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USER MANUAL

MMA 120GDM/140GDM/160GDM

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Summary of Contents for MMA 120GDM

Page 1: ...USER MANUAL MMA 120GDM 140GDM 160GDM ...

Page 2: ...USER MANUAL 0 YF 29C A3 ...

Page 3: ...ALLATION INSTRUCTION 10 PANEL FUNCTION ILLUSTRATION 13 OPERATION PARAMETER RECOMMENDATION 16 CIRCUIT DIAGRAM 17 ATTENTIONS PREVENTIVE MEASURES 18 POTENTIAL OPERATING PROBLEMS 20 DAILY MAINTENANCE 21 TROUBLESHOOTING AND FAULT FINDING 22 DAILY CHECKING 23 USER MANUAL 1 YF 29C A3 ...

Page 4: ...USER MANUAL 2 YF 29C A3 ...

Page 5: ...y loss Notes This means it may cause body hurt if not avoid Please refer to the related description when this sign occurred Danger Please follow the rules below in case of bad accidents 1 Do not use the machine in none welding areas 2 The machine is safety considered designed please do read the warning notes carefully in case of dead or other bad accidents 3 Follow related regulations for the cons...

Page 6: ...well 10 Cut off all the input power when not use 11 Follow the national or local related standard and regulations when using the AC DC machine at narrow or high position Danger Please use preventive measures to avoid gas and fumes Gas and fumes are harmful to health It may cause choke when operate in narrow space 1 In case of accidents like gas poisoning or choke please use suggested exhaust equip...

Page 7: ...ng area in case of fire Notes Please wear protective appliance to avoid arc spark residue and noise Arc ray can cause eye inflammation or skin burnt Spark and residue will burn your eyes and skin 1 When welding or supervise welding please use preventive facilities with enough shielding 2 Please wear preventive glasses 3 Please wear preventive facilities such as leather gloves coat foot safeguard a...

Page 8: ...d face 2 When feeding the wire manually or press the torch do not put the torch end near to your eyes face and other naked parts Notes Follow the below notes to ensure better work efficiency and power source No person under of in front of the machine when swing in case of injury 1 Precautions against toppling over 2 Warning against the use of welding power source for pipe thawing 3 Lift the power ...

Page 9: ...asurement 7 Anti disturb capability of other used equipments Users should ensure these equipments and the environment are compatible and this may need extra preventive measures 8 Practical state of the welding and other activities 3 Users should follow the below notes to decrease radiation disturb 1 Connect the welding equipments to the power supply lines 2 Maintain the welding equipments regularl...

Page 10: ...ork piece get short circuit its response will be quicker It means that it is easy to design welding machine with different dynamic characteristics and it can even adjust the characteristics to make arc softer or harder Under MMA mode the characteristic of the machine is slope and has VRD function The welding current push current and heat arc initiation current use the same knob for synergic adjust...

Page 11: ...MA 20 120 TIG 40 140 MMA 20 140 TIG 40 160 MMA 20 160 TIG Output voltage V 21 6 24 8 MMA 10 8 14 8 TIG 21 6 25 6 MMA 10 8 15 6 TIG 21 6 26 4 MMA 10 8 16 4 TIG 2520No load voltage V 64 64 64 Power factor 0 73 0 73 0 73 Duty cycle 40 35 35 35 Efficiency 80 80 80 Insulation grade F F F Housing protection grade IP21S IP21S IP21S Weight kg 4 8 4 8 4 8 Overall dimension mm 288 136 234 288 136 234 288 13...

Page 12: ...y The gas supplying route shall include gas cylinder argon decompression flow meter and gas pipe The connecting parts of the gas pipe should be fastened by hose clamp or other objects in order to prevent leakage and air in 2 Connect the plug of TIG torch to of the front panel and fasten it clockwise 3 Connect one end of the earth clamp cable to of the front panel and fasten it clockwise the other ...

Page 13: ...ode while positive connection when welding with acid electrode This procedure shall be operated by electrician Connect proper power cable to the distribution box with corresponding capacity according to the input voltage and current See technical parameter table Do not connect to the inappropriate voltage and make sure that the difference of power supply is within permitted range USER MANUAL 11 YF...

