Any ideas welcome .
The torch is coupled to a Blue Marlin table.
Genuine Hypertherm consumables.
The consumables have to be taken off the torch and reloaded after every job, otherwise the arc will not initiate properly, only a brief white spark.
No fault lights on plasma.
No fault light on pcb inside plasma cutter.
Torch will perform multiple pierces, can cut out nested shapes, but after last shape is cut, by the time a new one is loaded on the pc, less than a minute, back to brief white spark from torch.
Turn off cutter.
Remove and refit consumables
Works again.
Have taken torch apart and nothing obvious.
Torch resistance checks done
Electrode make perfect contact, then pulls away when air flows.
Thanks in advance for any ideas.