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- Page 1 ® Bernard TGX® Series Semi-Automatic Air-Cooled MIG Gun OWNER'S MANUAL TG083-1.0 May 2021 Semi-Automatic, Air-Cooled, MIG (GMAW) Welding Gun Tregaskiss.com/TechnicalSupport 1-855-MIGWELD (644-9353) (US & Canada) +1-519-737-3000 (International)
- Page 2 Thank You for Choosing Bernard Thank you for selecting a Bernard product. Before installing, compare the equipment received against the invoice to verify that the shipment is complete and undamaged. It is the responsibility of the purchaser to file all claims of damage or loss that may have occurred during transit with the carrier. The owner’s manual contains general information, instructions and maintenance to help better maintain your MIG gun or peripheral. Please read, understand and follow all safety precautions. While every precaution has been taken to assure the accuracy of this owner’s manual, Bernard assumes no responsibility for errors or omissions. Bernard assumes no liability for damages resulting from the use of information contained herein. The information presented in this owner’s manual is accurate to the best of our knowledge at the time of printing. Please reference Tregaskiss.com for updated material. For customer support and special applications, please call the Bernard Customer Service Department at 1-855-MIGWELD (644-9353) (US & Canada) or +1-519-737-3000 (International), fax 1-708-946-6726, or email at cs@itwmig.com. Our trained Customer Service Team is available between 8:00 a.m. and 5:30 p.m. EST, and will answer your product application or repair questions. Bernard manufactures premium semi-automatic (GMAW) and FCAW (flux-cored) welding guns, consumables, accessories and manual arc products. For more information on other premium Bernard products, contact your local Bernard distributor or visit us on the web at Tregaskiss.com. Subject to Change – The information presented in this manual is accurate to the best of our knowledge at the time of printing.
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Page 3: Table Of Contents
TABLE OF CONTENTS SECTION 1 — SAFETY PRECAUTIONS — READ BEFORE USING 1-1 Symbol Usage 1-2 Arc Welding Hazards 1-3 California Proposition 65 Warnings 1-4 Principal Safety Standards 1-5 EMF Information 1-6 Commercial Warranty SECTION 2 — CONSIGNES DE SÉCURITÉ — LIRE AVANT UTILISATION 2-1 Symboles utilisés 2-2 Dangers relatifs au soudage à l'arc 2-3 Proposition californienne 65 Avertissements 2-4 Principales normes de sécurité 2-5 Informations relatives aux CEM SECTION 3 — PRECAUCIONES DE SEGURIDAD — LEA ANTES DE USAR 3-1 Uso de símbolos 3-2 Peligros en soldadura de arco 3-3 Advertencias de la Proposición 65 del estado de California... - Page 4 SECTION 7 — TECHNICAL DATA 7-1 Neck Dimensions SECTION 8 — PARTS LIST 8-1 400 amp Model SECTION 9 — TROUBLESHOOTING 9-1 Troubleshooting Table NOTES ADDITIONAL SUPPORT MATERIALS TG083-1.0...
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Page 5: Section 1 - Safety Precautions - Read Before Using
SECTION 1 — SAFETY PRECAUTIONS — READ BEFORE USING Protect yourself and others from injury – read, follow, and save these important safety precautions and ELECTRIC SHOCK can kill. operating instructions. Always wear dry insulating gloves. ... - Page 6 ARC RAYS can burn eyes and skin. WELDING WIRE can injure. Arc rays from the welding process produce intense Keep hands and body away from gun tip when visible and invisible (ultraviolet and infrared) rays trigger is pressed. that can burn eyes and skin. Sparks fly off from the weld. READ INSTRUCTIONS. Wear an approved welding helmet fitted with a proper shade of filter lenses to protect your face and eyes from arc rays and Read and follow all labels and the Owner's sparks when welding or watching (see ANSI Z49.1 and Z87.1 Manual carefully before installing, operating, listed in Principal Safety Standards). or servicing unit. Read the safety information Wear approved safety glasses with side shields under your at the beginning of the Manual and in each section. helmet. Use only genuine replacement parts from the manufacturer. Use protective screens or barriers to protect others from Perform installation, maintenance, and service according to flash, glare and sparks; warn others not to watch the arc. the Owner's Manuals, industry standards, and national, state, ...
