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OPERATORS' MANUAL
Inverter DC MMA Arc Welding Machine
SKYARC 2750
IMPORTANT: Read this Owner's Manual Completely before attempting to use this
equipment. Save this manual and keep it handy for quick reference. Pay particular
attention to the safety instructions we have provided for your protection. Contact your
distributor if you do not fully understand this manual.
SWEISSWELD.COM
info@sweissweld.com
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Table of Contents
Troubleshooting
Related Manuals for Sweiss SKYARC 2750
Summary of Contents for Sweiss SKYARC 2750
- Page 1 OPERATORS’ MANUAL Inverter DC MMA Arc Welding Machine SKYARC 2750 IMPORTANT: Read this Owner’s Manual Completely before attempting to use this equipment. Save this manual and keep it handy for quick reference. Pay particular attention to the safety instructions we have provided for your protection. Contact your distributor if you do not fully understand this manual.
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Page 2: Table Of Contents
CONTENT §1 SAFETY ............................1 §1.1 S ..............................1 IGNAL XPLANATION §1.2 A ............................. 1 ELDING AMAGE §1.3 T .................... 4 HE KNOWLEDGE OF LECTRIC AND AGNETIC IELDS §2 SUMMARY ............................5 §2.1 B ..............................5 RIEF NTRODUCTION §2.2 M .............................. -
Page 3: Safety
SAFETY §1 SAFETY §1.1 Signal Explanation The above signals mean warning! Notice! Running parts and getting an electric shock or thermal parts will take damage for your body or others. The corresponding notices are as follows. It is quite a safe operation after taking several necessary protection measures. §1.2 Arc Welding Damage ... - Page 4 SAFETY Always be sure the work cable makes a good electrical connection with the metal being welded The connection should be as close as possible to the area being welded. Maintain the electrode holder, work clamp, welding cable and welding machine in good, safe operating condition.
- Page 5 SAFETY SELF-PROTECTION Keep all equipment safety guards, covers and devices in position and in good repair. Keep hands, hair, clothing and tools away from V-belts, gears, fans and all other moving parts when starting, operating or repairing equipment. Do not put your hands near the engine fan. Do not attempt to override the governor or idler by pushing on the throttle control rods while the engine is running.
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Page 6: The Knowledge Of Electric And Magnetic Fields
SAFETY Rotating parts may be dangerous. Use only compressed gas cylinders containing the correct shielding gas for the process used and properly operating regulators designed for the gas and pressure used. All hoses, ttings, etc. should be suitable for the application and maintained in good condition. ... -
Page 7: Summary
SUMMARY §2 Summary SKYARC 2750 This operation manual is suitable for the models of §2.1 Brief Introduction SKYARC - serires（discrete） welder is a MMA arc welder which adopts the latest pulse width modulation (PWM) technology and the insulated gate bipolar transistor (IGBT) power module. -
Page 8: Working Principle
SUMMARY §2.3 Working Principle The working principle of SKYARC - serires （ discrete） welder is shown as the following gure. Three-phase 380V work frequency AC is recti ed into DC (about 530V), 3-phase 220V work frequency AC is recti ed into DC (about 310V), then is converted to medium frequency AC (about 20KHz) by inverter device (IGBT module), after reducing voltage by medium transformer (the main transformer) and rectified by medium frequency recti er (fast recovery diodes), and is outputted by inductance ltering. - Page 9 SUMMARY SWEISSWELD.COM info@sweissweld.com...
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Page 10: Installation & Adjustment
INSTALLATION AND ADJUSTMENT §3 Installation & Adjustment §3.1 Parameters Model SKYARC 2750 Parameters Three-phase，380V±10%，50Hz Three-phase，220V±10%，50Hz Power source 13.9 24.2 Rated input current（A） ） Rated input power（KW） 0.95 0.93 Power factor 10~275 Welding current range（A） Max no load voltage (V) 91％... - Page 11 INSTALLATION AND ADJUSTMENT SKYARC 2750 Model Three-phase，380V±10% Three-phase，220V±10%，50Hz Rated input voltage（V） 50/60 frequency Rated input power（KW） 13.5 24.4 Rated input current（A） Rated input apparent power （KVA） Welding current adjust range 10-275 （A） 50% 275A 50% 275A 60% 190A 60% 200A Duty Cycle（40℃...
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Page 12: Duty Cycle & Over Heat
INSTALLATION AND ADJUSTMENT §3.2 Duty cycle & Over heat The letter “X” stands for duty cycle, which is de ned as the proportion of the time that a machine can work continuously within a certain time (10 minutes). The rated duty cycle means the proportion of the time that a machine can work continuously within 10 minutes when it outputs the rated welding current. -
Page 13: Welding Polarity Connection Way
INSTALLATION AND ADJUSTMENT §3.4 Welding polarity connection way (Take SKYARC as an example) Choosing the connection of DCEN or DCEP is based on the arc stable burning condition. The di erent electrodes need di erent connection way. Please refer to the electrode manual. - Page 14 INSTALLATION AND ADJUSTMENT power supply voltage of distributor; Induce the machines using power supply in the same time; Set the voltage stabilization device in the front of power cable input. Note: Please refer to the nameplate about the right power supply connection (three phase 220v or three phase 380v ) .Wrong power connection may cause machine failure! SWEISSWELD.COM...
