Northern Industrial ST 80 i Operating Manual Download Page 7

Northern Industrial Welding 

 

 

 

Operating Instructions and Parts Manual 

ST80i 

explosive materials.  
-Do not operate any electric arc 
welder in areas where flammable or 
explosive materials are present. 
-Remove all flammable materials 
within 35 feet of the welding arc. If 
removal is not possible, tightly cover 
them with fireproof covers. 
-Take precautions to ensure that 
flying sparks do not cause fires or 
explosions in hidden areas, cracks or 
areas you cannot see. 
-Keep a fire extinguisher close in the 
case of fire. 
-Wear garments that are oil-free with 
no pockets or cuffs that will collect 
sparks. 
-Do not have on your person any 
items that are combustible, such as 
lighters or matches. 
-Keep work lead connected as close 
to the weld area as possible to 
prevent any unknown, unintended 
paths of electrical current from 
causing electrical shock and fire 
hazards. 

Hot Materials 

 

Welded materials are hot 
and can cause severe 
burns if handled   

improperly. 
-Do not touch welded materials with 
bare hands.  
-Do not touch electrode holder after 
welding until it has had time to cool 
down. 

 

Sparks/Flying Debris 

 

Welding creates hot 
sparks that can cause 
injury. Chipping slag off 

welds creates flying debris. 
-Wear protective apparel at all times: 
ANSI-approved safety glasses or 

shield, welder’s hat and ear plugs to 
keep sparks out of ears and hair. 

Electromagnetic Field 

 

-Electromagnetic fields 
can interfere with various 
electrical and electronic 

devices such as pacemakers. 
-Consult your doctor before using any 
electric arc welder or cutting device 
-Keep people with pacemakers away 
from your welding area when welding. 
-Do not wrap cable around your body 
while welding. 
-Wrap welding cable and ground 
cable together whenever possible. 
-Keep welding cable and ground 
cables on the same side of your body. 

Shielding Gas Cylinders 
Can Explode 

 

 

High pressure cylinders can explode 
if damaged, so treat them carefully. 
-Never expose cylinders to high heat, 
sparks, open flames, mechanical 
shocks or arcs. 
-Do not touch cylinder with welding 
cable. 
-Do not weld on the cylinder. 
-Always secure cylinder upright to a 
cart or stationary object. 
-Keep cylinders away from welding or 
electrical circuits. 
-Use the proper regulators, gas hose 
and fittings for the specific application. 
-Do not look into the valve when 
opening it. 
-Use protective cylinder cap 
whenever possible. 

1.5 Proper Care, Maintenance And 
Repair 

 

Summary of Contents for ST 80 i

Page 1: ...67 L 23 5 7 1 0 18...

Page 2: ...10 120V 60HZ 20 amp time delayed fuse or circuit breaker is recommended Overload protection An ideal stick unit to weld all sorts of carbon steel stainless steel and DIY jobs Tig torch option availabl...

Page 3: ...he machine is overloaded working and the internal temperature is too high The machine will turn off automatically but the fan will still be working When the internal temperature is decreased the machi...

Page 4: ...ode is clamped in the electrode holder for welding Output Connector This is the connector for grounding cable when STICK welding When this machine is used for TIG welding this connector is for the TIG...

Page 5: ...output cable electrode or any part of the system is wet Do not immerse them in water These components and the welder must be completely dry before attempting to use it Follow the instructions in this...

Page 6: ...tilator respirator with air supply or remove the coating from the material in the weld area The fumes emitted from some metals when heated are extremely toxic Refer to the material safety data sheet f...

Page 7: ...g Debris Welding creates hot sparks that can cause injury Chipping slag off welds creates flying debris Wear protective apparel at all times ANSI approved safety glasses or shield welder s hat and ear...

Page 8: ...when connecting your welder s power cord to a properly grounded 120Vac 60Hz single phase 20 amp power source 2 Extension cord During normal use an extension cord is not necessary It is strongly recom...

Page 9: ...trength Used for out of position and tacking 6 Selecting the proper electrode There is no golden rule that determine the exact rod or heat setting required for every situation The type and thickness o...

Page 10: ...t your practice welds are of good appearance and free of slag or gas inclusions 2 1 Holding the electrode The best way to grip the electrode holder is the way that feels most comfortable to you To Pos...

Page 11: ...tion 2 4 Welding position Flat position is the easiest of the welding positions and is most commonly used It is best if you can weld in the flat position if at all possible as good results are easier...

Page 12: ...hands or exposed portions of the body Wear goggles or eye glasses with side shields and protect the hands and other exposed parts of the body with protective garments or if possible work with a shiel...

Page 13: ...or is on Using over the rated duty cycle Will automatically recover when the temperature lowers 2 The adjustment knob on the front panel didn t work Potentiometer broken current regulation Replace the...

Page 14: ...uirement Socket loosen 5 Electrode Holder and Cable getting hot polar sockets becoming hot High resistance between the electrode holder and the cable Remove the oxide coating and tighten it Resume pow...

Page 15: ...return it to the place of purchase and it will be replaced free of charge Incidental or consequential damages are excluded from this warranty Repair Parts List Reference number Description Part number...

Page 16: ...nsformer fixed board 1 1 02 01 0750 1 18 Fan wiring harness ROHS 1 2 07 02 0614 1 19 Plastic back panel 2 05 05 702 1 20 Powerline with plug RoHS 2 03 05 133 1 21 Wave switch ROHS 2 07 80 213 1 Other...

Page 17: ...0 3000 Fax 617 770 0700 www nfpa org OSHA Standard 29 CFR Part 1910 Subpart Q WELDING CUTTING AND BRAZING obtainable from your state OSHA office or from U S Dept of Labor OSHA Office of Public Affairs...

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