１
NB-250/270/315LB
MIG/MAG/CO
2
WELDING MACHINE
MANUAL
INSTRUCTION
Страница 1: ...NB 250 270 315LB MIG MAG CO2WELDING MACHINE MANUAL INSTRUCTION...
Страница 2: ...ING THIS MANUAL AND THE SAFETY PRECAUTIONS CONTAINED THROUGHOUT And most importantly think before you act and be careful Special Attention Very Important AVOID FALLING DOWN WHEN THE WELDING MACHINE IS...
Страница 3: ...water for cooling Never simultaneously touch electrically hot parts of electrode holders connected to two welders because voltage between the two can be the total of the open circuit voltage of both w...
Страница 4: ...damaged Make sure that the gas in the storage cylinder is qualified for welding and the decompression flowmeter the adapter and the pipe are all in good condition Always keep cylinders in an upright...
Страница 5: ...able if the welding cable is by your left side then the ground cable should be by your left side too d The Welding cable and the ground cable are as short as possible e D e Do not work near to the wel...
Страница 6: ...f working principles 2 Main electric diagram 3 Block schematic diagram Panel function introduction 2 Rear Panel Function Drawing 3 Gas bottle bracket Optional introduction and installation drawing Ins...
Страница 7: ...ircuit the diameter of ball on wire end almost the same as wire diameter high success rate at arc striking 3 Usage Widely applied in the fields of automobile steel furniture filing cabinet security do...
Страница 8: ...no sunshine shooting rain dust etchant gas and combustibles the environment temperature is to be in the range of 10 40 The machine should be placed in where there is no metal waste Keep the welding po...
Страница 9: ...is no out putting from the welding machine it can work again after the temperature dropping When welding current is lower than 200A the gas flow is 8 15L min when the welding current is larger than 2...
Страница 10: ...r flue jammed or cooling fan damaged 7 Change over switch of welding gas checking before welding to adjust the shield gas flow turn it on gas checking Turn it on welding position when welding 8 Change...
Страница 11: ...l fuse holder used for short connect protection of welding machine control circuit inside fuse 1 5A 5 Over current protection switch Air switch welding machine have abnormal disconnect the power sourc...
Страница 12: ...g Note if buy gas bottle bracket together machine please remove the two rear wheels and install them on the support plate of bracket Then install U style bracket and done refer to Fig 5 and 6 Fig 7 is...
Страница 13: ...with wet hands Do not put anything on the power cable Connect all the parts well Install according to the below orders Connect the three phase power cable to the power switch of distribution box well...
Страница 14: ...ip into the wire guide pipe it reach torch connector through guide tube press the wire wheel and fasten it with suitable strength B Make sure the diameter of contact tip is same as the used electrode...
Страница 15: ...or it can not be opened and repaired in 5 minutes after cutting off power 2 Maintenance A Check connectors at fixed period to see if they become flexible or if there is poor contact B Keep machine cle...
Страница 16: ...o many air holes on welding seam 1 CO2 gas is not pure 2 The gas flow is not enough 3 There is grease dirt or rust on welding seam 4 The wind in the welding place is too heavy 5 CO2 gas circuit is blo...
Страница 17: ...r there is noise in machine 1 The fast recovery diode is damaged 2 IGBT is damaged 3 Circuit or other components are damaged 1 Check and replace the damaged fast recovery diode 2 Replace IGBT or PCB 3...
Страница 18: ...1 0 7 1 1 1 2 1 8 1 7 1 5 2 0 2 1 2 2 2 3 2 4 2 5 AP1 8 6 8 9 8 8 9 1 27V 27V 8V 26V 1 00 9 9 RT2 PA1 6 0 5 9 5 7 5 8 V1 L4 2 6 HL1 7 5 7 6 7 8 KT1 7 7 C 5 R 1 7 8 EV1 C1 1 TA2 R 6 C8 C1 2 V2 4 2 4 4...
Страница 19: ...erved to Westweld Huayuan Company If there is any changes in the user s manual forgive not to inform separately Westweld Ltd 4 23 4 No 51 Xuefu Avenue Nanan Chongqing China E mail info westweld com sa...
