Welding Mode
■
Crater Off
Press and hold the torch switch, the machine will open the gas valve to start the flow of the shielding
gas and then the arc is started at welding current. When finish to weld, release the torch switch, then
the arc is off and flow the gas during the gas after-flow time.
Crater On
Press and hold the torch switch, the machine will open the gas valve to start the flow of the shielding
gas and the arc is started at the start current. At this time release the torch switch, the output current
will be increased from the start current to the welding current during the up slope time. When finish to
weld, press and hold the torch switch, the output current will be decreased from the welding current to
the crater current during the down slope time. At this time release the torch switch, the arc is off and
flow the gas during the after-flow time.
TROUBLESHOOTING
■
SYMPTOMS
REASON
RECOMMENDED ACTION
Cooling fan does not work when
the power switch is on.
No input voltage
․
Fuse (3A) is blown
․
Power switch broke down
․
Cooling fan broke down
․
Verify input voltage
․
Replace Fuse (3A)
․
Replace Power switch
․
Replace Cooling fan
․
Gas does not flow from torch
when pressing the torch switch
Torch switch connector fail
․
Torch switch broke down
․
Control PCB broke down
․
Reconnect Torch switch connector
․
Replace Torch
․
Replace Control PCB
․
Gas flows continuously at "Off"
position of torch switch
Torch switch broke down
․
Torch broke down
․
Control PCB broke down
․
Replace Torch switch
․
Replace Torch
․
Replace Control PCB
․
Arc does not started
Torch cable is broke
․
Torch switch connector fail
․
Work cable fail
․
Torch broke down
․
Control PCB broke down
․
Repair Torch cable
․
Reconnect Torch switch connector
․
Reconnect Work cable
․
Replace Torch
․
Replace Control PCB
․
Crater does not work
Crater select switch broke down
․
Control PCB broke down
․
Replace Selector of function
․
Replace Control PCB
․
. If all recommended action have been checked and the problem persists, please contact our
√
service center
