-
17
-
7
、
DAILY MAINTENANCE AND TROUBLE SHOOTING
Warning:
Only after switching off the power supply and ensuring safety, the welding
machine can be opened up for check. Otherwise it may cause electric shock or
burn and other safety accidents
7.1 Attention
：
a. Connect cable to port well. Any damage can influence the stability when
welding.
b. Forbid the bare cable and port to be touched by other metal, avoid short
circuit.
c. Avoid breaking the cable.
d.
Avoid knocking or heavy weight.
e.
Keep good ventilation.
f. Daily maintenance is not enough. In order to keep excellent performance,
periodic maintenance and checking and cleaning the inside components
is necessary.
g. In normal condition, there will be quantity of spark mote and oil dust.
Check and clean in every three months.
h. Check cables including the adjusting button and spares in panel regularly.
i. Change contact tube and wire feeder wheel and clear wire feeder pipe
regularly.
7.2 Trouble Shooting
NO
TROUBLE
POSSIBLE CAUSE
REPAIR
01
Switch on but indicator light
does not work
（
1
）
Air switch could be out of
order.
（
2
）
Power fuse is blown.
（
1
）
change the controller
（
2
）
change fuse
02
air switch on back panel
breaks.
（
1
）
Air switch cannot work.
（
2
）
IGBT mould is damaged
（
3
）
3 phase commutate bridge is
damaged
（
4
）
control PCB damaged
（
1
）
change controller
（
2
）
change IGBT mould
（
3
）
change
3
phase
commutate bridge
（
4
）
change panel
03
Too hot when welding
（
1
）
over-load operating for long
time
（
1
）
operate within load
04
Cannot adjust current
（
1
）
controller cable of wire feeder
is damaged or control PCB is
damaged.
（
2
）
the connection wire of current
divider may be damaged
（
3
）
control PCB is damaged
（
1
）
change
（
2
）
fasten
（
3
）
change
05
Unstable arc, big spatter
（
1
）
wrong procedure
（
2
）
contact tip wear
（
1
）
correct procedure
（
2
）
change contact tube
07
CO2 regulator does not work
（
1
）
CO2 regulator is damaged
（
1
）
change
