Fuel System: Gas Option; Cooling System: Gas Option; Exhaust System: Gas Option; Fire Suppression System - Marquis 500 Sport Bridge Owner's Manual

FUEL SyStEm - WAtER SUppLy
Open Closed
gEnERAL SEAcOck DEtAiL
FUEL SyStEm - WAtER
DRAin
SEAWAtER StRAinER
FiRE SUppRESSiOn tAnk
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Each propulsion engine has a closed cooling system that removes heat from the engine
and exhaust system . Closed systems use a freshwater/antifreeze mixture to cool the en-
gine . The coolant mixture runs through a heat exchanger that transfers heat to seawater
taken in through a seacock for each engine .
Make sure that a sufficient level of coolant mixture is kept in each system . Open the
cooling system seacocks before starting the engines. The inlet seacocks for each
engine are located on the IPS drives .
Clean the seawater strainer (located on the AFT PORT of the engine) every 14 days or
sooner as necessary . Running an engine with an inadequate supply of antifreeze, or with
obstructed or restricted seawater pickups or strainers can cause serious damage to the
engine and related systems .
The cooling system may need to be repaired if an above normal temperature registers on
the engine temperature gauge . IMMEDIATELY shut off the affected engine if the engine
temperature quickly rises, and have the cooling system inspected and repaired .
CauTiON
SERiOUS DAmAgE tO thE EnginE AnD RELAtED SyStEmS cAn incUR by
RUnning An EnginE With An inADEqUAtE SUppLy OF AntiFREEzE, OR
ObStRUctED SEAWAtER pickUpS OR StRAinERS
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Check the exhaust system regularly for proper operation . Change in engine noise could
indicate an exhaust system problem, and should immediately be investigated .
The exhaust system for each engine consists of an exhaust manifold, exhaust piping,
and the exhaust hoses used to vent the exhaust to the atmosphere . Carbon monoxide
may escape and endanger the passengers if the exhaust system contains leaks or
obstructions, or has any other problem that prevents it from venting exhaust properly .
f s
ire Uppression
An automatic fire suppression system is installed in the engine room . The suppression
system is located forward of the port engine between fuel tank and waste tank . The
system provides extra security in the event of an engine room fire . Refer to the OEM
information for details on operating the fire suppression system . The system can also be
activated manually by a handle mounted at the Aft PORT Locker .
WarNiNg
immEDiAtELy EvAcUAtE thE EnginE ROOm AnD thE AFt biLgE AREA iF thE
FiRE SUppRESSiOn SyStEm iS ActivAtED. ASphyXiAtiOn cAn RESULt iF
thE FiRE SUppRESSiOn SyStEm chEmicALS ARE inhALED.
immEDiAtELy vEntiLAtE thE EnginE ROOm With FRESh AiR OncE thE FiRE
iS EXtingUiShED AnD thE SyStEm iS DEActivAtED.
P P
roPulsion roPulsion
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as ption
: g o
as ption
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5027 • E5 09/2011