１５
I.
To get excellent welding performance, the "welding current" and "welding voltage" should be adjusted when
welding.
2.
Matters need attention
A.
When welding, the cable of welding torch can not be bended too much, or it will affect normal wire feeding;
B.
Lubricating grease or engine oil can not be used on wire feeding roll and wheel;
C.
The contact tip of welding torch is consumable, after long time use, the welding current may unstable, please
replace it in time;
D.
The nozzle of welding torch is consumable, please replace it in time. When clear the spatter on nozzle, please
take it down and clear lightly. A spatter prevent grease is recommended to use, which can clear spatter easily
and lengthen the service life of nozzle.
E.
After long time use, dust get into the wire feeding pipe of welding torch, which may affect normal welding, so
please take the pipe out at fixed period and wash with kerosene or dry compressed air, shake the pipe before
cleaning;
F.
When welding, please control the wire length between nozzle and work-piece. Generally, the length should be
10 times as wire diameter; If too long, there will be unstable welding current, more spatter and air hole; if
too short, the nozzle will be easily blocked by spatter;
八、
Maintenance and repairing
1.
Matters need attention
A.
When maintain or repair, the power must be cut off.
B.
Since this machine is filtered by large capacity and high voltage electrolytic capacitor, 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 clean: the service life will be shorten because of dirty in the machine, so please open and clean
the machine at least half a year;
3.
Trouble shooting
A.
The three phase voltage should be 380±15%, check and make sure the voltage is in this range;
B.
Make sure the power switch is not damaged, and the fuse and power cable are installed reliably, or there may
be open phase or poor contact;
C.
Make sure the connection of welding cable is good.
D.
Check if welding switch or cable is damaged, and if nozzle, contact tip, tip table and shunt are burned or
damaged;
Common faults and eliminating methods:(see below sheet)
Faults
Reasons
Eliminating methods
1.Put power on, the power
indicator do not light
1.Open phase of three
phase power;
2.The power switch is old
and damaged;
3.The 1.5A fuse of power
control is melt;
1.Check the three phase power
switch;
2.Replace power switch;
3.Replace the fuse;
2.Welding machine do not
work,
under
voltage
indicator light
1
．
Open phase on three
phase power;
2
．
Under voltage on three
phase power;
Check three phase supply power,
make sure supply voltage fit the
required voltage;
3.Press torch switch, wire
wheel moves, but there is
no wire sending out from
torch, or the wire feeding
is unstable
1.The wire wheel is not
tighten;
2.The diameter of wire slot
is not same as electrode
wire;
1.Fasten the wire wheel;
2.Replace wire slot;
3.Eliminate the spatter on contact
tip;
4.Replace wire feeding wheel;
