LOTOS MIG250i User manual

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INSTRUCTION MANUAL·M I G 250 1
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- Safety…………………………..………………..…………………………….…..……....……….. 2
-General Description……...……….......……...…………………….………...……….....………. 3
-M a i n Parameter…….……...…. .........…….....………………………………….…..……….….. 4
-Installation& Operation……………………………………………………………………………. 5
-Speed-r e a d Table…………….….……….......………...…..……….……………………....….… 8
-Caution..……..………..…... .........…. ..................……………………….………..………….… 10
-Maintenance....................…………………………………………...………………. .....…......... 10
-Daily Checking………….…………………………………………………….….……....….…….. 11
Hereby westate t h a t weprovide oneyear ofguarantee f o r t h i s welding equipment since
t h e dateofpurchase.
P l e a s e read a n d understand t h i s instruction manual carefully before t h e installation a n d
operation oft h i s equipment.
T h e contents oft h i s manual m a y berevised without prior notice.
Please visit us http://www.uwelding.com.au/ for more information.
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INSTRUCTION MANUAL·M I G 250 2
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Welding andcutting is dangerous t o t h e operator, people in o r near t h e working area, andt h e
surrounding, if t h e machine is notcorrectly operated. Therefore, t h e performance o f welding/cutting
m u s t onlybeunder t h e strict andcomprehensive observance ofa l l relevant safety regulations.
P l e a s e read a n d understand t h i s instruction manual carefully before t h e installation a n d operation.
·T h e switching offunction modes is possibly damaging t o t h e
machine, while t h e welding operation isperformed.
·Do disconnect t h e electrode-holder cable witht h e machine,
before t h e performance o f welding.
·Asafety switch is necessary t o prevent t h e machine f r o m
electric-leakage.
·Welding t o o l s should beofh i g h quality.
·Operators should bequalified.
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·Connect t h e earthcable according t o standard regulation.
·A v o i d a l l contact withlive electrical partsoft h e welding circuit,
electrodes andwireswithbare hands. I t is necessary f o r t h e
operator t o wear d r y welding gloves while heperforms t h e
welding task.
·T h e operator should keep t h e working p i e c e insulating f r o m
himself/herself.
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·A v o i d breathing t h e smoke andgasgenerated while welding o r
cutting.
·K e e p t h e working area ingood ventilation.
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·Wear welding helmet, anti-radiation glassa n d workclothes
while t h e welding operation isperformed.
·Measures a l s o should bet a k e n t o protect people ino r near t h e
working area.
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·T h e welding splash m a y cause f i r e , t h u s remove flammable
material away f r o m t h e working place.
·Have af i r e extinguisher nearby, andhaveatrained person
ready t o useit.
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·Noise is generated while welding/cutting, wear approved ear
protection ifnoiselevel ishigh.
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·Consult t h i s instruction manual.
·Contact your local dealer o r supplier f o r further advice.
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INSTRUCTION MANUAL·MIG 250 3
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This welding machine is manufactured with advanced inverter technology. With high-power
component IGBT and PWM technology, the inverter convert the DC voltage, which is rectified from
input 50Hz/60Hz AC voltage, to high-frequency 20KHz AC voltage; as aconsequence, the voltage
is transformed and rectified. The features of this product are as follows:
-IGBT inverter technology, current control, high quality, stable performance;
-Closed feedback circuit, invariable voltage output, great ability of balance voltage up to ±15%;
-Electron reactor control, stable welding, little splash, deep melting, excellent welding seam
reshaping;
-Slow weld wire feeding for arc starting, be able to cut small ball after welding ，successful arc
starting;
-Suit for welding medium thin plate more than 0.8mm;
-Small-sized, light-weighed, easy to operate, economical, practical.
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INSTRUCTION MANUAL·4
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Input Voltage (VAC) 1phase 240V±15%
Input current (A) 14
Power capacitance (KVA)) 9.2
Output current range (A) 50-250
Output voltage (VDC) 15-29
Duty cycle 60%
Power factor 0.85
Efficiency 85%
Type of wire feeder Embedded
Post-flow time (s) 1
Diameter of the coil (mm) 270
Diameter of the wire (mm) 0.8/1.0
Size of the machine (mm) 500×270×440
Weight (Kg) 26
Thickness (mm) ≥0.8
Insulation class F
Protection class IP21
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MAIN SWITCH
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CIRCUIT DIAGRAM
MIG 250i
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MIG 250 i