Matco Tools MG148 Operator'S Manual Download | Manualshive

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OVERVIEW

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Summary of Contents for MG148

Page 1: ...IG WELDING MACHINE 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 OPERATOR S MANUAL ...

Page 2: ...RAMETERS 10 3 2 DUTY CYCLE OVER HEAT 10 3 3 EQUIPMENT CONNECTION 11 4 OPERATION 12 4 1 LAYOUT FOR THE FRONT AND REAR PANEL 12 4 2 WELDING OPERATION 13 4 2 1 VOLTAGE SETTING 13 4 2 2 WIRE SPEED SETTING 13 4 3 WELDING PARAMETERS 13 4 4 OPERATION ENVIRONMENT 13 4 5 OPERATION NOTICES 14 5 MAINTENANCE TROUBLESHOOTING 15 5 1 MAINTENANCE 15 5 2 TROUBLESHOOTING 15 5 3 MACHINE SPARE PARTS DRAWING 15 5 4 MI...

Page 3: ... be lift especially for children After shut off the machine power please maintain and examine the equipment according to 5 because of the DC voltage existing in the electrolytic capacitors ELECTRIC SHOCK CAN KILL Never touch electrical parts Wear dry hole free gloves and clothes to insulate yourself Insulate yourself from work and ground using dry insulation Make certain the insulation is large en...

Page 4: ...s and gases When welding keep your head out of the fume Use enough ventilation and or exhaust at the arc to keep fumes and gases away from the breathing zone When welding with electrodes which require special ventilation such as stainless or hard facing or on lead or cadmium plated steel and other metals or coatings which produce highly toxic fumes keep exposure as low as possible and below Thresh...

Page 5: ...an Do not attempt to override the governor or idler by pushing on the throttle control rods while the engine is running DO NOT adds the fuel near an open flame welding arc or when the engine is running Stop the engine and allow it to cool before refueling to prevent spilled fuel from vaporizing on contact with hot engine parts and igniting Do not spill fuel when filling tank If fuel is spilled wip...

Page 6: ... Connect the work cable to the work as close to the welding area as practical Work cables connected to the building framework or other locations away from the welding area increase the possibility of the welding current passing through lifting chains crane cables or other alternate circuits This can create fire hazards or overheat lifting chains or cables until they fail UNSECURED CYLINDERS may be...

Page 7: ...f EMF is still ongoing Before any conclusion we should minimize exposure to EMF as few as possible In order to minimize EMF we should use the following procedures Route the electrode and work cables together Secure them with tape or sleeve All cables should be kept as far away from the operator as possible Never coil the power or earth cables around operator body Connect the work cable to the work...

Page 8: ...ne of the above problems happens the alarm lamp on the front panel will illuminate and output current will be shut off automatically to protect itself and prolong the equipment using life M SERIES Features 1 Digital control system with infinitely adjustable non step settings for power wire speed 2 Electronic inverter power source provides high performance and efficiency 3 Waveform control provides...

Page 9: ...ier fast recovery diodes and is outputted by inductance filtering Meanwhile the welding current parameter can be adjusted infinitely to meet with the requirements of welding application 2 3 Volt Ampere Characteristic The inverter has an excellent volt ampere characteristic whose graph is shown as the following figure The relation between the rated loading voltage U2 and welding current I2 is as fo...

Page 10: ...OVERVIEW 8 ...

Page 11: ...duty cycle is defined as the proportion of the time that a machine can work continuously over a 10 minute cycle when set at 100 of rated output welding current in 40C 104F ambient environment When the transformer reaches an over heat condition the heat sensor inside it will open and will output an instruction to circuit board to cut AC relay and the output welding current while illuminating the ov...

Page 12: ...ve roll V groove and torch contact tip size match wire diameter on spool 6 Lift idler roller arm and guide wire over V groove on drive roll and into torch liner 7 Secure idler roller arm in place and tighten tensioning spring 8 Remove gas nozzle and contact tip from torch neck 9 Set wire speed control to 100 turn ON machine and holding torch neck away from face push trigger to feed wire into torch...

