Table of Contents
Advertisement
Exhaust System
IIWARNINGI
CARBON MONOXIDE EXHAUST GAS IS DEADLY. Carbon monoxide is a dangerous gas that
can cause unconsciousness and is potentially lethal. Some of the symptoms or signs of carb-
on monoxide inhalation or poisoning are listed below.
o Dizziness
o Vomiting
o Intense Headache
o Muscular Twitching
o Weakness and Sleepiness
o Throbbing in Temples
All exhaust systems should be such that the entry of sea water into the engine's exhaust manifold and
cylinders is prevented while the engine is not running, or while the vessel is under sail or power in which case
the vessel may experience heeling or backing down from following seas or any other conditions. Special
attention must be taken to make certain the exhaust system is secure and tight and free of leaks.
The sea water supply through-hull sea cock fittings
must
be of the flush-hull type. High-speed scoop type
fittings must not be used, as they tend to encourage siphoning.
When a water lift type exhaust system is used, the exhaust muffler should be mounted as close to the en-
gine as practical. The exhaust discharge
should always drop downward into the
exhaust muffler. Loops in the exhaust
hose between the water-injected exhaust
elbow and the water lift muffler should be
avoided, as these will trap and hold water.
For installations where the exhaust
manifold/water-injected exhaust elbow is
at or below the vessel's water line,
provisions must be made to install a
siphon-break or a vent in the sea water
supply hose to the water-injected ex-
haust elbow. This stops the flow of sea
water that runs through the sea water
cooling system from filling the exhaust
and engine cylinders when the engine is
shut down. This sea water supply hose
must be looped above the water line and
the siphon-break or vent installed in the
high point of the loop above the water
line. This siphon-break or vent must al-
ways be above the water line during all
angles of vessel operation to prevent
siphoning. The vent, when used, must
have its vent hose or tube routed so it can
remain above the water line and empty of
water when the engine is shut down. This
allows air to enter through this vent to
prevent siphoning.
"""u"i-
I!~~ ~ ~
21
GEI£RllOR Alan wtm LIU
SIPHOI utAI-----+:':
GEMEUIOR HLOII IInH LIME
HI WATER
STUIHR
PUHP
m
IIAHR
" ' ' - ' . '
PUMP
Westerbeke Generators
Advertisement
Table of Contents