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Page 7: California Proposition 65 Warnings
1-3 California Proposition 65 Warnings WARNING: This product can expose you to chemicals For more information, go to www.P65Warnings.ca.gov. including lead, which are known to the state of California to cause cancer and birth defects or other reproductive harm. 1-4 Principal Safety Standards Safety in Welding, Cutting, and Allied Processes, American Welding Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P- Society standard ANSI Standard Z49.1. Website: www.aws.org. 1 from Compressed Gas Association. Website: www.cganet.com. Safe Practice For Occupational And Educational Eye And Face Safety in Welding, Cutting, and Allied Processes, CSA Standard Protection, ANSI Standard Z87.1, from American National ... -
Page 8: Commercial Warranty
1-6 Commercial Warranty Product is warranted to be free from defects in material and Bernard and Tregaskiss reserve the right to repair, replace, or workmanship for the period specified below after the sale by an refund the purchase price of non-conforming product. Product authorized Buyer. found not defective will be returned to the Buyer after notification by the Bernard and Tregaskiss Customer Service department. Any ® Bernard BTB Semi-Automatic Air-Cooled MIG Guns: 1 year; TOUGH GUN Reamer component part replaced or repaired pursuant Lifetime warranty on straight handles, straight handle to the Warranty herein shall be further warranted for a period of six months after delivery of the replacement. switches, and rear strain relief ® Bernard W-Gun™ and T-Gun™ Semi-Automatic Water- Bernard and Tregaskiss make no other warranty of any kind, Cooled MIG Guns: 180 days expressed or implied, including, but not limited to the warranties of ® ®... -
Page 9: Section 2 - Consignes De Sécurité - Lire Avant Utilisation
SECTION 2 — CONSIGNES DE SÉCURITÉ — LIRE AVANT UTILISATION Pour écarter les risques de blessure pour vous-même et pour autrui — lire, appliquer et ranger en lieu sûr UN CHOC ÉLECTRIQUE peut tuer. ces consignes relatives aux précautions de sécurité et au mode opératoire. - Page 10 L'ACCUMULATION DE VAPEURS peut causer LES FILS DE SOUDAGE peuvent provoquer des lésions ou la mort. des blessures. Éloigner les mains et le corps de la buse du Quand on n’utilise pas le gaz comprimé de pistolet après avoir appuyé sur la gâchette. protection, fermer le robinet de la bouteille. Assurer toujours la ventilation des zones fermées ou utiliser un appareil respiratoire avec alimentation en air. LIRE LES INSTRUCTIONS.
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Page 11: Proposition Californienne 65 Avertissements
2-3 Proposition californienne 65 Avertissements AVERTISSEMENT – Ce produit peut vous exposer à des Pour plus d’informations, consulter www.P65Warnings.ca.gov. produits chimiques tels que le plomb, reconnus par l’État de Californie comme cancérigènes et sources de malformations ou d’autres troubles de la reproduction 2-4 Principales normes de sécurité Safety in Welding, Cutting, and Allied Processes, American Welding Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P- Society standard ANSI Standard Z49.1. Website: www.aws.org. 1 from Compressed Gas Association. Website: www.cganet.com. Safe Practice For Occupational And Educational Eye And Face Safety in Welding, Cutting, and Allied Processes, CSA Standard ... -
Page 12: Section 3 - Precauciones De Seguridad - Lea Antes De Usar
SECTION 3 — PRECAUCIONES DE SEGURIDAD — LEA ANTES DE USAR Protéjase usted mismo y a otros contra lesiones — lea, cumpla y conserve estas importantes UNA DESCARGA ELÉCTRICA puede matarlo. precauciones de seguridad e instrucciones de utilización. Siempre use guantes aislantes secos. ... - Page 13 EL AMONTONAMIENTO DE GAS puede El ALAMBRE de SOLDAR puede causarle enfermarle o matarle. heridas. Mantenga las manos y el cuerpo lejos del tubo Cierre el suministro de gas comprimido de contacto de la antorcha cuando se haya cuando no lo use. presionado el gatillo. Siempre dé ventilación a espacios cerrados o use un respirador aprobado que reemplaza el aire. LEER INSTRUCCIONES.
