Northern Industrial Tools ST80i User Manual

67 L 23(5$7,1* 0$18$/

Northern Industrial Welding
Operating Instructions and Parts Manual	ST80i

Please read and save these instructions. Read through this owner’s manual carefully before using product. Protect yourself and others by observing all safety information, warnings, and cautions. Failure to comply with instructions could result in personal injury and/or damage to product or property. Please retain instructions for future reference.

Welding

Description

ST80i portable DC inverter arc welder AC single phase 120V (110120V), 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 available

Unpacking

1.1 Remove cartons, bags or

Styrofoam containing the welder and accessories. 1.2 Check the contents with the packing list below.

	ITEM	QTY.
	Portable Arc Welder	1 unit
	Welding cable with electrode holder	1pc
	Grounding cable with earth clamp	1pc
	Operator’s Manual	1set
	Sample electrodes	1 bag
	Carry strap	1pc

1.3 After unpacking unit, inspect carefully for any damage that may have occurred during transit. Check for loose, missing, or damaged parts. Shipping damage claim must be filed with carrier.

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Northern Industrial Welding	ST80i
Operating Instructions and Parts Manual

Specifications and Dimension

	MODEL				ST80i
	Power supply (v)		1ph-120V-60HZ
	No-load voltage (v)		75V
	Output Range (A)		20-75A	90A Peak
	Duty cycle (%)		20% @75A
	Suggested electrode		E6013,E7014,E7018, Stainless steel
	Electrode Diameter (Inch)		1/16”, 5/64”, 3/32” 1.6mm 2.0mm 2.4mm
	Dimensions		300x120x240MM / 12x5x9 inches
	Length x Width x Height
	Weight (Ibs)		4.5Kgs	9.9Lbs
	Know your Welder	Power Indicating light			Thermal protection
					Indicating light
	Strap				Current adjustment
	Welding cable and				Output“-”connector

electrode holder

Output“+”connector

Ground Cable

and clamp

Indicating Light Power, Thermal Protection

There are two indicating lights : power indicator and thermal indicator. When the machine is turned on, the power indicator will be on to show it. When the thermal indictor is on, it shows the 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 machine will turn on automatically.

Current Adjustment

Current adjustment is on the front panel of machine. It is an infinite current output adjustment

Output “+“Connector

This is the connector for welding cable most often when STICK welding. When this machine is used for TIG welding, this connector is for the grounding cable.

Ground Cable and Clamp

The ground cable and clamp is attached to the work piece to complete the flow of current needed to weld.

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MAX/MIN

Switch

Thermal Indic

Ground Ca

Northern Industrial Welding	ST80i
Operating Instructions and Parts Manual

Welding Cable and Electrode Holder

One end of cable is connected to output connectors of the machine. The electrode 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 torch

Power Cord

The power cord connects the welder to the 110-120v volt power supply. Plug the 15 amp plug into a 115 volt/20 amp receptable to supply power to the welder

Wiring Diagrams

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Northern Industrial Welding	ST80i
Operating Instructions and Parts Manual

General Safety Information

1.1Your Welding Environment

-Keep the environment you will be welding in free from flammable materials.

-Always keep a fire extinguisher accessible to your welding environment.

-Always have a qualified person install and operate this equipment. -Make sure the area is clean, dry and ventilated. Do not operate the welder in humid, wet or poorly ventilated areas.

-Always have your welder maintained by a qualified technician in accordance with local, state and national codes.

-Always be aware of your work environment. Be sure to keep other people, especially children, away from you while welding.

-Keep harmful arc rays shielded from the view of others.

-Mount the welder on a secure bench or cart that will keep the welder secure and prevent it from tipping over or falling.

1.2Your Welder’s Condition

-Check all cables, power cord and welding cable to be sure the insulation is not damaged. Always replace or repair damaged components before using the welder. -Check all components to ensure they are clean and in good operating condition before use.

1.3 Use of Your Welder

Do not operate the welder if the 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 manual. -Keep welder in the off position when not in use.

-Connect ground lead as close to the area being welded as possible to ensure a good ground.

-Do not allow any body part to come in contact with the electrode if you are in contact with the material being welded, ground or electrode from another welder.

-Do not weld if you are in an awkward position. Always have a secure stance while welding to prevent accidents. Wear a safety harness if working above ground.

-Do not drape cables over or around your body.

-Wear a full coverage helmet with shade (see ANSI Z87.1 safety standard) and safety glasses while welding.

-Wear proper gloves and protective clothing to prevent your skin from being exposed to hot metals, UV and IR rays.

-Do not overuse or overheat your welder. Allow proper cooling time between duty cycles.

-Always use this welder in the rated duty cycle to prevent excessive heat and failure.

1.4 Specific Areas of Danger, Caution or Warning

Electrical Shock

Electric arc welders can produce a shock that can cause injury or

death. Touching electrically live parts can cause fatal shocks and severe burns. While welding, all metal components connected to the unit are electrically hot. Poor ground

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	Northern Industrial Welding						ST80i
	Operating Instructions and Parts Manual
	connections are a hazard, so secure			toxic. Refer to the material safety
	the ground lead before welding.			data sheet for the manufacturer’s
	-Wear dry protective apparel: coat,			instructions.
	shirt, gloves and insulated footwear.			-Do not weld near materials that will
	-Insulate yourself from the work piece.			emit toxic fumes when heated.
	Avoid contacting the work piece or			Vapors from cleaners, sprays and
	ground.			degreasers can be highly toxic when
	- Do not attempt to repair or maintain			heated.
	the welder while the power is on.				UV and IR Arc Rays
	-Inspect all cables and cords for any
	exposed wire and replace
					The welding arc
	immediately.
					produces ultraviolet (UV)
	-Use recommended replacement
					and infrared (IR) rays
	cables and cords.
				that can cause injury to your eyes
	-Always attach ground clamp to the
				and skin. Do not look at the welding
	work piece work table as close to the
				arc without proper eye protection.
	weld area as possible.
				-Always use a helmet that covers
	-Do not touch the electrode and the
				your full face from the neck to top of
	ground or grounded work piece at the
				head and to the back of each ear.
	same time.
				-Use a lens that meets ANSI
	-Do not use a welder to thaw frozen
				standards and safety glasses. For
	pipes.
				welders under 160 Amps output, use
		Fumes and Gases
				a shade 10 lens; for above 160 Amps,
				use a shade 12. Refer to the ANSI
		-Fumes emitted from the		standard Z87.1 for more information.
	welding process displace			-Cover all bare skin areas exposed to
	clean air and can result in			the arc with protective clothing and
	injury or death.			shoes. Flame-retardant cloth or
	-Do not breathe in fumes emitted by			leather shirts, coats, pants or
	the welding process. Make sure your			coveralls are available for protection.
	breathing air is clean and safe.			-Use screens or other barriers to
	-Work only in a well-ventilated area or			protect other people from the arc rays
	use a ventilation device to remove			emitted from your welding.
	welding fumes from the environment			-Warn people in your welding area
	where you will be working.			when you are going to strike an arc
	-Do not weld on coated materials			so they can protect themselves.
	(galvanized, cadmium plated or			Fire Hazards
	containing zinc, mercury or barium).
	They will emit harmful fumes that are
				Do not weld on containers
	dangerous to breathe. If necessary
				or pipes that contain or
	use a ventilator, respirator with air
				have had flammable,
	supply or remove the coating from the
				gaseous or liquid			combustibles in
	material in the weld area.
				them. Welding creates sparks and

	-The fumes emitted from some	heat that can ignite flammable and
	metals when heated are extremely
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