dallara F305 - Extinguisher System; Details; Testing; Cares

31 EXTINGUISHER SYSTEM
LAYOUT
DETAILS
The LIFELINE system is an electrically triggered Halon or foam spray fire extinguisher system. The
system uses an actuator to operate the valve located on the pressurised container, containing the
extinguishing liquid. These are triggered remotely using a battery powered power pack.
In order to guarantee reliable operation the actuator follow military specifications. The system/battery
test electronics are integrated into the remote power pack. The connector on the firing head is also of
military grade.
TESTING
The power pack electronics can test the continuity of the electrical wiring, and provides a high
current pulse test on the battery, to ensure system integrity before use. The battery test electronics
do not excessively drain the battery during this test.
The tests are carried out using a three way switch on the power pack. Since the system is only as
good as the battery that powers it and the integrity of the wiring and its connections, the tests
should be performed before each race.
To check the battery, press and hold up the power pack switch. Every 2 seconds you’ll see a
YELLOW light flash. If the light flashes very dimly the battery should be replaced. If in doubt change
the battery.
To check the wiring continuity, ensure that the power pack switch is on “SYSTEM INACTIVE” to
ensure that the extinguisher is not fired. Press the internal firing button and check that the RED light
comes on. Press the external firing button and check that this also makes the RED light comes on.
CARES
• Ensure that the wiring cables do not run next or in the same loom as the power ones, especially
those for ignition and battery power. Ideally, run all cables next to the chassis (earth);
• ensure that all plugs exposed to water spray are protected with rubber boots;
• do not allow cables to run through sharp edged passages without protection;
• do not fix the cables next to or onto any surface likely to exceed 100 °C;
• do not attempt to turn firing heads as system may be activated.