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Page 14: Advertencias De La Proposición 65 Del Estado De California
3-3 Advertencias de la Proposición 65 del estado de California ADVERTENCIA: Este producto puede exponerlo a químicos, Para obtener más información, acceda a incluso plomo, que el estado de California conoce como www.P65Warnings.ca.gov. causantes de cáncer, defectos de nacimiento u otros daños reproductivos. 3-4 Estándares principales de seguridad Safety in Welding, Cutting, and Allied Processes, American Welding Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P- Society standard ANSI Standard Z49.1. Website: www.aws.org. 1 from Compressed Gas Association. Website: www.cganet.com. Safe Practice For Occupational And Educational Eye And Face Safety in Welding, Cutting, and Allied Processes, CSA Standard ... -
Page 15: Section 4 - Assembly
SECTION 4 — ASSEMBLY 4-1 Assembly Instructions - Easy As 1-2-3! MIG Guns Only NOTE: Applies to all TGX ® semi-automatic air-cooled XS and Figure 4-A XL series gun models. 1. Remove gun from box and extend to full length. 2. Slide nozzle off front end of gun. 3. Thread retaining head off front end of gun. 4. Remove power pin from package and thread on to rear of gun using a 3/4" (19 mm) wrench on the rear block and a 5/8" (16 mm) or 3/4" (19 mm) wrench on power pin. Figure 4-B 5. Torque to 18 ft-lbs (24.4 Nm). 6. Install power pin / block insulator. 7. Remove liner from package and extend to full length. 8. ... -
Page 16: Section 5 - Installation
SECTION 5 — INSTALLATION 5-1 Installing Gun to Wire Feeder For most power pins: Figure 5-A 1. Insert power pin to shoulder and secure. 2. Insert gun control plug to control housing of MIG gun. 3. Insert control plug into feeder. 4. Feed welding wire into power pin by hand and tighten drive rolls. TG083-1.0... -
Page 17: Installing Quick-Connect Block To Feeder
5-2 Installing Quick-Connect Block to Feeder 1. Insert the correct feeder adaptor liner for desired wire diameter Figure 5-B (2 provided) flush with the threaded end of the feeder adaptor. 2. Tighten set screw. 3. Thread feeder adaptor into quick-connect block and tighten. 4. Position assembly into feeder adaptor and trim liner within 1/16" (1.6 mm) of the drive rolls and remove burrs if necessary. 5. Secure assembly into feeder. 6. Thread gas hose nipple into feeder gas fitting. 7. Connect power cable to 1/2" (13 mm) power bolt with appropriate lug. Figure 5-C 8. Tighten all connections. 9. Feed welding wire through assembly by hand and tighten drive rolls. 5-3 Installing Gun to Quick-Connect Block ... - Page 18 IMPORTANT: Ensure correct liner and contact tip are utilized. Figure 5-D Examine and replace power pin o-rings if necessary. 1. Guide welding wire into power pin. 2. Insert power pin to shoulder. 3. Tighten thumbscrews securely. 4. Connect control plug leads to leads on rear of gun. NOTE: If installing the Euro version of the quick-connect block, connect leads from the quick-connect block directly tot he leads on the gun. 5. Insert control plug into feeder. 6. With gun laying straightened, pull trigger and feed wire through gun. NOTE: It may be necessary to remove contact tip when feeding small wire sizes. 7. Recheck: a. proper gas flow; b. drive roll pressure; c. ...
