１７
the shield gas;
9.Wrong model of contact
tip or the tip hole is
damaged;
10.Too much dirt in wire
feed pipe;
11.Ground
wire
gets
flexible;
9.Wire is feed without
pressing torch
1.Short circuit on switch;
2.Manual wire feeding
button is damaged;
1.Repair or replace welding torch;
2.Replace manual wire feeding
button;
10.Current and voltage can
not be adjusted
1.The potentiometer of
current and voltage is
damaged;
2.The PCB is damaged.
1.Replace potentiometer;
2.Repair or replace the PCB;
11.There is wire feeding,
but no current spark, or
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.Check and replace the damaged
parts;
!SPECIAL ATTENTION: If there some problems that can not be judged or solved, please do not hesitate to contact our
company to get some technical assistance. Please do not repair or open the machine arbitrarily. There is high voltage
after cutting power for 10 minutes, only qualified electrician can operate!
九、
Complete sets
1.
NB-LT welding machine 1set
2.
Ground wire 1
3.
Welding torch 1
4.
Heater 1
5.
Attached documents
：
Operation manual
、
Certificate
、
Warranty Each 1
★
6.Gas bottle bracket 1set (Optional)