Page 14: ...ng for Installation of MMA 120GDM 140GDM 160GDM STICK USER MANUAL 12 YF 29C A3 Power Supply 1 phase AC230V Earth clamp Connect to ground TIG torch Argon cylinder Work piece Gas meter Power Supply 1 phase AC230V Connect to ground Argon cylinder Gas meter Earth clamp Workpiece Electrode holder ...

Page 15: ... display Operation Instruction 1 The starting up display Switch on the welding power source the front panel displays as Chart 1 After the Welding current display or any key or knob on front panel flashes for 5 seconds the machine enters into the welding mode that saved in the last shutdown Chart 1 the starting up display interface Chart 2 display under STICK mode 2 Operation instruction under STIC...

Page 16: ...the tungsten contacts with the workpiece completely for about one second firstly can see the tungsten pinpoint turns red gradually then lift the torch to achieve arc initiation or the result will be bad Welding will stop after the tungsten and workpiece get short for 4 seconds and will return to normal after one second The tungsten turns to red then dark then back to red during the process If the ...

Page 17: ...e panel displays as Chart 6 when overheating and the multifunctional data display flashes continuously the machine can not work normally Only when the temperature of the welding machine falls below 45 the overheating malfunction would disappear and the machine can work normally without restarting Chart 4 Malfunction display of overheating protection USER MANUAL 15 YF 29C A3 ...

Page 18: ...30A 230 280A 2 Welding variables when use TIG TIG welding specifications of stainless steel as follows Thickness mm Tungsten diameter mm Wire diameter mm Type of butt joint Welding current A Gas flow L min 0 5 1 0 1 0 plain butt joint 35 40 4 6 0 8 1 0 1 0 wire filling 35 45 4 6 1 0 1 6 1 6 40 70 5 8 1 5 1 6 1 6 50 85 6 8 2 0 2 0 2 5 2 0 80 130 8 10 3 0 2 5 3 0 2 25 120 150 10 12 USER MANUAL 16 YF...

Page 19: ...CIRCUIT DIAGRAM USER MANUAL 17 YF 29C A3 ...

Page 20: ... is medium and small model But the running of the machine will also generate high currents which natural wind circulation cannot satisfy its cooling demands Therefore each machine has an internal fan to ensure its stable performance Make sure the intake is not blocked or covered there should be 0 3 meter distance from welding machine to objects of environment User should make sure the working area...

Page 21: ...sation circuit of voltage will assure that welding current keeps is in allowable range If power voltage is exceeding allowable range limits it can damage the components of machine The operator should understand this situation and take preventive measures 4 There is a grounding cable behind welding machine with a mark Before operation welding crust must be grounded reliably with cable in order to p...

Page 22: ...he deviation of power voltage from rated value may cause that the output current does no accord with adjusted value When the power voltage is lower than rated value the maximum output current may be lower than rated value 3 The current can not keep stable during operation This situation may relate to the following factors 1 The voltage of electric power network changes 2 Serious interference from ...

Page 23: ...nsure perfect contact Especially plugs and sockets Fasten the loosing joints In case of oxidation remove oxide film with sand paper and connect again 4 Prevent water from entering into the machine and prevent the machine from getting moist If any blow and dry Measure the insulation with megohmmeter to make sure it is qualified to use 5 If the welding machine is not used for a long time pack the ma...

Page 24: ...ol board contact dealers The meter shows Fan works normally No welding output 1 Check if all the sockets in the machine are connected well 2 There is open circuit or badness of connect at the joint of output terminal 3 The control cable on the torch is broken off or the switch is damaged 4 The control circuit is damaged contact to dealers the meter shows Fan works normally Abnormal indicator light...

Page 25: ...hether the outer shell or other connect parts are loosen CABLE Position Checking keys Remarks Output cable 1 Wearing out of the cable insulated material 2 Cable connecting head naked insulation damage or loosen the end of power supply and cable of main material connecting point For life security and stable welding adopt suitable method to check according to working place Simple check daily Careful...

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