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Page 19: Installing/Replacing Power Pin To Gun
5-4 Installing/Replacing Power Pin to Gun NOTE: The rear handle and screws do not have to be removed when Figure 5-E installing the two-piece power pins. 1. Thread power pin into rear housing. 2. Tighten the power pin into the rear housing using a 3/4" (19 mm) wrench on the rear block and a 5/8" (16 mm) or 3/4" (19 mm) wrench on power pin. Torque to 18 ft-lbs (24.4 Nm). 3. IMPORTANT: The thread-in two-piece power pin has a taper to seat and lock the power pin in the rear handle block. Tighten the power pin in the block with a wrench to ensure that pin remains in place. 4. Install liner. TG083-1.0... -
Page 20: Section 6 - Replacement
SECTION 6 — REPLACEMENT 6-1 Changing Consumables IMPORTANT: Neck insulator must be in place before welding to properly insulate neck armor. Be sure all parts are tightened well before welding. The retaining head must be tightened with a 5/8" (16 mm) wrench to prevent the contact tip from overheating. To prevent scoring on heavy duty retaining heads, do not use pliers. A. Nozzle C. Retaining Head 1. Pull slip-on nozzles off with a twisting motion. 1. Thread retaining head onto neck with a 5/8" (16 mm) wrench. 2. Torque to 80 in-lbs (9 Nm). 2. When installing the nozzle, ensure that it is fully seated. 3. DO NOT use pliers to remove or tighten the heavy duty retaining head or scoring may result. B. Contact Tip 1. ... -
Page 21: Changing Conventional Liner
6-2 Changing Conventional Liner IMPORTANT: For guns equipped with thread-in power pins, Figure 6-A Bernard ® , or Euro connector, follow the procedure below. On Miller ® style guns, liner is held captive by a guide cap, which must be removed and replaced with changing the liner. NOTE: Ensure power supply is off and gun is removed from feeder before proceeding. 1. Remove nozzle, contact tip and retaining head. 2. If power pin is thread-in type, using a 10 mm wrench, turn Figure 6-B thread-in liner retainer counterclockwise until liner is free from the power pin. 3. With gun straightened, grip conduit liner with pliers and remove. 4. Feed replacement liner through gun using short strokes to avoid kinking. Twist liner clockwise Figure 6-C Figure 6-D TG083-1.0... - Page 22 1. Slide outer jacket under front handle and bring front handle up Figure 6-E to neck, replace switch and switch housing, and secure. See 1- 1 Changing the Switch on page 1. 2. At rear of gun, slide rear handle up over outer jacket. Figure 6-F 3. Attach rear power block to power cable. 4. Attach gas line and water line with new clamps and crimp to power block. 5. Slide rear handle to rear power block and secure with mounting screws. 6. Put liner through gun and tighten. Figure 6-G 7. Install liner. See section 6-4 Changing the Liner on page 20. TG083-1.0...
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Page 23: Changing The Neck
6-3 Changing the Neck 1. Remove liner from gun. See section 6-4 Changing the Liner on Figure 6-H page 20. 2. Twist handle locking caps. 3. Pull handle caps away from handle. 4. Remove Phillips screw. 5. Separate handle. 6. Remove switch from nest in handle. 7. Unthread power cable. 8. Cut off water line and conduit clamp and pull hoses off barbed fittings. 9. Slide on new clamps on water line and conduit. 10. Thread power cable on connection and tighten. 11. Push water line and conduit all the way to the base of the Figure 6-I fittings and clamp. 12. Reposition handle and switch. 13. Reinstall handle locking caps and screw. Figure 6-J TG083-1.0... -
Page 24: Changing The Liner
6-4 Changing the Liner NOTE: For guns equipped with thread-in power pins, Bernard or Figure 6-K Euro connectors, the procedure is the same. On Miller style power pins, liner is held captive by a guide cap with must be removed and replaced with changing liner. IMPORTANT: Ensure power supply is off and gun is removed from feeder before proceeding. 1. Remove nozzle, contact tip and retaining head. Figure 6-L 2. If power pin: a. Uses a liner set screw: Loosen the set screw using 5/64" Allen wrench. b. Is thread-in liner type: Using a 10 mm wrench, turn thread-in liner retainer counterclockwise until liner is free from the power pin. Figure 6-M 3. With gun straightened, grip conduit liner with pliers and remove. 4. Feed replacement liner through gun using short strokes to avoid kinking. Twist liner clockwise if necessary. 5. Using a 10 mm wrench, turn thread-in liner retainer in a ... -
Page 25: Changing Cable Assembly
6-5 Changing Cable Assembly 1. Remove nozzle, contact tip and retainer. Figure 6-N 2. Take out rear housing screws and pull out liner. 3. Pull the rear handle up the gun approximately 1 foot. Figure 6-O 4. Unscrew power cable from rear power block. 5. Cut clamps off the water-in (blue) line and gas (white) line. 6. Pull gas and water line off of power block. At this point, rear power block will be removed from gun. 7. Slide rear handle off gun. Figure 6-P 8. On front of gun, release front handle from neck. 9. Remove outer jacket by pulling outer jacket only from rear of gun. All that remains are the inner hoses attached to the neck and switch lead wires. Figure 6-Q 10. Unthread power cable from front of gun and replace with new one. TG083-1.0... - Page 26 1. Slide outer jacket under front handle and bring front handle up Figure 6-R to neck, replace switch and switch housing, and secure. See 1- 1 Changing the Switch on page 1. 2. At rear of gun, slide rear handle up over outer jacket. Figure 6-S 3. Attach rear power block to power cable. 4. Attach gas line and water line with new clamps and crimp to power block. 5. Slide rear handle to rear power block and secure with mounting screws. 6. Put liner through gun and tighten. Figure 6-T 7. Install liner. See section 6-4 Changing the Liner on page 20. TG083-1.0...
