Youly Electric YL Powership MMA-250FI Operator'S Manual Download Page 8

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3.7 Standard

* EN 60917-1: Arc Welding Machine Standards

* JB / T 7824-95: Technical Conditions of Inverter Arc Welding Rectifier

* GB 4208-93: Protection Class (IP Code)

3.8 Symbol Chart

Note that only some of these symbols will appear on your model.

Hertz (cycles / sec)

Off

Frequency

Dangerous Voltage

Negative

Increase / Decrease

Positive

AC Auxiliary Power

Direct Current (DC)

Fuse

Protective Earth

Amperage

Line

Voltage

Single Phase

Three Phase

Duty Cycle

SMAW

GMAW

GTAW

High Temperature

Wire Feed Function

Welding Gun

4 Installation

4.1 Connection

* The welder should be placed in dry and no dusty surrounding where there is no

corrosive chemicals, flammable, explosive gases.

Summary of Contents for YL Powership MMA-250FI

Page 1: ...to install dedug operate and maintain the welder Read this instructions carefully and you will understand how to use it to reduce the risk of error operation Warning This machine should be operated and maintained by full time staffs or professionals You are not allowed to operate and repair it unless read this manual ...

Page 2: ...cture 6 3 5 Guide for Marking Models 7 3 6 Parameter 7 3 7 Standard 8 3 8 Symbol Chart 8 4 Installation 8 4 1 Connection 8 4 2 Power Source Connection 9 4 3 Electrode Polarity 9 4 4 Workpiece Connection 10 5 Operation Instruction 10 5 1 Procedure 11 5 2 Electrode Replacement 11 5 3 Slag Removal 12 5 4 Maintenance 12 6 Basic Trouble Shooting 13 7 Parts List 14 8 Interconnection Diagram 15 9 Accesso...

Page 3: ... transfer With the protections of over heating over current Digital display function Plastic handle makes it beautiful and easy to carry Convenient quick connection for the output makes it quick safe simple and stable NOTES The above description may be modified without prior notice such as omissions unclear statements about this welder 2 Safety 2 1 Self Protection The user must comply with occupat...

Page 4: ...attention to its rated duty cycle Do not overload 2 3 Safety Precaution for Installation and Location In some areas where something may fall from the sky personal safety precaution should be taken In some areas around construction site something like the dust acid corrosive gases or other substance in the air cannot exceed the standard value except those generated while welding It is should be equ...

Page 5: ...ice should be able to guarantee the normal implementation of the machine Whether the input cables are damaged or not If yes safe handling must done Warning Disconnect the power source before servicing it Contact with the manufacturer or agent immediately to acquire the service and support skills when users do not have the ability to repair it 3 Technical Description 3 1 Environment Working tempera...

Page 6: ...tifier Filter IGBT Transformer Rectifier Choke 3 4 Equipment Structure The INARC Inverter DC MMA Welder uses portable cabinet structure the upper part of front panel has been equipped with welding current adjustment knob power indicator green abnormal indicator yellow The output terminal is fitted with quick connector both and The back panel owns power switch motor fan input power cable The inside...

Page 7: ...d Input Voltage V 120 10 120 10 Frequency Hz 50 60 50 60 Rated Input Capacity KW 4 56 5 32 Rated Input Current A 21 9 30 5 Rated Duty Cycle 60 115A 60 135A No Load Voltage V 56 56 Output Current Range A 20 115 20 135 Efficiency 85 85 Electrode Size mm 1 5 3 2 1 5 3 2 Cooling Type AF AF Overall Dimension INCH 15 4 4 88 9 29 15 4 4 88 9 29 Gross Weight LBS 10 74 10 74 INVERTER MMA Rated Output Weldi...

Page 8: ...our model On Hertz cycles sec Off Frequency Dangerous Voltage Negative Increase Decrease Positive AC Auxiliary Power Direct Current DC Fuse Protective Earth Amperage Line Voltage Single Phase Three Phase Duty Cycle SMAW GMAW GTAW High Temperature Wire Feed Function Welding Gun 4 Installation 4 1 Connection The welder should be placed in dry and no dusty surrounding where there is no corrosive chem...

Page 9: ...lled 4 2 Power Source Connection Access the back panel power source cable to the power supply which is equipped with circuit breakers and grounding line grid and it is strictly prohibited that ground wire is connected to the grid otherwise bear your own consequences 4 3 Electrode Polarity see above picture Connect the quick plug with electrode holder to the negative terminal and then tightened the...

Page 10: ...or round bars especially metal rod must be less than 12 5mm and it can not be inserted into the welder Also you can not press it heavily 1 Positive Terminal 2 Negative Terminal 3 Power Indicator 4 Knob 5 Abnormal Indicator 6 Digital Display 7 Power Cable 8 Switch NOTES When the welder works for a long time the high temperature indicator will light This means the inside temperature has exceeded its...

Page 11: ... When the electrode is left only 2 3cm away from the holder you have to replace new one to go on working NOTES When the electrodes combustion is in process at high heat do not touch it with bare hands while replacing it Besides the electrode head down should be unified in a metal container And the cover coating should not be caught by the holder Scratch gently when igniting the arc otherwise it is...

Page 12: ...the cable is connected correctly and connectors are connected tightly If scale and loose are found please give a good polish to them Then connect them again tightly Generally if welding machine is operating in environment where there is no heavy accumulated dust the machine need remove dust once a year If in the environment where is polluted with smokes and polluted air it is needed to be removed ...

Page 13: ... Replace the switch 5 Electrode holder cable is too hot output terminals are too hot Capacity on electrode holder is too small Replace larger capacity electrode holder Cable is too thin Replace a proper cable Socket is loosen Remove the oxide coat and re tight it 6 Power off Power capacity is not big enough Enlarge the capacity Welding process Contact the supplier 7 Other problems Contact the supp...

Page 14: ...14 7 Parts List NOTES The above components listed are just for your reference If something different with the real machine kindly follow the real one ...

Page 15: ...set 2 Operator s Manual 1pc 3 Electrode Holder 1pc 4 Earth Clamp 1pc 5 Brush Hammer 1pc NOTES All above mentioned are based on the ordering contact unless otherwise agreed by the parties Circuit Schematic of INARC Welder Figures for reference are subject to change without notice ...

Page 16: ...king should be carried out according to original package s requirement Remember before storage don t forget to clean and seal it with plastic bags Users should maintain the cartons and shock blocks in order to be properly packaged in need of long distant transportation For the long distant transportation it should be retrofitted with a wooden case and mark the up or rain symbols 11 Quality Warrant...

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