Regal LS4C Owner's Manual page 113

Portable Fire Extinguishers
Clean agent extinguishers are primarily for Class
B and C fires (gasoline is a flammable liquid under
the Class B group). The extinguisher should be of
the 5 lb. capacity and 2 are recommended based
on the maximum capacity of the fuel tank onboard
and the boat length. These extinguishers may
be available from your dealer, marine speciality
stores, or on the internet. It is recommended to
have extra portable fire extinguishers to backup
the automatic fire extinguisher system since a fire
could take place in an area outside of the sump/
machinery space.
As noted above a clean agent type of liquefied gas
used today is FE- 241. This gas is colorless and
odorless, heavier than air and sinks to the lower
parts of the sump to extinguish fires. Since the year
2000 ingredients have changed to a more environ-
mental friendly formula (Chlorotetrafluoroethane or
FE- 241). FE- 241 is used in portable-hand units.
The canister needs to be weighed once a year.
Also, the canister is engraved with a date which is
part of the canister life cycle. Refer to the informa-
tion regarding fire prevention in this manual and on
the internet.
Normally the clean agent fire extinguishers initally
cost more than powdered or CO2 extinguishers but
they are more effective with fire ports than powder
extinguishers. They work by suffocating the fire via
removing oxygen which is the key ingredient in any
on board marine fire.
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