ESAB Origo Mig 320 User manual

GB
Valid for serial no. 626-xxx-xxxx, 121-xxx-xxxx0463 274 001 GB 20120822
Origo™
Mig 320
Instruction manual

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Rights reserved to alter specifications without notice.
1 SAFETY 4...........................................................
2 INTRODUCTION 6...................................................
2.1 Equipment 6................................................................
3 TECHNICAL DATA 7.................................................
4 INSTALLATION 7....................................................
4.1 Location 7..................................................................
4.2 Assembly of components 8...................................................
4.3 Assembly of stabilizer 9......................................................
4.4 Electrical installation 9.......................................................
4.5 Mains power supply 10........................................................
5 OPERATION 11.......................................................
5.1 Connection and control devices 11.............................................
5.2 Overheating protection 11.....................................................
5.3 Inductance connection 12.....................................................
6 MAINTENANCE 12....................................................
6.1 Inspection and cleaning 12....................................................
7 FAULT TRACING 13..................................................
8 ORDERING OF SPARE PARTS 13......................................
DIAGRAM 14............................................................
ORDER NUMBER 18.....................................................
ACCESSORIES 19.......................................................

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1 SAFETY
Users of ESAB equipment have the ultimate responsibility for ensuring that anyone who works on or
near the equipment observes all the relevant safety precautions. Safety precautions must meet the
requirements that apply to this type of equipment. The following recommendations should be ob
served in addition to the standard regulations that apply to the workplace.
All work must be carried out by trained personnel well-acquainted with the operation of the equip
ment. Incorrect operation of the equipment may lead to hazardous situations which can result in in
jury to the operator and damage to the equipment.
1. Anyone who uses the equipment must be familiar with:
Sits operation
Slocation of emergency stops
Sits function
Srelevant safety precautions
Swelding and cutting
2. The operator must ensure that:
Sno unauthorised person is stationed within the working area of the equipment when it is
started up.
Sno-one is unprotected when the arc is struck
3. The workplace must:
Sbe suitable for the purpose
Sbe free from drafts
4. Personal safety equipment
SAlways wear recommended personal safety equipment, such as safety glasses, flame-proof
clothing, safety gloves.
SDo not wear loose-fitting items, such as scarves, bracelets, rings, etc., which could become
trapped or cause burns.
5. General precautions
SMake sure the return cable is connected securely.
SWork on high voltage equipment may only be carried out by a qualified electrician.
SAppropriate fire extinquishing equipment must be clearly marked and close at hand.
SLubrication and maintenance must not be carried out on the equipment during operation.
WARNING
Do not use the power source for thawing frozen pipes.
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WARNING
Read and understand the instruction manual before installing or operating.
Arc welding and cutting can be injurious to yourself and others. Take precautions when welding and
cutting. Ask for your employer's safety practices which should be based on manufacturers' hazard
data.
ELECTRIC SHOCK - Can kill
SInstall and earth the unit in accordance with applicable standards.
SDo not touch live electrical parts or electrodes with bare skin, wet gloves or wet clothing.
SInsulate yourself from earth and the workpiece.
SEnsure your working stance is safe.
FUMES AND GASES - Can be dangerous to health
SKeep your head out of the fumes.
SUse ventilation, extraction at the arc, or both, to take fumes and gases away from your breathing zone
and the general area.
ARC RAYS - Can injure eyes and burn skin.
SProtect your eyes and body. Use the correct welding screen and filter lens and wear protective
clothing.
SProtect bystanders with suitable screens or curtains.
FIRE HAZARD
SSparks (spatter) can cause fire. Make sure therefore that there are no inflammable materials nearby.
NOISE - Excessive noise can damage hearing
SProtect your ears. Use earmuffs or other hearing protection.
