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JobSmart 1128762, Assembly & Operating Instructions, Page: 1 / 27

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1128762  

 

Flux-cored 125 Amp 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. 

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? DO NOT RETURN THIS PRODUCT TO THE  
RETAILER - CONTACT CUSTOMER SERVICE. 

 

If you experience a problem or need parts for this product, call our customer support at  

1-888-376-9601. 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.

 

 

 

 

Summary of Contents for 1128762

Page 1: ...ion 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 QUESTIO...

Page 2: ...al Thickness 18 Gauge 3 16 FEATURES Includes Ground Cable With Clamp Welding Gun Brush Hammer KEEP THIS MANUAL SALES RECEIPT APPLICABLE WARRANTY FOR FUTURE REFERENCE READ ALL INSTRUCTIONS AND WARNINGS...

Page 3: ...g in that step READ ALL SAFETY INSTRUCTIONS CAREFULLY before attempting to install operate or service this welder Failure to comply with these instructions could result in personal injury and or prope...

Page 4: ...cord plug in any way Do not attempt to plug the welder into the power source if the ground prong on power cord plug is bent over broken off or missing Do not allow the welder to be connected to the po...

Page 5: ...that can start fires burn skin and damage eyes Do not wear gloves or other clothing that contains oil grease or other flammable substances Do not wear flammable hair preparations Do not weld in an are...

Page 6: ...d steel unless the coating is removed Make certain the area is well ventilated and the operator and all bystanders are wearing air sup plied respirators Do not weld cut or heat lead zinc cad mium merc...

Page 7: ...re use read carefully and understand all warnings cautions instructions and labels Failure to do so could result in serious personal injury property damage or even death IMPORTANT SAFETY INSTRUCTIONS...

Page 8: ...required for cooling See Table 2 Table 2 Duty Cycle Ratings Duty Maximum Required Cycle Welding Resting Rating Time Time 20 2 minutes 8 minutes 40 4 minutes 6 minutes 60 6 minutes 4 minutes 80 8 minut...

Page 9: ...nected to the metal work piece you intend to weld the welder will not have a completed circuit and you will be unable to weld A poor connection at the ground clamp will waste power and heat Scrape awa...

Page 10: ...tch is OFF then connect your welder s power cord to a properly grounded 120 Vac 60 Hz single phase 20 amp power source EXTENSION CORDS For optimum welder performance an exten sion cord should not be u...

Page 11: ...sion adjusting knob and lifting the Drive Tension Adjustor away from the Drive Tension Arm Pull the drive tension arm away from the drive roller 3 If there is wire already installed in the welder roll...

Page 12: ...til you have unspooled a few turns of wire to see if the wire further down on the spool is in usable condition if not discard the spool INSTALL THE WELDING WIRE WARNING Electric shock can kill Always...

Page 13: ...remains 9 Loosen the tension adjusting knob holding the drive tension arm in place and lift the tension arm up off the drive roller 10 Insert the leading end of the wire into the inlet guide tube The...

Page 14: ...hand tighten securely 22 Install the nozzle on the torch assembly For best results coat the inside of the nozzle with anti stick spray or gel 23 Cut off the excess wire that extends past the end of t...

Page 15: ...slow down 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 chan...

Page 16: ...n scrap metal that can be discarded Do not attempt to make any repairs on valuable equipment until you have satisfied yourself that your practice welds are of good appearance and free of slag or gas i...

Page 17: ...rection and Speed A solid weld bead requires that the welding torch be moved steadily and at the right speed along the weld joint Moving the torch too fast too slow or erratically will prevent proper...

Page 18: ...achieve 2 The HORIZONTAL POSITION Figure 15 is next in difficulty level It is performed very much the same as the flat weld except that angle B see HOLDING THE TORCH p 16 is such that the wire and the...

Page 19: ...butt welding thicker materials you will need to prepare the edges of the material to be joined by grinding a bevel on the edge of one or both pieces of the metal being joined When this is done a V is...

Page 20: ...duces a weld with the most finished appearance of the three spot weld meth ods In this method a hole is punched or drilled into the top piece of metal and the arc is directed through the hole to pene...

Page 21: ...thly Always use a contact tip stamped with the same diameter as the wire it will be used with Note Due to inherent variances in flux cored welding wire it may be necessary to use a contact tip one siz...

Page 22: ...unit 6 Remove torch Strain Relief Clamp by removing the four screws 7 Take torch handle halves apart by removing four phillips head screws 8 Remove the hanging hook from the two case halves by careful...

Page 23: ...23 Figure 21 Drive Assembly Figure 22 Torch Assembly...

Page 24: ...24 TABLE 5 TROUBLESHOOTING...

Page 25: ...25 MMIG125 WIRING DIAGRAM...

Page 26: ...Fan Bracket 1 13 1 1 04 01 0456 Main Transformer 1 14 2 05 05 016 Feet 4 15 2 07 36 527 Heat Relay 1 No Part Description Qty 16 1 1 05 02 0168 Control PCB 1 17 2 05 05 106 PCB Holder 1 18 2 07 11 009...

Page 27: ...27 1 888 376 9601...

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