Fire Extinguisher System; Fire Extinguisher Activation - Porsche 911 GT3 R Technical Manual

9.4.

Fire extinguisher system

9.4.1. Fire extinguisher activation

The car is equipped with an FIA homologated fire extinguishing system
using AFFF as extinguishing agent. The extinguishant cylinder has two
separate chambers each with a two kilogram capacity. The extinguishing
agent is discharged through three nozzles located in the engine bay and a
further three located within the cockpit.
The system operates between -15° C and +60°C. The extinguisher
cylinder must be protected from frost (remove from vehicle).
The operating pressure of system is 14 bars, and should be checked
regularly using the manometer mounted to the extinguisher bottle.
The extinguishing agent, extinguisher cylinder and flexible pipes
should be replaced after a maximum of 2 years from the date of
manufacture by original spare parts.
The extinguisher system is live when the toggle switch on the trigger box
is set in the "System Active" position. The extinguisher is discharged by
pressing the dash mounted push button and/or the push button in the
windshield apron.
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