SWarn bystanders of the risk.
MALFUNCTION - Call for expert assistance in the event of malfunction.
PROTECT YOURSELF AND OTHERS!
CAUTION
Class A equipment is not intended for use in residential locations where
the electrical power is provided by the public low-voltage supply system.
There may be potential difficulties in ensuring electromagnetic
compatibility of class A equipment in those locations, due to conducted
as well as radiated disturbances.
CAUTION
Read and understand the instruction manual before
installing or operating.
CAUTION
This product is solely intended for arc welding.
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Dispose of electronic equipment at the recycling facility!
In observance of European Directive 2002/96/EC on Waste Electrical and Electronic
Equipment and its implementation in accordance with national law, electrical and/or
electronic equipment that has reached the end of its life must be disposed of at a
recycling facility.
As the person responsible for the equipment, it is your responsibility to obtain
information on approved collection stations.
For further information contact the nearest ESAB dealer.
ESAB can provide you with all necessary welding protection and accessories.
2 INTRODUCTION
The Mig 320 is a step switched power source designed for MIG/MAG−welding
together with wire feed units Feed 302 and Feed 304.
The power units are fan−cooled and equipped with thermal overload protection.
The machine is fitted with an instrument that displays current and voltage. It
incorporates a hold function and can be calibrated.
The power source comes in different variants, see page 18.
ESAB's accessories for the product can be found on page 19.
2.1 Equipment
The power source is supplied with:
SReturn cable, 3m, with return clamp
SShelf for gas cylinder
SGuide pin for wire feed unit
SInstruction manual
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3 TECHNICAL DATA
Mig 320
Voltage 230/400-415/500V 3∼50 Hz 230/440-460 3∼60Hz
Permissible load
at100 % duty cycle 195 A/24 V
at 60 % duty cycle 250 A/27 V
at 30 % duty cycle 320 A/30 V
Setting range (DC) 40A/16V-320A/30V
Open circuit voltage 16-40 V
Open circuit power 200 W
Efficiency at max current 75%
Power factor at max current 0.94
Control voltage 42 V, 50/60 Hz
Dimensions LxWxH 840 x 425 x 830
Weight 111 kg
Operating temperature -10 to +40°C
Transportation temperature -20 to +55°C
Enclosure class IP 23
Application classification
Duty cycle
The duty cycle refers to the time as a percentage of a ten-minute period that you can weld or cut at
a certain load without overloading. The duty cycle is valid for 40°C.
Enclosure class
The IP code indicates the enclosure class, i. e. the degree of protection against penetration by solid
objects or water. Equipment marked IP23 is designed for indoor and outdoor use.
Application class
The symbol indicates that the power source is designed for use in areas with increased
electrical hazard.
4 INSTALLATION
The installation must be carried out by a professional.
CAUTION
This product is intended for industrial use. In a domestic environment this product may
cause radio interference. It is the user's responsibility to take adequate precautions.
4.1 Location
Position the welding power source in such way that its cooling air inlets and outlets
are not obstructed.
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4.2 Assembly of components
WARNING
During transport, the rear wheels of the power source are in their forward position.
Before use, place the wheels in their rear position.
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4.3 Assembly of stabilizer
Assemble the stabilizer if a counter balance is to be installed on machine. The stabilizer
is an accessory. The order number can be found on page 19.
Attention! Use of a counter balance without stabilizer may cause the machine to tip
over.
4.4 Electrical installation
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4.5 Mains power supply
Check that the unit is connected to the correct mains power
supply voltage, and that it is protected by the correct fuse size. A
protective earth connection must be made, in accordance with
regulations.
Rating plate with supply connection data
Recommended fuse sizes and minimum cable areas
Mig 320 3∼ 50 Hz 3∼ 50/60 Hz 3∼ 50 Hz 3∼ 60 Hz 3∼ 60 Hz
Voltage V 230 400/415 500 230 440/460
Current A
at100% duty cycle 16 9 7 16 8
at 60% duty cycle 23 14 10 23 12
at 30% duty cycle 35 20 16 34 18
Cable area mm24 x 4 4 x 2,5 4 x 2,5 4 x 4 4 x 2,5
Fuse, slow A 20 16 16 20 16
NB: The mains cable areas and fuse sizes as shown above are in accordance with Swedish
regulations. They may not be applicable in other countries: make sure that the cable area and fuse
sizes comply with the relevant national regulations.
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5 OPERATION
