SWEISS
WELD.COM
NOTES
30
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.
Observe that Whether the current output cable is damaged. If it is damaged, it should
be wrapped up, insulated or changed.
Monthly
examination
Using the dry compressed air to clear the inside of arc welding machine. Especially for
clearing up the dusts on radiator, main voltage transformer, inductance, IGBT module,
the fast recover diode and PCB, etc.
Check up the bolt in arc welding machine, if it is loose, please screw down it. If it is skid,
please replace. If it is rusty, please erase rust on bolt to ensure it works well.
Quarter-
yearly
examination
Whether the actual current accords with the displaying value. If they does not accord,
they should be regulated. The actual current value can be measured by the adjusted plier-
type ampere meter.
Yearly
examination
Measure the insulating impedance among the main circuit, PCB and case, if it below
1MΩ, insulation is thought to be damaged and need to change , and need to change or
strengthen insulation.
§5.2 Troubleshooting
Before arc welding machines are dispatched from the factory, they have already been debugged
accurately. So forbid anyone who is not authorized by us 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 us could overhaul the machine!
Guarantee to shut off the arc welding machine’s power before turn on the outline of the