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§5 Maintenance & Troubleshooting
§5.1 Maintenance
In order to guarantee safe and proper operation of welding machines, they must be
maintained regularly. Let customers understand the maintenance procedure of welding machines.
Enable customers to carry on simple examination and inspections. Do your best to reduce the fault
rate and repair times of welding machines to lengthen service life of arc welding machine.
Maintenance items in detail are in the following table.
●
Warning: For safety while maintaining the machine, please shut off the main input power
and wait for 5 minutes, until capacitors voltage already drop to safe voltage 36V!
Date
Maintenance items
Daily
examinati
on
Observe that the knobs and switches in the front and at the back of arc
welding machine are flexible and put correctly in place. If any knob has not
been put correctly in place, please correct. If you can't correct or fix the knob,
please replace immediately;
If any switch is not flexible or it can't be put correctly in place, please replace
immediately! Please get in touch with maintenance service department if there
are no accessories.
After turn-on power, watch/listen if the arc-welding machine has shaking,
whistle calling or peculiar smell. If there is one of the above problems, find
out the reason and clear it. If you can't find out the reason, please contact your
local service repair station or distributor/Agent.
Observe that the display value of LED is intact. If the display number is not
intact, please replace the damaged LED. If it still doesn’t work, please
maintain or replace the display PCB.
Observe that the min./max.Values on LED agree with the set value. If there
is any difference and it has affected the normal welding results, please adjust it.
Check whether the fan is damaged and whether it is normal to rotate or
control. If the fan is damaged, please change immediately. If the fan does
not rotate after the machine is overheated, observe if there is something
blocking the blade. If it is blocked, please clear the problem. If the fan does
not rotate after getting rid of the above problems, you can poke the blade by the
rotation direction of fan. If the fan rotates normally, the start capacity should be
replaced. If not, change the fan.
Observe whether the fast connector is loose or overheated. If the arc-welding
machine has the above problems, it should be fastened or changed.
Observe whether the current output cable is damaged. If it is damaged, it
should be insulated or changed.
