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READ ALL INSTRUCTIONS AND WARNINGS BEFORE USING THIS PRODUCT.
This manual provides important information on proper operation & maintenance. Every effort has been made to
ensure the accuracy of this manual. These instructions are not meant to cover every possible condition and situation
that may occur. We reserve the right to change this product at any time without prior notice.
IF THERE IS ANY QUESTION ABOUT A CONDITION BEING SAFE OR UNSAFE, DO NOT OPERATE
THIS PRODUCT!
HAVE QUESTIONS OR PROBLEMS? CONTACT CUSTOMER SERVICE.
If you experience a problem or need parts for this product, visit our website http://www.buffalotools.com or call our
customer help line at 1-636-532-9888, Monday-Friday, 8 AM - 4 PM Central Time. A copy of the sales receipt is
required.
FOR CONSUMER USE ONLY – NOT FOR PROFESSIONAL USE.
KEEP THIS MANUAL, SALES RECEIPT & APPLICABLE WARRANTY FOR FUTURE REFERENCE
ITEM # HIT125
80A MIG Welder
Assembly & Operating Instructions
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Table of Contents
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Summary of Contents for Buffalo Tools HIT125
- Page 1 ITEM # HIT125 80A MIG Welder Assembly & Operating Instructions READ ALL INSTRUCTIONS AND WARNINGS BEFORE USING THIS PRODUCT. This manual provides important information on proper operation & maintenance. Every effort has been made to ensure the accuracy of this manual. These instructions are not meant to cover every possible condition and situation that may occur.
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Page 2: Recognize Safety Symbols, Words And Labels
RECOGNIZE SAFETY SYMBOLS, WORDS AND LABELS What You Need to Know About Safety Instructions Warning and Important Safety Instructions appearing in this manual are not meant to cover all possible conditions and situations that may occur. Common sense, caution and care must be exercised when operating or cleaning tools and equipment. - Page 3 SAFETY Welding is dangerous, and may cause damage to you and others, so wear protection when cutting. Professional training is needed before operating the machine. l Always wear ANSI-approved eyewear and protective equipment while operating this unit. l The operator must be qualified personnel with a valid "metal welding/cutting (OFC) operations"...
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Page 4: Specifications
HIT125 is a gasless (use flux wire) MIG welder. Specifications ITEM HIT125 Power voltage (v) Frequency (HZ) Max no load voltage output (V) Output current (A) 30-80A Duty cycle 80A@30% Suitable wire dia. (INCH) .030 - .035” Insulation class Protection class... -
Page 5: Working Environment
Assembly CAUTION ! ! ! ! 1. WORKING ENVIRONMENT 1） BEST TO WORK IN DRY PLACES, NOT TOO WET OR RAINY OR FULL OF DUST ETC. 2） KEEP TEMPERATURE BETWEEN 14°F TO 140°F. 2. SAFETY 1） Please keep the machine cool, make sure the fan is working and not blocked. 2）... -
Page 6: Installation
Installation 1. Power requirement AC single phase 120v (110-120V), 60HZ with a 20 amp time delayed fuse or circuit breaker is required. DO NOT OPERATE THIS UNIT if the ACTUAL power source voltage is less than 105 volts AC or greater than 132 volts AC. - Page 7 3.4. Open the machine door using the “L” type six angle wrench, counterclockwise unscrewing the screw drive roller on the wire, and remove the drive roller. 3.5 Based on the wire diameter, select the correct groove using the following table: Wire Diameter Roller Groove .030 inch...
- Page 8 4. Install the wire 4.1 Selecting the wire . Available wire for this machine : (Four inch spools are available.) Wire Type Available MIG wire .023 inch MIG wire .030 inch Flux core wire .030 inch Flux core wire .035 inch NOTE: •...
- Page 9 4.2.5 The welder can use 4 inch spools only. The wing nut controls the tension on the spool. 4.2.6. Setting the wire spool tension: a) Turn the spool of wire with one hand. b) Increase the spool tension by tightening (turn clockwise) the wing nut while turning the spool.
- Page 10 NOTE: Due to inherent variances in flux-cored welding wire, it may be necessary to use a contact tip one size larger than your flux core wire if wire jams occur. 4.2.20. Slide the contact tip over the wire (protruding from the end of the gun). Thread the contact tip into the end of the gun adaptor and tighten securely.
- Page 11 Operation High voltage danger from power source! Consult a qualified electrician for proper installation of receptacle at the power source. This welder must be grounded while in use to protect the operator from electrical shock. If you are not sure if your outlet is properly grounded, have it checked by a qualified electrician. Do not cut off the grounding prong or alter the plug in any way and do not use any adapters between the welder’s power cord and the power source receptacle.
- Page 12 5. Tuning in the wire speed This is one of the most important parts of MIG welder operation and must be done before starting each welding job or whenever any of the following variables are changed: wire diameter, or wire type. EXPOSURE TO A WELDING ARC IS EXTREMELY HARMFUL TO THE EYES AND SKIN! Prolonged exposure to the welding arc can cause blindness and burns.
- Page 13 joint. Moving the torch too fast, too slow, or erratically will prevent proper fusion or create a lumpy, uneven bead. Travel direction is the direction the torch is moved along the weld joint in relation to the weld puddle. The torch is either PUSHED into the weld puddle or PULLED away from the weld puddle.
- Page 14 THE TORCH) is such that the wire, directed more toward the metal above the weld joint is to help prevent the weld puddle from running downward while still allowing slow enough travel speed. A good starting point for angle B is about 30 degrees DOWN from being perpendicular to the work piece VERTICAL POSITION Is easier for many people to Pull the torch from top to bottom.
- Page 15 welds to produce strong joint. The illustrations in Figure 19 show the sequence of laying multiple pass beads into a T fillet joint and a lap fillet joint. 6.5 Spot welding There are three methods of spot welding: Burn-Through, Punch and Fill, and Lap. Each has advantages and disadvantages depending on the specific application as well as personal preference.
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Page 16: Maintenance
weld is made. 6. Make spot welds on the actual work piece at desired locations. Maintenance The welder needs the regular maintenance as following: Periodically clean dust, dirt, grease, etc. from your welder. Every six months, or as necessary, remove the cover panel from the welder and air-blow any dust and dirt that may have accumulated inside the welder. - Page 17 3. Whatever the wire feeder if working, there's First check the trigger of MIG torch, if trigger has a problem, please no wire coming from the MIG torch, even push change a new one; the button of MIG torch If not OK , then check if the Electric board is broken (change board) 4.