7
No OCV, there is abnormal noise
from the machine
FRD on the main circuit is damaged
1.
Check and replace the FRD
The OCV is OK, but sometimes the
arc will break
Lack-phase
Check the input power
Suddenly there is no welding
current during the welding process
1.welding cable and work piece with poor
connection
2.Protective fuse break
1.check the weld cable
2.Replace the fuse(1.5A)
Machine not work, but the overload
indicator on
1.
Cooling fan damaged cause overheat
protection
2.
Over-load use cause over heat
protection
1.
Replace cooling fan
2.
Stop welding, let the machine operate
for 10min without load
Machine not work, but the lack
voltage indicator on
The input lack-phase or lack voltage
Check three phase input
Attention: Only qualified technicians should perform troubleshooting work on the machine. If for any reason you do not
understand the test procedures or are unable to perform the tests/repairs safely, please contact us for technical assistance.
10
Packing List
1.ZX7-HD welding machine 1 pcs
2.Electrode holder 1 pcs
3.Fast connector 2 pcs
4.Documents (Guarantee card, operation manual, quality certificate) 1 for each
