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§5 MAINTENANCE &
TROUBLESHOOTING
§5.1 Maintenance
In order to guarantee that arc welding machine works high-efficiently and in safety, it must be
maintained regularly. Let customers understand the maintenance methods and means of arc
welding machine more , enable customers to carry on simple examination and safeguarding by
oneself, try one's best to reduce the fault rate and repair times of arc welding machine, so as 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 supply power and
wait for 5 minutes, until capacity voltage already drop to safe voltage 36V!
Date
Maintenance item
Daily
examination
Observe that whether panel knob and switch in the front and at the back of arc welding
machine are flexible and put correctly in place. If the knob has not been put correctly in
place, please correct; If you can't correct or fix the knob , please replace immediately;
If the switch is not flexible or it can't be put correctly in place, please replace
immediately; Please get in touch with our company maintenance service department if there
are no accessories.
After turn-on power, watch/listen to that whether the arc welding machine has shaking,
whistle calling or peculiar smell. If there is one of the above problems, find out the reason
to get rid of; if you can't find out the reason, Please contact local this area our company
agent or the branch company.
Observe that whether 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 whether the min/max value on LED accords with the set value. If there is
any difference and it has affected the normal welding craft, please adjust it.
Check up that Whether fan is damaged and is normal to rotate or control. If the fan is
damaged, please change immediately. If the fan does not rotate after the arc welding
machine is overheated , observe that whether there is something blocked in the blade, if it is
blocked, please get rid of ; 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 that whether the fast connector is loose or overheated. if the arc welding
machine has the above problems, it should be fastened or changed.
