SMART 200 TIG PULSE
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4.2. Troubleshooting
•
Before arc welding machines are dispatched from the factory, they have already been debugged accurately.
So forbid anyone who is not authorized by our company to do any change to the equipment!
•
Maintenance course must be operated carefully. If any wire becomes flexible or is misplaced, it maybe
potential danger to user!
•
Only professional maintenance personal who is authorized by our company could overhaul the machine!
•
Guarantee to shut off the arc welding machine’s power before turn on the outline of the equipment!
•
If there is any problem and has no the authorized professional maintenance personal of our company, please
contact local our company agent or the branch company!
If there are some simple troubles of SMART 200 welding machine, you can consult the following overhauling chart:
S/N
Troubles
Reasons
Solution
1
Turn on the power source,
and fan doesn’t work, but
the power light is not on.
The power light damaged or connection
is not good
Test and repair the inside circuit of
power light
The transformer of power is broken
Repair or change the transformer
Control PCB failures
Repair or change the control PCB
2
Turn on the power source,
and the power light is on, but
fan doesn’t work.
There is something in the fan
Clear out
The start capacitor of fan damaged
Change capacitor
The fan motor damaged
Change fan
3
Turn on the power source,
and the power light is not on
and fan doesn’t work.
No power supply input
Test the power supply input
The fuse on the rear panel is broken
Change the fuse (3A)
4
No no-load voltage output
(MMA)
The machine is damaged
Check the main circuit and the
PCBs(Pr1)
5
Arc can not
be ignited
(TIG)
There is
spark on the
HF igniting
board.
The welding cable is not connected with
the two output of the welder.
Connect the welding cable to the
welder’s output.
The welding cable damaged.
Repair or change it.
The earth cable connected unstably.
Check the earth cable.
The welding cable is too long.
Use an appropriate welding cable.
There is oil or dust on the workpiece.
Check and remove it.
The distance between tungsten electrode
and workpiece is too long.
Reduce the distance (about 3mm).
The distance between the discharger is
too short.
Adjust this distance (about 0.7mm).
The malfunction of the welding gun
switch.
Check the welding gun switch, control
cable and aero socket.
6
HF striking arc can not be
stopped
Check Pr2
Repair or change it.
7
No gas flow (TIG)
Gas cylinder is close or gas pressure is
low
Open or change the gas cylinder
No controlling electromagnetic valve
signal
Repair or change the pulse board
Something in the valve
Remove it
Electromagnetic valve is damaged
Change it
8
When welding, it is hard to
strike arc or easy to
stick.(MMA)
Connector is loose or connection is not
good.
Check and screw it.
There is oil or dirty on the workpiece.
Check and clear it.
9
The welding current can not
be adjusted
The welding current potentiometer on the
front panel connection is not good or
damaged
Repair or change the potentiometer
The control signal of the pulse board is
wrong
Repair or change the pulse board
10
The penetration of molten
pool is not enough.
The welding current is adjusted too low
Increase the welding current
The arc is too long in the welding process
Use the short-arc operation
