Raw Water Discharge; Raw Water Supply Hose - Westerbeke 3.0 BPMG Operator's Manual

INSTALLATION
RAW WATER DISCHARGE
The raw water cooled 3.0KW Generator is cooled
internally by a continuous flow of raw water.
The fresh water cooled model is cooled internally by fresh
water (coolant). This coolant is cooled by a continuous flow
of raw water (via the heat exchanger).
Both model generators use the engine cooling raw water to
cool the exhaust system as it is discharged overboard. A raw
water supply hose delivers the raw water from the engine to
the water injected exhaust elbow.
RAW WATER SUPPLY HOSE
The raw water supply hose from the discharge connection on
the engines cooling system to the inlet connection of the
water injected exhaust elbow must be looped a minimum of
12 inches (30cm) above the vessels loaded water line.
On installations where the water injected exhaust is close to
or below the vessels loaded water line, provisions must be
made to install a syphon break in the raw water supply hose.
The function of the syphon break is to stop the raw water
flow after the engine is shutdown. This flow, if not stopped,
will fill the exhaust system a?d possibly the engine as well.
The raw water supply hose must be looped well above the
loaded water line to allow the syphon break to function
during all attitudes of vessel operation to prevent syphoning
when the generator is not operating.
~<er>~--'RAW
WATER
;DRAIN
HEAT EXCHANGER
When the generators location is above the loaded waterline
of the vessel during all attitudes of vessel operation, it is still
advisable to loop the raw water discharge hose at least 6
inches or more above the generator and then down to the
inlet connection on the water injected exhaust elbow.
NOTE:
Always use quality hose with good wall integrity or
wire reinforced hose so it will maintain its shape when
looped and also provide proper mechanical support for the
hose.
#053499 WHEN A SIPHON BREAK
SIPHON BREAK IS NOT REQUIRED
AVAILABLE FROM RAW WATER ,,,, .. - - '
YOUR WESTERBEKE SUPPLY HOSE
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INJECTED ' :
EXHAUST
1
EXHAUST
OVERBOARD
EXHAUST SYSTEM
OIL DRAIN HOSE
Engines & Generators
7