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MIG 400

3

Safety Guidelines

These general safety guides cover both arc welding machines and plasma cutting machines unless 
otherwise noted. The equipment must only be used for the purpose it was designed for. Using it in any 
other way could result in damage or injury and in breach of the safety rules. Only suitably trained and 
competent persons should use the equipment. Operators should respect the safety of other persons.

Prevention against electric shock

The equipment should be installed by a qualified person and in accordance with current standards in 
operation. It is the user’s responsibility to ensure that the equipment is connected to a suitable power 
supply. Consult with your utility supplier if required. If earth grounding of the work piece is required, 
ground it directly with a separate cable. Do not use the equipment with the covers removed. Do not 
touch live electrical parts or parts which are electrically charged. Turn off all equipment when not in use. 
Cables (both primary supply and welding) should be regularly checked for damage and overheating. 
Do not use worn, damaged, under sized or poorly jointed cables. Ensure that you wear the correct 
protective clothing, gloves, head and eye protection. Insulate yourself from work and ground using 
dry insulating mats or covers big enough to prevent any physical contact with the work ground. Never 
touch the electrode if you are in contact with the work ground, or another electrode from a different 
machine. 
Do not wrap cables over your body. Ensure that you take additional safety precautions when you are 
welding in electrically hazardous conditions such as damp environments, wearing wet clothing, and 
metal structures. Try to avoid welding in cramped or restricted positions. Ensure that the equipment 
is well maintained. Repair or replace damaged or defective parts immediately. Carry out any regular 
maintenance in accordance with the manufacturer’s instructions.

Safety against fumes and welding gases

Locate the equipment in a well-ventilated position. Keep your head out of the fumes. Do not breathe 
the fumes. Ensure the welding zone is in a well-ventilated area. If this is not possible, provision should 
be made for suitable fume extraction. If ventilation is poor, wear an approved respirator. Read and 
understand the Material Safety Data Sheets (MSDS’s) and the manufacturer’s instructions for metals, 
consumable, coatings, cleaners, and de-greasers. Do not weld in locations near any de-greasing, 
cleaning, or spraying operations. Be aware that heat and rays of the arc can react with vapours to form 
highly toxic and irritating gases. Do not weld on coated metals, unless the coating is removed from the 
weld area, the area is well ventilated, and while wearing an air-supplied respirator. The coatings on many 
metals can give off toxic fumes if welded.

Prevention against burns and radiation

Arc rays from the welding process produce intense, visible and invisible (ultraviolet and infrared) rays 
that can burn eyes and skin. Wear an approved welding helmet fitted with a proper shade of filter lens 
to protect your face and eyes when welding or watching. Wear approved safety glasses with side shields 
under your helmet. Never use broken or faulty welding helmets. Always ensure there are adequate 
protective screens or barriers to protect others from flash, glare and sparks from the welding area. Ensure 
that there are adequate warnings that welding or cutting is taking place.

Summary of Contents for MIG400

Page 1: ...www newarc co uk Newcastle UponTyne Tel 0191 295 0111 sales newarc co uk Powered by Operational Manual Newarc MIG400 NA9910208...

Page 2: ...ower source for MIG Brand name or trade mark Newarc Type designation etc MIG 400 Manufacturer or his authorised representative established within the EEA Name address telephone no Newarc Newcastle upo...

Page 3: ...such as damp environments wearing wet clothing and metal structures Try to avoid welding in cramped or restricted positions Ensure that the equipment is well maintained Repair or replace damaged or d...

Page 4: ...ear the cutting welding area Remove all ammable and combustible materials from the cutting welding zone and surrounding areas Do not cut weld fuel and lubricant containers even if empty These must be...

Page 5: ...uipment that has reached its end of life must be collected separately and returned to an environmentally compatible recycling facility Handling of compressed gas cylinders and regulators All cylinders...

Page 6: ...ation 12 3 Operation 13 3 1 Start up Display 14 3 2 Standard Display Functions 14 3 3 Standard Display Functions MIG 15 3 4 Standard Display Functions User Menu 16 3 5 Standard Display Functions Error...

