Westerbeke 7.0KW BCG-60HERTZ Operator's Manual page 25

Fuel System
The generator
l1lU.S1.
have its own fuel supply line; in other words, it
~
have its own fuel tank pickup tube
and primary fiJter/Water separator. Do not tee off another engine's fuel supply. Installations where the fuel
tank(s) are at or above
the
generator, with the fuel supply lines to the engine's carburetor routed below the
level of
the
fuel tank's top,
011J.S1.
have a means of shutting off the fuel to the generator's engine when the
engine is not running. This installation procedure helps guard against the possibility of gasoline Siphoning
through the supply line into the engine through the carburetor, should the carburetor float needle valve stick
in the open position or not seat propeny, or should the fuel line rupture between the engine and fuel tank.
This (anti-siphon) shut-off valve can be e1ectrically-operatecf (with a manual override) to open when the
generator's engine is started, and to close when the generator's engine is shut down. A manually-operated
valve can also be installed and should
be
operational from the generator's start/stop panel or from the vessel's
deck. Installations where the generator is located above the fuel tank(s), whereby the routing
of
the fuel
supply line to the generator's carburetor remains above the top level of the
fuel
tank, do not require this
(anti·siphon) shut-off valve. A manually-operated service shut·off valve should be located between the fuel
pickup at the tank and the service shut-off valve located at the fuel connection to the generator.
The two illustrations that follow were taken from the Coast Guard publication Fuel System Compliance
Guideline. These Hlustrations show basic fuel system layouts that incorporate anti-siphon protection.
All
fuel
lines should
be
routed and supported to prevent leaks from vibration and chafing. The line should
be supported every 12 - 14 inches. Use as few connections as possible in the plumbing of these lines.
The fuel tank's vent should
be
located so that its discharge route cannot allow water to enter through to the
fuel tank(s). Moisture must not be allowed to accumulate in the vent's line.
fUEL LINE ALWAYS ABOYE fUEL TANK TOP LEVEL
TOP
LEVEL
10 ANTI-SIPHON DEVICE OR ELECTRICALLY
OPERATED VALVE NEEDED
NOT ACCEPTABLE
"'-
FUEl
TANI TOP lEYEL _FUEL
~=UEL
TANI
19 Westerbeke Generators