There are gas
supply and
current output
but no wire
feeding after
pressing torch
trigger
●Wire feeding unit is stuck
●Wire feeder fails
●Control board in the welder fails
● Unblock the wire feeding unit
● Repair the wire feeder
● Ask professional personnel for help
Welding
current is
instable
●Unsuitable moment adjustment
for wire feeder
● Wire feed rolls do not match
welding wire
● Contact tip is worn severely
● Wire liner of torch is worn
severely
●Welding wire is of poor quality
● Readjust moment of wire feeder
● Select suitable wire feed rolls and welding wire
● Replace the contact tip of torch
● Replace the wire liner
● Replace wire with one of better quality
2) Spare Parts List for Maintenance
Rectifier tube SFR25U20PN
Electrolytic capacitor CD-1500uF-200V
Integrated circuit UC3525AN
Integrated circuit UC3844B
Integrated circuit OP2177
14. TRANSPORTATION AND STORAGE
Transportation
Equipment should be handled with care in transportation to avoid severe impact. Equipment should be
protected from damp and rain in transportation.
Storage
Temperature for storage: -25℃~+50℃
Humidity for storage: relative humidity≤90%
Storage life: 12 months
Place for storage: ventilated indoor place without corrosive gas