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Read carefully and understand RULES FOR SAFE OPERATION and instructions before
operating. Failure to follow the safety rules and other basic safety precautions may
result in serious personal injury.

ARC 70

Item# 164

620

OPERATOR’S MANUAL

Содержание ARC 70 164620

Страница 1: ...nd understand RULES FOR SAFE OPERATION and instructions before operating Failure to follow the safety rules and other basic safety precautions may result in serious personal injury ARC 70 Item 164620 OPERATOR S MANUAL ...

Страница 2: ...ertain applications only Northern Tool Equipment strongly recommends that this machine not be modiﬁed and or used for any application other than that for which it was designed If you have questions relative to a particular application DO NOT use the machine before you contact Northern Tool Equipment to determine if it can be performed on the product Before using this welding unit please read the f...

Страница 3: ...equires a 20 amp time delayed fuse or circuit breaker Out put is 50 amps at 20 duty cycle OCV 42 VDC Also includes load and thermal protection Designed to use for mild steel or alloys in DIY applications Welds up to 1 8 mild steel Specifications and Dimension MODEL SPECIFICATION Power supply 1ph 115V 60HZ No load voltage OCV 42V Output Range 50 70A Duty cycle 20 Suggested electrodes E6011 E6013 E7...

Страница 4: ...h amperage for an extended time the duty cycle can be exceeded the overload light will come on orange the machine will stop working until the temperature decreases to the acceptable operating temperature range If the overload light comes on it will take about 15 minutes for the unit to cool down and be ready to use Ground cable and clamp The ground cable and clamp is attached to the work piece to ...

Страница 5: ...re 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 holder ground cable clamp or electrode is wet Do not immerse them in water These components and the welder must be completely dry before attempting to use them Follow the instructions in this manual Keep welder in the off position when not in use Connect groun...

Страница 6: ...injury or death Do not breathe in fumes emitted by the welding process Make sure your breathing air is clean and safe Work only in a well ventilated area or use a ventilation device to remove welding fumes from the environment where you will be working Do not weld on coated materials galvanized cadmium plated or containing zinc mercury or barium They will emit harmful fumes that are dangerous to b...

Страница 7: ...ters 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 To prevent any unintended arcs keep electrode away from grounded materials until you are ready to weld Hot Materials Welded materials are hot and can cause severe burns if handled improperly Do not touch welded m...

Страница 8: ...High voltage danger from power source Consult a qualified electrician for proper installation of receptacle This welder must be grounded while in use to protect the operator from electrical shock Do not remove grounding prong or alter the plug in any way Do not use any adapters between the welder s power cord and the power source receptacle Make sure the POWER switch is OFF when connecting your we...

Страница 9: ...rod and the grounded metal melts the electrode and the flux The most popular electrodes are E6011 60 000 PSI tensile strength deep penetrating applications E6013 60 000 PSI tensile strength used for poor fit up applications E7014 70 000 PSI tensile strength used for high deposition and fast travel speeds with light penetration E7018AC 70 000 PSI tensile strength Used for out of position and tackin...

Страница 10: ...eeded in the welding process Heavier and thicker metals require more voltage amperage whereas lighter and thinner metals require less voltage amperage 2 Welding techniques The best way to teach yourself how to weld is with short periods of practice at regular intervals All practice welds should be done on scrap metal that can be discarded Do not attempt to make any repairs on valuable equipment un...

Страница 11: ...ss the most commonly used arc welding beads The stringer bead Formed by traveling with the torch in a straight line while keeping the wire and nozzle centered over the weld joint The weave bead Used when you want to deposit metal over a wider space than would be possible with a stringer bead It is made by weaving from side to side while moving with the torch It is best to hesitate momentarily at e...

Страница 12: ...ts air from reaching the molten metal and creating an undesirable chemical reaction The burning coating however forms slag The slag formation appears as an accumulation of dirty metal scale on the finished weld Slag should be removed using a chipping hammer CHIPPING THE SLAG FROM A WELD JOINT CAUSES SMALL CHIPS OF SLAG TO FLY THROUGH THE AIR Slag flying through the air can cause eye injury or inju...

Страница 13: ...s not weld properly 1 Incorrect power input 2 Inadequate current at output 3 Poor connection of output cable 4 Dirty surfaces 5 Wrong welding wire 1 Check the power source 2 Check for proper grounding to the work piece 3 Check output connection 4 Clean surfaces 5 Use correct wire Welder blows circuit breaker or fuse Wrong circuit breaker or fuse in power supply Check the circuit breaker or fuse in...

Страница 14: ...Northern Industrial Welder ARC 70 Operating Instructions and Parts Manual 12 Main Circuit Chart ...

Страница 15: ...Northern Industrial Welder ARC 70 Operating Instructions and Parts Manual 13 Illustrated Parts List ...

Страница 16: ... holder 2 05 05 201 3 3 Front panel 1 05 81 01 1 4 Foot 2 05 05 016 4 5 Bottom 1 05 81 02 1 6 Back panel 1 05 81 04 1 7 Power cord with plug 2 03 05 140 1 8 Handle 2 05 08 027 1 1 9 Enclosure 1 05 81 03 1 10 Transformer 1 05 80 17 1 11 Thermal relay 2 07 36 410 1 12 LBD 1 05 81 07 1 13 Setting switch 2 07 80 031 1 14 Main switch 2 07 80 221 1 15 Electrode holder 1 05 80 06 1 ...

Страница 17: ... days of the failure so as to provide instructions on how to proceed with the repair of your welder and warranty claim processing Warranty period begins at the time the welder is purchased from Northern Tool Equipment Warranty Periods Limited Warranty is divided into four categories No warranty 6 months 1 year 2 year No Warranty Normal wear items MIG gun parts contact tips nozzle adapter MIG gun l...

Страница 18: ...Northern Tool Equipment Co 2800 Southcross Drive West PO Box 1219 Burnsville MN 55337 ...

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