Fogmaker Universal User Manual page 8

Fogmaker Universal
3.4 Pneumatic Activation - Firetrace
Firetrace is a fully automatic, pneumatic system. The system consists of a detector gas cylinder and a
polymer hose, which is installed in the engine room at ceiling level round the engine. In the event of a
fire the hose is burnt off, the pressure drops and the valve of the Fogmaker cylinder is automatically
opened to discharge the extinguishant into the nozzle system. The detector gas cylinder is equipped with
a connector for a pressure guard. The hose can be punctured by hand using a manual activation device
(not standard equipment). Optional accessories are alarm panels, visual and acoustic alarms, as well as
automatic engine, fuel and electricity shutdown mechanisms.
4. Pipes, Couplings and Nozzles (Fig. 11-11A)
4.1 Pipes
The standard kit includes 6 x 0.8 mm soft, treated copper pipe (1) of the required length in accordance
with your order. As an alternative you can use pipes of steel (stainless or not) or steel-reinforced rubber
hose, as well as combinations of these. Copper pipes are, however, easier to handle if you are doing the
installation yourself. They can be bent into flexible curves, which can be adapted to the layout of the
protected room. The pipes can not, however, be bent too many times, as the material hardens. If the
pipe has to be rebent it must first be annealed.
Pipes of plastic or other materials can not be used, since they may burst because of the high pressure.
According to the motor sport regulations of FIA valid from 1 January 1998, the piping must consist
of a fire resistant material.
4.2 Pressure Drop
The Fogmaker system uses high pressure. Therefore
it is important to use the appropriate dimensions for
the pipes so that unneccessary drops in the pressure
are avoided. If the pressure should drop, the efficiency
of the system is reduced.
The chart displays the pressure drop per metre pipe
when using 6x1 mm copper pipe and 8x1 steel pipe,
respectively. The drop should not exceed 1 bar per
metre. For information on the flows which should be
calculated, see section 12 Technical Data. For long
distances we recommend that you use 8 mm pipes for
the feeder line and 6 mm pipes for the nozzle branches.
When cutting the pipes into suitable lengths a special pipe cutting tool should be used, to avoid leaving
burrs in the cut-off pipe ends.
Fogmaker Universal, User Manual, Page 8 (20)
User Manual
Fig. 6
Pressure drop per metre pipe
Edition 2002
Fogmaker Universal
5. Double-assembled Extinguisher, Cover Boxes
5.1 Double-assembled Extinguisher (Fig. 14)
FOGMAKER Universal is also available in a double-
®
and vehicles. The volume of extinguishant is doubled to 6.6 litres, providing enough capacity for a
sprinkler system with 11 to 15 nozzles. The maximum capacity of a FOGMAKER
litres of extinguishant, is 6 to 8 nozzles.
assembled
The double- extinguisher is fixed to its assembly fittings when delivered, and the cylinders
are connected with a hose (se Fig. 14). When installing the cylinders you must not disconnect them
from the assembly fittings, since this might affect the connector coupling between the hose and the lid
of the cylinder and cause leakage.
5.2. Cover Boxes (Fig. 13)
Fogmaker International AB market a cover box of powder coated sheet-steel for single as well as double-
assembled
cylinders. These boxes are primarily used for outside assembly on vehicles and machines
that are used in difficult conditions.
Cover box
Fig. 13
Fogmaker Universal, User Manual, Page 13 (20)
User Manual
assembled
version suitable for large machines
Universal with 3.3
®
Double-assembled extinguisher 6,6 and 8 litres
Fig.14
Edition 2002