MAINTENANCE AND TROUBLESHOOTING
29
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
equipment!