Page 7: ...n authorised Newarc dealer or visit the Newarc website at www newarc co uk The specifications presented in this manual are subject to change without prior notice Important notes Items in the manual th...

Page 8: ...welding arc much faster than conventional machines resulting in a more stable and controllable weld pool Due to the high efficiency and power factor these units provide energy and cost saving solutio...

Page 9: ...3 Technical Specifications Newarc 380 480 Volts 3 Phase 50 60Hz Power voltage V 24A 18 5 KVA 32A slow blow or type C MCB Variable 4 x 4 0mm flexible cable 0 95 400 amps Power Factor 40V 2 40V Infinit...

Page 10: ...lso gives an indication when the machine is over temperature OT or the optional cooling unit is turned off CU 5 Inductance control Operates in MIG mode only This control alters the response time of th...

Page 11: ...e feed unit There is no switch for remote operation plugging an external unit into the socket automatically selects remote operation 8 veweldterminal Main welding power output connector positive polar...

Page 12: ...apability for the machine Make sure that any extension cables used are of sufficient current carrying capacity Make sure that the mains plug and socket if fitted are in good condition and are of the c...

Page 13: ...ng Cooling unit control Improved remote control Configuration Front Panel is factory calibrated and in most cases doesn t need additional adjusting If any problem occurs please contact service for adv...

Page 14: ...N Remote control detected 6 8 8 8 8 8 8 8 8 Top right decimal point flashing Output voltage detected when output volt age 5V and no remote connected 7 8 8 8 8 8 8 8 8 Bottom right decimal point flashi...

Page 15: ...med on display for better recognising read value of voltage and current 4 2 6 Standard display functions MIG Mode Actual Current and Voltage When welding Set Voltage dur Welding Time Duration Long pre...

Page 16: ...ON time hours Shows time how long device was ON T 8 8 8 8 2 6 Total ON time minutes C U 8 8 8 o F F Cooling Unit Error Register Cooling unit disconnected or not active Signal from cooling unit is igno...

Page 17: ...5s Output current flow was noticed and machine was switched off ERROR 5 Microprocessors restarts This is an errors counter visible during configuration mode in Errors Register E r 8 6 C U ERROR 6 CU...

Page 18: ...overheated normally by exceeding its Duty Cycle and the power stages of the machine have been shut down In this case leave the machine switched on until it has cooled down if you turn the machine off...

Page 19: ...ease consult the fault finding and maintenance section of the WFU instruction manual Any welding problems not covered above must be brought to the attention of a qualified Welding Engineer if the prob...

Page 20: ...on of the welding cable earth clamp and welding connectors for damage and any sign of over heating Check the gas hose and regulator for leaks remember that air leaks can result in weld porosity Check...

Page 21: ...e stated conditions of use are that considered normal industrial practice and are not exhaustive Each machine is identified with a unique serial number and accompanied with the guarantee Newarc reserv...

Page 22: ...MIG 400 22 7 Electrical Diagram MIG400 Power Source 15 SECTION 6 ELECTRICAL DIAGRAMS 6 1 System Diagram...

Page 23: ...MIG 400 23 MIG400 Power Source 16 SECTION 7 PARTS BREAKDOWN 7 1 Component Locations 4 1 2 6 3 5 12 13 14 7 8 9 10 11 8 Parts...

Page 24: ...MIG 400 24 MIG400 Power Source 17 SECTION 7 PARTS BREAKDOWN 7 1 Component Locations 15 16 17 24 20 22 18 19 21 23 27 26 25...

Page 25: ...s body NAM00379 Soft start resistor assembly Soft start relay NAM70026 Fuse 3 15A slow blow 32 x 6 3mm ceramic body NAM00020A NAM90765 Diode bridge NAM60057 Control PCB NAM90744 R17 R4000 Display PCB...

Page 26: ...MIG 400 26 Notes...

Page 27: ...MIG 400 27...

Page 28: ...MIG 400 28 www newarc co uk Powered by Unit 1 Whitehouse Industrial Estate Whitehouse Road Newcastle upon Tyne NE15 6LN Tel 44 0 191 295 0111 Email sales newarc co uk www newarc co uk...

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