General safety regulations for handling the equipment can be found on
page 4. Read through before you start using the equipment!
WARNING
Secure the equipment - particularly if the
ground is uneven or sloping.
5.1 Connection and control devices
1Mains supply switch 7Connection for return cable (-), high
inductance
2Switch, precise control 8Connection for return cable (-), low
inductance
3Switch, coarse control 9Connection for welding current cable (+)
4Indicator lamp, power supply ON 10 Connection for control cable for wire feeder
5Orange indicator lamp, overheating 11 MCB
6Digital instrument V/A
5.2 Overheating protection
A thermal overload cutout protects against overheating. The cutout resets automatically
when the unit has cooled.
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5.3 Inductance connection
Higher inductance produces a more flowing weld and fewer spatters. Lower inductance
produces a harsher sound and a stable, concentrated arc.
6 MAINTENANCE
Regular maintenance is important for safe, reliable operation.
Only those persons who have appropriate electrical knowledge (authorized
personnel) may remove the safety plates.
CAUTION
All guarantee undertakings from the supplier cease to apply if the customer attempts any
work to rectify any faults in the product during the guarantee period.
6.1 Inspection and cleaning
Power source
SCheck regularly that the power source is free from dirt.
SThe power source should be regularly blown clean using dry compressed air at
reduced pressure. This must be done more frequently in dirty environments.
Otherwise the air inlet/outlet may become blocked and cause overheating. To
avoid this you can use an air filter.
The air filter is an accessory. Ordering number can be found on page 19.
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7 FAULT TRACING
Try these recommended checks and inspections before sending for an authorised
service technican.
Type of fault Actions
No arc SCheck that the mains power supply switch is turned on.
SCheck that the welding current supply and return cables are
correctly connected.
SCheck that correct current value is set.
SCheck to see whether the MCB has tripped.
Welding current is interrupted
during welding
SCheck whether the thermal overload trip has operated
(indicated by the orange lamp on the front).
SCheck the main power supply fuses.
Thermal overload trips
operate frequently
SCheck to see whether the air filters are clogged.
SMake sure that you are not exceeding the rated data for the
power source (i.e. that the unit is not being overloaded).
Poor welding performance SCheck that the welding current supply and return cables are
correctly connected.
SCheck that the correct current value is set.
SCheck that the correct welding wires are being used.
SCheck the main power supply fuses.
8 ORDERING OF SPARE PARTS
Repair and electrical work should be performed by an authorised ESAB service
technician. Use only ESAB original spare and wear parts.
Mig 320 is designed and tested in accordance with the International and European
standards EN 60974-1 and EN 60974-10. It is the obligation of the service unit which
has carried out the service or repair work to make sure that the product still conforms
to the said standard.
Spare parts may be ordered through your nearest ESAB dealer, see the last page of
this publication.
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Diagram
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Mig 320, 400 V

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Mig 320, 230-500V

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Mig 320
© ESAB AB 2011
Order number
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.
Ordering no. Type Notes
0349 312 600 Origo™ Mig 320 230/400-415/500 V, 3~50Hz , 230/400-460 V,
3~60Hz with digital instrument
0349 300 522 Origo™ Mig 320 Spare parts list
Technical documentation is available on the Internet at www.esab.com

Mig 320
© ESAB AB 2011
Accessories
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Feeder with capsulated bobbin
OrigoTM Feed 302 .......................
OrigoTM Feed 304 .......................
0459 116 781
0459 116 882
Digital meter ............................ 0349 302 598
Transformer kit for CO2heater ........... 0349 302 250
Filter ................................... 0349 302 599
Cable holders ........................... 0349 303 362

Mig 320
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Connection sets
Connection set 1,7m ......................
Connection set 10m ......................
Connection set 15m ......................
Connection set 25m ......................
Connection set 35m ......................
0469 836 880
0469 836 881
0469 836 882
0469 836 883
0469 836 884
Stabilizer ............................... 0349 303 475