Page 13: ...OPERATION 11 4 Operation 4 1 Layout for the front and rear panel ...

Page 14: ...D When illuminated display is actual output welding current 7 Wire Speed LED When illuminated display is the desired wire speed 8 Trigger Function Select 2T ON OFF 4T ON Latch Latch OFF 9 Wave Control Knob Controls arc characteristic or the rate at which the amperage rises when a short circuit is produced 10 Welding Voltage Knob Set the welding volts 11 Earth Output Connector This polarity must co...

Page 15: ...the machine and any structure 4 4 Operation Notices Read 1 carefully before attempting to use this equipment NEMA power cord plug must be inserted directly into GROUNDED outlet by others Insure that the input LINE circuit is rated at nameplate voltage with 20 amp Min breaker Ensure good ventilation of the machine to improve duty cycle ratio Make certain welding area is free of all flammable or com...

Page 16: ...kage and remove Observe LED display lamp and confirm POWER lamp is continuously illuminated If this lamp id flickering LINE voltage is too high or low Observe that both voltage V and wire speed S knobs are functional and turn easily If not replace potentiometers Confirm all welding cables are not damaged and all terminal connections are secure Loose connectors will quickly over heat cables and ter...

Page 17: ...ed Check the board 4 Depress trigger switch no wire feed Wire feeder doesn t turn Motor damaged Check and replace Control circuit damaged Check and replace wire feed board Wire feed turns but no wire feed at nozzle Welding wire skids over drive roller wheel Check tension arm tighten Welding wire skids over drive roller wheel Confirm roller groove matches wire dia Drive roller worn Replace Wire won...

Page 18: ...ned it gradually clogs up and causes wire feed malfunctions Clean the wire guide in the following manner a Cut the wire and remove the welding gun from the feeder b With a pneumatic pistol blow compressed air through the wire guide c Blow the wire feed mechanism and reel housing clean with compressed air d Reattach the torch install wire feed wire install and tighten the contact tip with wrench an...

Page 19: ...en the wire end 20 cm out and cut the wire in the straightened location 5 Open the pressure control level which then exposes the drive roll wire groove 6 Thread the wire through the wire s rear guide over the roller making certain it aligns with groove feed 10 cm into the gun s wire guide 7 Close the feed gear and fasten it with the pressure control lever Make sure that the wire runs in the feed r...

Page 20: ... Two Way 1 00 8 520 3053 Fan Mouting Plate CP 1 00 9 740 0122 Fan Cover CP 1 00 10 740 0121 Cooling Fan CP 1 00 11 520 3054 Cabinet Center Panel 148 208 1 00 12 538 0016 Spool Holder Assembly CP 1 00 13 520 3015 Spool Holder Shaft Assembly CP 1 00 14 520 3055 Cabinet Base 148 208 1 00 15 520 3016 Hinge Base CP 1 00 16 520 3017 Hinge Lever CP 2 00 17 520 3018 Wire Feeder Insulation Board CP 1 00 18...

Page 21: ...Control Plate 1 00 32 520 3030 Shunt 148 208 1 00 33 520 3030 Control PCB 148 208 1 00 34 520 3057 Cabinet Front Panel 148 208 1 00 35 520 3034 Power Inverter M148 1 00 520 3035 Power Inverter M208 1 00 36 520 3032 Burn Back Potentiometers PCB 1 00 37 520 3033 Power Board 148 208 1 00 38 520 3034 Output Adaptor Brass Panel Mount 148 208 2 00 39 520 3058 Sealing plate 1 00 40 513N0010 Earth Clamp 3...

Page 22: ...THANK YOU FOR USING OUR PRODUCTS 20 5 6 MIG Gun Exploded Parts ...

Page 23: ...THANK YOU FOR USING OUR PRODUCTS 21 5 5 Electrical Schematic Drawing ...

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