Axle located at the rear of the Base (49). Secure both Wheels to the Axle by inserting one Roll Pin (55) through each end of the Axle. (See Figure E.) FIGURE E ROLL PIN (55) REAR WHEEL (54) FRONT CASTOR WHEEL (53) SKU 91149 For technical questions, please call 1-800-444-3353. PAGE 12...
- Page 13 (See Figure F.) GAS REGULATOR/FLOW METER (6A) CYLINDER CAP CYLINDER VALVE ARGON GAS FLOW ADJUST REGULATOR HOSE MIXED GAS CHAIN (7A) (NOT INCLUDED) BACK PANEL (33) GAS HOSE INLET (34) FIGURE F SKU 91149 For technical questions, please call 1-800-444-3353. PAGE 13...
- Page 14 AC MMA = The stick/electrode welding for mild steel. This is the simplest welding procedure. Move the TIG AC/TIG DC Selector (6) to this symbol: (See Figure B.) Move the AC/DC Main Selector (12) to this symbol: (See Figure B.) SKU 91149 For technical questions, please call 1-800-444-3353. PAGE 14...
- Page 15 (See Figure B.) A clockwise rotation increases the output current. A counterclockwise rotation decreases the output current. Turning the Hand Wheel drives the pointer which indicates the welding current. (See Figure B.) SKU 91149 For technical questions, please call 1-800-444-3353. PAGE 15...
- Page 16 40% Duty Cycle at 200 Amperes (AC) Using Mixed Gases 4 Minutes Welding 6 Minutes Resting Relation Between Duty Cycle And Weld Amperes. DC AC DUTY CYCLE (%) FIGURE G WELDING CURRENT (AMPs) SKU 91149 For technical questions, please call 1-800-444-3353. PAGE 16...
- Page 17 Figure H and Figure I below. Relation Between Size Of Electrode And Welding Current FIGURE H Relation Between Size Of Tungsten Electrode And Welding Current FIGURE I SKU 91149 For technical questions, please call 1-800-444-3353. PAGE 17...
- Page 18 Use larger welding leads. See Figure L for proper size of tungsten. See Figure L for proper size of tungsten. Properly sharpen electrode. See Figure L for proper size of tungsten. SKU 91149 For technical questions, please call 1-800-444-3353. PAGE 18...
- Page 19 When storing, make sure to store the Welder in a safe, clean, dry location out of reach of children and unauthorized users. All maintenance, service, and repairs not listed in this manual are only to be attempted by a qualified service technician. SKU 91149 For technical questions, please call 1-800-444-3353. PAGE 19...
- Page 20 CAUTION! All maintenance, service, and repairs not listed in this manual are only to be performed by a qualified service technician. SKU 91149 For technical questions, please call 1-800-444-3353. PAGE 20...
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Page 21: Please Read The Following Carefully
8-Pin Relay Rear Wheels 11-Pin Relay Socket Roll Pins 11-Pin Relay NOTE: Some parts are listed and shown for illustration purposes only, and are not available individually as replacement parts. SKU 91149 For technical questions, please call 1-800-444-3353. PAGE 21... - Page 22 ASSEMBLY DIAGRAM - WELDING MACHINE NOTE: Some parts are listed and shown for illustration purposes only, and are not available individually as replacement parts. SKU 91149 For technical questions, please call 1-800-444-3353. PAGE 22...
- Page 23 ELECTRICAL SCHEMATIC - WELDING MACHINE NOTE: Some parts are listed and shown for illustration purposes only, and are not available individually as replacement parts. SKU 91149 For technical questions, please call 1-800-444-3353. PAGE 23...
- Page 24 10A: CHIPPING HAMMER NOT SHOWN. 11A: WIRE BRUSH NOT SHOWN. 12A: WELDING MASK NOT SHOWN. NOTE: Some parts are listed and shown for illustration purposes only, and are not available individually as replacement parts. SKU 91149 For technical questions, please call 1-800-444-3353. PAGE 24...