31
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, inductors, IGBT
modules, fast recover diodes, PCB’s, etc.
Check the screws and bolts in the machine. If any is loose, please screw it tight. If it
is shaved, please replace. If it is rusty, please erase rust on all bolts to ensure it
works well.
Quarter-
yearly
examination
Check whether the actual current accords with the displaying value. If they did not
accord, they should be regulated. The actual welding current value can be measured
by and adjusted by 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.
•
4.2. Troubleshooting
Before the welding machines are dispatched from the factory, they have already been
tested and calibrated accurately.
It is forbidden for anyone who is not authorized by our
company 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!