22
9.2
Repair
Only qualified person can repair the machine
Check the three phase input cable first before open the machine, then check the breaker at back of the machine,
finally check the welding cable connection.
9.3
Discard
The capacitor on the PCB burnt may cause explosion
The rubber cover and pad burnt may cause dangerous gas
Please deal as industrial waste
10
Trouble shooting
No.
Fault
Cause
Troubleshooting
1.
Power indicator
off when
turn on the
machine
1.
Three phase input wrong
Check three phase input
2.
Air breaker damage
Replace breaker or restart machine
3.
Control transformer fuse damage
Replace fuse
4.
Control transformer damage
Replace control transformer
5.
Power supply damage
Repair power supply
6.
Indicator damage
Repair panel
2.
Turn on the
power source, the
cooling fan
doesn`t work
1.
The input wire of three phase
power source is under trouble.
Check three phase input
2.
The fuses on the front panel is
broken
；
Replace fuse
3.
Control circuit damage
Repair or replace PCB
4.
The cooling fan is damaged.
Repair or replace fan
5.
Machine have
abnormal
shake or
power switch
trip
1.
IGBT module damage
Replace IGBT
2.
Main transformer damage
Check transformer
3.
Driving board damage
Replace board
6.
The current out of
control when
welding
1.
Cable connection wrong
Check wire connection
2.
Given abnormal
Check controller
3.
Hall sensor connection loose
Check hall sensor connection
4.
PCB damage
Repair or replace PCB
7.
Machine can't
work when
power on,
1.
Arc voltage inspection wire
damage
Check the wire connection
2.
Welding cable connect unstable
Check the cable connection
