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Idiomas disponibles
Idiomas disponibles
Check the maximum rated current (according to the Duty Cycle chosen). Make sure the welding current is never higher than the rated value. Over current
running will obviously shorten the operation life, even damage the machine.
Never over voltage!
The Input Voltage could be found in Technical data diagram. The auto-compensation function will keep the welding current in the rated range. If the input
voltage exceed the permissible value, the machine would be damaged. Users should take protective measures in advance to avoid it.
Make sure earth connected before operation.
On the rear panel of welding machine, a screw for earth connecting would be found. It must be ground connected with cable whose section is bigger than
6mm2 before operation, to avoid accidents caused by static or electricity leak.
3.5 Welding problems and solution
The phenomenon listed below may happen due to relevant accessories used, welding material, surroundings and power supply. Pleas improve
surroundings and avoid these problems..
Arc starting difficulty. Arc interruption happens easily:
a)Examine whether grounding wire clamp contacts with the work pieces well.
b)Examine whether each joint has improper contact.
The output current fails to reach rated value:
The deviation of power voltage from rated value may cause that the output current does no accord with adjusted value. When the power voltage is lower
than rated value, the maximum output current may be lower than rated value.
The current can not keep stable during operation:
This situation may relate to the following factors:
a)The voltage of electric power network changes;
b)Serious interference from electric power network or other electric facilities.
Gas vent in welds:
c)Examine whether the gas supply circuit has leakage.
d)Examine whether there is sundries such as oil, dirt, rust, paint etc. on the surface.
4 Trouble shooting and error checking
Notes: The following operations must be performed by qualified electricians with valid certifications. Before maintenance, you are suggested to contact
local distributor to verify qualification.
Malfunctions
The meter show nothing;
Fan does not rotate;
No welding output
The meter shows;
Fan works normally;
No welding output
the meter shows;
Fan works normally;
Abnormal indicator lights.
Even the machine comes up with abnormal phenomenon such as welding unable, arc unstable or bad welding effect, it is still early to judge that there is
malfunction on the machine. The above-mentioned abnormal phenomenon may be caused by some reasons. For example: tight parts loosen, forgetting to
switch on, wrong set up, cable broken and gas rubber pipe cracked, etc. Therefore, please test and inspect these factors before deliver it back to the
factory because a large number of troubles may be easily solved probably.
For this reason, an initial diagnosis list for general welding troubles is shown below. A trouble happened may be found in the column of "Abnormal items" on
up-right of the list, please inspect and maintain for the corresponding items which have " 〇 " mark in the column according to the following list respectively.
Confirm the power switch is on.
Power supply available for input cable.
Check if the three phase commute bridge is damaged.
There is malfunction occurs in the supplementary power source on control board (contact dealers).
Check if all the sockets in the machine are connected well.
There is open circuit or badness of connect at the joint of output terminal.
The control cable on the torch is broken off or the switch is damaged.
The control circuit is damaged.(contact to dealers)
It might be over-current protection, please turn off the power switch; restart the machine after the
abnormal indicator light winked.
It might be overheating protection, please wait for about 2-3 minutes until the machine renew without turn
off the power switch.
It might be multifunction of inverter circuit. (contact dealers)
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Solution
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