arcweld 130i-ST Manual Del Operador página 14

MAINTENANCE AND TROUBLESHOOTING
D-3
Item
PROBLEMS(SYMPTOMS)
Turn on the power source, and fan
1
works, but the power light is not on.
Turn on the power source, and the
2 power light is on, but fan doesn't
work.
Turn on the power source, and the
power light is not on, and fan doesn't
3
work.
4
No no-load voltage output.
No current output in the welding.
5
Not easy to start arc in the welding,
6 or easy to cause sticking.
Arc break during welding.
7
The welding current can not be
8
adjusted.
The penetration of molten pool is not
9
enough(MMA).
10 Arc blow.
11
The alarm light is on.
TROUBLESHOOTING
POSSIBLE CAUSE
The power light damaged or connection is not
good.
Power PCB failures.
There is something in the fan
The fan motor damaged.
The motor power is faulty.
No input voltage.
Overvoltage (Input voltage is too much or not).
There is trouble inside the machine.
Welding cable is not connected with the two
output of the welder.
Welding cable is broken.
Earth cable is not connected or loosen.
The plug loosen or connect not well.
Oil or dust covered the workpiece.
SMAW/GTAW welding selection is wrong.
The welding current adjusted too low.
The welding current potentiometer in the front
panel connection not so good or damaged.
The welding current adjusted too low.
Airflow disturbance.
The electrode eccentricity.
Magnetic effect.
Over heat
protection.
Over current protection.
RECOMMENDED COURSE OF
Test and repair the inside circuit of
power light on front PCB.
Repair or change power PCB.
Clear out.
Change fan motor.
Test and repair the inside circuit of power PCB
Check whether there is input voltage.
Check input voltage.
Check the front PCB and power PCB.
Connect the welding cable to the
welder's output.
Wrap, repair or change the welding
cable.
Check the earth clamp.
Check and tighten the plug.
Check and clear out.
Select the SMAW weding mode.
Increase the welding current.
Repair or change the potentiometer.
Increase the welding current.
Use the shelter from airflow.
Adjust the electrode angle.
Change the electrode.
Incline the electrode to the opposite way
of the magnetic blow.
Change the position of earth clamp
or add earth cable in the two side of
workpiece.
Use the short arc operation.
Over
Reduce the welding current output.
welding
current.
Working time Reduce the duty cycle (interval work).
too long.
Unusual
current in Test and repair the main circuit of power
the main PCB.
circuit.
D-3
ACTION