TradeWeld MIG 250M User manual

1

CONTENTS
Contents & Explanation of Symbols ······················································································· 2
Safety Warning & Duty Cycle Explained ················································································· 3
Machine Description ············································································································ 4
Technical Specification ········································································································ 5
Accessories & Consumables ································································································ 6
Installation & Operation of MIG & MMA & TIG ·········································································· 7
Front Panel layout ··············································································································· 8
Knob Functions ··················································································································· 9
Typical MIG Process settings ································································································ 10
Operating Precautions ········································································································· 11
Maintenance ······················································································································· 12
Daily checking ···················································································································· 13
Troubleshooting & Fault Finding ··························································································· 14
Explosion Diagrams & Part List ····························································································· 15
Warranty & Owners Records ································································································· 16#
EXPLANATION OF SYMBOLS
The rating plate on your machine and/or the manual may show certain symbols.
These represent important information about the product or instructions on its use.
Conforms to relevant safety standards.
To reduce t h e r isk of injury, user must read instruction manual.
Do not dispose of old appliances with domestic rubbish.
Wear hearing protection.
Wear eye protection.
Wear respiratory protection.
Attention.
Caution

SAFETY WARNING
In the process of welding, there could be possibilities of injury, so please take
protection into consideration during operation. For more details please read the
Operator Safety Guide, which complies with the preventive requirements of the
manufacturer.
Electric shock——Can kill
！
l Set the earth fitting according to applying standard.
l Do not touch the bare electric parts and electrode with uncovered skin, wet gloves or clothes.
l Make sure you are insulated from the ground and the work piece.
l Think safety first.
Gases and fumes——May be a health hazard
！
l Keep your head out of the gases and fumes produced by welding.
l When welding, ventilators or air extractors should be used to avoid breathing in the gases.
l Wear suitable respiratory protection
Arc rays——Harmful to your eyes and will burn your skin.
l Wear suitable protective mask, light filter and protective garment to protect eyes and body.
l Prepare suitable protective mask or curtain to protect bystanders.
Fire——Fire extinguishing equipment kept nearby!
l Cutting spark may cause fire, make sure there are no flammable materials or liquids around the working area.
Noise——Excessive noises will be harmful to your hearing.
l Use ear protector or others means to protect ear.
l Warn bystanders that noise is harmful to hearing.
Malfunction——Use qualified technician to repair machine.
l If faulty during installation and operation, please follow this manual instruction on fault finding.
l If you fail to fully understand the manual, or fail to solve the problem with the instructions, you should contact the
suppliers or the service centre for professional help.
DUTY CYCLE 60%
Duty Cycle is a percentage of 10 minutes that the unit can weld at rated load without overheating. If unit overheats,
thermostat(s) opens, output stops and the cooling fan runs. Wait fifteen minutes for unit to cool down. Reduce
amperage, or duty cycle before welding again.
Exceeding the duty cycle can damage the machine and void the warranty

MACHINE DESCRIPTION
Thank you for purchasing a TRADEweld product. The TRADEweld Mig 250 M is a Multi-Process
welder that incorporates Mig, TIG and MMA welding in one unit.
Adopting the most advanced inverter technology, it uses power Inverters and PWM technology,
which works by rectifying the mains AC input voltage. The rectified input voltage is then inverted
and filtered to a smooth DC current. The smoothed DC current is then sent through power
switches (Mosphets) which convert it back to a high frequency AC voltage. The AC voltage is then
stepped down by a transformer and rectified to DC. The rectified DC is then filtered and smooth for
a usable power output for welding.
The development of inverter welding equipment has massive benefits which include greatly
reduced size and weight, greater power efficiency, multi-process capabilities and many more. The
inverter welder’s power source produces a much stronger and concentrated stable arc which
results in better quality and more efficient welds.
In MMA mode, this unit is a constant currant DC MMA (Arc) inverter welder.
In Mig mode, this unit is a constant voltage DC Mig (Gas) inverter welder.
In TIG mode, this unit is a constant current DC High frequency start TIG inverter welder.
The Multi- process Series are very efficient and robust. Using advanced technology coupled with
an array of adjustment controls they produce superior welds. The compact size and weight with it
being on wheels and a place to secure the gas bottle to the machine makes it a perfect candidate
for moving the machine around the workshop with the bottle attached.
A facility has been made for the fitment of a Spool Gun (Not supplied) to be connected for ease of
aluminium welding.
CAUTION
WORKING LONGER THAN RATED DUTY CYCLE
CAN DAMAGE MACHINE AND VOID WARRANTY

TECHNICAL SPECIFICATIONS
MODEL
MIG 250M
Rated Input Voltage
AC220V±10%
1Phase
Frequency（Hz）
50/60
Rated Input Current
51.6A
MIG
Output Current Range
50A-250A
Output Voltage Range
14V-26.5V
TIG
Output current range
15A – 250A
Output voltage
65V
H.F Function
Trigger start
MMA
Output Current Range
15A-250A
Output Voltage Range
65V
VRD Function
AUTOMATIC
Efficiency（%）
80
Power Factor
0.73
Load Duty Cycle
60% @ 250A
Insulation grade
F
Protection Class
IP21
Cooling method
Fan-cooled
Dimension L x W x H (mm)
830×380×680
Weight （kg）
62
Spool gun connection
Yes
Spool size
5kg-15KG
Wire size
0.8-1.0