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Page 15: Operation Control And Connectors
§4.3 Arc force adjustment Refer to §2.4 section of volt-ampere characteristic graph （under 20V graph part） ,when the SKYARC 2750 load voltage is under 20V, there is arc force output. The arc length is shorter, the §4.2 Welding current adjustment SKYARC - serires has the function of welding current pre-setting. - Page 16 OPERATION CONTROL AND CONNECTORS arc force is bigger. It can prevent sticking and increase the depth of penetration. The number “0-10”on the potentiometer is not actual arc force, but a proportion concept. When the potentiometer is in the “0” position (the minimum of the arc force), the operation of arc force is not in use.
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Page 17: Hot Start Adjustment
OPERATION CONTROL AND CONNECTORS §4.4 Hot start adjustment The number ”0~10” on the potentiometer is not actual arc force, but a proportion concept. More welding current pre-set value, more hot start current addition. Clockwise turning the hot start knob, the hot start added current lasts long time, the striking is more easy. -
Page 18: Manipulation Of Electrode
OPERATION CONTROL AND CONNECTORS electrode electrode electrode workpiece workpiece workpiece touch scrape 2~ 4mm Scrape the workpiece for Electrode touch Lift up for about 2-4mm strinking arc workpiece §4.5.2 Manipulation of electrode In MMA welding, there are three motions to being matched in the end of electrode: the electrode moving to the molten pool along axes;... -
Page 19: Electrode Selection
OPERATION CONTROL AND CONNECTORS butt joint lap joint corner joint T joint §4.6.2 Electrode selection The electrode diameter selection is based on the workpiece thickness, welding position, joint form, welding layer, etc. Please refer to the following table. The relation between the electrode diameter & workpiece thickness Workpiece 4～5 6～12... -
Page 20: Arc Welding Defect And Prevent Method
OPERATION CONTROL AND CONNECTORS §4.7 Arc Welding Defect and Prevent Method Defect name Caused reasons Prevent methods Welding The groove angle is not proper Choosing the proper groove angle & assembly seam The root face and assembly gap is not equal gap, improve the assembly quality doesn’t Welding... -
Page 21: Operation Environment
OPERATION CONTROL AND CONNECTORS Defect name Caused reasons Prevent methods Welding The groove angle is not proper Choosing the proper groove angle & assembly seam The root face and assembly gap is not equal gap, improve the assembly quality doesn’t Welding technics parameters... - Page 22 OPERATION CONTROL AND CONNECTORS ● Turn o the engine when the operation nished to economize energy sources. ● When power switch shuts o protectively because of failure. Don’t restart it until problem is resolved. Otherwise, the range of problem will be extended. Note: Please refer to the nameplate about the right power supply connection (three phase 220v or three phase 380v ) .Wrong power connection may cause machine failure!
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Page 23: Maintenance & Troubleshooting
MAINTENANCE & TROUBLESHOOTING §5 Maintenance & Troubleshooting §5 Maintenance & Troubleshooting §5.1 Maintenance §5.1 Maintenance In order to guarantee that arc welding machine works high-e ciently and in safety, it must In order to guarantee that arc welding machine works high-e ciently and in safety, it must be maintained regularly. -
Page 24: Troubleshooting
If there is any problem and has no the authorized professional maintenance personal of our company, please contact local agent or the branch company! If there are some simple troubles of SKYARC 2750/2750CEL welding machine, you can consult the following overhauling chart: Troubles... - Page 25 MAINTENANCE & TROUBLESHOOTING Troubles Reasons Solution The minimum current is not accordant Adjust the potentiometer RT1on the The minimum & maximum on (Please refer to 3.1) the current display disaccord The maximum current is not accordant Adjust the potentiometer RT1 on the with the setting current (Please refer to 3.1) current meter...
- Page 26 MAINTENANCE & TROUBLESHOOTING Troubles Reasons Solution Working time too long Induce the duty cycle (interval work) Power supply Over voltage Using the stable power supply uctuated Power supply Using the stable power supply uctuated Under voltage Too many machines protection Induce the machines using power using power supply in supply in the same time...
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Page 27: Electrical Principle Drawing
MAINTENANCE & TROUBLESHOOTING §5.3 Electrical principle drawing SKYARC-2750 SWEISSWELD.COM info@sweissweld.com... - Page 28 MAINTENANCE & TROUBLESHOOTING SKYARC 2750 SWEISSWELD.COM info@sweissweld.com...
- Page 29 SWEISSWELD.COM info@sweissweld.com...
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el inverter arc2750 ouedo conectarlo a 220 volt. y si es si como hacer la coneccion