19
TROUBLESHOOTING AND FAULT FINDING
Notes: The following operations must be performed by qualified electricians with valid
certifications. Before maintenance,please contact with us for professional suggestion.
Fault symptom and solutions
Faults
Solutions
Meter can not display, fan can
not run.
1.
Make sure air switch is on.
2.
Power source of input cable has electricity.
3.
Make sure power source not lack of phase.
Meter is normal, fan is normal,
cutting gun switch can not work
1.
Check if cable is loosen.
2.
Control wire of gun broken or switch broken.
3.
Control circuit is broken.
（
Contact factory
）
Abnormal indicator is lit, meter
is normal, fan is normal
1.
High-pressure device is broken.
2.
IGBT is broken.
3.
Rectifier broken.
4.
Control board is broken.
5.
Feeding circuit broken (abnormal indicator lit), contact
factory.
Meter is normal, fan is normally
working, electromagnetic valve
is abnormal, no arc output,
abnormal indicator is not lit.
1.
Arcing part has problem.
2.
Electricity-releasing nozzle is too far away.
3.
High-pressure device is broken.
4.
Relay is broken.
5.
Control circuit broken.
Air switch can not close.
1.
Air switch quality is poor.
2.
Three phase rectifying bridge is broken.
3.
Check if any short circuit inside.