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Page 27: Section 7 - Technical Data
SECTION 7 — TECHNICAL DATA 7-1 Neck Dimensions Angle Inches Neck Inches Inches 45 degree 102.16 2.50 445-45 5.63 142.95 4.02 63.50 60 degree 130.56 2.50 445-60 4.99 126.75 5.14 63.50 TG083-1.0... -
Page 28: Section 8 - Parts List
SECTION 8 — PARTS LIST 8-1 400 amp Model ITEM PART # DESCRIPTION ITEM PART # DESCRIPTION See SP-TGUN Nozzle 412-4 Control plug lead AccuLock™ contact tip 642-xx* Outer jacket assembly See SP-TGUN TOUGH LOCK® contact tip 320-5 Jacket bushing D-ATSH AccuLock R gas diffuser 320-4 Rear handle cap 404-20 TOUGH LOCK retaining head 663-1-xx* Outer jacket 454-1-2 Retaining ring for TOUGH LOCK retaining head 663-1 Strain relief 402-6 O-ring for TOUGH LOCK retaining head 664-400... -
Page 29: Section 9 - Troubleshooting
3. Extreme heat or duty cycle. 3. Replace with heavy duty consumables. See appropriate Spec Sheet for details. 4. Short contact tip life. 1. Contact tip size 1. Replace with proper size. 2. Electrode eroding contact tip. 2. Inspect and/or change drive rolls. 3. Exceeding duty cycle. 3. Replace with properly rated Bernard MIG Gun. 5. Erratic arc. 1. Worn contact tip. 1. Replace contact tip. 2. Buildup inside of liner. 2. Replace liner, check condition of electrode. 3. Wrong tip size. 3. Replace with correct tip size. 4. Not enough bend in neck. 4. Replace with 45° or 60° neck. 6. Erratic wire feeding. - Page 30 8. Ruptured gas hose. 8. Repair or replace cable or line. 9. Control circuit loss. 9. See ‘Electrode does not feed’. 10. Worn, cut or missing o-rings. 10. Replace o-rings. 11. Loose fittings. 11. Tighten gun and cable connections to specified torque. See Section 1 — Replacement on page 1. 9. Gun running hot. 1. Exceeding duty cycle. 1. a. Replace with properly rated Bernard MIG Gun. b. Decrease parameters to within gun rating. 2. Loose or poor power connection. 2. a. Clean, tighten or replace cable grounding connection. b. Tighten gun and cable connections to specified torque. See Section 1 — Replacement on page 1. 10. Liner is discolored full 1. Short circuit to electrode. 1. Isolate electrode reel from feeder and drive block. Consult length.
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Page 31: Notes
NOTES TG083-1.0... -
Page 32: Additional Support Materials
ADDITIONAL SUPPORT MATERIALS For additional support materials such as Spec Sheets, troubleshooting information, how-to guides and videos, animations, online configurators and much more, please visit Bernard. Scan the QR Code with your smart phone for immediate access to Tregaskiss.com/TechnicalSupport. Scan to view the TGX ® Semi-Automatic Air-Cooled MIG Gun Owner’s Manual Scan to view the TOUGH LOCK ® Consumables Spec Sheet Scan to view additional Bernard ® Owner's Manuals and Spec Sheets Phone: 1-855-MIGWELD (644-9353) (US & Canada) Bernard +1-519-737-3000 (International) ...
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