Regal 38 EXPRESS Manuel du propriétaire télécharger pdf (Page 55)

Chapter 4

TYPICAL VENTILATION SYSTEM

Engines require a continuous supply of fresh air in order

to generate peak horsepower and rpm. To deliver fresh

air for the engines a dual set of permanently mounted

vents are integrated into the boat’s deck on both port and

starboard sides.

When the engines are started fresh air is drawn through

the vent system. As the demand for air increases in rela-

tionship to the engine revolutions per minute (rpm’s) the

engine induction system supplies the required additional

air supply by inhaling more air through the vents.

Check the vents periodically for any obstructions or for-

eign objects such as nests or spider webs. If the propul-

sion system is running at a lower than normal cruising

rpm or seems to lack power or the vessel is slow to plane

check the fresh air supply to the engines including the

engine air ﬁ lters.

The fresh air system outlined above is called natural ven-

tilation.

DECK

VENT

CHECK FOR

OBSTRUCTIONS

In addition to the natural ventilation system a powered

ventilation system is used on gasoline and select diesel

engine propulsion unis. The powered ventilation uses

an ignition protected blower motor and removes any

dangerous fumes from the engine compartment bilge area

through a set of attached hoses and emits the discharged

air through vents to the atmosphere safely. Blowers need

to run for at least 4 minutes before starting engines or

generator and the blowers need to be activated below

cruising speeds. Note that there is one blower motor per

engine.

TYPICAL DUAL POWERED BLOWER SYSTEM

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Regal 38 EXPRESS Manuel du propriétaire Page 55