Troubleshooting - Yeswelder CUT-55DS User Manual

The abnormity indicator on the front panel would illuminate in case of any failures inside the
cutting machine.
Malfunction Phenomena
Turn on the machine, the
power indicator illuminates,
the control PCB keys do
not function, and there is
no response when pushing
the torch trigger.
Turn on the machine, the
power indicator illuminates,
the control PCB keys work
normally, but there is no
response when pushing the
torch trigger.
Turn on the machine, the
power indicator illuminates,
and the fan works. When
pushing the torch trigger,
the solenoid valve functions,
but there is no HF discharge
rustling.
Arc can not be ignited.

TROUBLESHOOTING

The cutting machine crashes: Shut down the machine, and
restart it.
1) The LED1 on the main board is on: The control PCB is
damaged.
2) The LED1 on the main board is of f: Check the torch
trigger and torch trigger wire.
The arc ignition part fails:
1) The interelectrode distance of the discharge nozzle is too
long.
2) There is leakage of the HF capacitor 102/10KV.
3) The relay is damaged.
4) The input voltage is too low.
The air pressure is overly high or overly low.
15
Cause and Solution