CO² Fire Extinguisher System For EDM Machines
The principle is a simple self-

Firetrace employs a flexible detection and delivery system called Firetrace Tubing. The tubing is manufactured from specially processed polymer materials to achieve the desired heat detection and delivery characteristics.
The Firetrace Tubing, which is pressurized, is placed within the area above potential fire hazard and secured in place with brackets provided. The Indirect Firetrace system discharges the extinguishant into the protected area via plumbed diffusers that are initiated by the Firetrace tube bursting. The machine is also switched off via a pressure switch.